# Surface Mount Capacitors and their Markings **URL:** \ **Category:** Capacitors\ **Tags:** part-marking, part-identification\ **Created:** [April 12, 2023, 9:00pm UTC](https://forum.digikey.com/t/surface-mount-capacitors-and-their-markings/30122 "2023-04-12T21:00:01Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![AaronRollens](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/aaronrollens/32/8752_2.png) [@AaronRollens](https://forum.digikey.com/u/AaronRollens)\ **Post date:** [April 12, 2023, 9:00pm UTC](https://forum.digikey.com/t/surface-mount-capacitors-and-their-markings/30122/1 "2023-04-12T21:00:01Z")
# Decoding Capacitor Part Markings This guide is intended to take the mystery out of identifying part markings on the various styles of capacitors. ![image](https://global.discourse-cdn.com/digikey/original/3X/9/0/9039141c44a99dd7ba2c069c8c26fff6ae3def18.jpeg) All capacitors are measured in Farads. The scale of which they are measured can sometimes be different. If they are measured in Farads, Microfarads, Nanofarads, or Picofarads can be determined by the physical size and type of the capacitor. [Click here for a refresher on the Metric System and how to convert between the metric scales.](https://forum.digikey.com/t/the-metric-system/30257) Larger parts might spell this outright as the product has the space to do it. When they do there are a couple of things to be careful of. - You may see the units of _ **millifarad** _ referenced as _ **MF** _ instead of _ **mF** _ like the convention tells us it should be. with that said, millifarad is rarely used. - Even though the proper way to call out _ **microfarads** _ would be _ **µF** _, there will be times that is specified using an “MFD” As the parts get smaller, the specifications tend to be conveyed by a code. The type of capacitor and the convention of the code used on it will play a part in decoding what it actually means. * * * ![image](https://global.discourse-cdn.com/digikey/original/3X/b/4/b4cc9ae1bd4c8d8d5ecded821fa9eed6be628dd5.png) ## Aluminum Electolytic Capacitors These are usually large enough that their specifications will be printed on them but there are expections to this. The most notable example would be the surface mount version. ![image](https://global.discourse-cdn.com/digikey/original/3X/d/a/da558377676b7f5b80768bea55a1936e78b76353.png) ![image](https://global.discourse-cdn.com/digikey/original/3X/5/5/55a7da60596a90cc85819565a7a85931749041be.png) ![image](https://global.discourse-cdn.com/digikey/original/3X/d/6/d696de604f36957ef9374227f5787c4f1407c205.png) To learn more about the voltage > [@SMT Electrolytic Capacitor with no Voltage Rating](https://forum.digikey.com/t/smt-electrolytic-capacitor-with-no-voltage-rating/974): > > One questions that comes through our department is from customers who are trying to identify a surface mount Aluminum Electrolytic Cap and there is no Voltage listed. Once we start looking at the cap we often find that the voltage is listed, however as a letter and not the actual voltage value. Here is a marking chart from [Rubycon](https://www.digikey.com/en/supplier-centers/r/rubycon)’s TZV series of Capacitors. [Cornell Dubilier](https://www.digikey.com/en/supplier-centers/c/cornell-dubilier-electronics) has a similar chart with their AFK Series This however is not standard as some of the capaci… will have markings two to four characters in length. ![image](https://global.discourse-cdn.com/digikey/original/3X/8/c/8c194eec0e705acded849c85188f13e23f3c47a0.jpeg) ![image](https://global.discourse-cdn.com/digikey/original/3X/f/4/f4496e9aa69b034d7ad873fab615ece721a7d342.jpeg) * * * ## Three-Digit EIA Standard-tolerance SMD capacitors use a 3-digit code to mark the capacitance value on the part. The first two numbers will indicate the significant digits, and the