Thermistors

Thermistors

Thermistors, or thermally-sensitive resistors are resistors whose resistance depends on temperature and can therefore be used for temperature measurement and regulation in a circuit or to react to a temperature change. Here at Rhopoint Components we offer a range of thermistors by the leading manufacturer Ametherm, including NTC (Negative Temperature Coefficient), PTC (Positive Temperature Coefficient) and Inrush Current limiting.

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Ametherm ACC-001

The ACC-001 precision interchangeable NTC thermistor from Ametherm is part of their ACCU-CURVE™ series. The ACC-001 offer a high degree of accuracy and reliability with a resistance of 2.252kΩ at +25°C and a temperature tolerance of ±0.2°C between 0°C and +70°C. The Ametherm ACCU-CURVE™ series commonly perform temperature sensing, control and compensation for medical, industrial and automotive applications. The complete series offers interchangeability over a broad temperature range and eliminates the need to individually calibrate or provide circuit compensation for part variability.

  • Precision interchangeable NTC thermistor
  • Small bead design with 32AWG tinned copper leads
  • Resistance of 2.252kΩ (at 25°C)
  • Temperature tolerance of ±0.2°C between 0°C and +70°C
  • Resistance / temperature curve "C"
  • Dissipation constant of 1mW/°C (minimum)
  • Thermal time constant of 3.5s nominal
  • Beta value of 3892°K (0°C / 50°C)
  • Maximum power rating of 250mW
  • Brown colour code

Typical applications for the ACCU-CURVE™ series include:

  • Temperature sensing
  • Control systems
  • Compensation systems
The below table gives the full specifications of the Ametherm ACCU-CURVE™ series including the ACC-001 thermistor:

Ametherm ACCU-CURVE™ Specifications

£0.00 Ex Tax: £0.00

Ametherm ACC-002

The ACC-002 precision interchangeable NTC thermistor from Ametherm is part of their ACCU-CURVE™ series. The ACC-002 offer a high degree of accuracy and reliability with a resistance of 3kΩ at +25°C and a temperature tolerance of ±0.2°C between 0°C and +70°C. The Ametherm ACCU-CURVE™ series commonly perform temperature sensing, control and compensation for medical, industrial and automotive applications. The complete series offers interchangeability over a broad temperature range and eliminates the need to individually calibrate or provide circuit compensation for part variability.

  • Precision interchangeable NTC thermistor
  • Small bead design with 32AWG tinned copper leads
  • Resistance of 3kΩ (at 25°C)
  • Temperature tolerance of ±0.2°C between 0°C and +70°C
  • Resistance / temperature curve "C"
  • Dissipation constant of 1mW/°C (minimum)
  • Thermal time constant of 3.5s nominal
  • Beta value of 3892°K (0°C / 50°C)
  • Maximum power rating of 250mW
  • Red colour code

Typical applications for the ACCU-CURVE™ series include:

  • Temperature sensing
  • Control systems
  • Compensation systems
The below table gives the full specifications of the Ametherm ACCU-CURVE™ series including the ACC-002 thermistor:

Ametherm ACCU-CURVE™ Specifications

£0.00 Ex Tax: £0.00

Ametherm ACC-003

The ACC-003 precision interchangeable NTC thermistor from Ametherm is part of their ACCU-CURVE™ series. The ACC-003 offer a high degree of accuracy and reliability with a resistance of 5kΩ at +25°C and a temperature tolerance of ±0.2°C between 0°C and +70°C. The Ametherm ACCU-CURVE™ series commonly perform temperature sensing, control and compensation for medical, industrial and automotive applications. The complete series offers interchangeability over a broad temperature range and eliminates the need to individually calibrate or provide circuit compensation for part variability.

  • Precision interchangeable NTC thermistor
  • Small bead design with 32AWG tinned copper leads
  • Resistance of 5kΩ (at 25°C)
  • Temperature tolerance of ±0.2°C between 0°C and +70°C
  • Resistance / temperature curve "C"
  • Dissipation constant of 1mW/°C (minimum)
  • Thermal time constant of 3.5s nominal
  • Beta value of 3892°K (0°C / 50°C)
  • Maximum power rating of 250mW
  • Orange colour code

Typical applications for the ACCU-CURVE™ series include:

  • Temperature sensing
  • Control systems
  • Compensation systems
The below table gives the full specifications of the Ametherm ACCU-CURVE™ series including the ACC-003 thermistor:

Ametherm ACCU-CURVE™ Specifications

£0.00 Ex Tax: £0.00

Ametherm ACC-004

The ACC-004 precision interchangeable NTC thermistor from Ametherm is part of their ACCU-CURVE™ series. The ACC-004 offer a high degree of accuracy and reliability with a resistance of 10kΩ at +25°C and a temperature tolerance of ±0.2°C between 0°C and +70°C. The Ametherm ACCU-CURVE™ series commonly perform temperature sensing, control and compensation for medical, industrial and automotive applications. The complete series offers interchangeability over a broad temperature range and eliminates the need to individually calibrate or provide circuit compensation for part variability.

