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 274,87
Each
Units
4.7Ω 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 538,38
Each
Units
4.7Ω 10% 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 566,40
Each
Units
10Ω 5% 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 554,23
Each
Units
22Ω 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
50Ω ±10% 12W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D12 7.94 x 44.4mm 7.94mm 44.4mm +350°C
RS Stock No. 788-7734
Mfr. Part No.RSSD20117A10R0JB15
BrandVishay
kr 281,65
Each
Units
10Ω 5% 100W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 22 (Dia.) x 117mm 22mm 117mm +450°C
RS Stock No. 893-1069
Mfr. Part No.D225K30R-B
BrandOhmite
kr 112,637
Each (In a Pack of 25)
Units
30Ω ±10% 225W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS Stock No. 788-7790
Mfr. Part No.RSSD30250A47R0JB06
BrandVishay
kr 548,45
Each
Units
47Ω 5% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS Stock No. 892-8347
Mfr. Part No.D50K750E
BrandOhmite
kr 161,31
Each
Units
750Ω ±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS Stock No. 892-1163
Mfr. Part No.E300K5R0E
BrandOhmite
kr 335,99
Each
Units
±10% 300W ±400ppm/°C - - - Bolt On, Bracket Vitreous Enamel E300 28.58 x 215.9mm 28.58mm 215.9mm +400°C
RS Stock No. 788-7848
Mfr. Part No.RA20117A100R0KB10
BrandVishay
kr 883,04
Each
Units
100Ω ±10% 50W - Screw Tubular Wire Wound - - RA20117 - - - +350°C
RS Stock No. 788-7775
Mfr. Part No.RSSD25168A47R0JB06
BrandVishay
kr 449,65
Each
Units
47Ω 5% 200W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C
RS Stock No. 892-4743
Mfr. Part No.D100K3R0E
BrandOhmite
kr 258,82
Each
Units
±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS Stock No. 892-4759
Mfr. Part No.D100K50RE
BrandOhmite
kr 220,24
Each
Units
50Ω ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS Stock No. 892-8192
Mfr. Part No.D50K100E
BrandOhmite
kr 165,90
Each
Units
100Ω ±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS Stock No. 892-8537
Mfr. Part No.D225K10KE
BrandOhmite
kr 290,33
Each
Units
10kΩ ±10% 225W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS Stock No. 893-3481
Mfr. Part No.D50K150E
BrandOhmite
kr 165,90
Each
Units
150Ω ±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS Stock No. 892-4796
Mfr. Part No.D12K5K0E
BrandOhmite
kr 123,03
Each
Units
5kΩ ±10% 12W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D12 7.94 x 44.4mm 7.94mm 44.4mm +350°C
RS Stock No. 892-4752
Mfr. Part No.D100K4R0E
BrandOhmite
kr 340,67
Each
Units
±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS Stock No. 892-4904
Mfr. Part No.D25K2R0E
BrandOhmite
kr 136,39
Each
Units
±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
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