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 resistorAdjustable 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. 788-7772
Mfr. Part No.RSSD30250A1000JB06
BrandVishay
TWD2,359.00
Each
units
100 Ω 5% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS Stock No. 788-7744
Mfr. Part No.RSSD20117A47R0JB15
BrandVishay
TWD1,104.00
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. 161-7576
Mfr. Part No.ZC6/5-FT
BrandCressall
TWD6,589.00
Each
units
980 mΩ ±10% - - Screw - Wire Wound Bolt On - ZC - - 555mm +50°C
RS Stock No. 161-7577
Mfr. Part No.ZC6/6-FT
BrandCressall
TWD7,008.00
Each
units
1.31 Ω ±10% - - Screw - Wire Wound Bolt On - ZC - - 555mm +50°C
RS Stock No. 788-7747
Mfr. Part No.RSSD20117A22R0JB15
BrandVishay
TWD1,162.00
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. 788-7778
Mfr. Part No.RSSD30250AR470MB06
BrandVishay
TWD2,452.00
Each
units
470 mΩ 20% 280W - Radial BA25 - Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS Stock No. 161-7578
Mfr. Part No.ZC6/8-FT
BrandCressall
TWD5,304.00
Each
units
1.68 Ω ±10% - - Screw - Wire Wound Bolt On - ZC - - 555mm +50°C
RS Stock No. 788-7781
Mfr. Part No.RSSD30250A10R0JB06
BrandVishay
TWD2,359.00
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. 788-7750
Mfr. Part No.RSSD25168A1R00KB06
BrandVishay
TWD2,417.00
Each
units
1 Ω 10% 200W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C
RS Stock No. 892-4806
Mfr. Part No.D175K25RE
BrandOhmite
TWD1,244.00
Each
units
25 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. 892-4904
Mfr. Part No.D25K2R0E
BrandOhmite
TWD531.00
Each
units
2 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. 892-4856
Mfr. Part No.D225K5R0E
BrandOhmite
TWD1,365.00
Each
units
5 Ω ±10% 225W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS Stock No. 892-4759
Mfr. Part No.D100K50RE
BrandOhmite
TWD857.00
Each
units
50 Ω ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS Stock No. 161-7579
Mfr. Part No.ZC6/9-FT
BrandCressall
TWD5,002.00
Each
units
2.53 Ω ±10% - - Screw - Wire Wound Bolt On - ZC - - 555mm +50°C
RS Stock No. 892-4834
Mfr. Part No.D225K2K5E
BrandOhmite
TWD1,120.00
Each
units
2.5 kΩ ±10% 225W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS Stock No. 144-5509
Mfr. Part No.D50K75RE
TWD659.00
Each
units
75 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. 892-8300
Mfr. Part No.D25K200E
BrandOhmite
TWD514.00
Each
units
200 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. 892-8259
Mfr. Part No.D12K1K0E
BrandOhmite
TWD458.00
Each
units
1 kΩ ±10% 12W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D12 7.94 x 44.4mm 7.94mm 44.4mm +350°C
RS Stock No. 893-5421
Mfr. Part No.D12K75RE
BrandOhmite
TWD513.00
Each
units
75 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. 892-4888
Mfr. Part No.D25K25KE
BrandOhmite
TWD483.00
Each
units
25 kΩ ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C