  • Precision interchangeable NTC thermistor
  • Small bead design with 32AWG tinned copper leads
  • Resistance of 10kΩ (at 25°C)
  • Temperature tolerance of ±0.2°C between 0°C and +70°C
  • Resistance / temperature curve "C"
  • Dissipation constant of 1mW/°C (minimum)
  • Thermal time constant of 3.5s nominal
  • Beta value of 3892°K (0°C / 50°C)
  • Maximum power rating of 250mW
  • Yellow colour code

Typical applications for the ACCU-CURVE™ series include:

  • Temperature sensing
  • Control systems
  • Compensation systems
The below table gives the full specifications of the Ametherm ACCU-CURVE™ series including the ACC-004 thermistor:

Ametherm ACCU-CURVE™ Specifications

£0.00 Ex Tax: £0.00

Ametherm ACW-005

The ACW-005 precision interchangeable NTC thermistor from Ametherm is part of their ACCU-CURVE™ series. The ACW-005 offer a high degree of accuracy and reliability with a resistance of 30kΩ at +25°C and a temperature tolerance of ±0.2°C between 0°C and +70°C. The Ametherm ACCU-CURVE™ series commonly perform temperature sensing, control and compensation for medical, industrial and automotive applications. The complete series offers interchangeability over a broad temperature range and eliminates the need to individually calibrate or provide circuit compensation for part variability.

  • Precision interchangeable NTC thermistor
  • Small bead design with 32AWG tinned copper leads
  • Resistance of 30kΩ (at 25°C)
  • Temperature tolerance of ±0.2°C between 0°C and +70°C
  • Resistance / temperature curve "W"
  • Dissipation constant of 1mW/°C (minimum)
  • Thermal time constant of 3.5s nominal
  • Beta value of 4143°K (0°C / 50°C)
  • Maximum power rating of 250mW
  • Green colour code

Typical applications for the ACCU-CURVE™ series include:

  • Temperature sensing
  • Control systems
  • Compensation systems
The below table gives the full specifications of the Ametherm ACCU-CURVE™ series including the ACW-005 thermistor:

Ametherm ACCU-CURVE™ Specifications

£0.00 Ex Tax: £0.00

Ametherm ACW-006

The ACW-006 precision interchangeable NTC thermistor from Ametherm is part of their ACCU-CURVE™ series. The ACW-006 offer a high degree of accuracy and reliability with a resistance of 50kΩ at +25°C and a temperature tolerance of ±0.2°C between 0°C and +70°C. The Ametherm ACCU-CURVE™ series commonly perform temperature sensing, control and compensation for medical, industrial and automotive applications. The complete series offers interchangeability over a broad temperature range and eliminates the need to individually calibrate or provide circuit compensation for part variability.

  • Precision interchangeable NTC thermistor
  • Small bead design with 32AWG tinned copper leads
  • Resistance of 50kΩ (at 25°C)
  • Temperature tolerance of ±0.2°C between 0°C and +70°C
  • Resistance / temperature curve "W"
  • Dissipation constant of 1mW/°C (minimum)
  • Thermal time constant of 3.5s nominal
  • Beta value of 4143°K (0°C / 50°C)
  • Maximum power rating of 250mW
  • Blue colour code

Typical applications for the ACCU-CURVE™ series include:

  • Temperature sensing
  • Control systems
  • Compensation systems
The below table gives the full specifications of the Ametherm ACCU-CURVE™ series including the ACW-006 thermistor:

Ametherm ACCU-CURVE™ Specifications

£0.00 Ex Tax: £0.00

Ametherm ACW-007

The ACW-007 precision interchangeable NTC thermistor from Ametherm is part of their ACCU-CURVE™ series. The ACW-007 offer a high degree of accuracy and reliability with a resistance of 100kΩ at +25°C and a temperature tolerance of ±0.2°C between 0°C and +70°C. The Ametherm ACCU-CURVE™ series commonly perform temperature sensing, control and compensation for medical, industrial and automotive applications. The complete series offers interchangeability over a broad temperature range and eliminates the need to individually calibrate or provide circuit compensation for part variability.