third will be the multiplier. ‘R’ is used to indicate the position of a decimal point. ![image](https://global.discourse-cdn.com/digikey/original/3X/5/5/5523770a5833c09995e4ca950936e2ca90dbc353.png) | | | | --- | --- | | 10 | Significant Digits | | 7 | Multiplier | To get our value we multiply our significant digits against our multiplier. We simply add that number of zeros on to the end. This value is in picofarads. To change to to microfarads, simply move the decimal point to the left six spaces. > 10 + 0,000,000 = 100,000,000pf > 100,000,000 pf = **100µF** * * * ## Four-Digit EIA Similar to the three digit EIA, the four digit format uses the beginning values to indicate the significant digits, the last digit as the multiplier and a letter designating a tolerance. ‘R’ is used to indicate the position of a decimal point. The four digit format allows for higher precision. ![image](https://global.discourse-cdn.com/digikey/original/3X/1/b/1bbed1378bb9f92fa02942dfc5408f810211966e.png) ### Tolerance code | Code | Tolerance Value in % | | --- | --- | | B | 0.1 | | C | 0.25 | | **D** | **0.5** | | F | 1 | | G | 2 | | J | 5 | | K | 10 | | M | 20 | | Z | +80/-20 | **The Tolerance code D = 0.5%** * * * ## Two-Digit EIA ( EIA-198) ![image](https://global.discourse-cdn.com/digikey/original/3X/4/d/4df26ce03dfe3d480034d1d84c696ee045415a06.png) Sometimes there is so little room on the part that even the standards are not practical. The EIA-198 system of part marking uses two characters (one number and one letter) in which the letter represents the value and number represents the multiplier. There are a couple of things to know. - \ ***This system is case sensitive.** You will notice that by using some of the lower-case versions of letters they could eliminate many of the troublesome numbers such as I and O. They too easily get confused for 1 and 0. - _ **The capacitance codes are not based upon the capacitance value like the others** _ The first digit is used for capacitance and correlate to the following tables. - _ **Please be aware** _, While this system is still measured in picofarads, The multiplier code is one more than what we are used to in the other two methods. | Code | pF | | --- | --- | | **A** | 1 | | B | 1.1 | | C | 1.2 | | D | 1.3 | | E | 1.5 | | F | 1.6 | | G | 1.8 | | H | 2 | | J | 2.2 | | K | 2.4 | | a | 2.6 | | Code | pF | | --- | --- | | L | 2.7 | | M | 3 | | N | 3.3 | | b | 3.5 | | P | 3.6 | | Q | 3.9 | | d | 4 | | R | 4.3 | | e | 4.5 | | S | 4.7 | | f | 5 | | Code | pF | | --- | --- | | T | 5.1 | | U | 5.6 | | m | 6 | | V | 6.2 | | W | 6.8 | | n | 7 | | X | 7.5 | | t | 8 | | Y | 8.2 | | y | 9 | | Z | 9.1 | | Multiplier Code | Value | | --- | --- | | 0 | 1 | | 1 | 10 | | 2 | 100 | | 3 | 1,000 | | 4 | 10,000 | | 5 | 100,000 | | 6 | 1,000,000 | | 7 | 10,000,000 | | **8** | **100,000,000** | | 9 | 0.1 | * * * ### Comparison | Three-Digit EIA | Four-Digit EIA | Two-Digit EIA ( EIA-198) | | --- | --- | --- | | ![image](https://global.discourse-cdn.com/digikey/original/3X/1/d/1d5de1265623892d280bf4264ab3d3d25e9d0fa4.png) | ![image](https://global.discourse-cdn.com/digikey/original/3X/b/b/bb3474240b8cce7a019afc68abb93fc4db0758c3.png) | ![image](https://global.discourse-cdn.com/digikey/original/3X/f/5/f5b24e5843975d9d341acf8686197a420a9ef126.png) | | 107 | 107D | A8 | | 100µF | 100µF | 100µF | | - | 0.5% | - | * * * ### Voltage Ratings Some capacitors also have a voltage rating that is indicated by a two character code begining with a number and ending with a letter. | Code | Voltage | | Code | Voltage | | Code | Voltage | | --- | --- | --- | --- | --- | --- | --- | --- | | 0E | 2.5VDC | | 2A | 100VDC | | 3L | 1.2KVDC | | | | | | | | | | | 0G | 4.0VDC | | 2Q | 110VDC | | 3B | 1.25KVDC | | | | | | | | | | | 0L | 5.5VDC | | 2B | 125VDC | | 3N | 1.5KVDC | | | | | | | | | | | 