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
New
RS Stock No. 193-0013
Mfr. Part No.BVB-I-R002
TWD35.60
Each (On a Reel of 1400)
units
2 mΩ 2725 - - 5 W @ 100°C 20ppm/K AEC-Q200 - - - - BVB -65°C +170°C
New
RS Stock No. 193-0014
Mfr. Part No.BVB-I-R002
TWD75.40
Each (On a Tape of 5)
units
2 mΩ 2725 - - 5 W @ 100°C 20ppm/K AEC-Q200 - - - - BVB -65°C +170°C
New
RS Stock No. 192-9972
Mfr. Part No.VMK-R015-1.0-U
TWD26.70
Each (On a Tape of 10)
units
15 mΩ 1206 (3216M) - ±1% 1.5W <20ppm/K AEC-Q200 - - - - VMK -65°C +170°C
New
RS Stock No. 193-0005
Mfr. Part No.BVB-Z-R0005-1.0
TWD29.80
Each (On a Reel of 1400)
units
500 µΩ 2725 - 1% 5 W @ 100°C 20ppm/K AEC-Q200 - - - - BVB -65°C +170°C
New
RS Stock No. 192-9942
Mfr. Part No.SMK-R010-1.0
TWD15.60
Each (On a Reel of 12500)
units
10 mΩ 1206 (3216M) - 1% 1W <100ppm/K AEC-Q200 - - - - SMK -65°C +170°C
New
RS Stock No. 192-9797
Mfr. Part No.CMK-R020-1.0
TWD18.30
Each (On a Tape of 10)
units
20 mΩ 1206 (3216M) - ±1% 0.5 W @ 130°C, 1 W @ 70°C <50ppm/K AEC-Q200 - - - - - -65°C +170°C
New
RS Stock No. 193-0159
Mfr. Part No.VMS-R068-1.0-U
TWD13.10
Each (On a Reel of 9000)
units
68 mΩ 2512 (6432M) - 1% 3 W @ 95°C <20ppm/K AEC-Q200 - - - - VMS -65°C +170°C
New
RS Stock No. 192-9932
Mfr. Part No.SMK-R170-1.0
TWD15.60
Each (On a Reel of 12500)
units
170 mΩ 1206 (3216M) - 1% 1W <50ppm/K AEC-Q200 - - - - SMK -65°C +170°C
New
RS Stock No. 192-9999
Mfr. Part No.VMK-R130-1.0-U
TWD26.70
Each (On a Tape of 10)
units
130 mΩ 1206 (3216M) - ±1% 1.5W <20ppm/K AEC-Q200 - - - - VMK -65°C +170°C
New
RS Stock No. 193-0092
Mfr. Part No.SMS-R075-1.0
TWD19.60
Each (On a Reel of 5000)
units
75 mΩ 2512 (6432M) - 1% 3 W @ 110°C <50ppm/K AEC-Q200 - - - - SMS -65°C +170°C
New
RS Stock No. 193-0001
Mfr. Part No.VMK-R062-1.0-U
TWD26.70
Each (On a Tape of 10)
units
62 mΩ 1206 (3216M) - ±1% 1.5W <20ppm/K AEC-Q200 - - - - VMK -65°C +170°C
New
RS Stock No. 192-9947
Mfr. Part No.SMK-R220-1.0
TWD15.60
Each (On a Reel of 12500)
units
220 mΩ 1206 (3216M) - 1% 1W <50ppm/K AEC-Q200 - - - - SMK -65°C +170°C
New
RS Stock No. 193-0131
Mfr. Part No.VMS-R025-1.0-U
TWD30.60
Each (On a Tape of 10)
units
25 mΩ 2512 (6432M) - 1% 3 W @ 95°C <20ppm/K AEC-Q200 - - - - VMS -65°C +170°C
New
RS Stock No. 193-0113
Mfr. Part No.CMS-R033-1.0
TWD10.50
Each (On a Reel of 9000)
units
33 mΩ 2512 (6432M) - 1% 2.5 W @ 70°C <50ppm/K AEC-Q200 - - - - CMS -65°C +170°C
New
RS Stock No. 193-0011
Mfr. Part No.BVB-M-R001-1.0
TWD27.70
Each (On a Reel of 1400)
units
1 mΩ 2725 - 1% 5 W @ 100°C 20ppm/K AEC-Q200 - - - - BVB -65°C +170°C
New
RS Stock No. 193-0006
Mfr. Part No.BVB-Z-R0005-1.0
TWD65.20
Each (On a Tape of 5)
units
500 µΩ 2725 - 1% 5 W @ 100°C 20ppm/K AEC-Q200 - - - - BVB -65°C +170°C
New
RS Stock No. 192-9938
Mfr. Part No.SMK-R500-1.0
TWD15.60
Each (On a Reel of 12500)
units
500 mΩ 1206 (3216M) - 1% 1W <50ppm/K AEC-Q200 - - - - SMK -65°C +170°C
New
RS Stock No. 192-9973
Mfr. Part No.VMK-R012-1.0-U
TWD10.90
Each (On a Reel of 12500)
units
12 mΩ 1206 (3216M) - ±1% 1.5W <20ppm/K AEC-Q200 - - - - VMK -65°C +170°C
New
RS Stock No. 193-0109
Mfr. Part No.BVN-V-R003-1.0
TWD52.00
Each (On a Tape of 5)
units
3 mΩ 1216 - 1% 10 W @ 70°C <50ppm/K AEC-Q200 - - - - BVN -65°C +170°C
New
RS Stock No. 193-0028
Mfr. Part No.BVT-M-R001-1.0
TWD13.00
Each (On a Reel of 5000)
units
1 mΩ 2512 (6432M) - 1% 3 W @ 100°C 50ppm/K AEC-Q200 - - - - BVT -65°C +170°C