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. 892-4960
Mfr. Part No.D75K15RE
BrandOhmite
MYR102.33
Each
units
15Ω ±10% 75W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D75 14.3 x 152.4mm 14.3mm 152.4mm +350°C
RS Stock No. 892-4894
Mfr. Part No.D25K2K5E
BrandOhmite
MYR64.17
Each
units
2.5kΩ ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS Stock No. 167-9906
Mfr. Part No.RA20117A100R0KB10
BrandVishay
MYR321.663
Each (In a Box of 10)
units
- - - - - - - - - - - - - -
RS Stock No. 788-7738
Mfr. Part No.RSSD20117A1R00KB15
BrandVishay
MYR230.32
Each
units
10% 100W - Radial BA25 Wire Wound Flange Mount Vitreous Enamel RSSD 22 (Dia.) x 117mm 22mm 117mm +450°C
RS Stock No. 893-5579
Mfr. Part No.D225K300-B
BrandOhmite
MYR55.237
Each (In a Pack of 50)
units
300Ω ±10% 225W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS Stock No. 892-4850
Mfr. Part No.D25K100E
BrandOhmite
MYR60.08
Each
units
100Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS Stock No. 892-4730
Mfr. Part No.D100K250E
BrandOhmite
MYR100.49
Each
units
250Ω ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS Stock No. 892-1163
Mfr. Part No.E300K5R0E
BrandOhmite
MYR156.52
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. 892-5746
Mfr. Part No.D25K150E
BrandOhmite
MYR62.04
Each
units
150Ω ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS Stock No. 892-5755
Mfr. Part No.D25K3R0E
BrandOhmite
MYR60.08
Each
units
±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS Stock No. 892-4935
Mfr. Part No.D50K2R0E
BrandOhmite
MYR86.53
Each
units
±10% 50W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D50 14.3 x 101.6mm 14.3mm 101.6mm +350°C
RS Stock No. 161-7573
Mfr. Part No.ZC3/10-FT
BrandCressall
MYR615.04
Each
units
1.98Ω ±10% - - Screw - Wire Wound Bolt On - ZC - - 330mm +50°C
RS Stock No. 892-4838
Mfr. Part No.D225K2R0E
BrandOhmite
MYR198.24
Each
units
±10% 225W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS Stock No. 892-4840
Mfr. Part No.D225K4R0E
BrandOhmite
MYR185.60
Each
units
±10% 225W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D225 28.6 x 266.7mm 28.6mm 266.7mm +350°C
RS Stock No. 893-5092
Mfr. Part No.D100K100K
BrandOhmite
MYR92.27
Each (In a Pack of 25)
units
100kΩ ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS Stock No. 892-4727
Mfr. Part No.D100K1K0E
BrandOhmite
MYR103.45
Each
units
1kΩ ±10% 100W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D100 19.1 x 165.1mm 19.1mm 165.1mm +350°C
RS Stock No. 161-7581
Mfr. Part No.ZC6/11-FT
BrandCressall
MYR585.61
Each
units
4.4Ω ±10% - - Screw - Wire Wound Bolt On - ZC - - 555mm +50°C
RS Stock No. 892-4806
Mfr. Part No.D175K25RE
BrandOhmite
MYR150.07
Each
units
25Ω ±10% 175W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D175 28.6 x 215.9mm 28.6mm 215.9mm +350°C
RS Stock No. 893-5103
Mfr. Part No.D25K7K0
BrandOhmite
MYR50.18
Each (In a Pack of 25)
units
7kΩ ±10% 25W ±260ppm/°C - - - Bolt On, Bracket Vitreous Enamel D25 14.3 x 50.8mm 14.3mm 50.8mm +350°C
RS Stock No. 892-4888
Mfr. Part No.D25K25KE
BrandOhmite
MYR58.24
Each
units
25kΩ ±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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