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 (PCBs).

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. 106-5958
Mfr. Part No.ERJ3EKF4701V
BrandPanasonic
kr 0,05
Each (On a Reel of 5000)
Units
4.7 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C AEC-Q200 - - - - ERJ3EK -55°C +155°C
RS Stock No. 618-2316
Mfr. Part No.RC1206FR-0710ML
BrandYageo
kr 488,53
1 Pack of 5000
Pack(s)
10 MΩ 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - RC1206 -55°C +155°C
RS Stock No. 122-9042
Mfr. Part No.CPF0603B191RE1
kr 3,435
Each (In a Bag of 20)
Units
191 Ω 0603 (1608M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - CPF -55°C +155°C
RS Stock No. 167-0040
Mfr. Part No.PWR220T-35-10R0J
BrandBourns
kr 21,984
Each (In a Tube of 50)
Units
10 Ω TO-220 Metal Film ±5% 35W ±100ppm/°C AEC-Q200 - - - - PWR220T-35 -55°C +155°C
RS Stock No. 820-6776
Mfr. Part No.CRCW06031K00FKEAHP
BrandVishay
kr 1,731
Each (In a Bag of 25)
Units
1 kΩ 0603 (1608M) Thick Film ±1% 0.25W ±100ppm/K - - - - - CRCW -55°C +155°C
RS Stock No. 755-1287
Mfr. Part No.35212K2FT
kr 5,623
Each (In a Pack of 10)
Units
2.2 kΩ 2512 (6432M) Thick Film ±1% 2W ±100ppm/°C - - - - - 3521 -55°C +155°C
RS Stock No. 618-5179
Mfr. Part No.RC0805FR-0710RL
BrandYageo
kr 488,53
1 Pack of 5000
Pack(s)
10 Ω 0805 (2012M) Thick Film ±1% 0.125W ±200ppm/°C - - - - - RC0805 -55°C +155°C
RS Stock No. 134-5428
Mfr. Part No.CRG0603ZR
kr 0,022
Each (On a Reel of 5000)
Units
0 Ω 0603 (1608M) Thick Film ±0% 0.1W ±100ppm/°C - - - - - CRG -55°C +125°C
RS Stock No. 679-0419
Mfr. Part No.CRCW0603470RFKEA
BrandVishay
kr 0,423
Each (In a Pack of 50)
Units
470 Ω 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 169-4217
Mfr. Part No.CRCW06030000Z0EB
BrandVishay
kr 0,095
Each (On a Reel of 10000)
Units
0 Ω 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 181-9301
Mfr. Part No.CRCW04022M20FKED
BrandVishay
kr 0,087
Each (On a Reel of 1000)
Units
2.2 mΩ 0402 (1005M) Thick Film ±1% - - - - - - - CRCW -55°C +155°C
RS Stock No. 763-0526
Mfr. Part No.RP73PF1J200RBTDF
kr 1,315
Each (On a Reel of 1000)
Units
200 Ω 0603 (1608M) Thin Film ±0.1% 0.16W ±25ppm/°C - - - - - RP73 -55°C +155°C
RS Stock No. 679-2106
Mfr. Part No.CRCW12063K30FKEA
BrandVishay
kr 0,219
Each (In a Pack of 50)
Units
3.3 kΩ 1206 (3216M) Thick Film ±1% 0.25W ±100ppm/°C - - - - - CRCW -55°C +155°C
RS Stock No. 180-3754
Mfr. Part No.MMU01020C4709FB300
BrandVishay
kr 0,707
Each (On a Reel of 500)
Units
47 Ω Melf 0102 Thin Film ±1% 0.2W ±50ppm/K AEC-Q200 - - - - MMU -55°C +125°C
RS Stock No. 181-7860
Mfr. Part No.CRCW0603330RFKEAHP
BrandVishay
kr 0,227
Each (On a Reel of 1000)
Units
- - - - - - - - - - - - - -
RS Stock No. 830-6719
Mfr. Part No.WSL0603R0100FEA
BrandVishay
kr 9,17
Each
Units
10 mΩ 0603 (1608M) Metal Strip ±1% 0.1W ±75ppm/°C - - - - - WSL -65°C +170°C
RS Stock No. 873-9226
Mfr. Part No.ERJU03F1002V
BrandPanasonic
kr 0,297
Each (In a Bag of 100)
Units
10 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C - - - - - ERJU03 -55°C +155°C
RS Stock No. 814-5889
Mfr. Part No.ERJ-3EKF1001V
BrandPanasonic
kr 0,043
Each (In a Bag of 100)
Units
1 kΩ 0603 (1608M) Thick Film ±1% 0.1W ±100ppm/°C AEC-Q200 - - - - ERJ3EK -55°C +155°C
RS Stock No. 181-8055
Mfr. Part No.CRCW0603300KFKEA
BrandVishay
kr 0,106
Each (On a Reel of 1000)
Units
- - - - - - - - - - - - - -
RS Stock No. 708-7565
Mfr. Part No.ERA3AEB2801V
BrandPanasonic
kr 0,248
Each (In a Pack of 5)
Units
2.8 kΩ 0603 (1608M) Metal Film ±0.1% 0.1W ±25ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
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