Scientific Instrumentation

A wide range of precision and ultra-precision resistors from Alpha Electronics, General Resistance and Susumu, power resistors from Caddock and current sensing resistors and shunts from Isabellenhütte in a variety surface-mount and through-hole packages and virtually any resistance value.

Variety of NTC and PTC thermistors, thermal probes and inrush current limiters from Ametherm.

A range of digital isolators from NVE Corporation, based on their patented spintronic GMR technology.

Scientific Instrumentation

  • Caddock

Caddock HVD Series

  • Ultra-precision through-hole high voltage divider
  • 6 standard models of the HVD series
  • Monolithic voltage dividers built with ceramic sandwich construction
  • Ratios (RT:R2) of 100:1 or 1,000:1
  • Ideal for high performance voltage division applications in medical equipment, laboratory equipment and analytical instruments
  • Over voltage of 1.5 times rated voltage for 5s
  • Exempt
  • Caddock

Caddock MG Standard Range

  • Cylindrical high voltage axial leaded resistor
  • Maximum operating voltage from 600V up to 30kV *
  • Resistance values from 200Ω up to 2GΩ *
  • Tolerances of ±0.1%, ±0.25%, ±0.5% and ±1%
  • TCR as tight as ±80 ppm/°C from -15°C to +105°C
  • Maximum power rating from 0.5W up to 15W *
  • Operating Temperature Range of -55°C to +225°C
* Dependant on selected resistor model
  • Exempt
  • Ametherm

Ametherm ACC-001

  • Precision interchangeable NTC thermistor
  • Brown coloured small bead design
  • Resistance of 2.252kΩ (at 25°C)
  • Tolerance of ±0.2°C
  • Maximum power rating of 250mW
  • Temperature range from -40°C to +150°C
  • Compliant
  • Ametherm

Ametherm ACC-002

  • Precision interchangeable NTC thermistor
  • Red coloured small bead design
  • Resistance of 3kΩ (at 25°C)
  • Tolerance of ±0.2°C
  • Maximum power rating of 250mW
  • Temperature range from -40°C to +150°C
  • Compliant
  • Ametherm

Ametherm ACC-003

  • Precision interchangeable NTC thermistor
  • Orange coloured small bead design
  • Resistance of 5kΩ (at 25°C)
  • Tolerance of ±0.2°C
  • Maximum power rating of 250mW
  • Temperature range from -40°C to +150°C
  • Compliant
  • Ametherm

Ametherm ACC-004

  • Precision interchangeable NTC thermistor
  • Yellow coloured small bead design
  • Resistance of 10kΩ (at 25°C)
  • Tolerance of ±0.2°C
  • Maximum power rating of 250mW
  • Yellow colour code
  • Temperature range from -40°C to +150°C
  • Compliant
  • Ametherm

Ametherm ACW-005

  • Precision interchangeable NTC thermistor
  • Green colour small bead design
  • Resistance of 30kΩ (at 25°C)
  • Tolerance of ±0.2°C
  • Maximum power rating of 250mW
  • Temperature range from -40°C to +150°C
  • Compliant
  • Ametherm

Ametherm ACW-006

  • Precision interchangeable NTC thermistor
  • Blue coloured small bead design
  • Resistance of 50kΩ (at 25°C)
  • Tolerance of ±0.2°C
  • Maximum power rating of 250mW
  • Temperature range from -40°C to +150°C
  • Compliant
  • Ametherm

Ametherm ACW-007

  • Precision interchangeable NTC thermistor
  • Violet coloured small bead design
  • Resistance of 100kΩ (at 25°C)
  • Tolerance of ±0.2°C
  • Maximum power rating of 250mW
  • Temperature range from -40°C to +150°C
  • Compliant
  • Caddock

Caddock CC2015FC Series

  • Current sensing resistor
  • Resistance range from 0.02Ω to 10Ω
  • Tolerance from ±1.0% to ±5.0%
  • TCR of -20 to +80, 0 to +200 or +300 ppm/°C
  • Power rating of 1W at 70°C
  • Temperature range from -55°C to +150°C
  • Exempt
  • Caddock

