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.

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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. 788-7740
Mfr. Part No.RSSD20117A4R70KB15
BrandVishay
kr 305,16
Each
Units
4.7 Ω 10% 100W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 22 (Dia.) x 117mm 22mm 117mm +450°C
RS Stock No. 788-7797
Mfr. Part No.RSSD30250A4R70KB06
BrandVishay
kr 598,80
Each
Units
4.7 Ω 10% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS Stock No. 788-7784
Mfr. Part No.RSSD30250A22R0JB06
BrandVishay
kr 616,43
Each
Units
22 Ω 5% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS Stock No. 788-7781
Mfr. Part No.RSSD30250A10R0JB06
BrandVishay
kr 629,96
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. 892-4787
Mfr. Part No.D12K50RE
BrandOhmite
kr 149,25
Each
Units
50 Ω ±10% 12W ±260ppm/°C Radial - - Bolt On, Bracket Vitreous Enamel D12 8 x 44.4mm 7.94mm 44.4mm +350°C
RS Stock No. 788-7790
Mfr. Part No.RSSD30250A47R0JB06
BrandVishay
kr 610,00
Each
Units
47 Ω 5% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS Stock No. 893-1069
Mfr. Part No.D225K30R-B
BrandOhmite
kr 112,637
Each (In a Pack of 25)
Units
30 Ω ±10% 225W ±260ppm/°C Radial - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS Stock No. 788-7734
Mfr. Part No.RSSD20117A10R0JB15
BrandVishay
kr 313,26
Each
Units
10 Ω 5% 100W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 22 (Dia.) x 117mm 22mm 117mm +450°C
RS Stock No. 893-0940
Mfr. Part No.E300KR80E
BrandOhmite
kr 410,66
Each
Units
0.8 Ω ±10% 300W ±400ppm/°C Radial - - Bolt On, Bracket Vitreous Enamel E300 28.58 x 215.9mm 28.58mm 215.9mm +400°C
RS Stock No. 788-7722
Mfr. Part No.RSSD10X50A5R60KS06
BrandVishay
kr 256,57
Each
Units
5.6 Ω 10% 25W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 11.5 (Dia.) x 50mm 11.5mm 50mm +450°C
RS Stock No. 892-4862
Mfr. Part No.D25K10RE
BrandOhmite
kr 127,92
Each
Units
10 Ω ±10% 25W ±260ppm/°C Radial - - 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
kr 172,48
Each
Units
20000 Ω ±10% 50W ±260ppm/°C Radial - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS Stock No. 892-4822
Mfr. Part No.D225K250E
BrandOhmite
kr 299,20
Each
Units
250 Ω ±10% 225W ±260ppm/°C Radial - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS Stock No. 892-4783
Mfr. Part No.D12K500E
BrandOhmite
kr 136,29
Each
Units
500 Ω ±10% 12W ±260ppm/°C Radial - - Bolt On, Bracket Vitreous Enamel D12 8 x 44.4mm 7.94mm 44.4mm +350°C
RS Stock No. 788-7649
Mfr. Part No.RSSD20117AR220MB15
BrandVishay
kr 342,17
Each
Units
0.22 Ω ±20% 100W - Radial BA25 - Flange Mount Vitreous Enamel RSSD 22 x 117mm 22mm 117mm +450°C
RS Stock No. 893-0921
Mfr. Part No.E300K4R0E
BrandOhmite
kr 346,06
Each
Units
4 Ω ±10% 300W ±400ppm/°C Radial - - Bolt On, Bracket Vitreous Enamel E300 28.58 x 215.9mm 28.58mm 215.9mm +400°C
RS Stock No. 892-8533
Mfr. Part No.D175K5R0E
BrandOhmite
kr 392,02
Each
Units
5 Ω ±10% 175W ±260ppm/°C Radial - - Bolt On, Bracket Vitreous Enamel D175 28.6 x 215.9mm 28.6mm 215.9mm +350°C
RS Stock No. 892-4727
Mfr. Part No.D100K1K0E
BrandOhmite
kr 220,24
Each
Units
1000 Ω ±10% 100W ±260ppm/°C Radial - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS Stock No. 892-5749
Mfr. Part No.D12K10KE
BrandOhmite
kr 108,581
Each (In a Pack of 25)
Units
10000 Ω ±10% 12W ±260ppm/°C Radial - - Bolt On, Bracket Vitreous Enamel D12 8 x 44.4mm 7.94mm 44.4mm +350°C
RS Stock No. 167-9819
Mfr. Part No.RA20117A470R0KB10
BrandVishay
kr 629,336
Each (In a Box of 10)
Units
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