0J | 6.3VDC | | 2C | 160VDC | | 3C | 1.6KVDC | | | | | | | | | | | 1A | 10VDC | | 2Z | 180VDC | | 3D | 2KVDC | | | | | | | | | | | 1C | 16VDC | | 2D | 200VDC | | 3E | 2.5KVDC | | | | | | | | | | | 1D | 20VDC | | 2P | 220VDC | | 3F | 3KVDC | | | | | | | | | | | 1E | 25VDC | | 2E | 250VDC | | 3G | 4KVDC | | | | | | | | | | | 1V | 35VDC | | 2F | 315VDC | | 3H | 5KVDC | | | | | | | | | | | 1G | 40VDC | | 2V | 350VDC | | 3I | 6KVDC | | | | | | | | | | | 1H | 50VDC | | 2G | 400VDC | | 3J | 6.3KVDC | | | | | | | | | | | 1J | 63VDC | | 2W | 450VDC | | 3U | 7.5KVDC | | | | | | | | | | | 1M | 70VDC | | 2J | 630VDC | | 3K | 8KVDC | | | | | | | | | | | 1U | 75VDC | | 2K | 800VDC | | 4A | 10KVDC | | | | | | | | | | | 0K | 80VDC | | | | | | | ## Resources If you would rather do some pointing and clicking to find your value I recommend you check out our SMD Capacitor Code Calculator. [![image](https://global.discourse-cdn.com/digikey/original/3X/e/0/e038cf00e36b88b733f3c4f7201b91ac4d6cfcfe.png)](https://www.digikey.com/en/resources/conversion-calculators/conversion-calculator-smd-capacitor-code) ## Quick links to other capacitor related topics you may find helpful. ### Part Selection and Part Markings > [@SMT Electrolytic Capacitor with no Voltage Rating](https://forum.digikey.com/t/smt-electrolytic-capacitor-with-no-voltage-rating/974): > > One questions that comes through our department is from customers who are trying to identify a surface mount Aluminum Electrolytic Cap and there is no Voltage listed. Once we start looking at the cap we often find that the voltage is listed, however as a letter and not the actual voltage value. Here is a marking chart from [Rubycon](https://www.digikey.com/en/supplier-centers/r/rubycon)’s TZV series of Capacitors. [Cornell Dubilier](https://www.digikey.com/en/supplier-centers/c/cornell-dubilier-electronics) has a similar chart with their AFK Series This however is not standard as some of the capaci… > [@Capacitor Quick Reference Guide](https://forum.digikey.com/t/capacitor-quick-reference-guide/12843): > > The table below provides a brief summary of different capacitor types and their relative merits, arranged approximately in terms of decreasing quantity (or increasing quality) of capacitance offered by each type. Capacitor type Sub-type/variant Approx. value range C\*V product range Advantages Disadvantages/things to beware of Good for Lousy for C V Electric double layer, Supercaps 6.8mF to 4000F 2.1 to 75v .03 to 10,000 Exceptionally high C/V ratio. Possible alternative to… > [@Best Capacitors For Audio Purposes](https://forum.digikey.com/t/best-capacitors-for-audio-purposes/13799/2): > > Greetings, Choosing devices that are appropriate for the specific task at hand is the primary concern. “Capacitor” is only a slightly less specific term than “food.” If one wants to make cookies, it’s important to use flour when flour is called for; substituting onions will not produce the desired result. Both flour and onions are food, but they are best used for different purposes within that context. The audio field is one in which a great deal of marketing and snake oil salesmanship preva… > [@Are Capacitors marked mFd or MFD different than µF caps?](https://forum.digikey.com/t/are-capacitors-marked-mfd-or-mfd-different-than-f-caps/755): > > There are a lot of capacitors that use the marking MFD or mFd after the capacitance value. This marking most often on capacitors is actually the same as µF. The µF stands for microFarad. It was common practice on older capacitors to be marked as MFD or mFd either for machinery difficulty to produce the µ symbol print on the casing or for other manufacturer specific reasons. Here is an example of a capacitor that is still active - The product is listed as 330 uF per our [product