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. 788-7790
Mfr. Part No.RSSD30250A47R0JB06
BrandVishay
$135.35
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. 788-7744
Mfr. Part No.RSSD20117A47R0JB15
BrandVishay
$56.33
Each
units
47Ω 5% 100W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 22 (Dia.) x 117mm 22mm 117mm +450°C
RS Stock No. 788-7747
Mfr. Part No.RSSD20117A22R0JB15
BrandVishay
$56.98
Each
units
22Ω 5% 100W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 22 (Dia.) x 117mm 22mm 117mm +450°C
RS Stock No. 788-7652
Mfr. Part No.RSSD25168AR220MB06
BrandVishay
$90.99
Each
units
220mΩ ±20% 200W ±75ppm/°C Radial BA25 - Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C
RS Stock No. 144-5497
Mfr. Part No.C300K10RE
$42.61
Each
units
10Ω ±10% 300W ±400ppm/°C Solder Tubular Wire Wound - - 280 28.58 (Dia.) x 215.9mm - - +400°C
RS Stock No. 788-7772
Mfr. Part No.RSSD30250A1000JB06
BrandVishay
$114.45
Each
units
100Ω 5% 280W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS Stock No. 788-7778
Mfr. Part No.RSSD30250AR470MB06
BrandVishay
$141.02
Each
units
470mΩ 20% 280W - Radial BA25 - Bolt On Vitreous Enamel RSSD 32 (Dia.) x 250mm 32mm 250mm +450°C
RS Stock No. 788-7734
Mfr. Part No.RSSD20117A10R0JB15
BrandVishay
$64.46
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. 144-5507
Mfr. Part No.D50K50RE
$30.85
Each
units
50Ω ±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. 161-7570
Mfr. Part No.ZC3/6-FT
BrandCressall
$251.61
Each
units
650mΩ ±10% - - Screw - Wire Wound Bolt On - ZC - - 330mm +50°C
RS Stock No. 788-7781
Mfr. Part No.RSSD30250A10R0JB06
BrandVishay
$114.45
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. 788-7738
Mfr. Part No.RSSD20117A1R00KB15
BrandVishay
$88.06
Each
units
10% 100W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 22 (Dia.) x 117mm 22mm 117mm +450°C
RS Stock No. 144-5503
Mfr. Part No.D100K25RE
$41.44
Each
units
25Ω ±10% 100W ±260ppm/°C Solder - Wire Wound Bolt On Vitreous Enamel 210 19.1 (Dia.) x 165.1mm 19.1mm 165.1mm +350°C
RS Stock No. 144-5508
Mfr. Part No.D50K5R0E
$33.13
Each
units
±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. 144-5504
Mfr. Part No.D100K2R0E
$51.42
Each
units
±10% 100W ±260ppm/°C Solder - Wire Wound Bolt On Vitreous Enamel 210 19.1 (Dia.) x 165.1mm 19.1mm 165.1mm +350°C
RS Stock No. 167-9773
Mfr. Part No.RA20117A10000KB10
BrandVishay
$114.107
Each (In a Box of 10)
units
- - - - - - - - - - - - - -
RS Stock No. 788-7769
Mfr. Part No.RSSD25168A2200JB06
BrandVishay
$102.17
Each
units
220Ω 5% 200W - Radial BA25 Wire Wound Bolt On Vitreous Enamel RSSD 27 (Dia.) x 168mm 27mm 168mm +450°C
RS Stock No. 788-7775
Mfr. Part No.RSSD25168A47R0JB06
BrandVishay
$98.95
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. 144-5506
Mfr. Part No.D25K300E
$25.59
Each
units
300Ω ±10% 25W ±260ppm/°C Solder - Wire Wound Bolt On Vitreous Enamel 210 14.3 (Dia.) x 50.8mm 14.3mm 50.8mm +350°C
RS Stock No. 167-9906
Mfr. Part No.RA20117A100R0KB10
BrandVishay
$124.617
Each (In a Box of 10)
units
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