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 (PCBs).

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. 391-5501
Mfr. Part No.RR1220P-101-D
BrandSusumu Co
MYR0.14
Each (In a Pack of 100)
units
100Ω 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 601-9353
Mfr. Part No.RR1220P-201-D
BrandSusumu Co
MYR0.143
Each (In a Pack of 100)
units
200Ω 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 160-496
Mfr. Part No.RG1608N-151-W-T1
BrandSusumu Co
MYR2.60
Each (In a Pack of 20)
units
150Ω 0603 (1608M) Thin Film ±0.05% 0.1W ±10ppm/°C - - - - - - -55°C +155°C
RS Stock No. 474-4209
Mfr. Part No.RR0816Q-510-D
BrandSusumu Co
MYR0.143
Each (In a Pack of 100)
units
51Ω 0603 (1608M) Thin Film ±0.5% 0.063W ±50ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 601-9779
Mfr. Part No.RR1220P-753-D
BrandSusumu Co
MYR0.139
Each (In a Pack of 100)
units
75kΩ 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 391-5545
Mfr. Part No.RR1220P-471-D
BrandSusumu Co
MYR0.122
Each (In a Pack of 100)
units
470Ω 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 601-9476
Mfr. Part No.RR1220P-301-D
BrandSusumu Co
MYR0.143
Each (In a Pack of 100)
units
300Ω 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 601-9145
Mfr. Part No.RR1220P-105-D
BrandSusumu Co
MYR0.067
Each (In a Pack of 100)
units
1MΩ 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 601-9482
Mfr. Part No.RR1220P-302-D
BrandSusumu Co
MYR0.139
Each (In a Pack of 100)
units
3kΩ 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 391-5602
Mfr. Part No.RR1220P-332-D
BrandSusumu Co
MYR0.143
Each (In a Pack of 100)
units
3.3kΩ 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 474-4849
Mfr. Part No.RR0816P-823-D
BrandSusumu Co
MYR0.143
Each (In a Pack of 100)
units
82kΩ 0603 (1608M) Thin Film ±0.5% 0.063W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 601-9173
Mfr. Part No.RR1220P-113-D
BrandSusumu Co
MYR0.143
Each (In a Pack of 100)
units
11kΩ 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 161-770
Mfr. Part No.RG2012N-512-W-T1
BrandSusumu Co
MYR3.12
Each (In a Pack of 20)
units
5.1kΩ 0805 (2012M) Thin Film ±0.05% 0.125W ±10ppm/°C - - - - - - -55°C +155°C
RS Stock No. 391-5416
Mfr. Part No.RR0816P-224-D
BrandSusumu Co
MYR0.143
Each (In a Pack of 100)
units
220kΩ 0603 (1608M) Thin Film ±0.5% 0.063W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 391-5264
Mfr. Part No.RR0816P-102-D
BrandSusumu Co
MYR0.082
Each (In a Pack of 100)
units
1kΩ 0603 (1608M) Thin Film ±0.5% 0.063W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 134-6002
Mfr. Part No.KRL2012E-C-R003-F
BrandSusumu Co
MYR273.92
Each (In a Bag of 20)
units
3mΩ 2012 - ±1% 1W ±50ppm/°C - - - - - KRL -55°C +175°C
RS Stock No. 474-4748
Mfr. Part No.RR0816P-243-D
BrandSusumu Co
MYR0.143
Each (In a Pack of 100)
units
24kΩ 0603 (1608M) Thin Film ±0.5% 0.063W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 161-196
Mfr. Part No.RG1608N-124-W-T1
BrandSusumu Co
MYR2.60
Each (In a Pack of 20)
units
120kΩ 0603 (1608M) Thin Film ±0.05% 0.1W ±10ppm/°C - - - - - - -55°C +155°C
RS Stock No. 601-9319
Mfr. Part No.RR1220P-181-D
BrandSusumu Co
MYR0.122
Each (In a Pack of 100)
units
180Ω 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 520-3232
Mfr. Part No.RG1608Q-360-D
BrandSusumu Co
MYR0.542
Each (In a Pack of 50)
units
36Ω 0603 (1608M) Thin Film ±0.5% 0.1W ±50ppm/°C - - - - - RG -55°C +155°C