Caddock MG -15 Range

  • Cylindrical high voltage axial leaded resistor
  • Maximum operating voltage from 960V up to 48kV *
  • Resistance values from 6.5MΩ up to 2GΩ *
  • Tolerances of ±1% and ±5%
  • TCR as tight as ±80 ppm/°C from -15°C to +105°C
  • Maximum power rating from 0.5W up to 15W *
  • Operating Temperature Range of -55°C to +225°C
* Dependant on selected resistor model
  • Exempt
  • Caddock

Caddock MG Extended Range

  • Cylindrical high voltage axial leaded resistor
  • Maximum operating voltage from 2kV up to 30kV *
  • Resistance values from 600Ω up to 10GΩ *
  • Tolerances of ±1% and ±5%
  • TCR as tight as ±80 ppm/°C from +25°C to +105°C
  • Operating Temperature Range of -55°C to +225°C
  • Maximum power rating from 1.5W up to 15W *
* Dependant on selected resistor model
  • Exempt
  • Caddock

Caddock TF020 Series

  • Ultra-precision film through-hole resistor
  • Radial or axial leaded variants available
  • Maximum working voltage of 300V
  • Constructed with Caddock’s Tetrinox® resistance films
  • Long term stability to 0.01% per 1,000 hours
  • Storage temperature range from -55°C up to +105°C
  • Exempt
  • Caddock

Caddock TF050 Series

  • Ultra-precision film through-hole resistor
  • Radial or axial leaded variants available
  • Maximum working voltage of 1.4kV
  • Constructed with Caddock’s Tetrinox® resistance films
  • Long term stability to 0.01% per 1,000 hours
  • Storage temperature range from -55°C up to +105°C
  • Exempt
  • Caddock

Caddock TF626 Series

  • Ultra-precision film through-hole resistor
  • Radial or axial leaded variants available
  • Maximum working voltage of 300V
  • Constructed with Caddock’s Tetrinox® resistance films
  • Long term stability to 0.01% per 1,000 hours
  • Storage temperature range from -55°C up to +105°C
  • Exempt
  • Caddock

Caddock TF656 Series

  • Ultra-precision film through-hole resistor
  • Radial or axial leaded variants available
  • Maximum working voltage of 1.4kV
  • Constructed with Caddock’s Tetrinox® resistance films
  • Long term stability to 0.01% per 1,000 hours
  • Storage temperature range from -55°C up to +105°C
  • Exempt

Caddock HVD Series

  • Ultra-precision through-hole high voltage divider
  • 6 standard models of the HVD series
  • Monolithic voltage dividers built with ceramic sandwich construction
  • Ratios (RT:R2) of 100:1 or 1,000:1
  • Ideal for high performance voltage division applications in medical equipment, laboratory equipment and analytical instruments
  • Over voltage of 1.5 times rated voltage for 5s

Caddock MG Standard Range

  • Cylindrical high voltage axial leaded resistor
  • Maximum operating voltage from 600V up to 30kV *
  • Resistance values from 200Ω up to 2GΩ *
  • Tolerances of ±0.1%, ±0.25%, ±0.5% and ±1%
  • TCR as tight as ±80 ppm/°C from -15°C to +105°C
  • Maximum power rating from 0.5W up to 15W *
  • Operating Temperature Range of -55°C to +225°C
* Dependant on selected resistor model

Ametherm ACC-001

  • Precision interchangeable NTC thermistor
  • Brown coloured small bead design
  • Resistance of 2.252kΩ (at 25°C)
  • Tolerance of ±0.2°C
  • Maximum power rating of 250mW
  • Temperature range from -40°C to +150°C

Ametherm ACC-002

  • Precision interchangeable NTC thermistor
  • Red coloured small bead design
  • Resistance of 3kΩ (at 25°C)
  • Tolerance of ±0.2°C
  • Maximum power rating of 250mW
  • Temperature range from -40°C to +150°C

