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. 701-4924
Mfr. Part No.CPF0402B1K0E1
MYR1.628
Each (In a Pack of 10)
units
1 kΩ 0402 (1005M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - CPF -55°C +155°C
RS Stock No. 120-482
Mfr. Part No.RMC1/16K221FTP
BrandKamaya
MYR0.061
Each (In a Pack of 100)
units
220 Ω 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - RMC -55°C +155°C
RS Stock No. 169-1200
Mfr. Part No.ERA6AEB911V
BrandPanasonic
MYR1,337.71
1 Reel of 5000
Reel(s)
910 Ω 0805 (2012M) Thin Film ±0.1% 0.125W ±25ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 740-9117
Mfr. Part No.CR1206-JW-102GLF
BrandBourns
MYR0.111
Each (In a Pack of 50)
units
1 kΩ 1206 (3216M) Thick Film ±5% 0.25W ±200ppm/°C - - - - - CR1206 -55°C +155°C
RS Stock No. 389-817
Mfr. Part No.RCU-0C
MYR0.848
Each (In a Pack of 25)
units
0 Ω 0603 (1608M) Thick Film ±0% - - - - - - - RC -55°C +125°C
RS Stock No. 117-896
Mfr. Part No.RMC1/10K821FTP
BrandKamaya
MYR0.074
Each (In a Pack of 100)
units
820 Ω 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - RMC -55°C +155°C
RS Stock No. 740-8975
Mfr. Part No.CR0805-FX-1002GLF
BrandBourns
MYR0.059
Each (In a Pack of 50)
units
10 kΩ 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - CR0805 -55°C +155°C
RS Stock No. 118-489
Mfr. Part No.RMC1/8-7R5FTP
BrandKamaya
MYR0.129
Each (In a Pack of 100)
units
7.5 Ω 1206 (3216M) Thick Film ±1% 0.25W -200 → +500ppm/°C - - - - - RMC -55°C +155°C
RS Stock No. 810-1748
Mfr. Part No.ERJ6RBD2002V
BrandPanasonic
MYR0.167
Each (In a Bag of 100)
units
20 kΩ 0805 (2012M) Thick Film ±0.5% 0.1W ±50ppm/°C AEC-Q200 - - - - ERJ -55°C +125°C
RS Stock No. 162-0005
Mfr. Part No.CPF0603B33KE
MYR543.77
1 Reel of 1000
Reel(s)
33 kΩ 0603 (1608M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - CPF -55°C +125°C
RS Stock No. 354-4014
Mfr. Part No.SMV100M OHMD
BrandPCN
MYR39.54
Each
units
100 mΩ - Metal Film ±0.5% 3W ±30ppm/°C - - - - - SMV -55°C +125°C
RS Stock No. 172-3949
Mfr. Part No.ERJU06F62R0V
BrandPanasonic
MYR0.105
Each (On a Reel of 5000)
units
62 Ω 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - ERJ -55°C +155°C
RS Stock No. 121-277
Mfr. Part No.RMC1/16SK472FTH
BrandKamaya
MYR0.146
Each (In a Pack of 100)
units
4.7 kΩ 0402 (1005M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - RMC -55°C +155°C
RS Stock No. 134-5506
Mfr. Part No.CRG1206F120R
MYR169.54
1 Reel of 5000
Reel(s)
120 Ω 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - CRG -55°C +125°C
RS Stock No. 732-6172
Mfr. Part No.ERJ6ENF2001V
BrandPanasonic
MYR237.97
1 Reel of 5000
Reel(s)
2 kΩ 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - ERJ6EN -55°C +155°C
RS Stock No. 105-1155
Mfr. Part No.ERJ3EKF1001V
BrandPanasonic
MYR0.048
Each (On a Reel of 5000)
units
1 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C AEC-Q200 - - - - ERJ3EK -55°C +155°C
RS Stock No. 865-4532
Mfr. Part No.ERJU06F62R0V
BrandPanasonic
MYR0.202
Each (In a Bag of 100)
units
62 Ω 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - ERJ -55°C +155°C
RS Stock No. 740-8795
Mfr. Part No.CR0603-FX-1001HLF
BrandBourns
MYR0.131
Each (In a Pack of 50)
units
1 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CR0603 -55°C +155°C
RS Stock No. 732-6129
Mfr. Part No.ERJ6ENF1502V
BrandPanasonic
MYR305.04
1 Reel of 5000
Reel(s)
15 kΩ 0805 (2012M) Thick Film ±1% 0.125W ±100ppm/°C - - - - - ERJ6EN -55°C +155°C
RS Stock No. 223-2136
Mfr. Part No.CRG1206F120R
MYR0.257
Each (In a Pack of 50)
units
120 Ω 1206 Thick Film ±1% 0.25W ±100ppm/°C - 3.2 x 0.6mm 3.2mm 1.55mm 0.6mm CRG -55°C +125°C
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