  • Precision interchangeable NTC thermistor
  • Small bead design with 32AWG tinned copper leads
  • Resistance of 100kΩ (at 25°C)
  • Temperature tolerance of ±0.2°C between 0°C and +70°C
  • Resistance / temperature curve "W"
  • Dissipation constant of 1mW/°C (minimum)
  • Thermal time constant of 3.5s nominal
  • Beta value of 4143°K (0°C / 50°C)
  • Maximum power rating of 250mW
  • Violet colour code

Typical applications for the ACCU-CURVE™ series include:

  • Temperature sensing
  • Control systems
  • Compensation systems
The below table gives the full specifications of the Ametherm ACCU-CURVE™ series including the ACW-007 thermistor:

Ametherm ACCU-CURVE™ Specifications

£0.00 Ex Tax: £0.00

Ametherm AS32 0R530

The AS32 0R530 inrush current limiting thermistor from Ametherm offers a maximum steady state current of 30A (up to +25°C) and a resistance of 0.5Ω ±25% (at 25°C). The Ametherm AS series are designed to withstand high steady-state current and input energy. Compared to traditional inrush current limiters, the devices offer lower current density, faster reset times, and a wider temperature range without derating. This lower current density, in combination with a uniform temperature gradient throughout the disc, increases reliability by eliminating hot spots from fatigue. The AS series from Ametherm are suitable for high energy and short term high current applications.

  • Inrush current limiting thermistor
  • Resistance of 0.5Ω ±25% (at 25°C)
  • Maximum steady state current of 30A (up to +25°C)
  • Maximum recommended energy of 300J (Actual energy failure at 600J)
  • 0.01Ω at 100% maximum current and 0.03Ω at 50% maximum current
  • Body temperature of +183°C at maximum current
  • Material type B (for beta and curve)
  • Dissipation constant of 78.2mW/°C
  • Thermal time constant of 63mW/s
  • Recognised by Underwriters Laboratories (UL) for ensured safety

Typical applications for the AS series include:

  • Protection of pre-charge circuits in lithium ion batteries
  • Variable-frequency drives in sports equipment like treadmills, high-speed computers and processors
  • Switch mode power supplies for plasma cutters, welders, audio amplifiers, MRIs and x-ray machines
The below table gives the full specifications of the Ametherm AS32 0R530 series:

Ametherm AS32 0R530 Specifications

£0.00 Ex Tax: £0.00

Ametherm AS32 0R536

The AS32 0R536 inrush current limiting thermistor from Ametherm offers a maximum steady state current of 36A (up to +25°C) and a resistance of 0.5Ω ±25% (at 25°C). The Ametherm AS series are designed to withstand high steady-state current and input energy. Compared to traditional inrush current limiters, the devices offer lower current density, faster reset times, and a wider temperature range without derating. This lower current density, in combination with a uniform temperature gradient throughout the disc, increases reliability by eliminating hot spots from fatigue. The AS series from Ametherm are suitable for high energy and short term high current applications.

  • Inrush current limiting thermistor
  • Resistance of 0.5Ω ±25% (at 25°C)
  • Maximum steady state current of 36A (up to +25°C)
  • Maximum recommended energy of 300J (Actual energy failure at 600J)
  • 0.01Ω at 100% maximum current and 0.03Ω at 50% maximum current
  • Body temperature of +183°C at maximum current
  • Material type B (for beta and curve)
  • Dissipation constant of 78.2mW/°C
  • Thermal time constant of 55mW/s
  • Recognised by Underwriters Laboratories (UL) for ensured safety

Typical applications for the AS series include:

  • Protection of pre-charge circuits in lithium ion batteries
  • Variable-frequency drives in sports equipment like treadmills, high-speed computers and processors
  • Switch mode power supplies for plasma cutters, welders, audio amplifiers, MRIs and x-ray machines
The below table gives the full specifications of the Ametherm AS32 0R536 series:

Ametherm AS32 0R536 Specifications

£0.00 Ex Tax: £0.00

Ametherm AS32 10015

The AS32 10015 inrush current limiting thermistor from Ametherm offers a maximum steady state current of 15A (up to +25°C) and a resistance of 10Ω ±25% (at 25°C). The Ametherm AS series are designed to withstand high steady-state current and input energy. Compared to traditional inrush current limiters, the devices offer lower current density, faster reset times, and a wider temperature range without derating. This lower current density, in combination with a uniform temperature gradient throughout the disc, increases reliability by eliminating hot spots from fatigue. The AS series from Ametherm are suitable for high energy and short term high current applications.

