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. 741-9785
Mfr. Part No.ERA3AEB102V
BrandPanasonic
MYR0.153
Each (On a Reel of 5000)
units
1 kΩ 0603 (1608M) Thin Film ±0.1% 0.1W ±25ppm/°C - - - - - ERA -55°C +155°C
RS Stock No. 180-9728
Mfr. Part No.ERA3AEB102V
BrandPanasonic
MYR0.404
Each (On a Reel of 500)
units
- - - - - - - - - - - - - -
RS Stock No. 566-800
Mfr. Part No.ERA3AEB102V
BrandPanasonic
MYR1.06
Each (In a Pack of 5)
units
1 kΩ 0603 Thin Film ±0.1% 0.1W ±25ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 122-9395
Mfr. Part No.ERJ3EKF7500V
BrandPanasonic
MYR0.029
Each (On a Reel of 5000)
units
750 Ω 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - ERJ -55°C +155°C
RS Stock No. 169-1126
Mfr. Part No.ERA3AEB302V
BrandPanasonic
MYR0.151
Each (On a Reel of 5000)
units
3 kΩ 0603 (1608M) Thin Film ±0.1% 0.1W ±25ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 179-9589
Mfr. Part No.ERA3AEB302V
BrandPanasonic
MYR0.479
Each (On a Reel of 250)
units
3 kΩ 0603 (1608M) Thin Film ±0.1% 0.1W ±25ppm/°C AEC-Q200 - - - - E24 -55°C +155°C
RS Stock No. 828-0560
Mfr. Part No.ERA3AEB302V
BrandPanasonic
MYR1.31
Each (In a Bag of 5)
units
3 kΩ 0603 (1608M) Thin Film ±0.1% 0.1W ±25ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 721-9292
Mfr. Part No.ERJT14J33RU
BrandPanasonic
MYR0.64
Each (In a Pack of 5)
units
33 Ω 1210 (3225M) Thick Film ±5% 0.5W ±200ppm/°C AEC-Q200 - - - - ERJT14 -55°C +155°C
RS Stock No. 922-9216
Mfr. Part No.ERJT14J33RU
BrandPanasonic
MYR0.216
Each (On a Reel of 5000)
units
33 Ω 1210 (3225M) Thick Film ±5% 0.5W ±200ppm/°C - - - - - ERJT14 -55°C +155°C
RS Stock No. 732-6031
Mfr. Part No.ERJ6ENF1002V
BrandPanasonic
MYR0.052
Each (On a Reel of 5000)
units
10 kΩ 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - ERJ6EN -55°C +155°C
RS Stock No. 172-3923
Mfr. Part No.ERJU06F1601V
BrandPanasonic
MYR0.065
Each (On a Reel of 5000)
units
1.6 kΩ 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - ERJ -55°C +155°C
RS Stock No. 566-238
Mfr. Part No.ERA6AEB124V
BrandPanasonic
MYR1.234
Each (In a Pack of 5)
units
120 kΩ 0805 (2012M) Thin Film ±0.1% 0.125W ±25ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 862-6893
Mfr. Part No.ERJPA3F30R0V
BrandPanasonic
MYR0.225
Each (In a Bag of 100)
units
30 Ω 0603 (1608M) Thick Film ±1% 0.25W ±100ppm/°C AEC-Q200 - - - - ERJPA3 -55°C +155°C
RS Stock No. 168-9000
Mfr. Part No.ERA6AEB124V
BrandPanasonic
MYR0.151
Each (On a Reel of 5000)
units
120 kΩ 0805 (2012M) Metal Film ±0.1% 0.125W ±25ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 807-8039
Mfr. Part No.ERJ-12ZYJ102U
BrandPanasonic
MYR0.401
Each (In a Pack of 100)
units
1 kΩ 2010 (5025M) Thick Film ±5% 0.75W ±200ppm/°C AEC-Q200 - - - - ERJ -55°C +155°C
RS Stock No. 172-3463
Mfr. Part No.ERJPA3F30R0V
BrandPanasonic
MYR0.074
Each (On a Reel of 5000)
units
30 Ω 0603 (1608M) Thick Film ±1% 0.25W ±100ppm/°C AEC-Q200 - - - - ERJPA3 -55°C +155°C
RS Stock No. 865-4286
Mfr. Part No.ERJU06F1601V
BrandPanasonic
MYR0.219
Each (In a Bag of 100)
units
1.6 kΩ 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - ERJ -55°C +155°C
RS Stock No. 114-2851
Mfr. Part No.ERJ6ENF4990V
BrandPanasonic
MYR0.039
Each (On a Reel of 5000)
units
499 Ω 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - ERJ -55°C +155°C
RS Stock No. 763-4168
Mfr. Part No.ERJP08F49R9V
BrandPanasonic
MYR0.175
Each (On a Reel of 500)
units
49.9 Ω 1206 (3216M) Thick Film ±1% 0.66W ±100ppm/°C AEC-Q200 - - - - ERJP08 -55°C +155°C
RS Stock No. 169-1200
Mfr. Part No.ERA6AEB911V
BrandPanasonic
MYR0.154
Each (On a Reel of 5000)
units
910 Ω 0805 (2012M) Thin Film ±0.1% 0.125W ±25ppm/°C AEC-Q200 - - - - ERA -55°C +155°C