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. 391-5321
Mfr. Part No.RR0816P-103-D
BrandSusumu Co
$0.053
Each (In a Pack of 100)
units
10 kΩ 0603 (1608M) Thin Film ±0.5% 0.063W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 391-5630
Mfr. Part No.RR1220P-103-D
BrandSusumu Co
$0.097
Each (In a Pack of 100)
units
10 kΩ 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 160-698
Mfr. Part No.RG1608N-102-W-T1
BrandSusumu Co
$1.203
Each (In a Pack of 20)
units
1 kΩ 0603 (1608M) Thin Film ±0.05% 0.1W ±10ppm/°C - - - - - - -55°C +155°C
RS Stock No. 474-4704
Mfr. Part No.RR0816P-163-D
BrandSusumu Co
$0.051
Each (In a Pack of 100)
units
16 kΩ 0603 (1608M) Thin Film ±0.5% 0.063W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 638-1024
Mfr. Part No.RG2012P-105-B-T1
BrandSusumu Co
$0.592
Each (In a Pack of 50)
units
1 MΩ 0805 (2012M) Metal Film ±0.1% 0.125W ±25ppm/°C - - - - - - -55°C +155°C
RS Stock No. 161-887
Mfr. Part No.RG2012N-153-W-T1
BrandSusumu Co
$1.156
Each (In a Pack of 20)
units
15 kΩ 0805 (2012M) Thin Film ±0.05% 0.125W ±10ppm/°C - - - - - - -55°C +155°C
RS Stock No. 391-5567
Mfr. Part No.RR1220P-102-D
BrandSusumu Co
$0.097
Each (In a Pack of 100)
units
1 kΩ 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 160-935
Mfr. Part No.RG1608N-103-W-T1
BrandSusumu Co
$1.086
Each (In a Pack of 20)
units
10 kΩ 0603 (1608M) Thin Film ±0.05% 0.1W ±10ppm/°C - - - - - - -55°C +155°C
RS Stock No. 391-5501
Mfr. Part No.RR1220P-101-D
BrandSusumu Co
$0.097
Each (In a Pack of 100)
units
100 Ω 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 161-382
Mfr. Part No.RG2012N-121-W-T1
BrandSusumu Co
$1.251
Each (In a Pack of 20)
units
120 Ω 0805 (2012M) Thin Film ±0.05% 0.125W ±10ppm/°C - - - - - - -55°C +155°C
RS Stock No. 391-5523
Mfr. Part No.RR1220P-221-D
BrandSusumu Co
$0.049
Each (In a Pack of 100)
units
220 Ω 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 161-916
Mfr. Part No.RG2012N-203-W-T1
BrandSusumu Co
$1.05
Each (In a Pack of 20)
units
20 kΩ 0805 (2012M) Thin Film ±0.05% 0.125W ±10ppm/°C - - - - - - -55°C +155°C
RS Stock No. 520-3361
Mfr. Part No.RG1608P-101-B
BrandSusumu Co
$0.348
Each (In a Pack of 50)
units
100 Ω 0603 (1608M) Thin Film ±0.1% 0.1W ±25ppm/°C - - - - - RG -55°C +155°C
RS Stock No. 474-4681
Mfr. Part No.RR0816P-123-D
BrandSusumu Co
$0.049
Each (In a Pack of 100)
units
12 kΩ 0603 (1608M) Thin Film ±0.5% 0.063W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 520-4011
Mfr. Part No.RG1608P-303-B
BrandSusumu Co
$0.348
Each (In a Pack of 50)
units
30 kΩ 0603 (1608M) Thin Film ±0.1% 0.1W ±25ppm/°C - - - - - RG -55°C +155°C
RS Stock No. 601-9684
Mfr. Part No.RR1220P-562-D
BrandSusumu Co
$0.097
Each (In a Pack of 100)
units
5.6 kΩ 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 391-5618
Mfr. Part No.RR1220P-472-D
BrandSusumu Co
$0.097
Each (In a Pack of 100)
units
4.7 kΩ 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 602-0022
Mfr. Part No.RR1220Q-750-D
BrandSusumu Co
$0.049
Each (In a Pack of 100)
units
75 Ω 0805 (2012M) Thin Film ±0.5% 0.1W ±50ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 601-9375
Mfr. Part No.RR1220P-203-D
BrandSusumu Co
$0.097
Each (In a Pack of 100)
units
20 kΩ 0805 (2012M) Thin Film ±0.5% 0.1W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 474-4417
Mfr. Part No.RR0816P-561-D
BrandSusumu Co
$0.049
Each (In a Pack of 100)
units
560 Ω 0603 (1608M) Thin Film ±0.5% 0.063W ±25ppm/°C - - - - - RR -55°C +125°C