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. 781-1327
Mfr. Part No.RWS10 1R J
BrandArcol
TWD62.00
Each
units
1 Ω - Wire Wound ±5% 10W ±50ppm/°C - - - - - RWS -55°C +275°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. 668-8564
Mfr. Part No.ACPP0805180RBE
BrandArcol
TWD9.20
Each (In a Pack of 5)
units
180 Ω 0805 (2012M) Metal Film ±0.1% 0.1W ±25ppm/°C - - - - - ACPP -55°C +155°C
RS Stock No. 172-2086
Mfr. Part No.ACPP060316KBE
BrandArcol
TWD4.50
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. 781-1292
Mfr. Part No.RWS7 20R J
BrandArcol
TWD45.00
Each
units
20 Ω - Wire Wound ±5% 7W ±20ppm/°C - - - - - RWS -55°C +275°C
RS Stock No. 166-4651
Mfr. Part No.ACPP060310KBE
BrandArcol
TWD4.50
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. 172-2140
Mfr. Part No.RWS7 10R J
BrandArcol
TWD39.20
Each (In a Bag of 100)
units
10 Ω - Wire Wound ±5% 7W ±50ppm/°C - - - - - RWS -55°C +275°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. 809-8973
Mfr. Part No.RWS5 150R J B
BrandArcol
TWD33.00
Each
units
150 Ω - Wire Wound ±5% 5W ±20ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 172-2091
Mfr. Part No.ACPP060322KBE
BrandArcol
TWD3.90
Each (On a Reel of 5000)
units
22 kΩ 0603 (1608M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +125°C
RS Stock No. 809-8816
Mfr. Part No.RWS5 12R F B
BrandArcol
TWD34.00
Each
units
12 Ω - Wire Wound ±1% 5W ±20ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 172-2141
Mfr. Part No.RWS7 47R J
BrandArcol
TWD26.30
Each (In a Bag of 100)
units
- - Wire Wound ±5% 7W ±20ppm/°C - - - - - RWS -55°C +275°C
RS Stock No. 809-8932
Mfr. Part No.RWS5 6R8 J B
BrandArcol
TWD33.00
Each
units
6.8 Ω - Wire Wound ±5% 5W ±50ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 809-8872
Mfr. Part No.RWS5 R18 J B
BrandArcol
TWD33.00
Each
units
180 mΩ - Wire Wound ±5% 5W ±90ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 809-8793
Mfr. Part No.RWS5 2R7 F B
BrandArcol
TWD36.00
Each
units
2.7 Ω 0805 (2012M) Wire Wound ±1% 5W ±50ppm/°C - - - - - RWS -55°C +155°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. 809-8838
Mfr. Part No.RWS5 39R F B
BrandArcol
TWD34.00
Each
units
39 Ω 0805 (2012M) Wire Wound ±1% 5W ±20ppm/°C - - - - - RWS -55°C +155°C
RS Stock No. 668-8401
Mfr. Part No.ACPP0603360RBE
BrandArcol
TWD10.20
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. 172-2129
Mfr. Part No.ACPP080547RBE
BrandArcol
TWD5.90
Each (On a Reel of 5000)
units
47 Ω 0805 (2012M) Thin Film ±0.1% 0.1W ±25ppm/°C - - - - - ACPP -55°C +125°C