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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RS Stock No. 732-6728
Mfr. Part No.ERJ6GEYJ681V
BrandPanasonic
PHP0.309
Each (On a Reel of 5000)
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680 Ω 0805 (2012M) Thick Film ±5% 0.125W ±200ppm/°C - - - - - ERJ6GE -55°C +155°C
RS Stock No. 732-6514
Mfr. Part No.ERJ6GEY0R00V
BrandPanasonic
PHP0.773
Each (On a Reel of 5000)
units
0 Ω 0805 (2012M) Thick Film ±0% 0.125W - - - - - - ERJ6GE -55°C +155°C
RS Stock No. 520-7357
Mfr. Part No.ERJS08J221V
BrandPanasonic
PHP3.735
Each (In a Pack of 50)
units
220 Ω 1206 (3216M) Thick Film ±5% 0.25W ±200ppm/°C AEC-Q200 - - - - ERJ -55°C +155°C
RS Stock No. 732-5249
Mfr. Part No.ERJ2RKF1000X
BrandPanasonic
PHP0.206
Each (On a Reel of 10000)
units
100 Ω 0402 (1005M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - ERJ2RK -55°C +155°C
RS Stock No. 810-2220
Mfr. Part No.ERJ3RBD3300V
BrandPanasonic
PHP1.958
Each (In a Bag of 100)
units
330 Ω 0603 (1608M) Thick Film ±0.5% 0.1W ±50ppm/°C AEC-Q200 - - - - ERJ -55°C +125°C
RS Stock No. 169-1030
Mfr. Part No.ERJ3RBD3300V
BrandPanasonic
PHP0.893
Each (On a Reel of 5000)
units
330 Ω 0603 (1608M) Thick Film ±0.5% 0.1W ±50ppm/°C AEC-Q200 - - - - ERJ -55°C +125°C
RS Stock No. 520-7414
Mfr. Part No.ERJS08J361V
BrandPanasonic
PHP4.99
Each (In a Pack of 50)
units
360 Ω 1206 (3216M) Thick Film ±5% 0.25W ±200ppm/°C AEC-Q200 - - - - ERJ -55°C +155°C
RS Stock No. 169-0992
Mfr. Part No.ERJ6RED9103V
BrandPanasonic
PHP1.05
Each (On a Reel of 5000)
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910 kΩ 0805 (2012M) Thick Film ±0.5% 0.1W ±100ppm/°C AEC-Q200 - - - - ERJ -55°C +125°C
RS Stock No. 810-2084
Mfr. Part No.ERJ6RED9103V
BrandPanasonic
PHP2.26
Each (In a Bag of 100)
units
910 kΩ 0805 (2012M) Thick Film ±0.5% 0.1W ±100ppm/°C AEC-Q200 - - - - ERJ -55°C +125°C
RS Stock No. 169-0905
Mfr. Part No.ERJ6RBD2200V
BrandPanasonic
PHP1.03
Each (On a Reel of 5000)
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220 Ω 0805 (2012M) Thick Film ±0.5% 0.1W ±50ppm/°C AEC-Q200 - - - - ERJ -55°C +125°C
RS Stock No. 810-1757
Mfr. Part No.ERJ6RBD2200V
BrandPanasonic
PHP2.305
Each (In a Bag of 100)
units
220 Ω 0805 (2012M) Thick Film ±0.5% 0.1W ±50ppm/°C AEC-Q200 - - - - ERJ -55°C +125°C
RS Stock No. 172-3479
Mfr. Part No.ERJPA3F75R0V
BrandPanasonic
PHP0.945
Each (On a Reel of 5000)
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75 Ω 0603 (1608M) Thick Film ±1% 0.25W ±100ppm/°C AEC-Q200 - - - - ERJPA3 -55°C +155°C
RS Stock No. 721-9258
Mfr. Part No.ERJT14J100U
BrandPanasonic
PHP6.692
Each (In a Pack of 5)
units
10 Ω 1210 (3225M) Thick Film ±5% 0.5W ±200ppm/°C AEC-Q200 - - - - ERJT14 -55°C +155°C
RS Stock No. 122-3716
Mfr. Part No.ERJP03F7682V
BrandPanasonic
PHP1.803
Each (On a Reel of 5000)
units
76.8 kΩ 0603 (1608M) Thick Film ±1% 0.2W ±200ppm/°C - - - - - ERJP03 -55°C +155°C
RS Stock No. 106-2935
Mfr. Part No.ERJP03F7682V
BrandPanasonic
PHP5.15
Each (In a Bag of 100)
units
76.8 kΩ 0603 (1608M) Thick Film ±1% 0.2W ±200ppm/°C AEC-Q200 - - - - ERJP03 -55°C +155°C
RS Stock No. 922-9200
Mfr. Part No.ERJT14J10RU
BrandPanasonic
PHP2.205
Each (On a Reel of 5000)
units
10 Ω 0603 (1608M) Thick Film ±5% 0.5W ±200ppm/°C - - - - - ERJT14 -55°C +155°C
RS Stock No. 862-7066
Mfr. Part No.ERJPA3F75R0V
BrandPanasonic
PHP2.836
Each (In a Bag of 100)
units
75 Ω 0603 (1608M) Thick Film ±1% 0.25W ±100ppm/°C AEC-Q200 - - - - ERJPA3 -55°C +155°C
RS Stock No. 922-9382
Mfr. Part No.ERJP08F2001V
BrandPanasonic
PHP1.397
Each (On a Reel of 5000)
units
2 kΩ 1206 (3216M) Thick Film ±1% 0.66W ±100ppm/°C - - - - - ERJP08 -55°C +155°C
RS Stock No. 923-0070
Mfr. Part No.ERJ3RQFR47V
BrandPanasonic
PHP1.018
Each (On a Reel of 5000)
units
470 mΩ 0603 (1608M) Thick Film ±1% 0.1W ±300ppm/°C - - - - - ERJ3R -55°C +125°C
RS Stock No. 172-3460
Mfr. Part No.ERJPA3F2401V
BrandPanasonic
PHP0.964
Each (On a Reel of 5000)
units
2.4 kΩ 0603 (1608M) Thick Film ±1% 0.25W ±100ppm/°C AEC-Q200 - - - - ERJPA3 -55°C +155°C