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. 809-8780
Mfr. Part No.RWS5 1R F B
BrandArcol
$1.69
Each
units
1 Ω 0805 (2012M) Wire Wound ±1% 5W ±50ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 781-1321
Mfr. Part No.RWS10 10R J
BrandArcol
$3.24
Each
units
10 Ω - Wire Wound ±5% 10W ±50ppm/°C - - - - - RWS -55°C +275°C
RS Stock No. 172-2180
Mfr. Part No.RWS10 10R J
BrandArcol
$2.811
Each (In a Bag of 100)
units
10 Ω - Wire Wound ±5% 10W ±50ppm/°C - - - - - RWS -55°C +275°C
RS Stock No. 809-2638
Mfr. Part No.RWS3 R15 F B
BrandArcol
$2.78
Each
units
150 mΩ - Wire Wound ±1% 3W ±90ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 172-2182
Mfr. Part No.RWS10 1R J
BrandArcol
$2.811
Each (In a Bag of 100)
units
1 Ω - Wire Wound ±5% 10W ±50ppm/°C - - - - - RWS -55°C +275°C
RS Stock No. 668-8325
Mfr. Part No.ACPP060316KBE
BrandArcol
$0.538
Each (In a Pack of 5)
units
16 kΩ 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
$1.65
Each
units
270 mΩ - Wire Wound ±5% 5W ±90ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 172-2084
Mfr. Part No.ACPP0603160RBE
BrandArcol
$0.307
Each (On a Reel of 5000)
units
160 Ω 0603 (1608M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +125°C
RS Stock No. 668-8362
Mfr. Part No.ACPP060322KBE
BrandArcol
$0.538
Each (In a Pack of 5)
units
22 kΩ 0603 (1608M) Metal Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +155°C
RS Stock No. 809-8783
Mfr. Part No.RWS5 1R2 F B
BrandArcol
$1.72
Each
units
1.2 Ω - Wire Wound ±1% 5W ±50ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 172-2141
Mfr. Part No.RWS7 47R J
BrandArcol
$1.374
Each (In a Bag of 100)
units
- - Wire Wound ±5% 7W ±20ppm/°C - - - - - RWS -55°C +275°C
RS Stock No. 809-5163
Mfr. Part No.RWS1 R5 J B
BrandArcol
$2.49
Each
units
500 mΩ - Wire Wound ±5% 1W ±90ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 172-2123
Mfr. Part No.ACPP0805330RBE
BrandArcol
$0.334
Each (On a Reel of 5000)
units
330 Ω 0805 (2012M) Thin Film ±0.1% 0.1W ±25ppm/°C - - - - - ACPP -55°C +125°C
RS Stock No. 809-8888
Mfr. Part No.RWS5 R33 J B
BrandArcol
$1.65
Each
units
330 mΩ 0805 (2012M) Wire Wound ±5% 5W ±90ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 809-8787
Mfr. Part No.RWS5 1R5 F B
BrandArcol
$1.69
Each
units
1.5 Ω - Wire Wound ±1% 5W ±50ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 809-4867
Mfr. Part No.RWS3 100R J B
BrandArcol
$1.98
Each
units
100 Ω - Wire Wound ±5% 3W ±20ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 668-8401
Mfr. Part No.ACPP0603360RBE
BrandArcol
$0.554
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. 172-2086
Mfr. Part No.ACPP060316KBE
BrandArcol
$0.206
Each (On a Reel of 5000)
units
16 kΩ 0603 (1608M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +125°C
RS Stock No. 668-8454
Mfr. Part No.ACPP06034K7BE
BrandArcol
$0.464
Each (In a Pack of 5)
units
4.7 kΩ 0603 (1608M) Metal Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +155°C
RS Stock No. 668-8473
Mfr. Part No.ACPP060362RBE
BrandArcol
$0.538
Each (In a Pack of 5)
units
62 Ω 0603 (1608M) Metal Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +155°C