This Product Selection Guide contains information to help select products in the Chip Resistor-Surface Mount category on DigiKey.com
A chip resistor - surface mount (SMT) is a type of resistor designed for surface-mount technology, which allows electronic components to be mounted directly onto the surface of printed circuit boards (PCBs). These resistors are typically rectangular or cylindrical and are available in various sizes to fit different PCB layouts and design requirements.
Key features of chip resistors - surface mount include:
Compact Size: Their small size allows for high-density circuit designs, making them ideal for modern electronics where space is at a premium.
Ease of Assembly: Designed for automated placement, chip resistors streamline the manufacturing process, reducing assembly time and costs.
Reliability: With no leads to bend or break, SMT chip resistors offer enhanced mechanical stability and reliability.
Wide Range of Values: Available in various resistance values, tolerances, and power ratings to suit diverse application needs.
Thermal Performance: Good thermal conductivity helps in dissipating heat, ensuring stable performance in various operating conditions.Chip resistor surface mount (SMT) composition types refer to the materials and manufacturing processes used to create these resistors. The main types include:
Thick Film Resistors:
Composition: Made by screen-printing a resistive paste (a mixture of ceramic and conductive materials) onto a ceramic substrate.
Characteristics: Cost-effective, widely used, and suitable for general-purpose applications. They offer good stability and are available in a wide range of resistance values.
Applications: Consumer electronics, automotive, industrial controls.Thin Film Resistors:
Composition: Manufactured by depositing a very thin layer of resistive material (such as nickel-chromium) onto an insulating substrate through sputtering or evaporation.
Characteristics: Provide higher precision, better stability, and tighter tolerance compared to thick film resistors. They are also more expensive.
Applications: High-precision and high-reliability applications such as medical devices, instrumentation, and communication equipment.Metal Film Resistors:
Composition: Similar to thin film resistors but generally involve a thicker layer of metal alloy deposited on a ceramic base.
Characteristics: Known for excellent accuracy, stability, and low noise. They offer better performance than thick film resistors but are less precise than thin film resistors.
Applications: Precision circuits, audio equipment, and various instrumentation.Metal Element Resistors:
Composition: Consist of a metal oxide film, such as tin oxide, deposited on a ceramic substrate.
Characteristics: Offer good stability, high-temperature performance, and resistance to overloads and environmental factors. They are typically more robust than metal film resistors.
Applications: Power supplies, motor controls, and industrial equipment.Carbon Film Resistors:
Composition: Made by depositing a thin layer of carbon onto a ceramic substrate.
Characteristics: Less stable and accurate compared to metal and oxide films but are cost-effective for general-purpose applications.
Applications: Low-cost consumer electronics, general-purpose circuits.Each composition type offers distinct advantages and is chosen based on the specific requirements of the application, including factors like precision, stability, cost, and environmental conditions.
Applications for chip resistors - surface mount include consumer electronics, telecommunications, automotive systems, industrial equipment, and medical devices. Their compact form factor and reliable performance make them essential components in the design and manufacture of modern electronic circuits.
SelectionCharacteristics
Resistance: Characterizes the nominal resistance of a current path through a device.
Tolerance: Characterizes the extent of permitted variability of overall device resistance among samples of a given part number, resulting from variations in manufacturing.
Power(Watts): Identifies the amount of heat that can be continuously dissipated by the resistive element without damaging the device. Measured in Watts (W) and typically based on the size of the device.
Composition: Indicates the basic material type/construction method used to construct a product’s resistive element.
Features: These are different capabilities of the device such as anti-corrosive, current sense, or moisture resistant.
Temperature Coefficient: The temperature coefficient of resistance (TCR) is a constant that represents the resistance change per degree Celsius of temperature change over a specific temperature range; it’s expressed as ppm/°C (parts per million per degree centigrade).
Operating Temperature: Recommended operating temperature, typically given in a range or as a maximum. Exceeding these temperatures may affect performance or damage the device and/or other system components.
Package/Case: The protective case on an electronic component which allows for easy handling, installation, and protects the device. This is what we determined is the closest industry standard to the supplier device package. Typically, it is best to use the actual dimensions from the datasheet rather than to go by this terminology when designing your circuit.
Supplier Device Package: This is what the manufacturer calls the package of this device. They are manufacturer specific. It is typically best to use the actual dimensions from the datasheets rather than to go by this terminology when designing your circuit.
Ratings: Minimum performance standards of the device typically set by a third party.
Size/Dimensions: The physical dimensions of the device. Typically length, width, height.
Height - Seated(Max): How far the device will extend above the surface it is attached to.
Number of Terminations: Number of electrical contacts on the resistor.
Failure Rate: A factor used for reliability calculations that accounts for initial production quality, per MIL-HDBK-217. Typically N/A for parts not manufactured to military specification.
ProductExamples
| MFR PART # | RL0510S-5R1-F |
|---|---|
| DIGIKEY PART # | 408-1454-2-ND - Tape & Reel (TR) |
| MANUFACTURER | Susumu |
| DESCRIPTION | 5.1 Ohms ±1% 0.167W, 1/6W Chip Resistor 0402 (1005 Metric) Current Sense Thin Film |
| DATASHEET | Click Here |
| MFR PART # | ERJ-XGN0R00Y |
|---|---|
| DIGIKEY PART # | P0.0AWTR-ND - Tape & Reel (TR) |
| MANUFACTURER | Panasonic Electronic Components |
| DESCRIPTION | 0 Ohms Jumper 0.03W, 1/32W Chip Resistor 01005 (0402 Metric) - Thick Film |
| DATASHEET | Click Here |
| MFR PART # | RC0S2CA47R0JE |
|---|---|
| DIGIKEY PART # | 2485-RC0S2CA47R0JE-ND |
| MANUFACTURER | Ohmite |
| DESCRIPTION | RES SMD 47 OHM 5% 1/4W J LEAD |
| DATASHEET | Click Here |
| MFR PART # | RW3R0DBR100JET |
|---|---|
| DIGIKEY PART # | RW3R0DBR100JETR-ND - Tape & Reel (TR) |
| MANUFACTURER | Ohmite |
| DESCRIPTION | 100 mOhms ±5% 3W Chip Resistor 6327 J-Lead Current Sense Wirewound |
| DATASHEET | Click Here |
| MFR PART # | MMP200FRE36K |
|---|---|
| DIGIKEY PART # | YAG5801TR-ND - Tape & Reel (TR) |
| MANUFACTURER | YAGEO |
| DESCRIPTION | 36 kOhms ±1% 2W Chip Resistor MELF, 0309 - Metal Film |
| DATASHEET | Click Here |
| MFR PART # | PFS35-20RF1 |
|---|---|
| DIGIKEY PART # | 696-1282-2-ND - Tape & Reel (TR) |
| MANUFACTURER | Riedon |
| DESCRIPTION | 20 Ohms ±1% 35W Chip Resistor Non-Standard D-PAK Current Sense, Pulse Withstanding Thin Film |
| DATASHEET | Click Here |
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MediaLinks
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