THERMISTORS
Standard Interchangeable & Point-Matched Series
Features:
Usuable at temperatures from -50C to 125C
Interchangeable tolerances available as tight as 0.10C
Point-Matched tolerances available as tight as 1%
Durable, easy to handle
Proven stability and quality
Specifications:
Available in Beta 0/50 Values of 3889, 3809, 3571,4137, and
3401. (See Resistance/Temperature Charts A, B, C, D, and K)
Tolerances:
Interchangeable: 0.10C, 0.20C, 0.50C, & 1.00C
Interchangeable thermistors have tight tolerances
Available over Temperature Range of -20C to 100C
guaranteed to track a specific resistance temperature
depending on tolerance (See Chart Below)
(R/T) curve over a temperature range.
Point Matched: 1.0%, 2%, 5%, & 10%
Point Matched thermistors are tested at a given
Dissipation constant:
temperature and guaranteed to be within a specified
2mW/ C in still air
percentage of the nominal resistance at that
13mW/ C in stirred oil
temperature.
Thermal time constant: 0.75 sec. typical in stirred oil
0.095"
Thermistor coating: Epoxy, 0.095" max. O. D. typical
Typ
Lead Materials: Uninsulated tinned copper, AWG 30
2.00" Typ
(Other sensor configurations & specifications available upon request)
ALPHA TECHNICS THERMISTOR PART NUMBERING SYSTEM
Tolearnce:
A 1.0 C
XX A XXXX - AX B 0.5 C
Tolerance Suffix
C 0.2 C
(See detailed explanation)
D 0.1 C
Lead Type and Coating Material
Temperature Range:
Example: 14A1002 - C3
Resistance @ 25C
1 +20 C to 45 C
(First 3 digits significant; 14 = AWG 30, tinned copper, epoxy coating
2 -20 C to 50 C
R/T Curve
= Numerical characters
A = Curve A 3 0 C to 70 C
(Refer to ratio tables)
4th digit = # of zeros to follow)
= Alphanumerical characters
1002 = 10,000 Ohms @ 25C 4 0 C to 100 C
8 0 C to 50 C
C3 = 0.2C from 0C to 70C
Tolerance
Part Number Resistance in OHMS @ 25C R/T Curve Beta 0/50
14A1002-C3 10,000 A 3889 0.2C 0 to 70C
14B3002-1 30,000 B 3809 1% @ 25C
14C1002-B4 10,000 C 3571 0.5C 0 to 100C
14D2002-2 20,000 D 4137 2% @25C
14K2001-A8 2000 K 3401 1.0C 0 to 50C
14A2251-5 2252 A 3889 5% @25C
Alpha Technics
2121 Palomar Airport Road Suite 202 1560 Orangethorpe Way
Carlsbad, CA 92009 Anaheim, CA 92801
www.alphatechnics.com
-6-
760-930-4660 760-930-4315 (fax) 714-578-9205 714-773-9327 (fax)