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. 168-8120
Mfr. Part No.CRCW0402100KFKED
BrandVishay
€0.003
Each (On a Reel of 10000)
units
100 kΩ 0402 (1005M) Thick Film ±1% 0.063W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 922-9222
Mfr. Part No.ERJT14J111U
BrandPanasonic
€0.026
Each (On a Reel of 5000)
units
110 Ω 1210 (3225M) Thick Film ±5% 0.5W ±200ppm/°C - - - - - ERJT14 -55°C +155°C
RS Stock No. 164-6498
Mfr. Part No.TLM3AER01FTE
€0.234
Each (On a Reel of 4000)
units
10 mΩ 2512 (6432M) Metal Foil ±1% 1W ±50ppm/°C - - - - - TLM -55°C ++55°°C
RS Stock No. 901-3692
Mfr. Part No.MCR10EZPF1002
BrandROHM
€0.016
Each (In a Bag of 100)
units
10 kΩ 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 181-9119
Mfr. Part No.CRCW0402100KFKED
BrandVishay
€0.012
Each (On a Reel of 1000)
units
100 kΩ 0402 (1005M) Thick Film ±1% - - - - - - - CRCW -55°C +155°C
RS Stock No. 678-4684
Mfr. Part No.CRCW0402100KFKED
BrandVishay
€0.01
Each (In a Pack of 50)
units
100 kΩ 0402 (1005M) Thick Film ±1% 0.063W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 901-3689
Mfr. Part No.MCR10EZPF1000
BrandROHM
€0.016
Each (In a Bag of 100)
units
100 Ω 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 679-0368
Mfr. Part No.CRCW060341K2FKEA
BrandVishay
€0.01
Each (In a Pack of 50)
units
41.2 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 134-5474
Mfr. Part No.CRG0805F1K0
€0.004
Each (On a Reel of 5000)
units
1 kΩ 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - CRG -55°C +125°C
RS Stock No. 683-6366
Mfr. Part No.WSL080500000ZEA9
BrandVishay
€0.796
Each (In a Pack of 5)
units
0 Ω 0805 (2012M) Metal Strip ±0% 0.125W - - - - - - WSL -65°C +170°C
RS Stock No. 169-4387
Mfr. Part No.CRCW060341K2FKEA
BrandVishay
€0.006
Each (On a Reel of 5000)
units
41.2 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 678-9364
Mfr. Part No.CRCW040247K5FKED
BrandVishay
€0.045
Each (In a Pack of 50)
units
47.5 kΩ 0402 (1005M) Thick Film ±1% 0.063W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 169-1598
Mfr. Part No.ERJB2AF821V
BrandPanasonic
€0.143
Each (On a Reel of 5000)
units
820 Ω 0612 (1632M) Thick Film ±1% 0.75W ±100ppm/°C AEC-Q200 - - - - ERJB2 -55°C +155°C
RS Stock No. 134-5438
Mfr. Part No.CRG0603F1K0
€0.003
Each (On a Reel of 5000)
units
1 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRG -55°C +125°C
RS Stock No. 223-1981
Mfr. Part No.CRG1206ZR
€0.033
Each (In a Pack of 50)
units
0 Ω 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - CRG -55°C +125°C
RS Stock No. 167-9882
Mfr. Part No.WSL080500000ZEA9
BrandVishay
€0.233
Each (On a Reel of 5000)
units
0 Ω 0805 (2012M) Metal Strip ±0% 0.125W - - - - - - WSL -65°C +170°C
RS Stock No. 181-7857
Mfr. Part No.CRCW060341K2FKEA
BrandVishay
€0.006
Each (On a Reel of 1000)
units
- - - - - - - - - - - - - -
RS Stock No. 134-5445
Mfr. Part No.CRG0603F10K
€0.003
Each (On a Reel of 5000)
units
10 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRG -55°C +125°C
RS Stock No. 125-1189
Mfr. Part No.CRG0805F10K
€0.009
Each (In a Bag of 100)
units
10 kΩ 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - CRG -55°C +125°C
RS Stock No. 134-5500
Mfr. Part No.CRG1206ZR
€0.009
Each (On a Reel of 5000)
units
0 Ω 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - CRG -55°C +125°C
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