page](https://www.digikey.com/en/products/detail/cornell-dubilier-electronics-cde/PSU30015/1551671) and als… > [@Why does my capacitor list two values?](https://forum.digikey.com/t/why-does-my-capacitor-list-two-values/10196): > > When replacing an capacitor, typically a [motor start or motor run capacitor](https://www.digikey.com/en/products/filter/motor-start-run-capacitors/2112), an oddity may appear. A capacitor that lists two different values on the case. Such as the example below: The immediate thought that this capacitor is both 540uf and 648uf is reasonably confusing. However, there is a value from this capacitor that is missing, the tolerance. What this capacitor is stating is a capacitance rating of 540uf, with a tolerance of -0%/+20%. If the higher value is not 120% the low… ### Learn more about capacitors > [@Capacitors](https://forum.digikey.com/t/capacitors/12822): > > Introduction At the time of writing, a conservative estimate showed upwards of 37,000 unique manufacturer part numbers for [capacitors](http://www.digikey.com/product-search/en/capacitors?k=capacitor&stock=1)in stock at [DigiKey](http://digikey.com/) (114k including all packaging options). Simply maintaining that kind of SKU count involves an awful lot of paperwork, a lot of forklift mileage, and a lot of cash tied up in physical inventory. Being able to re-package those products to order and have orders on the loading dock ready for shipment in as little as 15 minutes after receiving an or… > [@Capacitor Basics](https://forum.digikey.com/t/capacitor-basics/12823): > > Capacitors are devices which store electrical energy in the form of an electric field. The process is quite similar to the way mechanical springs store energy in the form of elastic material deformation, to the extent that the math describing both is quite similar, save for the variables used. The similarity may in fact be part the reason that students of electrical or mechanical engineering often find the others’ studies arcane and inscrutable; “v” means “voltage” to an EE, but “velocity” to an… > [@General Capacitor Specification](https://forum.digikey.com/t/general-capacitor-specification/12826): > > Voltage Ratings A capacitor’s voltage rating is an indication of the maximum voltage that should be applied to the device. The context of the rating is significant; in some instances it may indicate a maximum safe working voltage, in others it may be more akin to a semiconductor’s “absolute maximum” rating, to which an appropriate de-rating factor should be applied. Tolerance A capacitor’s tolerance describes the limits of deviation from nominal capacitance value that a device should be expecte… > [@Non-Ideal Properties of Capacitors](https://forum.digikey.com/t/non-ideal-properties-of-capacitors/12824): > > For many purposes, real capacitors can be represented using a relatively simple lumped element model, consisting of an ideal capacitor with several additional components. ESR Equivalent series resistance (represented by Resr­ in the model) describes losses associated with moving charge through a capacitor. The resistance of the electrode and lead materials is a contributing factor, and losses occurring within the dielectric material itself also occur and are often dominant. Th… > [@Calculating capacitor ESR from Tan(δ)](https://forum.digikey.com/t/calculating-capacitor-esr-from-tan/2633): > > Capacitor equivalent series resistance (ESR) is often a characteristic of interest, that is not directly specified in parametric data or a device datasheet. Information about a device’s loss angle (δ) is usually available in these cases, which allows calculating an ESR value. A capacitor’s total complex impedance is represented on a real-complex plane as the vector sum of a real component, (the ESR) and a complex (reactive) component representing the ‘ideal’ capacitor that things like ESR mess… > [@Capacitor Selection for high frequency resonant circuits](https://forum.digikey.com/t/capacitor-selection-for-high-frequency-resonant-circuits/27412/2): > > Greetings, [This document](https://www.digikey.com/en/pdf/d/digikey/acrg/capacitors) may prove a useful guide to the various capacitor types available. The polar/nonpolar question is one to start with; like microwave cheeseburgers, nonpolar 'lytics do exist but have many less than appealing qualities… After that constraints on acceptable C, V, and $ values narrow the options quickly. 5kHz is no longer fast for many 'lytics (polymer types particularly), films rated for 600V won’t protest if operated at 6V, and increasing frequency by a decimal place o… ### Capacitor topics by Type > [@Aluminum Capacitors](https://forum.digikey.com/t/aluminum-capacitors/12827): > > Aluminum Capacitors Aluminum capacitors are a family of devices that fall under the umbrella of “electrolytic” capacitors. As such, they offer high capacitance values in small packages at relatively low cost. In trade for these desirable qualities, their electrical properties and service lives tend to be relatively dismal. Though ill-suited for all but the most barbaric of signal-related applications, aluminum capacitors are a staple for DC power-related functions. Three distinct types are avail… > [@Ceramic Capacitors](https://forum.digikey.com/t/ceramic-capacitors/12828): > > Ceramic Capacitors [Ceramic capacitors](https://www.digikey.com/en/products/filter/ceramic-capacitors/60) are electrostatic devices characterized by their use of various ceramic dielectric materials, which are commonly based on barium titanate (BaTiO­3). They are non-polarized with characteristics covering much of the quantity-quality spectrum, with perhaps a slight bias toward quality. Many variations in construction and dielectric properties are available to address diverse application needs, and this broad applicability together with relatively low cost struc… > [@Electric double layer capacitors](https://forum.digikey.com/t/electric-double-layer-capacitors/12831): > > Electric double layer, Supercaps: Device Construction & Distinguishing Traits: [Electric double layer capacitors (EDLCs) and supercapacitors](https://www.digikey.com/en/products/filter/electric-double-layer-capacitors-edlc-supercapacitors/61) are a group of electrolytic-like devices characterized by extremely high capacitance per volume and low voltage ratings, typically no more than a few volts. Construction types and operating principles among these devices differ and are topics of ongoing R&D efforts, but common themes found among them are the use of electrode materials that offer extremely h… > [@Film Capacitors](https://forum.digikey.com/t/film-capacitors/12832): > > Device construction Devices in the [Film Capacitors](https://www.digikey.com/en/products/filter/film-capacitors/62) category are electrostatic in nature, and made using dielectric materials such as paper or various polymers that are formed into thin sheets or “films” and interleaved with electrode materials to form a capacitor. The term “film capacitor” generically refers to any device made using this sort of process, and the term “film” is in reference to the nature of the dielectric material used. When the term “metal” is used as a qualifier for “film” as i… > [@Mica/PTFE Capacitors](https://forum.digikey.com/t/mica-ptfe-capacitors/12833): > > [Mica and PTFE Capacitors | Electronic Components Distributor DigiKey](https://www.digikey.com/en/products/filter/mica-and-ptfe-capacitors/64)Device construction Mica is a naturally occurring group of minerals characterized by an ability to split readily into flat, thin films, with the specific type known as “muscovite” mica being preferred for capacitor applications. As