U.S. Sensor's precision interchangeable thermistors are low cost, highly accurate, stable devices designed specifically for temperature sensing and control applications. They are particularly suited for uses where their precision interchangeability eliminates the necessity for costly individual circuit calibration.

Features
•	High accuracy	•	Epoxy encapsulated
•	Fast thermal response	•	High stability
•	Low cost	•	Long life
•	Small size	•	R/T Curve-matched
				"PW" & "PX" Series
Options
•	Special lead materials and lengths
•	Special encapsulants or probe housings
•	Non-standard resistance values and tolerances

Specifications				"KW" & "KX" Series  View Photo
•	Thermal time constant: 1 second max. in a well stirred oil bath, 10 seconds max. in still air
•	Dissipation constant: 1 mw/°C
•	Maximum power rating: 30 mw at 25°C derated to 1 mW at 125°C
•	Interchangeability tolerance of ±0.5°C or ±1.0°C from 0-70°C
•	Operating temperature: KW and KX series -80°C to +135°C, PW and PX series -80°C to +150°C

•	Storage and operation temperatures for best long term stability: -80° to +120°C

PRECISION INTERCHANGEABLE THERMISTORS (135°C) ± 0.5°C Accuracy - Insulated Leads Part Number (±0.5°C 0-70°C ) Resistance Ohms @25°C R-T Curve Beta (K) 0-50°C View R-T Chart KW102J2* 1000 J 3890 KW222J2 2252 J 3890 KW302J2 3000 J 3890 KW502J2 5000 J 3890 KW602J2 6000 J 3890 KW103G2 10000 G 3575 KW103J2 10000 J 3890 KW203J2 20000 J 3890 KW303J2 30000 J 3890 KW503J2 50000 J 3890 KW503R2 50000 R 4140 KW104R2 100000 R 4140

* 0.125" maximum diameter over epoxy coating

PRECISION INTERCHANGEABLE THERMISTORS (135°C) ± 1.0°C Accuracy - Insulated Leads Part Number (±1.0°C 0-70°C ) Resistance Ohms @25°C R-T Curve Beta (K) 0-50°C View R-T Chart KX102J2* 1000 J 3890 KX222J2 2252 J 3890 KX302J2 3000 J 3890 KX502J2 5000 J 3890 KX602J2 6000 J 3890 KX103G2 10000 G 3575 KX103J2 10000 J 3890 KX203J2 20000 J 3890 KX303J2 30000 J 3890 KX503J2 50000 J 3890 KX503R2 50000 R 4140 KX104R2 100000 R 4140

* 0.125" maximum diameter over epoxy coating

PRECISION INTERCHANGEABLE THERMISTORS (150°C) ± 0.5°C Accuracy - Bare Leads Part Number (±0.5°C 0-70°C ) Resistance Ohms @25°C R-T Curve Beta (K) 0-50°C View R-T Chart PW102J2* 1000 J 3890 PW222J2 2252 J 3890 PW302J2 3000 J 3890 PW502J2 5000 J 3890 PW602J2 6000 J 3890 PW103G2 10000 G 3575 PW103J2 10000 J 3890 PW203J2 20000 J 3890 PW303J2 30000 J 3890 PW503J2 50000 J 3890 PW503R2 50000 R 4140 PW104R2 100000 R 4140

* 0.125" maximum diameter over epoxy coating

PRECISION INTERCHANGEABLE THERMISTORS (150°C) ± 1.0°C Accuracy - Bare Leads Part Number (±1.0°C 0-70°C ) Resistance Ohms @25°C R-T Curve Beta (K) 0-50°C View R-T Chart PX102J2* 1000 J 3890 PX222J2 2252 J 3890 PX302J2 3000 J 3890 PX502J2 5000 J 3890 PX602J2 6000 J 3890 PX103G2 10000 G 3575 PX103J2 10000 J 3890 PX203J2 20000 J 3890 PX303J2 30000 J 3890 PX503J2 50000 J 3890 PX503R2 50000 R 4140 PX104R2 100000 R 4140

* 0.125" maximum diameter over epoxy coating

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