Adjustable Resistors

Adjustable resistors, also known as potentiometers, allow a degree of control over the resistance within a circuit. This gives them an advantage over other types of fixed resistor, depending on your needs.
They are composed of a fixed resistive element, and a slider that is able to pass along the element. This is what changes the resistance of the circuit, and it is usually controlled externally.

What are adjustable resistors used for?
Adjustable resistors are most commonly used for volume control in TV and radio. They can also be used as part of a light dimmer, to indirectly affect the level of light.

Types of adjustable resistor
Adjustable resistors largely vary based on material:

  • Wirewound adjustable resistors use a coil of resistance wire, and offer the highest performance.
  • Cermet adjustable resistors are composed of ceramic and metal. They can withstand high temperatures, and are often used in trimmer resistors.
  • Carbon composition adjustable resistors are some of the most common types used, as they are a good all-purpose resistor.
  • Conductive plastic adjustable resistors use conductive plastic ink, and have a low noise output.

...
Read more Read less

Filters

Viewing 61 - 80 of 160 products
Results per page
Description Price Resistance Tolerance Power Rating Temperature Coefficient Termination Style Package/Case Technology Mounting Style Case Style Series Dimensions Diameter Length Maximum Operating Temperature
RS Stock No. 892-4787
Mfr. Part No.D12K50RE
BrandOhmite
MYR69.66
Each
units
50 Ω ±10% 12W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D12 7.94 x 44.4mm 7.94mm 44.4mm +350°C
RS Stock No. 892-4901
Mfr. Part No.D25K5K0E
BrandOhmite
MYR68.26
Each
units
5 kΩ ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS Stock No. 892-5746
Mfr. Part No.D25K150E
BrandOhmite
MYR69.84
Each
units
150 Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS Stock No. 892-4872
Mfr. Part No.D25K1R0E
BrandOhmite
MYR68.30
Each
units
1 Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS Stock No. 788-7845
Mfr. Part No.RA20117A10000KB10
BrandVishay
MYR292.78
Each
units
1 kΩ ±10% 50W - Screw Tubular Wire Wound - - RA20117 - - - +350°C
RS Stock No. 891-8568
Mfr. Part No.D50K500E
BrandOhmite
MYR76.58
Each
units
500 Ω ±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS Stock No. 893-0946
Mfr. Part No.E300KR50E
BrandOhmite
MYR199.70
Each
units
500 mΩ ±10% 300W ±400ppm/°C - - - Bolt On, Bracket Vitreous Enamel E300 28.58 x 215.9mm 28.58mm 215.9mm +400°C
RS Stock No. 167-9819
Mfr. Part No.RA20117A470R0KB10
BrandVishay
MYR308.709
Each (In a Box of 10)
units
- - - - - - - - - - - - - -
RS Stock No. 893-5103
Mfr. Part No.D25K7K0
BrandOhmite
MYR55.346
Each (In a Pack of 25)
units
7 kΩ ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS Stock No. 892-4850
Mfr. Part No.D25K100E
BrandOhmite
MYR69.84
Each
units
100 Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS Stock No. 892-5755
Mfr. Part No.D25K3R0E
BrandOhmite
MYR61.31
Each
units
3 Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS Stock No. 892-4926
Mfr. Part No.D50K20KE
BrandOhmite
MYR81.80
Each
units
20 kΩ ±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS Stock No. 892-4803
Mfr. Part No.D175K250E
BrandOhmite
MYR140.53
Each
units
250 Ω ±10% 175W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D175 28.6 x 215.9mm 28.6mm 215.9mm +350°C
RS Stock No. 788-7652
Mfr. Part No.RSSD25168AR220MB06
BrandVishay
MYR350.07
Each
units
220 mΩ ±20% 200W ±75ppm/°C Radial BA25 - Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C
RS Stock No. 788-7781
Mfr. Part No.RSSD30250A10R0JB06
BrandVishay
MYR322.17
Each
units
10 Ω 5% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS Stock No. 144-5504
Mfr. Part No.D100K2R0E
MYR132.36
Each
units
2 Ω ±10% 100W ±260ppm/°C Solder - Wire Wound Bolt On Vitreous Enamel 210 19.1 (Dia.) x 165.1mm 19.1mm 165.1mm +350°C
RS Stock No. 788-7728
Mfr. Part No.RSSD10X50A22R0JS06
BrandVishay
MYR108.48
Each
units
22 Ω 5% 25W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 11.5 (Dia.) x 50mm 11.5mm 50mm +450°C
RS Stock No. 893-0906
Mfr. Part No.E300K1R0E
BrandOhmite
MYR184.99
Each
units
1 Ω ±10% 300W ±400ppm/°C - - - Bolt On, Bracket Vitreous Enamel E300 28.58 x 215.9mm 28.58mm 215.9mm +400°C
RS Stock No. 892-4727
Mfr. Part No.D100K1K0E
BrandOhmite
MYR91.90
Each
units
1 kΩ ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS Stock No. 892-8335
Mfr. Part No.D100K2K5E
BrandOhmite
MYR113.01
Each
units
2.5 kΩ ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C