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. 901-3553
Mfr. Part No.MCR03EZPFX1001
BrandROHM
TWD1.70
Each (In a Bag of 100)
units
1 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3793
Mfr. Part No.MCR25JZHF3001
BrandROHM
TWD3.60
Each (In a Bag of 50)
units
3 kΩ 1210 (3225M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3601
Mfr. Part No.MCR03EZPFX1002
BrandROHM
TWD1.70
Each (In a Bag of 100)
units
10 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3730
Mfr. Part No.MCR18EZPF4701
BrandROHM
TWD1.90
Each (In a Bag of 100)
units
4.7 kΩ 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3667
Mfr. Part No.MCR03EZPFX1004
BrandROHM
TWD1.90
Each (In a Bag of 100)
units
1 MΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3689
Mfr. Part No.MCR10EZPF1000
BrandROHM
TWD0.60
Each (In a Bag of 100)
units
100 Ω 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3610
Mfr. Part No.MCR03EZPFX2002
BrandROHM
TWD1.90
Each (In a Bag of 100)
units
20 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3333
Mfr. Part No.MCR006YZPF1000
BrandROHM
TWD1.20
Each (In a Bag of 200)
units
100 Ω 0201 (0603M) Thick Film ±1% 0.05W ±250ppm/°C - - - - - MCR -55°C +125°C
RS Stock No. 901-3724
Mfr. Part No.MCR18EZPF1001
BrandROHM
TWD2.40
Each (In a Bag of 100)
units
1 kΩ 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3563
Mfr. Part No.MCR03EZPFX2001
BrandROHM
TWD1.90
Each (In a Bag of 100)
units
2 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3507
Mfr. Part No.MCR03EZPJ000
BrandROHM
TWD1.90
Each (In a Bag of 100)
units
0 Ω 0603 (1608M) Thick Film ±5% 0.1W - - - - - - MCR -55°C +155°C
RS Stock No. 901-3614
Mfr. Part No.MCR03EZPFX2202
BrandROHM
TWD0.40
Each (In a Bag of 100)
units
22 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3525
Mfr. Part No.MCR03EZPFX1000
BrandROHM
TWD1.90
Each (In a Bag of 100)
units
100 Ω 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3682
Mfr. Part No.MCR10EZPF1001
BrandROHM
TWD0.60
Each (In a Bag of 100)
units
1 kΩ 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3664
Mfr. Part No.MCR10EZPJ000
BrandROHM
TWD0.50
Each (In a Bag of 100)
units
0 Ω 0805 (2012M) Thick Film ±5% 0.125W - - - - - - MCR -55°C +155°C
RS Stock No. 901-3705
Mfr. Part No.MCR10EZPF1003
BrandROHM
TWD0.60
Each (In a Bag of 100)
units
100 kΩ 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3620
Mfr. Part No.MCR03EZPFX4702
BrandROHM
TWD1.90
Each (In a Bag of 100)
units
47 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3617
Mfr. Part No.MCR03EZPFX1802
BrandROHM
TWD1.90
Each (In a Bag of 100)
units
18 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3715
Mfr. Part No.MCR18EZPF1000
BrandROHM
TWD2.40
Each (In a Bag of 100)
units
100 Ω 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - MCR -55°C +155°C
RS Stock No. 901-3692
Mfr. Part No.MCR10EZPF1002
BrandROHM
TWD0.80
Each (In a Bag of 100)
units
10 kΩ 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - MCR -55°C +155°C