# Semiconductor **URL:** https://forum.digikey.com/c/semiconductor/98.md?page=9 [Latest](https://forum.digikey.com/latest.md) · [Categories](https://forum.digikey.com/categories.md) · [Tags](https://forum.digikey.com/tags.md) **Page:** 10 --- ## [Hot-Swap Controllers - How to Suppress Large Transient Currents?](https://forum.digikey.com/t/hot-swap-controllers-how-to-suppress-large-transient-currents/67037)
**Author:** [@Alan\_Yang](https://forum.digikey.com/u/Alan_Yang)\ **Replies:** 0\ **Last updated:** [March 25, 2026, 2:44am UTC](https://forum.digikey.com/t/hot-swap-controllers-how-to-suppress-large-transient-currents/67037 "2026-03-25T02:44:33Z")
Core Function of a Hot-Swap Controller： The core role is to enable the safe hot-plugging of circuit boards on live backplanes. The Problem When a PCB is inserted into a live backplane, the charging of load capacitance … --- ## [Help Identify Burnt Out Component](https://forum.digikey.com/t/help-identify-burnt-out-component/64857)
**Author:** [@a1properties69](https://forum.digikey.com/u/a1properties69)\ **Replies:** 6\ **Last updated:** [March 23, 2026, 7:13pm UTC](https://forum.digikey.com/t/help-identify-burnt-out-component/64857 "2026-03-23T19:13:12Z")
Looking to replace this part to fix multiple 12V ratchet battery packs with the same burnt out area on this component mosts likely a transistor for a voltage regulator charging circuit. Best effort possible part numbers… --- ## [Help identifying](https://forum.digikey.com/t/help-identifying/66882)
**Author:** [@jose\_sanchez29](https://forum.digikey.com/u/jose_sanchez29)\ **Replies:** 1\ **Last updated:** [March 20, 2026, 4:23pm UTC](https://forum.digikey.com/t/help-identifying/66882 "2026-03-20T16:23:40Z")
I need help identifying this component It’s for a motor controller And if part number to get replacement Picture of the board Thank you --- ## [What Are the Advantages of the Single-Board Power Bank Implementation?](https://forum.digikey.com/t/what-are-the-advantages-of-the-single-board-power-bank-implementation/66854)
**Author:** [@aayushi.nainwal](https://forum.digikey.com/u/aayushi.nainwal)\ **Replies:** 0\ **Last updated:** [March 20, 2026, 5:05am UTC](https://forum.digikey.com/t/what-are-the-advantages-of-the-single-board-power-bank-implementation/66854 "2026-03-20T05:05:46Z")
The single-board solution consolidates multiple functional blocks into a single design, streamlines the overall system design by reducing the bill of materials and minimizing interconnection losses. This results in impr… --- ## [What protection and performance features are built into the Single board Smart Power Bank?](https://forum.digikey.com/t/what-protection-and-performance-features-are-built-into-the-single-board-smart-power-bank/66813)
**Author:** [@aayushi.nainwal](https://forum.digikey.com/u/aayushi.nainwal)\ **Replies:** 0\ **Last updated:** [March 19, 2026, 12:26pm UTC](https://forum.digikey.com/t/what-protection-and-performance-features-are-built-into-the-single-board-smart-power-bank/66813 "2026-03-19T12:26:00Z")
The board shown in Figure 3 is designed with a 4-layer PCB (Signal/Power – GND – GND – Signal/Power) to ensure stable, low-noise performance. Figure 3. Working and tested single board solution. It includes undervo… --- ## [There is o thermal characteristic data to calculate Tj, Tc](https://forum.digikey.com/t/there-is-o-thermal-characteristic-data-to-calculate-tj-tc/66809)
**Author:** [@anil.tewari](https://forum.digikey.com/u/anil.tewari)\ **Replies:** 0\ **Last updated:** [March 19, 2026, 9:05am UTC](https://forum.digikey.com/t/there-is-o-thermal-characteristic-data-to-calculate-tj-tc/66809 "2026-03-19T09:05:51Z")
Thermal characteristics of MT53E512M32D2FW-046 AAT --- ## [What is function difference between LM13600 and LM13700](https://forum.digikey.com/t/what-is-function-difference-between-lm13600-and-lm13700/66763)
