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. 866-5343
Mfr. Part No.CRS1050 R001 F 60PPM TR
BrandArcol
TWD29.60
Each (In a Bag of 5)
units
1 mΩ 1050 Metal Strip ±1% 4W ±60ppm/°C - - - - - CRS -55°C +170°C
RS Stock No. 809-8787
Mfr. Part No.RWS5 1R5 F B
BrandArcol
TWD34.00
Each
units
1.5 Ω - Wire Wound ±1% 5W ±50ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 781-1298
Mfr. Part No.RWS7 10R J
BrandArcol
TWD46.00
Each
units
10 Ω 0603 (1608M) Wire Wound ±5% 7W ±50ppm/°C - - - - - RWS -55°C +275°C
RS Stock No. 172-2121
Mfr. Part No.ACPP080522KBE
BrandArcol
TWD6.00
Each (On a Reel of 5000)
units
22 kΩ 0805 (2012M) Thin Film ±0.1% 0.1W ±25ppm/°C - - - - - ACPP -55°C +125°C
RS Stock No. 172-2107
Mfr. Part No.ACPP06035K6BE
BrandArcol
TWD4.70
Each (On a Reel of 5000)
units
5.6 kΩ 0603 (1608M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +125°C
RS Stock No. 668-8401
Mfr. Part No.ACPP0603360RBE
BrandArcol
TWD10.40
Each (In a Pack of 5)
units
360 Ω 0603 (1608M) Metal Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +155°C
RS Stock No. 809-8884
Mfr. Part No.RWS5 R27 J B
BrandArcol
TWD33.00
Each
units
270 mΩ - Wire Wound ±5% 5W ±90ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 781-1286
Mfr. Part No.RWS7 R1 J
BrandArcol
TWD46.00
Each
units
100 mΩ 0603 (1608M) Wire Wound ±5% 7W ±90ppm/°C - - - - - RWS -55°C +275°C
RS Stock No. 668-8316
Mfr. Part No.ACPP0603160RBE
BrandArcol
TWD10.20
Each (In a Pack of 5)
units
160 Ω 0603 (1608M) Metal Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +155°C
RS Stock No. 809-8831
Mfr. Part No.RWS5 27R F B
BrandArcol
TWD36.00
Each
units
27 Ω - Wire Wound ±1% 5W ±20ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 172-2127
Mfr. Part No.ACPP08053K0BE
BrandArcol
TWD4.70
Each (On a Reel of 5000)
units
3 kΩ 0805 (2012M) Thin Film ±0.1% 0.1W ±25ppm/°C - - - - - ACPP -55°C +125°C
RS Stock No. 809-8967
Mfr. Part No.RWS5 82R J B
BrandArcol
TWD33.00
Each
units
82 Ω 0805 (2012M) Wire Wound ±5% 5W ±20ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 668-8287
Mfr. Part No.ACPP060310KBE
BrandArcol
TWD8.80
Each (In a Pack of 5)
units
10 kΩ 0603 (1608M) Metal Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +155°C
RS Stock No. 172-2109
Mfr. Part No.ACPP060375RBE
BrandArcol
TWD4.00
Each (On a Reel of 5000)
units
75 Ω 0603 (1608M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +125°C
RS Stock No. 809-8850
Mfr. Part No.RWS5 150R F B
BrandArcol
TWD34.00
Each
units
150 Ω - Wire Wound ±1% 5W ±20ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 809-5191
Mfr. Part No.RWS1 1K J B
BrandArcol
TWD39.00
Each
units
1 kΩ - Wire Wound ±5% 1W ±50ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 166-4639
Mfr. Part No.ACPP0805180RBE
BrandArcol
TWD4.70
Each (On a Reel of 1000)
units
180 Ω 0805 (2012M) Metal Film ±0.1% 0.1W ±25ppm/°C - - - - - ACPP -55°C +155°C
RS Stock No. 809-8945
Mfr. Part No.RWS5 22R J B
BrandArcol
TWD33.00
Each
units
22 Ω - Wire Wound ±5% 5W ±20ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 172-2110
Mfr. Part No.ACPP06037K5BE
BrandArcol
TWD3.90
Each (On a Reel of 5000)
units
7.5 kΩ 0603 (1608M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +125°C
RS Stock No. 809-4867
Mfr. Part No.RWS3 100R J B
BrandArcol
TWD38.00
Each
units
100 Ω - Wire Wound ±5% 3W ±20ppm/°C - - - - - RWS -55°C +155°C