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. 788-7769
Mfr. Part No.RSSD25168A2200JB06
BrandVishay
PHP3,734.28
Each
units
220 Ω 5% 200W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C
RS Stock No. 893-0918
Mfr. Part No.E300K2R0E
BrandOhmite
PHP2,086.81
Each
units
2 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. 788-7756
Mfr. Part No.RSSD25168A10R0JB06
BrandVishay
PHP3,524.82
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. 893-0906
Mfr. Part No.E300K1R0E
BrandOhmite
PHP2,173.76
Each
units
1 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. 788-7659
Mfr. Part No.RSSD25168A2R20KB06
BrandVishay
PHP2,609.71
Each
units
2.2 Ω ±10% 200W - Radial BA25 - Bolt On Vitreous Enamel RSSD 27 x 168mm 27mm 168mm +450°C
RS Stock No. 893-0921
Mfr. Part No.E300K4R0E
BrandOhmite
PHP2,760.90
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. 788-7734
Mfr. Part No.RSSD20117A10R0JB15
BrandVishay
PHP1,832.13
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. 788-7797
Mfr. Part No.RSSD30250A4R70KB06
BrandVishay
PHP4,026.23
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. 788-7753
Mfr. Part No.RSSD25168A1000JB06
BrandVishay
PHP3,524.82
Each
units
100 Ω 5% 200W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C
RS Stock No. 788-7772
Mfr. Part No.RSSD30250A1000JB06
BrandVishay
PHP4,024.42
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. 788-7788
Mfr. Part No.RSSD30250A3300JB06
BrandVishay
PHP4,690.61
Each
units
330 Ω 5% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS Stock No. 893-0924
Mfr. Part No.E300K6R3E
BrandOhmite
PHP2,009.12
Each
units
6 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. 892-4727
Mfr. Part No.D100K1K0E
BrandOhmite
PHP1,079.96
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. 892-8537
Mfr. Part No.D225K10KE
BrandOhmite
PHP1,775.03
Each
units
10000 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. 892-5758
Mfr. Part No.D75K100E
BrandOhmite
PHP1,314.08
Each
units
100 Ω ±10% 75W ±260ppm/°C Radial - - Bolt On, Bracket Vitreous Enamel D75 14.3 x 152.4mm 14.3mm 152.4mm +350°C
RS Stock No. 788-7766
Mfr. Part No.RSSD25168A4R70KB06
BrandVishay
PHP3,861.12
Each
units
4.7 Ω 10% 200W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C
RS Stock No. 788-7790
Mfr. Part No.RSSD30250A47R0JB06
BrandVishay
PHP4,024.42
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. 788-7784
Mfr. Part No.RSSD30250A22R0JB06
BrandVishay
PHP3,854.90
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. 892-4828
Mfr. Part No.D225K1R0E
BrandOhmite
PHP2,890.98
Each
units
1 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. 892-4917
Mfr. Part No.D50K1K0E
BrandOhmite
PHP1,021.28
Each
units
1000 Ω ±10% 50W ±260ppm/°C Radial - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C