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 172-2208
製造零件編號EBWB-MR0002FE
TWD36.60
個 (在毎卷:2000)
單位
200 µΩ - Manganin Alloy ±1% 7W ±100ppm/°C - - - - - EBW -55°C +170°C
RS庫存編號 124-9340
製造零件編號EBWB-MR0002FE
TWD85.80
個 (以毎袋:5)
單位
200 µΩ 0603 (1608M) Manganin Alloy ±1% 7W ±100ppm/°C - - - - - EBW -55°C +170°C
RS庫存編號 126-0361
製造零件編號FC4L32R050FER
TWD31.60
個 (以毎袋:10)
單位
50 mΩ 1206 (3216M) Metal Foil ±1% 1W ±50ppm/°C - - - - - FC4L -55°C +155°C
RS庫存編號 126-0369
製造零件編號FCSL05R010FER
TWD6.40
個 (以毎袋:5000)
單位
10 mΩ - Metal Foil ±1% 0.2W - - - - - - FCSL -55°C +155°C
RS庫存編號 126-0348
製造零件編號FC4L110R005FER
TWD97.00
個 (以毎袋:5)
單位
5 mΩ 4320 Metal Foil ±1% 5W ±50ppm/°C - - - - - FC4L -55°C +155°C
RS庫存編號 126-0349
製造零件編號FC4L110R010FER
TWD86.20
個 (以毎袋:5)
單位
10 mΩ 4320 Metal Foil ±1% 5W ±50ppm/°C - - - - - FC4L -55°C +155°C
RS庫存編號 172-2210
製造零件編號EBWB-NR0010FE
TWD36.60
個 (在毎卷:2000)
單位
1 mΩ - NiCr Alloy ±1% 6W ±120ppm/°C - - - - - EBW -55°C +170°C
RS庫存編號 136-4768
製造零件編號AS25J1R00ET
TWD6.70
Each (On a Tape of 100)
單位
1 Ω 2512 (6432M) Thick Film ±5% 1.5W ±400ppm/°C - - - - - AS25 -55°C +155°C
RS庫存編號 126-0370
製造零件編號FCSL05R020FER
TWD6.40
個 (以毎袋:5000)
單位
20 mΩ - Metal Foil ±1% 0.2W - - - - - - FCSL -55°C +155°C
全新
RS庫存編號 210-4672
製造零件編號TKH45P100RFE-TR
TWD82.80
Each (On a Tape of 5)
單位
100 Ω TO-252 Thick Film ±1% 45W - - - - - - - - -
RS庫存編號 126-0389
製造零件編號LVK24R010FER
TWD54.20
個 (以毎袋:5)
單位
10 mΩ 2412 - ±1% 1W ±50ppm/°C - - - - - LVK24 -40°C +125°C
全新
RS庫存編號 210-4711
製造零件編號TKH45PR050JE-TR
TWD84.80
Each (On a Tape of 5)
單位
50 mΩ TO-252 Thick Film ±1% 45W - - - - - - - - -
全新
RS庫存編號 210-4686
製造零件編號TKH45P20R0FE-TR
TWD78.60
Each (On a Tape of 5)
單位
20 Ω TO-252 Thick Film ±1% 45W - - - - - - - - -
RS庫存編號 136-4775
製造零件編號AS25J1001ET
TWD6.70
Each (On a Tape of 100)
單位
1 kΩ 2512 (6432M) Thick Film ±5% 1.5W ±100ppm/°C - - - - - AS25 -55°C +155°C
RS庫存編號 126-0399
製造零件編號MCS3264R005FER
TWD15.90
個 (以毎袋:20)
單位
5 mΩ 1225 (3264M) Metal Film ±1% 2W ±50ppm/°C - - - - - MCS -25°C +125°C
RS庫存編號 126-0379
製造零件編號LVK12R010FER
TWD28.40
個 (以毎袋:5)
單位
10 mΩ 0402 (1005M) - ±1% 0.5W ±50ppm/°C - - - - - LVK12 -40°C +125°C
全新
RS庫存編號 210-4684
製造零件編號TKH45P200RFE-TR
TWD80.80
Each (On a Tape of 5)
單位
200 Ω TO-252 Thick Film ±1% 45W - - - - - - - - -
全新
RS庫存編號 210-4713
製造零件編號TKH45PR100JE-TR
TWD78.60
Each (On a Tape of 5)
單位
100 mΩ TO-252 Thick Film ±1% 45W - - - - - - - - -
全新
RS庫存編號 210-4683
製造零件編號TKH45P200RFE-TR
TWD38.20
個 (在毎卷:500)
單位
200 Ω TO-252 Thick Film ±1% 45W - - - - - - - - -
全新
RS庫存編號 210-4710
製造零件編號TKH45PR050JE-TR
TWD39.30
個 (在毎卷:500)
單位
50 mΩ TO-252 Thick Film ±1% 45W - - - - - - - - -