Thermometrics NTC Thermistors

Thermometrics Glass Diode NTC Thermistors

Thermometrics Diode Series of Glass-Encapsulated NTC Thermistors consists of a range of NTC chip thermistors in DO-35 style glass package (diode outline) with axial solder-coated copper-clad steel wires. Glass body provides hermetic seal and voltage insulation and excellent stability. Designed for accurate temperature measurement, control and compensation in various applications, including automotive, telecom, HVAC and white goods. Also for use in temperature sensing for household appliances, such as rice cookers, electronic ranges and ovens, and industrial products, such as pharmaceuticals, chemicals, and components.

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Applications

Automotive, telecom, HVAC and white goods applications

Temperature sensing for household appliances, such as rice cookers, electronic ranges and ovens

Temperature sensing for industrial products, such as pharmaceuticals, chemicals, and components

Features

DO-35 style glass package (diode outline) with axial solder-coated copper-clad steel wires
Designed for accurate temperature measurement, control and compensation
Tight tolerances on resistance and B value
Operation up to 482°F (250°C) with excellent stability
Glass body provides hermetic seal and voltage insulation and excellent stability
Designed for cost effective solid state sensor
Resistant to corrosive atmospheres and harsh environments
Lead wires metallurgically bonded to thermistor element for improved reliability (Type GE only)
Available on axial bandolier to IEC-286-1/EIA-468A and packet taped to EIA RS-481 for MELF
Also available loose-packed with axial, radial and SMD wire forms

Type DK

Type DK:
Chip thermistor in DO-35 glass package.

Specifications:
Operating Temperature	-40°F to 482°F (-40°C to 250°C)
Thermal Time Constant	7 seconds (cooling in air)
Dissipation Factor	3.0 mW/K
Mass	0.2 g
Options: Other resistance values (See datasheet.) Other reference temperatures in the range 0°F to 302°F (-18°C to 150°C) Operation to 572°F (300°C) (no solder coating on wires) Wire lengths 0.16 in to 1.26 in (4 mm to 32 mm) ±0.04 in (±1 mm) for DK-N; up to 1.02 in (26 mm) for DK-H

Type DKM

Type DKM:
Glass encapsulated SMD thermistor.

Specifications:
Operating Temperature	-40°F to 482°F (-40°C to 250°C)
Thermal Time Constant	7 seconds (cooling in air)
Dissipation Factor	3.0 mW/K
Mass	0.2 g
Options: Other resistance values (See datasheet.) Other reference temperatures in the range 32°F to 302°F (0°C to 150°C) Operation to 572°F (300°C) (no solder coating on wires)

Type GE

Type GE:
Glass encapsulated DO-35 package. Lead wires metallurgically bonded to thermistor element for improved reliability.

Specifications:
Operating Range	-58°F to 400°F (-50°C to 204°C)
Time Constant	7 seconds
Dissipation Factor	3.0 mW/K
Standard Resistance Tolerance	±10% @ 77°F (25°C)
Options: For reel taping Nickel leads for welding Other resistances in the range 250 Ω to 5 MΩ Other tolerances at other temperatures Alternative lead lengths and materials Can be expanded to 572°F (300°C) with nickel leads

Type MELF

Type MELF:
Hermetically-sealed, glass encapsulated thermistor in SOD-80 SMD package.

Specifications:
Operating Range	-58°F to 400°F (-50°C to 204°C)
Time Constant	7 seconds
Dissipation Constant	3.0 mW/K
Standard Resistance Tolerance	±10% @ 77°F (25°C)
Options: Pocket taping Other resistances in the range 250 Ω to 5 MΩ Other tolerances at other temperatures

Type TH

Type TH:
Glass encapsulated radial lead thermistor.

Specifications:
Operating Temp Range	-40°F to 482°F (-40°C to 250°C)
Time Constant	25 seconds (in still air)
Dissipation Factor	25 mW/K (in still air)
Standard Resistance Tolerance	±5
Options: For non-standard devices, consult Thermometrics.