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. 809-8787
Mfr. Part No.RWS5 1R5 F B
BrandArcol
€0.94
Each
units
1.5 Ω - Wire Wound ±1% 5W ±50ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 668-8524
Mfr. Part No.ACPP0805 10K B 25PPM
BrandArcol
€0.406
Each (In a Pack of 5)
units
10 kΩ 0805 (2012M) Metal Film ±0.1% 0.1W ±25ppm/°C - - - - - ACPP -55°C +155°C
RS Stock No. 172-2114
Mfr. Part No.ACPP0805 10K B 25PPM
BrandArcol
€0.138
Each (On a Reel of 5000)
units
10 kΩ 0805 (2012M) Thin Film ±0.1% 0.1W ±25ppm/°C - - - - - ACPP -55°C +125°C
RS Stock No. 809-8976
Mfr. Part No.RWS5 100R J B
BrandArcol
€0.84
Each
units
100 Ω - Wire Wound ±5% 5W ±20ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 809-8869
Mfr. Part No.RWS5 180R F B
BrandArcol
€0.94
Each
units
180 Ω 0805 (2012M) Wire Wound ±1% 5W ±20ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 172-2129
Mfr. Part No.ACPP080547RBE
BrandArcol
€0.203
Each (On a Reel of 5000)
units
47 Ω 0805 (2012M) Thin Film ±0.1% 0.1W ±25ppm/°C - - - - - ACPP -55°C +125°C
RS Stock No. 809-5163
Mfr. Part No.RWS1 R5 J B
BrandArcol
€1.42
Each
units
500 mΩ - Wire Wound ±5% 1W ±90ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 166-4651
Mfr. Part No.ACPP060310KBE
BrandArcol
€0.133
Each (On a Reel of 1000)
units
10 kΩ 0603 (1608M) Metal Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +155°C
RS Stock No. 172-2084
Mfr. Part No.ACPP0603160RBE
BrandArcol
€0.14
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. 781-1302
Mfr. Part No.RWS7 47R J
BrandArcol
€1.66
Each
units
47 Ω - Wire Wound ±5% 7W ±20ppm/°C - - - - - RWS -55°C +275°C
RS Stock No. 172-2090
Mfr. Part No.ACPP060320KBE
BrandArcol
€0.083
Each (On a Reel of 5000)
units
20 kΩ 0603 (1608M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +125°C
RS Stock No. 809-8872
Mfr. Part No.RWS5 R18 J B
BrandArcol
€0.92
Each
units
180 mΩ - Wire Wound ±5% 5W ±90ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 809-8774
Mfr. Part No.RWS5 R47 F B
BrandArcol
€0.94
Each
units
470 mΩ - Wire Wound ±1% 5W ±90ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 809-8989
Mfr. Part No.RWS5 390R J B
BrandArcol
€0.92
Each
units
390 Ω - Wire Wound ±5% 5W ±20ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 172-2123
Mfr. Part No.ACPP0805330RBE
BrandArcol
€0.138
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. 668-8381
Mfr. Part No.ACPP06032K0BE
BrandArcol
€0.258
Each (In a Pack of 5)
units
2 kΩ 0603 (1608M) Metal Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +155°C
RS Stock No. 172-2137
Mfr. Part No.RWS7 R1 J
BrandArcol
€0.954
Each (In a Bag of 100)
units
100 mΩ - Wire Wound ±5% 7W ±90ppm/°C - - - - - RWS -55°C +275°C
RS Stock No. 172-2086
Mfr. Part No.ACPP060316KBE
BrandArcol
€0.125
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. 668-8495
Mfr. Part No.ACPP060375RBE
BrandArcol
€0.21
Each (In a Pack of 5)
units
75 Ω 0603 (1608M) Metal Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +155°C
RS Stock No. 668-8637
Mfr. Part No.ACPP0805300RBE
BrandArcol
€0.406
Each (In a Pack of 5)
units
300 Ω 0805 (2012M) Metal Film ±0.1% 0.1W ±25ppm/°C - - - - - ACPP -55°C +155°C