Surface Mount Fixed Resistors

Resistors are referred to as a Passive Component. Surface Mount Resistors are more commonly known as SMD (surface mount device) or SMT (Surface mount technology) Resistors. These resistors offer advantages in space saving on Printed Circuit Boards (PCB’s).


Some common package sizes are 0201,0402,0603,0805,1206,1210,2020,2512


SMD Resistors are used in large volumes and are the preferred choice in electronics equipment due to their small size and high reliability. SMD resistors are particularly used in telecommunication, automotive (AEC Q200 qualified) and medical equipment, they also found in personal devices, displays and advanced technology research instruments.


SMD Fixed Resistors


Surface mount fixed resistors are the most widely used resistors as they reduce the flow of the electrical current in circuits. Similar to water flowing along a pipe, the tap controls the flow of water, a resistor controls the flow of current. They work to a fixed value the resistance does not change in temperature or voltage. The most commonly used fixed resistors values are 100KΩ,10kΩ,100Ω, 10Ω


Types of surface mount fixed resistors


  • Thin Film Resistors have a higher precision than the thick film

  • Thick Film Resistors are used for general use due to a lower price point.

  • Moulded Wirewound Resistors offer higher power

  • Foil Resistors for ultra-high precision and really low-Temperature coefficient of resistance

  • Shunts (current sense) Low ohmic values for where current measurement is critical

  • Melf (cylindrical) offering superb pulse load capability

What are surface mount fixed resistors used for?


SMD fixed resistors are very compact and used in most electronic board design. Due to their compact size and the continuous development of ever smaller footprints, this has allowed for the development of ever smaller PCB designs and the ability to get more from the board. The resistors can assist in the reduction of component count on the board.


High Power / Surge / pulse protection


Many manufacturers offer a higher power alternative for the various packages they have available. As an example the 0603 resistor package can vary from 0.1W to 0.25W (rated dissipation 70°C). The higher power alternatives can be used in applications where there is a need to protect against surges / pulses.


What is the difference between Thin Film Resistors and Thick Film Resistors?


The main difference being that the thick film resistors have a paste fired on to the manufacturers chosen substrate. Thin film resistors as the name suggests has an extremely thin metal film that is generally vacuum deposited on to the manufacturers chosen substrate.


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Description Price Resistance Package/Case Technology Tolerance Power Rating Temperature Coefficient Automotive Standard Dimensions Length Depth Height Series Minimum Operating Temperature Maximum Operating Temperature
RS Stock No. 180-9727
Mfr. Part No.ERA3AEB101V
BrandPanasonic
SGD0.182
Each (On a Reel of 500)
units
- - - - - - - - - - - - - -
RS Stock No. 566-535
Mfr. Part No.ERA3AEB101V
BrandPanasonic
SGD0.558
Each (In a Pack of 5)
units
100 Ω 0603 (1608M) Thin Film ±0.1% 0.1W ±25ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 741-9767
Mfr. Part No.ERA3AEB101V
BrandPanasonic
SGD0.058
Each (On a Reel of 5000)
units
100 Ω 0603 (1608M) Thin Film ±0.1% 0.1W ±25ppm/°C - - - - - ERA -55°C +155°C
RS Stock No. 865-4431
Mfr. Part No.ERJU06F36R0V
BrandPanasonic
SGD0.071
Each (In a Bag of 100)
units
36 Ω 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - ERJ -55°C +155°C
RS Stock No. 172-4304
Mfr. Part No.ERJU06F36R0V
BrandPanasonic
SGD0.025
Each (On a Reel of 5000)
units
36 Ω 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - ERJ -55°C +155°C
RS Stock No. 742-5822
Mfr. Part No.ERA6AEB4753V
BrandPanasonic
SGD0.056
Each (On a Reel of 5000)
units
475 kΩ 0805 (2012M) Thin Film ±0.1% 0.125W ±25ppm/°C - - - - - ERA -55°C +155°C
RS Stock No. 708-6938
Mfr. Part No.ERA6AEB4753V
BrandPanasonic
SGD0.56
Each (In a Pack of 5)
units
475 kΩ 0805 (2012M) Metal Film ±0.1% 0.125W ±25ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 814-6016
Mfr. Part No.ERJ-3EKF1963V
BrandPanasonic
SGD0.02
Each (In a Bag of 100)
units
1.96 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C AEC-Q200 - - - - ERJ3EK -55°C +155°C
RS Stock No. 110-0542
Mfr. Part No.ERA3ARB103V
BrandPanasonic
SGD0.322
Each (On a Reel of 5000)
units
10 kΩ 0603 (1608M) Metal Film ±0.1% 0.1W ±10ppm/°C - - - - - ERA -55°C +155°C
RS Stock No. 182-9211
Mfr. Part No.ERA3ARB103V
BrandPanasonic
SGD0.525
Each (On a Reel of 250)
units
- - - - - - - - - - - - - -
RS Stock No. 181-2451
Mfr. Part No.ERA3ARB103V
BrandPanasonic
SGD0.465
Each (On a Reel of 500)
units
- - - - - - - - - - - - - -
RS Stock No. 661-8723
Mfr. Part No.ERA3ARB103V
BrandPanasonic
SGD0.918
Each (In a Pack of 5)
units
10 kΩ 0603 (1608M) Metal Film ±0.1% 0.1W ±10ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 721-9239
Mfr. Part No.ERJT14J4R7U
BrandPanasonic
SGD0.836
Each (In a Pack of 5)
units
4.7 Ω 1210 (3225M) Thick Film ±5% 0.5W -100 → +600ppm/°C AEC-Q200 - - - - ERJT14 -55°C +155°C
RS Stock No. 922-9196
Mfr. Part No.ERJT14J4R7U
BrandPanasonic
SGD0.05
Each (On a Reel of 5000)
units
4.7 Ω 1210 (3225M) Thick Film ±5% 0.5W -100 → +600ppm/°C - - - - - ERJT14 -55°C +155°C
RS Stock No. 172-3637
Mfr. Part No.ERJT14J105U
BrandPanasonic
SGD0.05
Each (On a Reel of 5000)
units
1 MΩ 1210 (3225M) Thick Film ±5% 0.5W ±200ppm/°C AEC-Q200 - - - - ERJT14 -55°C +155°C
RS Stock No. 721-9652
Mfr. Part No.ERJT14J105U
BrandPanasonic
SGD0.844
Each (In a Pack of 5)
units
1 MΩ 1210 (3225M) Thick Film ±5% 0.5W ±200ppm/°C AEC-Q200 - - - - ERJT14 -55°C +155°C
RS Stock No. 111-8024
Mfr. Part No.ERJ8ENF1873V
BrandPanasonic
SGD0.017
Each (On a Reel of 5000)
units
187 kΩ 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - ERJ -55°C +155°C
RS Stock No. 169-1557
Mfr. Part No.ERA2AEB272X
BrandPanasonic
SGD0.082
Each (On a Reel of 10000)
units
2.7 kΩ 0402 (1005M) Metal Film ±0.1% 0.063W ±25ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 172-4021
Mfr. Part No.ERJT14J272U
BrandPanasonic
SGD0.05
Each (On a Reel of 5000)
units
2.7 kΩ 1210 (3225M) Thick Film ±5% 0.5W ±200ppm/°C AEC-Q200 - - - - ERJT14 -55°C +155°C
RS Stock No. 922-6037
Mfr. Part No.ERJ12RQF1R0U
BrandPanasonic
SGD0.191
Each (On a Reel of 5000)
units
1 Ω 1812 (4532M) Thick Film ±1% 0.5W ±100ppm/°C - - - - - ERJ12R -55°C +125°C