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. 678-9667
Mfr. Part No.CRCW060310K0FKEA
BrandVishay
PHP1.597
Each (In a Pack of 50)
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10kΩ 0603 Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 169-4216
Mfr. Part No.CRCW060310K0FKEA
BrandVishay
PHP0.197
Each (On a Reel of 5000)
units
10kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 182-3603
Mfr. Part No.CRCW060310K0FKEA
BrandVishay
PHP0.45
Each (On a Reel of 1000)
units
10kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/K AEC-Q200 - - - - CRCW -55°C +155°C
RS Stock No. 169-4925
Mfr. Part No.CRCW12064K70FKEA
BrandVishay
PHP0.432
Each (On a Reel of 5000)
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4.7kΩ 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 679-2049
Mfr. Part No.CRCW1206330RFKEA
BrandVishay
PHP4.121
Each (In a Pack of 50)
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330Ω 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 169-4881
Mfr. Part No.CRCW1206330RFKEA
BrandVishay
PHP0.432
Each (On a Reel of 5000)
units
330Ω 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 679-0419
Mfr. Part No.CRCW0603470RFKEA
BrandVishay
PHP1.597
Each (In a Pack of 50)
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470Ω 0603 Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 181-7853
Mfr. Part No.CRCW0603470RFKEA
BrandVishay
PHP0.214
Each (On a Reel of 1000)
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- - - - - - - - - - - - - -
RS Stock No. 169-4398
Mfr. Part No.CRCW0603470RFKEA
BrandVishay
PHP0.192
Each (On a Reel of 5000)
units
470Ω 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 679-2184
Mfr. Part No.CRCW12064K70FKEA
BrandVishay
PHP4.121
Each (In a Pack of 50)
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4.7kΩ 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 169-4451
Mfr. Part No.CRCW060368K0FKEA
BrandVishay
PHP0.258
Each (On a Reel of 5000)
units
68kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 679-1765
Mfr. Part No.CRCW120610K0FKEA
BrandVishay
PHP4.121
Each (In a Pack of 50)
units
10kΩ 1206 Thick Film ±1% 0.25W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 169-4792
Mfr. Part No.CRCW120610K0FKEA
BrandVishay
PHP0.438
Each (On a Reel of 5000)
units
10kΩ 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 679-0633
Mfr. Part No.CRCW060368K0FKEA
BrandVishay
PHP1.776
Each (In a Pack of 50)
units
68kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 173-2902
Mfr. Part No.Y14750R10000B9R
BrandVishay
PHP829.24
Each (On a Tape of 10)
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100mΩ 3637 Metal Strip ±0.1% 2W ±15ppm/°C - - - - - CSM -65°C +170°C
RS Stock No. 684-1646
Mfr. Part No.Y14750R10000B9R
BrandVishay
PHP1,325.46
Each
units
100mΩ 3637 Metal Strip ±0.1% 2W ±15ppm/°C - - - - - CSM -65°C +170°C
RS Stock No. 169-4790
Mfr. Part No.CRCW1206100KFKEA
BrandVishay
PHP0.432
Each (On a Reel of 5000)
units
100kΩ 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 679-1761
Mfr. Part No.CRCW1206100KFKEA
BrandVishay
PHP3.838
Each (In a Pack of 50)
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100kΩ 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 684-2579
Mfr. Part No.P0603Y1002BNTA
BrandVishay
PHP342.39
Each
units
10kΩ 0603 (1608M) Thin Film ±0.1% 0.125W ±10ppm/°C - - - - - P -55°C +155°C
RS Stock No. 182-5206
Mfr. Part No.CRCW08054K02FKEA
BrandVishay
PHP0.525
Each (On a Reel of 1000)
units
- - - - - - - - - - - - - -