a dielectric, mica offers excellent stability over time and applied voltage, a low temperature coefficient, high temperature tolerance, very good dielectric strength, and low loss characteristics ov… > [@Niobium Oxide Capacitors](https://forum.digikey.com/t/niobium-oxide-capacitors/12835): > > Device construction & distinguishing traits [Niobium oxide capacitors](https://www.digikey.com/en/products/filter/niobium-oxide-capacitors/67) are similar in construction to tantalum and manganese dioxide (Ta/MnO2) devices, using sintered niobium oxide (NbO) in lieu of tantalum metal as the anode material. Produced chiefly by AVX as an alternative to Ta/MnO2 capacitors that doesn’t have the nasty inclination to deflagrate upon failure and also having the potential for improved raw material supply logistics, niobium oxide capacitors are in competition with tantalum pol… > [@Tantalum Capacitors](https://forum.digikey.com/t/tantalum-capacitors/12834): > > Device construction & distinguishing traits [Tantalum capacitors](https://www.digikey.com/en/products/filter/tantalum-capacitors/59) are electrolytic devices primarily used where a compact, durable device with relatively stable parameters is needed, and modest capacitance and voltage ratings are sufficient. Traditionally, tantalums’ advantages over aluminum electrolytics have been found in terms of capacitance per volume, parameter stability over temperature, and longevity; tantalums in general do not suffer from dry-out problems or issues of dielectric degradati… > [@Silicon & Thin Film Capacitors](https://forum.digikey.com/t/silicon-thin-film-capacitors/12836): > > Device construction & distinguishing traits [Silicon](https://www.digikey.com/en/products/filter/silicon-capacitors/68) and [thin film](https://www.digikey.com/en/products/filter/thin-film-capacitors/66) capacitors are a relatively new crop of devices produced using tools, methods, and materials borrowed from the semiconductor industry. The precise control over structure and materials that these techniques provide allows production of near-ideal capacitors with excellent parameter stability, minimal ESR & ESL, wide service temperature capabilities, and comparable to better capacitance per volume compared to the Class 1 ceramic t… > [@Trimmer & Variable Capacitors](https://forum.digikey.com/t/trimmer-variable-capacitors/12837): > > Device construction & Distinguishing traits [Trimmer and variable capacitors](https://www.digikey.com/en/products/filter/trimmers-variable-capacitors/65) are devices that provide a capacitance which is variable within some range, the difference between the two terms being mostly one of design intent; a “trimmer” capacitor is usually intended to be adjusted only a handful of times over its service life, while a “variable” capacitor anticipates routine adjustment. Numerous different construction types are used, but with few to zero exceptions, they are of the electrostati… ---
**Author:** ![reallybadguy](https://avatars.discourse-cdn.com/v4/letter/r/ac8455/32.png) [@reallybadguy](https://forum.digikey.com/u/reallybadguy)\ **Post date:** [April 2, 2024, 3:49pm UTC](https://forum.digikey.com/t/surface-mount-capacitors-and-their-markings/30122/2 "2024-04-02T15:49:12Z")
I haven’t been able to find an answer to this question, so maybe you’ve got it. I’m trying to identify SMD caps on an existing assembly, and they’re marked with what appears to be the two-character EIA-198 code, but followed by a caret (^), e.g. A5^ . Any idea what that might indicate? Voltage, manufacturer, tolerance, etc.? ---
