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. 788-7747
Mfr. Part No.RSSD20117A22R0JB15
BrandVishay
R 534.51
Each
units
22 Ω 5% 100W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 22 (Dia.) x 117mm 22mm 117mm +450°C
RS stock no. 788-7744
Mfr. Part No.RSSD20117A47R0JB15
BrandVishay
R 515.48
Each
units
47 Ω 5% 100W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 22 (Dia.) x 117mm 22mm 117mm +450°C
RS stock no. 893-0902
Mfr. Part No.E300K16RE
BrandOhmite
R 653.82
Each
units
16 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. 788-7734
Mfr. Part No.RSSD20117A10R0JB15
BrandVishay
R 534.51
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. 892-4941
Mfr. Part No.D50K50KE
BrandOhmite
R 293.54
Each
units
50 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. 788-7716
Mfr. Part No.RSSD10X50A10R0JS06
BrandVishay
R 326.49
Each
units
10 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. 892-8192
Mfr. Part No.D50K100E
BrandOhmite
R 312.94
Each
units
100 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. 788-7762
Mfr. Part No.RSSD25168A22R0JB06
BrandVishay
R 799.79
Each
units
22 Ω 5% 200W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C
RS stock no. 892-5752
Mfr. Part No.D175K500E
BrandOhmite
R 569.97
Each
units
500 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. 892-8195
Mfr. Part No.D100K10KE
BrandOhmite
R 395.89
Each
units
10 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. 892-4913
Mfr. Part No.D50K10RE
BrandOhmite
R 289.06
Each
units
10 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. 893-0940
Mfr. Part No.E300KR80E
BrandOhmite
R 1,074.18
Each
units
800 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. 788-7756
Mfr. Part No.RSSD25168A10R0JB06
BrandVishay
R 829.83
Each
units
10 Ω 5% 200W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C
RS stock no. 892-4765
Mfr. Part No.D12K10RE
BrandOhmite
R 242.51
Each
units
10 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. 892-4799
Mfr. Part No.D12K5R0E
BrandOhmite
R 244.61
Each
units
5 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. 788-7841
Mfr. Part No.RA20117A470R0KB10
BrandVishay
R 1,291.65
Each
units
470 Ω ±10% 50W - Screw Tubular Wire Wound - - RA20117 - - - +350°C
RS stock no. 144-5507
Mfr. Part No.D50K50RE
R 327.20
Each
units
50 Ω ±10% 50W ±260ppm/°C Solder - Wire Wound Bolt On Vitreous Enamel 210 14.3 (Dia.) x 101.6mm 14.3mm 101.6mm +350°C
RS stock no. 788-7731
Mfr. Part No.RSSD20117A1000JB15
BrandVishay
R 534.34
Each
units
100 Ω 5% 100W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 22 (Dia.) x 117mm 22mm 117mm +450°C
RS stock no. 893-0930
Mfr. Part No.E300KR20E
BrandOhmite
R 752.17
Each (In a Pack of 5)
units
200 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. 788-7778
Mfr. Part No.RSSD30250AR470MB06
BrandVishay
R 1,361.71
Each
units
470 mΩ 20% 280W - Radial BA25 - Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C