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
New
RS Stock No. 197-8219
Mfr. Part No.AC0805JR-0710RL
BrandYageo
MYR0.081
Each (On a Tape of 500)
units
- 0805 Thick Film 5% 0.125W - - - - - - - - -
New
RS Stock No. 197-8247
Mfr. Part No.AC1206FR-07100RL
BrandYageo
MYR0.167
Each (On a Tape of 100)
units
- 1206 (3216M) Thick Film 1% 0.25W - - - - - - - - -
RS Stock No. 164-1770
Mfr. Part No.TL3AR033F
MYR2.601
Each (On a Reel of 2000)
units
33 mΩ 2512 (6432M) Metal Foil ±1% 1W ±75ppm/°C - - - - - TLA3A -65°C +170°C
RS Stock No. 391-5214
Mfr. Part No.RR0816P-151-D
BrandSusumu Co
MYR0.143
Each (In a Pack of 100)
units
150 Ω 0603 (1608M) Thin Film ±0.5% 0.063W ±25ppm/°C - - - - - RR -55°C +125°C
RS Stock No. 164-6497
Mfr. Part No.TLM3AER018JTE
MYR1.153
Each (On a Reel of 4000)
units
18 mΩ 2512 (6432M) Metal Foil ±5% 1W ±100ppm/°C - - - - - TLM -55°C ++55°°C
RS Stock No. 169-1374
Mfr. Part No.ERA3APB1071V
BrandPanasonic
MYR1.44
Each (On a Reel of 5000)
units
1.07 kΩ 0603 (1608M) Metal Film ±0.1% 0.1W ±15ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 179-7115
Mfr. Part No.ERJ1GNJ332C
BrandPanasonic
MYR0.039
Each (On a Reel of 15000)
units
3.3 kΩ 0201 (0603M) Thick Film ±5% 0.05W ±200ppm/°C AEC-Q200 - - - - ERJ1G -55°C +125°C
RS Stock No. 106-2955
Mfr. Part No.ERJP06F3601V
BrandPanasonic
MYR0.205
Each (In a Bag of 100)
units
3.6 kΩ 0805 (2012M) Thick Film ±1% 0.5W ±100ppm/°C AEC-Q200 - - - - ERJP06 -55°C +155°C
RS Stock No. 169-0889
Mfr. Part No.ERJ6RBD1003V
BrandPanasonic
MYR0.085
Each (On a Reel of 5000)
units
100 kΩ 0805 (2012M) Thick Film ±0.5% 0.1W ±50ppm/°C AEC-Q200 - - - - ERJ -55°C +125°C
RS Stock No. 169-1193
Mfr. Part No.ERA2AEB203X
BrandPanasonic
MYR0.221
Each (On a Reel of 10000)
units
20 kΩ 0402 (1005M) Thin Film ±0.1% 0.063W ±25ppm/°C AEC-Q200 - - - - ERA -55°C +155°C
RS Stock No. 180-3284
Mfr. Part No.MMU01020C2401FB300
BrandVishay
MYR0.209
Each (On a Reel of 3000)
units
2.4 kΩ Melf 0102 Thin Film ±1% 0.2W ±50ppm/K AEC-Q200 - - - - MMU -55°C +125°C
RS Stock No. 666-1897
Mfr. Part No.CPF0603B15RE
MYR1.40
Each (In a Pack of 5)
units
15 Ω 0603 (1608M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - CPF -55°C +125°C
RS Stock No. 164-6276
Mfr. Part No.352268KFT
MYR1.244
Each (On a Reel of 2000)
units
68 kΩ 2512 (6432M) Thick Film ±1% 3W - - - - - - 3522 -55°C +155°C
RS Stock No. 763-3691
Mfr. Part No.ERJP03F2491V
BrandPanasonic
MYR0.401
Each (On a Reel of 500)
units
2.49 kΩ 0603 (1608M) Thick Film ±1% 0.2W ±200ppm/°C AEC-Q200 - - - - ERJP03 -55°C +155°C
RS Stock No. 819-9925
Mfr. Part No.PWR163S-25-12R0J
BrandBourns
MYR10.39
Each
units
12 Ω DPAK Thick Film ±5% 25W ±100ppm/°C AEC-Q200 - - - - PWR163 -55°C +155°C
New
RS Stock No. 199-1276
Mfr. Part No.RT0402BRD07110RL
BrandYageo
MYR0.222
Each (On a Reel of 10000)
units
110 Ω 0402 (1005M) Thin Film ±0.1% 0.0625W - - - - - - - - -
RS Stock No. 763-2815
Mfr. Part No.RP73PF1J7K15BTDF
MYR0.617
Each (On a Reel of 1000)
units
7.15 kΩ 0603 (1608M) Thin Film ±0.1% 0.16W ±25ppm/°C - - - - - RP73 -55°C +155°C
RS Stock No. 178-6279
Mfr. Part No.TLRZ1JTTD
BrandKOA
MYR0.526
Each (On a Reel of 5000)
units
200 µΩ 0603 (1608M) Metal Strip - - ±100ppm/°C AEC-Q200 - - - - TLRZ -55°C +170°C
New
RS Stock No. 198-5588
Mfr. Part No.RT0805BRD0710KL
BrandYageo
MYR1.701
Each (On a Tape of 10)
units
- 0805 (2012M) Thin Film ± 0.1% 0.125W - - - - - - - - -
RS Stock No. 172-2101
Mfr. Part No.ACPP06034K7BE
BrandArcol
MYR0.569
Each (On a Reel of 5000)
units
4.7 kΩ 0603 (1608M) Thin Film ±0.1% 0.063W ±25ppm/°C - - - - - ACPP -55°C +125°C