**Author:** ![Verna\_1353](https://avatars.discourse-cdn.com/v4/letter/v/fbc32d/32.png) [@Verna\_1353](https://forum.digikey.com/u/Verna_1353)\ **Post date:** [April 2, 2024, 4:06pm UTC](https://forum.digikey.com/t/surface-mount-capacitors-and-their-markings/30122/3 "2024-04-02T16:06:12Z")
Welcome to the Technical Forum. Can you post pictures with the part markings clearly shown? We can then try to see if we can identify them with the pictures. If you can give dimensions that would be useful also. ---
**Author:** ![reallybadguy](https://avatars.discourse-cdn.com/v4/letter/r/ac8455/32.png) [@reallybadguy](https://forum.digikey.com/u/reallybadguy)\ **Post date:** [April 2, 2024, 4:14pm UTC](https://forum.digikey.com/t/surface-mount-capacitors-and-their-markings/30122/4 "2024-04-02T16:14:42Z")
No pictures available. It’s just as I described, three characters, that’s all. The one marked A5^ (previously mentioned, and presumably a .1uF) is a 1210. This board is from the late 1980s. ---
**Author:** ![Verna\_1353](https://avatars.discourse-cdn.com/v4/letter/v/fbc32d/32.png) [@Verna\_1353](https://forum.digikey.com/u/Verna_1353)\ **Post date:** [April 2, 2024, 4:26pm UTC](https://forum.digikey.com/t/surface-mount-capacitors-and-their-markings/30122/5 "2024-04-02T16:26:33Z")
I am not sure what the A5 is. You can look through the .1uf 1210 options we have on the website: > **[Capacitors | Ceramic Capacitors | Digi-Key Electronics](https://www.digikey.com/en/products/filter/ceramic-capacitors/60?s=N4IgjCBcpgbFoDGUBmBDANgZwKYBoQB7KAbRAA4AWS2ABhAF0CAHAFyhAGVWAnASwB2AcxABfApVoBWBCGSR02fEVIgAzFNqVyaxi3aQuvQSPEgATFoCcs%2BYtwFikMrQB0YAAQBWgGJ6QbBwAqgJ8rADyKACyOGhYAK48OGIEALTmtlC88cpOZDIMZqk20HJZPDmOqhCFZhnOIB6IaMwe7vEoHmDmYLQejKJAA)** > > Ceramic Capacitors are in stock at DigiKey. Order Now! Capacitors ship same day I would try to figure out with the circuit how much voltage this needs to handle. You can narrow the search by the voltage to get less options. If you are unsure you can just choose the highest voltage. Though doing this could make the tolerance worse. I am not sure with the information provided what the voltage would be. ---
**Author:** ![reallybadguy](https://avatars.discourse-cdn.com/v4/letter/r/ac8455/32.png) [@reallybadguy](https://forum.digikey.com/u/reallybadguy)\ **Post date:** [April 2, 2024, 4:28pm UTC](https://forum.digikey.com/t/surface-mount-capacitors-and-their-markings/30122/6 "2024-04-02T16:28:20Z")
> [@Verna\_1353](#): > > I am not sure what the A5 is. Then why are you replying to a question about “Surface Mount Capacitors and their Markings”? Please have someone reply who understands the subject. ---
**Author:** ![Ryan\_2724](https://sea2.discourse-cdn.com/digikey/user_avatar/forum.digikey.com/ryan_2724/32/1716_2.png) [@Ryan\_2724](https://forum.digikey.com/u/Ryan_2724)\ **Post date:** [April 2, 2024, 7:35pm UTC](https://forum.digikey.com/t/surface-mount-capacitors-and-their-markings/30122/7 "2024-04-02T19:35:41Z")
Hi reallybadguy , I notified all our technical staff, to see if anyone can identify what this vintage caret symbol ^ would be. Hopefully someone will have knowledge on the importance of what this vintage symbol means. I am hoping we get a response today, but possibly this week sometime as we may have some currently out of office. Thanks for your patience and look forward to one of our employees to hopefully have more knowledge on this. [@DigiKey\_Internal](https://forum.digikey.com/groups/digikey_internal) ---
**Author:** ![Brian\_2933](https://avatars.discourse-cdn.com/v4/letter/b/71c47a/32.png) [@Brian\_2933](https://forum.digikey.com/u/Brian_2933)\ **Post date:** [April 2, 2024, 11:16pm UTC](https://forum.digikey.com/t/surface-mount-capacitors-and-their-markings/30122/8 "2024-04-02T23:16:01Z")
I searched alot and will look some more but did notice that AVX uses ^ as a logo sometimes it is filled in like an arrow head and sometimes it is a sharp ^ however it always is on the left of the part but I do not know how they did it in the 80’s … I will keep looking and update If I find more.