**Author:** [@johnleduc](https://forum.digikey.com/u/johnleduc)\ **Replies:** 0\ **Last updated:** [March 18, 2026, 4:45pm UTC](https://forum.digikey.com/t/what-is-function-difference-between-lm13600-and-lm13700/66763 "2026-03-18T16:45:25Z")
Customers is looking for TI device LM13600 And what function difference between LM13600 and LM13700 because the competitor device will be EOL soon. TI has LM13700 only now because LM13600 was obsoleted. Can LM13700 be … --- ## [VOL (Low-Level Output Voltage) Spec for TLV1822Q1](https://forum.digikey.com/t/vol-low-level-output-voltage-spec-for-tlv1822q1/66752)
**Author:** [@johnleduc](https://forum.digikey.com/u/johnleduc)\ **Replies:** 0\ **Last updated:** [March 18, 2026, 2:32pm UTC](https://forum.digikey.com/t/vol-low-level-output-voltage-spec-for-tlv1822q1/66752 "2026-03-18T14:32:20Z")
Q- T1 he max Vol of LM2903B is 400/550mV. do we have the lower Vol device? and other spec is similar with LM2903B, trying to find TLV1822 Vol in datasheet (but can find Vol in LM2903B)? TI Answer, Looks like the rows ar… --- ## [LMP2012QML-SP max. supply voltage](https://forum.digikey.com/t/lmp2012qml-sp-max-supply-voltage/66750)
**Author:** [@johnleduc](https://forum.digikey.com/u/johnleduc)\ **Replies:** 0\ **Last updated:** [March 18, 2026, 2:14pm UTC](https://forum.digikey.com/t/lmp2012qml-sp-max-supply-voltage/66750 "2026-03-18T14:14:29Z")
Q1 - The datasheet of the LMP2012QML-SP OPAMP specifies the absloute maximum limit of the supply voltage to be 5.8V. Do i understand correctly that this referes to the voltage difference between the two supply pin i.e. V… --- ## [INA238, Troubleshooting I2C Communication Failures (NACK) in TI Current Sense Power Monitors](https://forum.digikey.com/t/ina238-troubleshooting-i2c-communication-failures-nack-in-ti-current-sense-power-monitors/66748)
**Author:** [@johnleduc](https://forum.digikey.com/u/johnleduc)\ **Replies:** 0\ **Last updated:** [March 18, 2026, 1:47pm UTC](https://forum.digikey.com/t/ina238-troubleshooting-i2c-communication-failures-nack-in-ti-current-sense-power-monitors/66748 "2026-03-18T13:47:23Z")
Q1 - I’m getting a “no acknowledge” (NACK) when I try to communicate with the power monitor? TI Answer; When a TI power monitor, for example the INA238, fails to acknowledge (NACK) I2C communications, the issue typical… --- ## [INA228 Current not reading as expected](https://forum.digikey.com/t/ina228-current-not-reading-as-expected/66747)
**Author:** [@johnleduc](https://forum.digikey.com/u/johnleduc)\ **Replies:** 0\ **Last updated:** [March 18, 2026, 1:41pm UTC](https://forum.digikey.com/t/ina228-current-not-reading-as-expected/66747 "2026-03-18T13:41:53Z")
INA228 - I’m reading the current register value, but the result is wrong. Why am I not reading the value that I expect to be reading? TI Answer; There can be many reasons why a result is not what you expect it to be. B… --- ## [INA139 NDAA Compliance](https://forum.digikey.com/t/ina139-ndaa-compliance/66746)
**Author:** [@johnleduc](https://forum.digikey.com/u/johnleduc)\ **Replies:** 0\ **Last updated:** [March 18, 2026, 1:34pm UTC](https://forum.digikey.com/t/ina139-ndaa-compliance/66746 "2026-03-18T13:34:56Z")
Q1 - Is INA139 NDAA compliant? Answer - TI is compliant with the current requirements of NDAA, including Section 889 and the upcoming Section 5949. Here is a general statement. Specifically for this product - it is ma… --- ## [REPLACEMENT ITEM DS1687-5+-ND WHICH HAS THE SAME FUNCTION](https://forum.digikey.com/t/replacement-item-ds1687-5-nd-which-has-the-same-function/66547)
