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. 169-4216
Mfr. Part No.CRCW060310K0FKEA
BrandVishay
kr 0,037
Each (On a Reel of 5000)
Units
10 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 134-5516
Mfr. Part No.CRG1206F1K0
kr 0,069
Each (On a Reel of 5000)
Units
1 kΩ 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - CRG -55°C +125°C
RS Stock No. 182-3603
Mfr. Part No.CRCW060310K0FKEA
BrandVishay
kr 0,067
Each (On a Reel of 1000)
Units
10 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/K AEC-Q200 - - - - CRCW -55°C +155°C
RS Stock No. 125-1190
Mfr. Part No.CRG1206F1K0
kr 0,128
Each (In a Bag of 100)
Units
1 kΩ 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - CRG -55°C +125°C
RS Stock No. 678-9667
Mfr. Part No.CRCW060310K0FKEA
BrandVishay
kr 0,411
Each (In a Pack of 50)
Units
10 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 678-9673
Mfr. Part No.CRCW0603100KFKEA
BrandVishay
kr 0,463
Each (In a Pack of 50)
Units
100 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 153-747
Mfr. Part No.ERJP06J222V
BrandPanasonic
kr 0,405
Each (In a Pack of 500)
Units
2.2 kΩ 0805 (2012M) Thick Film ±5% 0.5W ±200ppm/°C AEC-Q200 - - - - ERJP06 -55°C +155°C
RS Stock No. 169-4218
Mfr. Part No.CRCW0603100KFKEA
BrandVishay
kr 0,037
Each (On a Reel of 5000)
Units
100 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 161-7109
Mfr. Part No.PWR163S-25-3R00F
BrandBourns
kr 19,443
Each (In a Tube of 50)
Units
3 Ω DPAK Metal Film ±1% 25W ±100ppm/°C AEC-Q200 - - - - PWR163 -55°C +155°C
RS Stock No. 182-3577
Mfr. Part No.CRCW0603100KFKEA
BrandVishay
kr 0,094
Each (On a Reel of 1000)
Units
100 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/K AEC-Q200 - - - - CRCW -55°C +155°C
RS Stock No. 919-0480
Mfr. Part No.ERJP06J222V
BrandPanasonic
kr 0,149
Each (On a Reel of 5000)
Units
2.2 kΩ 0805 (2012M) Thick Film ±5% 0.5W ±200ppm/°C - - - - - ERJP06 -55°C +155°C
RS Stock No. 819-9990
Mfr. Part No.PWR163S-25-3R00F
BrandBourns
kr 25,22
Each
Units
3 Ω DPAK Thick Film ±1% 25W ±100ppm/°C AEC-Q200 - - - - PWR163 -55°C +155°C
RS Stock No. 223-1997
Mfr. Part No.CRG1206F10R
kr 0,491
Each (In a Pack of 50)
Units
10 Ω 1206 (3216M) Thick Film ±1% 0.25W 100ppm/°C - - - - - CRG -55°C +125°C
RS Stock No. 169-4279
Mfr. Part No.CRCW06031M00FKEA
BrandVishay
kr 0,037
Each (On a Reel of 5000)
Units
1 MΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 143-885
Mfr. Part No.WRM0207C-150RFI
BrandWelwyn
kr 0,725
Each (In a Pack of 250)
Units
150 Ω Melf 0207 Metal Film ±1% 0.4W ±50ppm/°C - - - - - WRM -55°C +125°C
RS Stock No. 181-7872
Mfr. Part No.CRCW06031M00FKEA
BrandVishay
kr 0,053
Each (On a Reel of 1000)
Units
- - - - - - - - - - - - - -
RS Stock No. 134-5501
Mfr. Part No.CRG1206F10R
kr 0,109
Each (On a Reel of 5000)
Units
10 Ω 0402 (1005M) Thick Film ±1% 0.25W 100ppm/°C - - - - - CRG -55°C +125°C
RS Stock No. 363-6797
Mfr. Part No.SR10-0.020-1%
BrandCaddock
kr 41,97
Each
Units
20 mΩ - - ±1% 1W 0 → +200ppm/°C - - - - - SR10 -15°C +105°C
RS Stock No. 678-9932
Mfr. Part No.CRCW06031M00FKEA
BrandVishay
kr 0,457
Each (In a Pack of 50)
Units
1 MΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 134-5472
Mfr. Part No.CRG0805F680R
kr 0,054
Each (On a Reel of 5000)
Units
680 Ω 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - CRG -55°C +125°C