Thermometrics NTC Thermistors

Application

Low cost temperature measurement, control and compensation
Self-heated applications, such as liquid level sensing or glass flow measurement
Applications where the customer will perform further assembly operations

Features

Fast thermal response times
Rugged glass encapsulation provides hermetic seal and better strain relief than glass-encapsulated bead thermistors
Long term stability
Unaffected by severe environmental exposures, including nuclear radiation
Normal operating/storage temperatures range from -112°F (-80°C) to: 221°F (105°C) for Material system E0, 392°F (200°C) for Material systems A1 through A4, 572°F (300°C) for Material systems A5 through D17
Intermittent operation to 600°C

Specifications: Type BR11 / BR14 / BR16 / BR23

Thermistor Series		BR11	BR14	BR16	BR23
Body Dimensions	Nominal Diameter	0.011 in (0.28 mm)	0.014 in (0.36 mm)	0.016 in (0.41 mm)	0.023 in (0.58 mm)
	Max Diameter	0.012 in (0.30 mm)	0.016 in (0.41 mm)	0.017 in (0.43 mm)	0.025 in (0.63 mm)
	Max Length	0.0242 in (0.610 mm)	0.032 in (0.81 mm)	0.034 in (0.86 mm)	0.056 in (1.46 mm)
Lead Wires	Nominal Diameter	0.0007 in (0.02 mm)	0.0011 in (0.03 mm)	0.0011 in (0.03 mm)	0.002 in (0.05 mm)
	Max Lead Length	0.312 in (7.9 mm)
	Lead Material	Platinum Alloy
	Available Cuts	“K” adjacent or “P” opposite
Thermal Time Constant	Still Air @ 25°C (77°F)	0.8 seconds	1 second	1.2 seconds	1.7 seconds
Thermal Time Constant	Plunge into Water	12 msec	14 msec	16 msec	40 msec
Dissipation Constant	Still Air @ 25°C (77°F)	0.065 mW/°C	0.10 mW/°C	0.12 mW/°C	0.18 mW/°C
Dissipation Constant	Still Water @ 25°C (77°F)	0.33 mW/°C	0.50 mW/°C	0.60 mW/°C	0.90 mW/°C
Power Rating (In Air)	Max Power Rating	0.007 W	0.015 W	0.015 W	0.020 W
	100% Max to:	125°C (257°F)
	Derated to 0% at:	300°C (572°F)
Options	Non-standard resistance tolerances & 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 material, diameter, length, insulation) Solderable or weldable/solderable leads (can be pre-tinned or treated) Calibration & Interchangeable pairs or sets, R-vs-T curve matching Special aging and conditioning for high reliability applications

Specifications: Type BR32 / BR42 / BR55

Thermistor Series		BR32	BR42	BR55
Body Dimensions	Nominal Diameter	0.032 in (0.81 mm)	0.042 in (1.16 mm)	0.055 in (1.41 mm)
	Max Diameter	0.033 in (0.84 mm)	0.046 in (1.2 mm)	0.060 in (1.5 mm)
	Max Length	0.084 in (2.1 mm)	0.095 in (2.4 mm)	0.120 in (3 mm)
Lead Wires	Nominal Diameter	0.003 in (0.08 mm)	0.004 in (0.10 mm)	0.004 in (0.10 mm)
	Max Lead Length	0.312 in (7.9 mm)
	Lead Material	Platinum Alloy
	Available Cuts	“K” adjacent or “P” opposite
Thermal Time Constant	Still Air @ 25°C (77°F)	4.5 seconds	5 seconds	7 seconds
Thermal Time Constant	Plunge into Water	90 msec	140 msec	200 msec
Dissipation Constant	Still Air @ 25°C (77°F)	0.285 mW/°C	0.33 mW/°C	0.5 mW/°C
Dissipation Constant	Still Water @ 25°C (77°F)	1.4 mW/°C	1.65 mW/°C	2.50 mW/°C
Power Rating (In Air)	Max Power Rating	0.035 W	0.042 W	0.050 W
	100% Max to:	150°C (302°F)
	Derated to 0% at:	300°C (572°F)
Options	Non-standard resistance tolerances & 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 material, diameter, length, insulation) Solderable or weldable/solderable leads Calibration & Interchangeable pairs or sets, R-vs-T curve matching Special aging and conditioning for high reliability applications