**Author:** [@electrical.tools](https://forum.digikey.com/u/electrical.tools)\ **Replies:** 8\ **Last updated:** [March 17, 2026, 1:33pm UTC](https://forum.digikey.com/t/replacement-item-ds1687-5-nd-which-has-the-same-function/66547 "2026-03-17T13:33:51Z")
Dear Mr/Ms, On February 5, 2026, we ordered three items from DigiKey with order number REDACTED. 5 PCS - SN65HVD1791DR 5 PCS - HCPL0701V 1 PC - DS1687-5+ However, the manufacturer of the DS1687-5+ has changed the le… --- ## [What battery configurations are supported in Smart Power Bank?](https://forum.digikey.com/t/what-battery-configurations-are-supported-in-smart-power-bank/66680)
**Author:** [@aayushi.nainwal](https://forum.digikey.com/u/aayushi.nainwal)\ **Replies:** 0\ **Last updated:** [March 17, 2026, 12:13pm UTC](https://forum.digikey.com/t/what-battery-configurations-are-supported-in-smart-power-bank/66680 "2026-03-17T12:13:18Z")
The LTC4162 battery charger supports configurations of up to eight series-connected (8S) lithium-ion cells and is available in multiple variants optimized for different battery chemistries, LTC4162-L for lithium-ion, L… --- ## [How Does Single‑Board Smart Power Design Keep Your Device Running Even When Inputs Fail?](https://forum.digikey.com/t/how-does-single-board-smart-power-design-keep-your-device-running-even-when-inputs-fail/66674)
**Author:** [@aayushi.nainwal](https://forum.digikey.com/u/aayushi.nainwal)\ **Replies:** 0\ **Last updated:** [March 17, 2026, 10:50am UTC](https://forum.digikey.com/t/how-does-single-board-smart-power-design-keep-your-device-running-even-when-inputs-fail/66674 "2026-03-17T10:50:03Z")
In application such as power banks and other devices—where the system needs to run and charge the battery at the same time—power‑path charging is a great solution. This approach helps optimize battery performance and ex… --- ## [How Does the LTC4416 Enable Smart Power Switching in a Single‑Board System?](https://forum.digikey.com/t/how-does-the-ltc4416-enable-smart-power-switching-in-a-single-board-system/66673)
**Author:** [@aayushi.nainwal](https://forum.digikey.com/u/aayushi.nainwal)\ **Replies:** 0\ **Last updated:** [March 17, 2026, 9:41am UTC](https://forum.digikey.com/t/how-does-the-ltc4416-enable-smart-power-switching-in-a-single-board-system/66673 "2026-03-17T09:41:51Z")
As we saw in the previous design schematic of the single‑board system, dual input sources are implemented using the LTC4416 The LTC4416 creates seamless switching between two sources with a very low voltage drop, by red… --- ## [How Does the Smart Power Bank’s Design Manage Multiple Power Sources?](https://forum.digikey.com/t/how-does-the-smart-power-bank-s-design-manage-multiple-power-sources/66668)
**Author:** [@aayushi.nainwal](https://forum.digikey.com/u/aayushi.nainwal)\ **Replies:** 0\ **Last updated:** [March 17, 2026, 7:15am UTC](https://forum.digikey.com/t/how-does-the-smart-power-bank-s-design-manage-multiple-power-sources/66668 "2026-03-17T07:15:41Z")
Design Block Layout for Single Board Smart Power Solution In this design, a compact and streamlined architecture is created to support two wide‑range input sources: a solar panel and an AC‑to‑DC adapter. The LTC4416 pow… --- ## [Why Choose a Single‑Board Smart Power Bank for Your Next Project?](https://forum.digikey.com/t/why-choose-a-single-board-smart-power-bank-for-your-next-project/66662)
