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庫存編號 490-4681
製造零件編號SMT 10M OHMF
BrandPCN
HK$50.26
單位
10 mΩ - Metal Foil ±1% 3W ±50ppm/°C - - - - - - -55°C +170°C
RS庫存編號 490-4669
製造零件編號SMT 5M OHMF
BrandPCN
HK$50.26
單位
5 mΩ - Metal Foil ±1% 3W ±50ppm/°C - - - - - - -55°C +170°C
RS庫存編號 490-4603
製造零件編號BVS-M 0.5M OHMF
BrandPCN
HK$66.20
單位
500 µΩ - Metal Strip ±1% 5W ±70ppm/°C - - - - - BVS -55°C +170°C
RS庫存編號 354-4014
製造零件編號SMV100M OHMD
BrandPCN
HK$73.52
單位
100 mΩ - Metal Film ±0.5% 3W ±30ppm/°C - - - - - SMV -55°C +125°C
RS庫存編號 490-4776
製造零件編號SMT 220M OHMF
BrandPCN
HK$50.26
單位
220 mΩ - Metal Foil ±1% 3W ±50ppm/°C - - - - - - -55°C +170°C
RS庫存編號 490-4580
製造零件編號BVS-Z 0.2M OHMF
BrandPCN
HK$66.20
單位
200 µΩ - Metal Strip ±1% 5W ±200ppm/°C - - - - - BVS -55°C +170°C
RS庫存編號 490-4619
製造零件編號BVS-M 1M OHMF
BrandPCN
HK$66.20
單位
1 mΩ - Metal Strip ±1% 4W ±50ppm/°C - - - - - BVS -55°C +170°C
RS庫存編號 490-4782
製造零件編號SMT 330M OHMF
BrandPCN
HK$52.90
單位
330 mΩ - Metal Foil ±1% 3W ±50ppm/°C - - - - - - -55°C +170°C
RS庫存編號 490-4647
製造零件編號BVS-A 4M OHMF
BrandPCN
HK$66.20
單位
4 mΩ - Metal Strip ±1% 2.5W ±50ppm/°C - - - - - BVS -55°C +170°C
RS庫存編號 490-4760
製造零件編號SMT 150M OHMF
BrandPCN
HK$50.26
單位
150 mΩ - Metal Foil ±1% 3W ±50ppm/°C - - - - - - -55°C +170°C
RS庫存編號 490-4631
製造零件編號BVS-A 3M OHMF
BrandPCN
HK$66.20
單位
3 mΩ - Metal Strip ±1% 3W ±50ppm/°C - - - - - BVS -55°C +170°C
RS庫存編號 490-4748
製造零件編號SMT 100M OHMF
BrandPCN
HK$50.26
單位
100 mΩ - Metal Foil ±1% 3W ±50ppm/°C - - - - - - -55°C +170°C
RS庫存編號 490-4732
製造零件編號SMT 47M OHMF
BrandPCN
HK$52.90
單位
47 mΩ - Metal Foil ±1% 3W ±50ppm/°C - - - - - - -55°C +170°C
RS庫存編號 354-3982
製造零件編號SMV33M OHMD
BrandPCN
HK$73.52
單位
33 mΩ - Metal Film ±0.5% 3W ±30ppm/°C - - - - - SMV -55°C +125°C
RS庫存編號 354-3976
製造零件編號SMV22M OHMD
BrandPCN
HK$73.52
單位
22 mΩ - Metal Film ±0.5% 3W ±30ppm/°C - - - - - SMV -55°C +125°C
RS庫存編號 490-4726
製造零件編號SMT 33M OHMF
BrandPCN
HK$52.90
單位
33 mΩ - Metal Foil ±1% 3W ±50ppm/°C - - - - - - -55°C +170°C
RS庫存編號 354-3954
製造零件編號SMV10M OHMD
BrandPCN
HK$84.29
單位
10 mΩ - Metal Film ±0.5% 3W ±30ppm/°C - - - - - SMV -55°C +125°C