  • Inrush current limiting thermistor
  • Resistance of 10Ω ±25% (at 25°C)
  • Maximum steady state current of 15A (up to +25°C)
  • Maximum recommended energy of 250J (Actual energy failure at 500J)
  • 0.03Ω at 100% maximum current and 0.06Ω at 50% maximum current
  • Body temperature of +185°C at maximum current
  • Material type I (for beta and curve)
  • Dissipation constant of 85.2mW/°C
  • Thermal time constant of 64mW/s
  • Recognised by Underwriters Laboratories (UL) for ensured safety

Typical applications for the AS series include:

  • Protection of pre-charge circuits in lithium ion batteries
  • Variable-frequency drives in sports equipment like treadmills, high-speed computers and processors
  • Switch mode power supplies for plasma cutters, welders, audio amplifiers, MRIs and x-ray machines
The below table gives the full specifications of the Ametherm AS32 10015 series:

Ametherm AS32 10015 Specifications

£0.00 Ex Tax: £0.00

Ametherm AS32 1R030

The AS32 1R030 inrush current limiting thermistor from Ametherm offers a maximum steady state current of 30A (up to +25°C) and a resistance of 1Ω ±25% (at 25°C). The Ametherm AS series are designed to withstand high steady-state current and input energy. Compared to traditional inrush current limiters, the devices offer lower current density, faster reset times, and a wider temperature range without derating. This lower current density, in combination with a uniform temperature gradient throughout the disc, increases reliability by eliminating hot spots from fatigue. The AS series from Ametherm are suitable for high energy and short term high current applications.

  • Inrush current limiting thermistor
  • Resistance of 1Ω ±25% (at 25°C)
  • Maximum steady state current of 30A (up to +25°C)
  • Maximum recommended energy of 300J (Actual energy failure at 600J)
  • 0.01Ω at 100% maximum current and 0.03Ω at 50% maximum current
  • Body temperature of +215°C at maximum current
  • Material type B (for beta and curve)
  • Dissipation constant of 48mW/°C
  • Thermal time constant of 55mW/s
  • Recognised by Underwriters Laboratories (UL) for ensured safety

Typical applications for the AS series include:

  • Protection of pre-charge circuits in lithium ion batteries
  • Variable-frequency drives in sports equipment like treadmills, high-speed computers and processors
  • Switch mode power supplies for plasma cutters, welders, audio amplifiers, MRIs and x-ray machines
The below table gives the full specifications of the Ametherm AS32 1R030 series:

Ametherm AS32 1R030 Specifications

£0.00 Ex Tax: £0.00

Ametherm AS32 1R036

The AS32 1R036 inrush current limiting thermistor from Ametherm offers a maximum steady state current of 36A (up to +25°C) and a resistance of 1Ω ±25% (at 25°C). The Ametherm AS series are designed to withstand high steady-state current and input energy. Compared to traditional inrush current limiters, the devices offer lower current density, faster reset times, and a wider temperature range without derating. This lower current density, in combination with a uniform temperature gradient throughout the disc, increases reliability by eliminating hot spots from fatigue. The AS series from Ametherm are suitable for high energy and short term high current applications.

  • Inrush current limiting thermistor
  • Resistance of 1Ω ±25% (at 25°C)
  • Maximum steady state current of 36A (up to +25°C)
  • Maximum recommended energy of 300J (Actual energy failure at 600J)
  • 0.02Ω at 100% maximum current and 0.03Ω at 50% maximum current
  • Body temperature of +215°C at maximum current
  • Material type B (for beta and curve)
  • Dissipation constant of 48mW/°C
  • Thermal time constant of 60mW/s
  • Recognised by Underwriters Laboratories (UL) for ensured safety

Typical applications for the AS series include:

  • Protection of pre-charge circuits in lithium ion batteries
  • Variable-frequency drives in sports equipment like treadmills, high-speed computers and processors
  • Switch mode power supplies for plasma cutters, welders, audio amplifiers, MRIs and x-ray machines
The below table gives the full specifications of the Ametherm AS32 1R036 series:

Ametherm AS32 1R036 Specifications

£0.00 Ex Tax: £0.00

Ametherm AS32 20010

The AS32 20010 inrush current limiting thermistor from Ametherm offers a maximum steady state current of 10A (up to +25°C) and a resistance of 20Ω ±25% (at 25°C). The Ametherm AS series are designed to withstand high steady-state current and input energy. Compared to traditional inrush current limiters, the devices offer lower current density, faster reset times, and a wider temperature range without derating. This lower current density, in combination with a uniform temperature gradient throughout the disc, increases reliability by eliminating hot spots from fatigue. The AS series from Ametherm are suitable for high energy and short term high current applications.