**Author:** [@aayushi.nainwal](https://forum.digikey.com/u/aayushi.nainwal)\ **Replies:** 0\ **Last updated:** [March 17, 2026, 6:34am UTC](https://forum.digikey.com/t/why-choose-a-single-board-smart-power-bank-for-your-next-project/66662 "2026-03-17T06:34:57Z")
The smart power bank features a flexible setup capable of accepting multiple input power sources and intelligently managing battery charging while supplying power to the load. Unlike conventional power banks with a sing… --- ## [SOT-539A vs. SOT-539AN](https://forum.digikey.com/t/sot-539a-vs-sot-539an/66587)
**Author:** [@stakie](https://forum.digikey.com/u/stakie)\ **Replies:** 0\ **Last updated:** [March 14, 2026, 4:13pm UTC](https://forum.digikey.com/t/sot-539a-vs-sot-539an/66587 "2026-03-14T16:13:15Z")
I am looking into replacing a ART2K0FEU MOSFET in a 1 kW RF amplifier. The producer of the amplifier requires a SOT-539A package. On the digikey website I can only find SOT-539AN packages for this type of MOSFET. Are the… --- ## [ADG5436BCPZ-REEL7 Alternative](https://forum.digikey.com/t/adg5436bcpz-reel7-alternative/66575)
**Author:** [@chris\_groom](https://forum.digikey.com/u/chris_groom)\ **Replies:** 0\ **Last updated:** [March 14, 2026, 12:58am UTC](https://forum.digikey.com/t/adg5436bcpz-reel7-alternative/66575 "2026-03-14T00:58:13Z")
This post is for informational purposes only, please review any recommended parts and review the manufacturer’s datasheet before purchase. With ADG5436BCPZ-REEL7 by Analog Devices discontinued at DigiKey, we’ve had in… --- ## [AMC1301QDWVQ1 offset error excel sensing](https://forum.digikey.com/t/amc1301qdwvq1-offset-error-excel-sensing/66565)
**Author:** [@johnleduc](https://forum.digikey.com/u/johnleduc)\ **Replies:** 0\ **Last updated:** [March 13, 2026, 4:53pm UTC](https://forum.digikey.com/t/amc1301qdwvq1-offset-error-excel-sensing/66565 "2026-03-13T16:53:10Z")
Q1 - Does TI have a gain and offset error excel calculator for isolated voltage sensing? Answer Yes we do! The excel calculator can be used in order to calculate the expected gain and offset error. Simply choose the c… --- ## [Can LMH6518 from Texas Instruments be Driven by an FDA](https://forum.digikey.com/t/can-lmh6518-from-texas-instruments-be-driven-by-an-fda/66563)
**Author:** [@johnleduc](https://forum.digikey.com/u/johnleduc)\ **Replies:** 0\ **Last updated:** [March 13, 2026, 4:25pm UTC](https://forum.digikey.com/t/can-lmh6518-from-texas-instruments-be-driven-by-an-fda/66563 "2026-03-13T16:25:26Z")
Regarding LMH6518, In the datasheet it mentioned drive the input single ended, but did not mention FDA driving, I need to make sure it can be driven by an FDA? Answer The inputs of the LMH6518 are differential so you c… --- ## [Choosing the Right SiC Schottky Diodes](https://forum.digikey.com/t/choosing-the-right-sic-schottky-diodes/66560)
**Author:** [@aamado](https://forum.digikey.com/u/aamado)\ **Replies:** 0\ **Last updated:** [March 13, 2026, 3:51pm UTC](https://forum.digikey.com/t/choosing-the-right-sic-schottky-diodes/66560 "2026-03-13T15:51:30Z")
Choosing the Right SiC Schottky Diodes SBD, JBS and MPS Explained Why the Right SiC Schottky Structure Matters in Power Design If you design power converters, chargers, or automotive power systems, selecting the right… --- ## [Quadrature Encoder System Integration](https://forum.digikey.com/t/quadrature-encoder-system-integration/39576)
**Author:** [@APDahlen](https://forum.digikey.com/u/APDahlen)\ **Replies:** 0\ **Last updated:** [March 13, 2024, 9:59pm UTC](https://forum.digikey.com/t/quadrature-encoder-system-integration/39576 "2024-03-13T21:59:08Z")
A quadrature encoder is an electromechanical sensor used to measure changes in angular position, rotational velocity, and direction. It can also measure position relative to a known starting position. It features two sen… --- ## [How does the ICG feature detection algorithm ensure accurate SV calculation?](https://forum.digikey.com/t/how-does-the-icg-feature-detection-algorithm-ensure-accurate-sv-calculation/66496)
