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. 179-0391
Mfr. Part No.RS73F1JTTD2202B
BrandKOA
£0.034
Each (On a Reel of 5000)
Units
22kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-1482
Mfr. Part No.RS73F1JTTD1802B
BrandKOA
£0.049
Each (On a Reel of 500)
Units
18kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-0392
Mfr. Part No.RS73F1JTTD2702B
BrandKOA
£0.034
Each (On a Reel of 5000)
Units
27kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-1496
Mfr. Part No.RS73F1JTTD1503B
BrandKOA
£0.049
Each (On a Reel of 500)
Units
150kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-0393
Mfr. Part No.RS73F1JTTD3302B
BrandKOA
£0.034
Each (On a Reel of 5000)
Units
33kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-0408
Mfr. Part No.RS73F1JTTD3903B
BrandKOA
£0.034
Each (On a Reel of 5000)
Units
390kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-1484
Mfr. Part No.RS73F1JTTD3300B
BrandKOA
£0.049
Each (On a Reel of 500)
Units
330Ω 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-0378
Mfr. Part No.RS73F1JTTD2201B
BrandKOA
£0.034
Each (On a Reel of 5000)
Units
2.2kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-0395
Mfr. Part No.RS73F1JTTD3902B
BrandKOA
£0.034
Each (On a Reel of 5000)
Units
39kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-0413
Mfr. Part No.RS73F1JTTD1004B
BrandKOA
£0.034
Each (On a Reel of 5000)
Units
1MΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-0409
Mfr. Part No.RS73F1JTTD4703B
BrandKOA
£0.034
Each (On a Reel of 5000)
Units
470kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-1499
Mfr. Part No.RS73F1JTTD2702B
BrandKOA
£0.049
Each (On a Reel of 500)
Units
27kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-0379
Mfr. Part No.RS73F1JTTD2701B
BrandKOA
£0.034
Each (On a Reel of 5000)
Units
2.7kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-0396
Mfr. Part No.RS73F1JTTD4702B
BrandKOA
£0.034
Each (On a Reel of 5000)
Units
47kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-0387
Mfr. Part No.RS73F1JTTD1202B
BrandKOA
£0.034
Each (On a Reel of 5000)
Units
12kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-1479
Mfr. Part No.RS73F1JTTD6803B
BrandKOA
£0.049
Each (On a Reel of 500)
Units
680kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-0375
Mfr. Part No.RS73F1JTTD1201B
BrandKOA
£0.034
Each (On a Reel of 5000)
Units
1.2kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-0410
Mfr. Part No.RS73F1JTTD5603B
BrandKOA
£0.034
Each (On a Reel of 5000)
Units
560kΩ 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-1476
Mfr. Part No.RS73F1JTTD2700B
BrandKOA
£0.049
Each (On a Reel of 500)
Units
270Ω 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C
RS Stock No. 179-0371
Mfr. Part No.RS73F1JTTD6800B
BrandKOA
£0.034
Each (On a Reel of 5000)
Units
680Ω 0603 (1608M) Thick Film ±0.1% 0.2W ±25ppm/°C AEC-Q200 - - - - RS73 -55°C +155°C