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. 181-8037
Mfr. Part No.CRCW0603220KFKEA
BrandVishay
kr 0,06
Each (On a Reel of 1000)
Units
- - - - - - - - - - - - - -
RS Stock No. 181-8079
Mfr. Part No.CRCW06034K70FKEA
BrandVishay
kr 0,064
Each (On a Reel of 1000)
Units
- - - - - - - - - - - - - -
RS Stock No. 169-4416
Mfr. Part No.CRCW06034K70FKEA
BrandVishay
kr 0,095
Each (On a Reel of 5000)
Units
4.7 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 169-4292
Mfr. Part No.CRCW0603220KFKEA
BrandVishay
kr 0,05
Each (On a Reel of 5000)
Units
220 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 122-6341
Mfr. Part No.CPF0402B105KE1
kr 3,774
Each (In a Bag of 20)
Units
105 kΩ 0402 (1005M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - CPF -55°C +155°C
RS Stock No. 223-0405
Mfr. Part No.CRG0805F680R
kr 0,10
Each (In a Pack of 50)
Units
680 Ω 0805 Thick Film ±1% 0.125W ±100ppm/°C - 2 x 0.5mm 2mm 1.25mm 0.5mm CRG -55°C +125°C
RS Stock No. 678-9986
Mfr. Part No.CRCW0603220KFKEA
BrandVishay
kr 0,385
Each (In a Pack of 50)
Units
220 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 123-7028
Mfr. Part No.CPF0402B105KE1
kr 1,428
Each (On a Reel of 1000)
Units
105 kΩ 0402 (1005M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - CPF -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
RS Stock No. 173-2894
Mfr. Part No.Y14870R01000B9R
BrandVishay
kr 69,51
Each (On a Tape of 100)
Units
10 mΩ 2512 (6432M) Metal Strip ±0.1% 1W ±15ppm/°C - - - - - CSM -65°C +170°C
RS Stock No. 162-2439
Mfr. Part No.D2TO020C22R00FRE3
BrandVishay
kr 62,614
Each (In a Tube of 50)
Units
22 Ω TO-263 Metal Film ±1% 20W ±150ppm/°C - - - - - D2TO20 -55°C +155°C
RS Stock No. 169-4382
Mfr. Part No.CRCW06033K90FKEA
BrandVishay
kr 0,034
Each (On a Reel of 5000)
Units
3.9 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 123-7079
Mfr. Part No.CPF0402B210KE1
kr 1,462
Each (On a Reel of 1000)
Units
210 kΩ 0402 (1005M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - CPF -55°C +155°C
RS Stock No. 822-8067
Mfr. Part No.D2TO020C22R00FRE3
BrandVishay
kr 173,48
Each
Units
22 Ω TO-263 Thick Film ±1% 20W ±150ppm/°C - - - - - D2TO20 -55°C +155°C
RS Stock No. 169-4265
Mfr. Part No.CRCW06031K00FKEA
BrandVishay
kr 0,039
Each (On a Reel of 5000)
Units
1 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 618-3987
Mfr. Part No.RC0805FR-0722RL
BrandYageo
kr 488,53
1 Pack of 5000
Pack(s)
22 Ω 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - RC0805 -55°C +155°C
RS Stock No. 679-0349
Mfr. Part No.CRCW06033K90FKEA
BrandVishay
kr 0,385
Each (In a Pack of 50)
Units
3.9 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 684-1630
Mfr. Part No.Y14870R01000B9R
BrandVishay
kr 74,58
Each
Units
10 mΩ 2512 (6432M) Metal Strip ±0.1% 1W ±15ppm/°C - - - - - CSM -65°C +170°C
RS Stock No. 181-7780
Mfr. Part No.CRCW06031K00FKEA
BrandVishay
kr 0,064
Each (On a Reel of 1000)
Units
- - - - - - - - - - - - - -
RS Stock No. 678-9875
Mfr. Part No.CRCW06031K00FKEA
BrandVishay
kr 0,277
Each (In a Pack of 50)
Units
1 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
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