**Author:** [@aayushi.nainwal](https://forum.digikey.com/u/aayushi.nainwal)\ **Replies:** 0\ **Last updated:** [March 12, 2026, 12:58pm UTC](https://forum.digikey.com/t/how-does-the-icg-feature-detection-algorithm-ensure-accurate-sv-calculation/66496 "2026-03-12T12:58:07Z")
Raw impedance signals contain motion artifacts and noise. The system applies several signal processing steps: The raw impedance signal is first processed sequentially through a 50 Hz notch filter, a median filter, and a… --- ## [Why is the MAX30009 AFE ideal for bioimpedance and ICG applications?](https://forum.digikey.com/t/why-is-the-max30009-afe-ideal-for-bioimpedance-and-icg-applications/66495)
**Author:** [@aayushi.nainwal](https://forum.digikey.com/u/aayushi.nainwal)\ **Replies:** 0\ **Last updated:** [March 12, 2026, 12:16pm UTC](https://forum.digikey.com/t/why-is-the-max30009-afe-ideal-for-bioimpedance-and-icg-applications/66495 "2026-03-12T12:16:38Z")
The bioimpedance system uses ADI’s highly integrated analog front-end (AFE) chip to measure the signal as it offers several advantages. Wide Configurable Current Source The transmit channel integrates a sinusoidal cu… --- ## [Alternative for SDSDQAF3-008G-XI from SanDisk](https://forum.digikey.com/t/alternative-for-sdsdqaf3-008g-xi-from-sandisk/66467)
**Author:** [@shawn\_adams](https://forum.digikey.com/u/shawn_adams)\ **Replies:** 0\ **Last updated:** [March 11, 2026, 8:26pm UTC](https://forum.digikey.com/t/alternative-for-sdsdqaf3-008g-xi-from-sandisk/66467 "2026-03-11T20:26:43Z")
We do not currently carry the SDSDQAF3-008G-XI micro-SD card from SanDisk, however we do carry a similar memory card from Intelligent Memory Ltd. Please review the datasheets to ensure the alternative will work for your … --- ## [LM311 Zero Crossing](https://forum.digikey.com/t/lm311-zero-crossing/66462)
**Author:** [@johnleduc](https://forum.digikey.com/u/johnleduc)\ **Replies:** 0\ **Last updated:** [March 11, 2026, 7:29pm UTC](https://forum.digikey.com/t/lm311-zero-crossing/66462 "2026-03-11T19:29:56Z")
Q1 - We are trying to detect Zero Crossing Detection of Voltage (V) and Current (Amp ) with LM311. I have referred Document SNOSBJ1E Figure 54 Circuit as below. Is it the right method to connect CT for Zero Crossing Dete… --- ## [OPA137: MSOP-8 or VSSOP-8](https://forum.digikey.com/t/opa137-msop-8-or-vssop-8/66444)
**Author:** [@johnleduc](https://forum.digikey.com/u/johnleduc)\ **Replies:** 0\ **Last updated:** [March 11, 2026, 4:00pm UTC](https://forum.digikey.com/t/opa137-msop-8-or-vssop-8/66444 "2026-03-11T16:00:09Z")
Regarding: OPA137 As a PCB designer, I was burned by TI’s use of the WRONG name for the 0.65mm-pitch IC package. It cost me a Design Revision and some gratuitous adrenaline. TI’s own website provides the original Burr… --- ## [Need to know meaning of marking](https://forum.digikey.com/t/need-to-know-meaning-of-marking/66383)
**Author:** [@sutharat\_saesue](https://forum.digikey.com/u/sutharat_saesue)\ **Replies:** 1\ **Last updated:** [March 10, 2026, 3:29pm UTC](https://forum.digikey.com/t/need-to-know-meaning-of-marking/66383 "2026-03-10T15:29:52Z")
Hi Digikey TechForum Team, I buy MAX31855KASA+ : Maxim (GPV P/N 810330057R) with you but my QC need to know meaning of marking is M31855K + 2533A2 938AB so please advise me back as well. Thank you so much. [Previous page](https://forum.digikey.com/c/semiconductor/98.md?page=8) [Next page](https://forum.digikey.com/c/semiconductor/98.md?page=10)