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. 110-0482
Mfr. Part No.ERJM1WSF5M0U
BrandPanasonic
$782.43
1 Reel of 3000
Reel(s)
5 mΩ 2512 (6432M) Thick Film ±1% 1W ±100ppm/°C - - - - - ERJM1W -55°C +170°C
RS Stock No. 565-948
Mfr. Part No.ERA6AEB103V
BrandPanasonic
$0.754
Each (In a Pack of 5)
units
10 kΩ 0805 Thin Film ±0.1% 0.125W ±25ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 742-4908
Mfr. Part No.ERA6AEB103V
BrandPanasonic
$0.063
Each (On a Reel of 5000)
units
10 kΩ 0805 (2012M) Thin Film ±0.1% 0.125W ±25ppm/°C - - - - - ERA -55°C +155°C
RS Stock No. 567-039
Mfr. Part No.ERJM1WSF5M0U
BrandPanasonic
$1.01
Each (In a Pack of 5)
units
5 mΩ 2512 (6432M) Thick Film ±1% 1W ±100ppm/°C - - - - - ERJM1W -55°C +170°C
RS Stock No. 919-0622
Mfr. Part No.ERJP14J1R0U
BrandPanasonic
$264.60
1 Reel of 5000
Reel(s)
1 Ω 1210 (3225M) Thick Film ±5% 0.5W -100 → +600ppm/°C - - - - - ERJP14 -55°C +155°C
RS Stock No. 154-328
Mfr. Part No.ERJP14J1R0U
BrandPanasonic
$0.145
Each (In a Pack of 250)
units
1 Ω 1210 (3225M) Thick Film ±5% 0.5W -100 → +600ppm/°C AEC-Q200 - - - - ERJP14 -55°C +155°C
RS Stock No. 172-4055
Mfr. Part No.ERJP6WF1302V
BrandPanasonic
$0.197
Each (On a Reel of 5000)
units
13 kΩ 0805 (2012M) Thick Film ±1% 0.5W ±200ppm/°C AEC-Q200 - - - - ERJP6W -55°C +155°C
RS Stock No. 770-8603
Mfr. Part No.ERJP6WF1302V
BrandPanasonic
$0.194
Each (In a Pack of 100)
units
13 kΩ 0805 (2012M) Thick Film ±1% 0.5W ±200ppm/°C AEC-Q200 - - - - ERJP6W -55°C +155°C
RS Stock No. 172-3533
Mfr. Part No.ERJU03F9100V
BrandPanasonic
$0.033
Each (On a Reel of 5000)
units
910 Ω 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - ERJU03 -55°C +155°C
RS Stock No. 873-9608
Mfr. Part No.ERJU03F9100V
BrandPanasonic
$0.048
Each (In a Bag of 100)
units
910 Ω 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - ERJU03 -55°C +155°C
RS Stock No. 662-0495
Mfr. Part No.ERA6ARB103V
BrandPanasonic
$1.058
Each (In a Pack of 5)
units
10 kΩ 0805 (2012M) Metal Film ±0.1% 0.125W ±10ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 106-8895
Mfr. Part No.ERA6AEB4023V
BrandPanasonic
$414.20
1 Reel of 5000
Reel(s)
402 kΩ 0805 (2012M) Metal Film ±0.1% 0.125W ±25ppm/°C - - - - - ERA -55°C +155°C
RS Stock No. 172-4204
Mfr. Part No.ERJPA3F1001V
BrandPanasonic
$0.027
Each (On a Reel of 5000)
units
1 kΩ 0603 (1608M) Thick Film ±1% 0.25W ±100ppm/°C AEC-Q200 - - - - ERJPA3 -55°C +155°C
RS Stock No. 708-6907
Mfr. Part No.ERA6AEB4023V
BrandPanasonic
$0.288
Each (In a Pack of 5)
units
402 kΩ 0805 (2012M) Metal Film ±0.1% 0.125W ±25ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 862-6701
Mfr. Part No.ERJPA3F1001V
BrandPanasonic
$0.069
Each (In a Bag of 100)
units
1 kΩ 0603 (1608M) Thick Film ±1% 0.25W ±100ppm/°C AEC-Q200 - - - - ERJPA3 -55°C +155°C
RS Stock No. 922-9345
Mfr. Part No.ERJP08F2000V
BrandPanasonic
$305.20
1 Reel of 5000
Reel(s)
200 Ω 1206 (3216M) Thick Film ±1% 0.66W ±100ppm/°C - - - - - ERJP08 -55°C +155°C
RS Stock No. 662-1335
Mfr. Part No.ERA6ARW512V
BrandPanasonic
$0.49
Each (In a Pack of 5)
units
5.1 kΩ 0805 (2012M) Metal Film ±0.05% 0.125W ±10ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 153-993
Mfr. Part No.ERJP08J102V
BrandPanasonic
$0.067
Each (In a Pack of 250)
units
1 kΩ 1206 (3216M) Thick Film ±5% 0.66W ±200ppm/°C AEC-Q200 - - - - ERJP08 -55°C +155°C
RS Stock No. 721-9765
Mfr. Part No.ERJP08F2000V
BrandPanasonic
$0.074
Each (In a Pack of 5)
units
200 Ω 1206 (3216M) Thick Film ±1% 0.66W ±100ppm/°C AEC-Q200 - - - - ERJP08 -55°C +155°C
RS Stock No. 121-3603
Mfr. Part No.ERJMP4MF50MU
BrandPanasonic
$0.627
Each (On a Tape of 10)
units
50 mΩ 2512 (6432M) Thick Film ±1% 1W ±75ppm/°C AEC-Q200 - - - - ERJMP4 -65°C +170°C