Thermometrics NTC Thermistors

Thermometrics Type B Glass-Coated Bead Thermistors consists of glass-coated bead thermistors on fine diameter platinum alloy lead wires. The special thin glass coatings provide hermetic seal making these thermistors unaffected by severe environmental exposures. They are suitable for most low cost temperature measurement, control and compensation, such as self-heated applications, including liquid level sensing and gas flow measurement.

Application

Temperature measurement, control and compensation
Self-heated applications, such as gas chromatography, thermal conductivity analysis, liquid level sensing and gas flow measurement

Features

Fast thermal response times
Special thin glass coating provides hermetic seal
Unaffected by severe environmental exposures, including nuclear radiation
Intermittent operation to 600°C

Type B05 / B07 / B10 / B14

Thermistor Series		B05	B07	B10	B14
Body Dimensions	Nominal Diameter	0.005 in (0.13 mm)	0.007 in (0.18 mm)	0.010 in (0.25 mm)	0.014 in (0.36 mm)
	Max Diameter	0.0065 in (0.17 mm)	0.0085 in (0.22 mm)	0.0115 in (0.29 mm)	0.016 in (0.417 mm)
	Max Length	0.012 in (0.30 mm)	0.014 in (0.36 mm)	0.020 in (0.510 mm)	0.030 in (0.76 mm)
Lead Wires	Nominal Diameter	0.0007 in (0.02 mm)	0.0007 in (0.02 mm)	0.0011 in (0.03 mm)	0.0011 in (0.03 mm)
	Max Lead Length	0.312 in (7.9 mm)
	Lead Material	Platinum Alloy
	Available Cuts	“J” adjacent (stubs), “K” adjacent or “P” opposite
Thermal Time Constant	Still Air @ 25°C (77°F)	0.12 seconds	0.23 seconds	0.5 seconds	1 second
Thermal Time Constant	Plunge into Water	5.0 msec	7.0 msec	10 msec	15 msec
Dissipation Constant	Still Air @ 25°C (77°F)	0.045 mW/°C	0.06 mW/°C	0.09 mW/°C	0.10 mW/°C
Dissipation Constant	Still Water @ 25°C (77°F)	0.023 mW/°C	0.3 mW/°C	0.45 mW/°C	0.50 mW/°C
Power Rating (In Air)	Max Power Rating	0.006 W	0.008 W	0.010 W	0.014 W
	100% Max to:	25°C (77°F)
	Derated to 0% at:	200°C (392°F)
Options	Non-standard resistance tolerances & resistance values Reference temperature(s) other than 77°F (25°C) Mounting in special housings or enclosures Longer continuous leads Welded or soldered extension leads (specify lead material, diameter, length, and insulation) Solderable or weldable/solderable leads Calibration & Interchangeable pairs or sets, R-vs-T curve matching Special aging and conditioning for high reliability applications

Type B35 / B43

Thermistor Series		B35	B43
Body Dimensions	Nominal Diameter	0.035 in (0.893 mm)	0.043 in (1.1 mm)
	Max Diameter	0.043 in (1.1 mm)	0.050 in (1.32 mm)
	Max Length	0.075 in (1.9 mm)	0.100 in (2.5 mm)
Lead Wires	Nominal Diameter	0.004 in (0.10 mm)	0.0040 in (0.102 mm)
	Max Lead Length	0.312 in (7.9 mm)
	Lead Material	Platinum Alloy
	Available Cuts	“J” adjacent (stubs), “K” adjacent or “P” opposite
Thermal Time Constant	Still Air @ 25°C (77°F)	4.5 seconds	5.5 seconds
Thermal Time Constant	Plunge into Water	100 msec	140 msec
Dissipation Constant	Still Air @ 25°C (77°F)	0.30 mW/°C	0.35 mW/°C
Dissipation Constant	Still Water @ 25°C (77°F)	1.50 mW/°C	2.00 mW/°C
Power Rating (In Air)	Max Power Rating	0.035 W
	100% Max to:	150°C (302°F)
	Derated to 0% at:	300°C (572°F)
Options	Non-standard resistance tolerances & resistance values Reference temperature(s) other than 77°F (25°C) Mounting in special housings or enclosures Longer continuous leads Welded or soldered extension leads (specify lead material, diameter, length, and insulation) Solderable or weldable/solderable leads Calibration & Interchangeable pairs or sets, R-vs-T curve matching Special aging and conditioning for high reliability applications