Ametherm ACC-003

  • Precision interchangeable NTC thermistor
  • Orange coloured small bead design
  • Resistance of 5kΩ (at 25°C)
  • Tolerance of ±0.2°C
  • Maximum power rating of 250mW
  • Temperature range from -40°C to +150°C

Ametherm ACC-004

  • Precision interchangeable NTC thermistor
  • Yellow coloured small bead design
  • Resistance of 10kΩ (at 25°C)
  • Tolerance of ±0.2°C
  • Maximum power rating of 250mW
  • Yellow colour code
  • Temperature range from -40°C to +150°C

Ametherm ACW-005

  • Precision interchangeable NTC thermistor
  • Green colour small bead design
  • Resistance of 30kΩ (at 25°C)
  • Tolerance of ±0.2°C
  • Maximum power rating of 250mW
  • Temperature range from -40°C to +150°C

Ametherm ACW-006

  • Precision interchangeable NTC thermistor
  • Blue coloured small bead design
  • Resistance of 50kΩ (at 25°C)
  • Tolerance of ±0.2°C
  • Maximum power rating of 250mW
  • Temperature range from -40°C to +150°C

Ametherm ACW-007

  • Precision interchangeable NTC thermistor
  • Violet coloured small bead design
  • Resistance of 100kΩ (at 25°C)
  • Tolerance of ±0.2°C
  • Maximum power rating of 250mW
  • Temperature range from -40°C to +150°C

Caddock CC2015FC Series

  • Current sensing resistor
  • Resistance range from 0.02Ω to 10Ω
  • Tolerance from ±1.0% to ±5.0%
  • TCR of -20 to +80, 0 to +200 or +300 ppm/°C
  • Power rating of 1W at 70°C
  • Temperature range from -55°C to +150°C

Caddock MG -15 Range

  • Cylindrical high voltage axial leaded resistor
  • Maximum operating voltage from 960V up to 48kV *
  • Resistance values from 6.5MΩ up to 2GΩ *
  • Tolerances of ±1% and ±5%
  • TCR as tight as ±80 ppm/°C from -15°C to +105°C
  • Maximum power rating from 0.5W up to 15W *
  • Operating Temperature Range of -55°C to +225°C
* Dependant on selected resistor model

Caddock MG Extended Range

  • Cylindrical high voltage axial leaded resistor
  • Maximum operating voltage from 2kV up to 30kV *
  • Resistance values from 600Ω up to 10GΩ *
  • Tolerances of ±1% and ±5%
  • TCR as tight as ±80 ppm/°C from +25°C to +105°C
  • Operating Temperature Range of -55°C to +225°C
  • Maximum power rating from 1.5W up to 15W *
* Dependant on selected resistor model

Caddock TF020 Series

  • Ultra-precision film through-hole resistor
  • Radial or axial leaded variants available
  • Maximum working voltage of 300V
  • Constructed with Caddock’s Tetrinox® resistance films
  • Long term stability to 0.01% per 1,000 hours
  • Storage temperature range from -55°C up to +105°C

Caddock TF050 Series

  • Ultra-precision film through-hole resistor
  • Radial or axial leaded variants available
  • Maximum working voltage of 1.4kV
  • Constructed with Caddock’s Tetrinox® resistance films
  • Long term stability to 0.01% per 1,000 hours
  • Storage temperature range from -55°C up to +105°C

Caddock TF626 Series

  • Ultra-precision film through-hole resistor
  • Radial or axial leaded variants available
  • Maximum working voltage of 300V
  • Constructed with Caddock’s Tetrinox® resistance films
  • Long term stability to 0.01% per 1,000 hours
  • Storage temperature range from -55°C up to +105°C

Caddock TF656 Series

  • Ultra-precision film through-hole resistor
  • Radial or axial leaded variants available
  • Maximum working voltage of 1.4kV
  • Constructed with Caddock’s Tetrinox® resistance films
  • Long term stability to 0.01% per 1,000 hours
  • Storage temperature range from -55°C up to +105°C

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