  • Inrush current limiting thermistor
  • Resistance of 20Ω ±25% (at 25°C)
  • Maximum steady state current of 10A (up to +25°C)
  • Maximum recommended energy of 250J (Actual energy failure at 500J)
  • 0.06Ω at 100% maximum current and 0.13Ω at 50% maximum current
  • Body temperature of +192°C at maximum current
  • Material type I (for beta and curve)
  • Dissipation constant of 58mW/°C
  • Thermal time constant of 67mW/s
  • Recognised by Underwriters Laboratories (UL) for ensured safety

Typical applications for the AS series include:

  • Protection of pre-charge circuits in lithium ion batteries
  • Variable-frequency drives in sports equipment like treadmills, high-speed computers and processors
  • Switch mode power supplies for plasma cutters, welders, audio amplifiers, MRIs and x-ray machines
The below table gives the full specifications of the Ametherm AS32 20010 series:

Ametherm AS32 20010 Specifications

£0.00 Ex Tax: £0.00

Ametherm AS32 2R025

The AS32 2R025 inrush current limiting thermistor from Ametherm offers a maximum steady state current of 25A (up to +25°C) and a resistance of 2Ω ±25% (at 25°C). The Ametherm AS series are designed to withstand high steady-state current and input energy. Compared to traditional inrush current limiters, the devices offer lower current density, faster reset times, and a wider temperature range without derating. This lower current density, in combination with a uniform temperature gradient throughout the disc, increases reliability by eliminating hot spots from fatigue. The AS series from Ametherm are suitable for high energy and short term high current applications.

  • Inrush current limiting thermistor
  • Resistance of 2Ω ±25% (at 25°C)
  • Maximum steady state current of 25A (up to +25°C)
  • Maximum recommended energy of 300J (Actual energy failure at 600J)
  • 0.02Ω at 100% maximum current and 0.04Ω at 50% maximum current
  • Body temperature of +220°C at maximum current
  • Material type B (for beta and curve)
  • Dissipation constant of 78.2mW/°C
  • Thermal time constant of 0mW/s
  • Recognised by Underwriters Laboratories (UL) for ensured safety

Typical applications for the AS series include:

  • Protection of pre-charge circuits in lithium ion batteries
  • Variable-frequency drives in sports equipment like treadmills, high-speed computers and processors
  • Switch mode power supplies for plasma cutters, welders, audio amplifiers, MRIs and x-ray machines
The below table gives the full specifications of the Ametherm AS32 2R025 series:

Ametherm AS32 2R025 Specifications

£0.00 Ex Tax: £0.00

Ametherm AS32 50006

The AS32 50006 inrush current limiting thermistor from Ametherm offers a maximum steady state current of 6A (up to +25°C) and a resistance of 50Ω ±25% (at 25°C). The Ametherm AS series are designed to withstand high steady-state current and input energy. Compared to traditional inrush current limiters, the devices offer lower current density, faster reset times, and a wider temperature range without derating. This lower current density, in combination with a uniform temperature gradient throughout the disc, increases reliability by eliminating hot spots from fatigue. The AS series from Ametherm are suitable for high energy and short term high current applications.

  • Inrush current limiting thermistor
  • Resistance of 50Ω ±25% (at 25°C)
  • Maximum steady state current of 6A (up to +25°C)
  • Maximum recommended energy of 250J (Actual energy failure at 500J)
  • 0.03Ω at 100% maximum current and 1.05Ω at 50% maximum current
  • Body temperature of +212°C at maximum current
  • Material type B (for beta and curve)
  • Dissipation constant of 78.2mW/°C
  • Thermal time constant of 73mW/s
  • Recognised by Underwriters Laboratories (UL) for ensured safety

Typical applications for the AS series include:

  • Protection of pre-charge circuits in lithium ion batteries
  • Variable-frequency drives in sports equipment like treadmills, high-speed computers and processors
  • Switch mode power supplies for plasma cutters, welders, audio amplifiers, MRIs and x-ray machines
The below table gives the full specifications of the Ametherm AS32 50006 series:

Ametherm AS32 50006 Specifications

£0.00 Ex Tax: £0.00