Leaded Thermistors
Interchangeable Thermistor
PR Series Ultra Precision Interchangeable Thermistors
Description
Littelfuse 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.
Options
•
Non-standard
resistance values
and tolerances
•
Special encapsulants or
probe housings
•
Special lead materials
and lengths
Dimensions
Features
•
High accuracy
•
Fast thermal response
A
TINNED COPPER
ALLOY WIRE
EPOXY
COATING
•
High stability
•
Long life
•
R/T Curve-matched
•
Small size
•
Epoxy encapsulated
B
C
Part Numbering System
PR 10 3 J 2
Dimensions shown in inches.
A
A
30AWG
0.010”
B
AWG
30
(0.010")
0.095”
Max
B
C
Series
Resistance @ 25ºC
Base Value
Multiplier, power of 10
Ex. 103 = 10
Ω
x 10
3
= 10,000
Ω
No Significance
R-T Curve
0.095"
C
1.5"
MAX
Min
1.5”
Min
Ultra Precision PR Series
30 AWG (0.010")
TINNED ALLOY WIRE
EPOXY
COATING
Note:
Not all combinations of Part Number codes are available. Contact Littelfuse for details.
0.095"
MAX
1.5"
MIN
© 2018 Littelfuse, Inc. Revised: February 26, 2018
Specifications are subject to change without notice.
1
littelfuse.com
Leaded Thermistors
Interchangeable Thermistor
PR Series Ultra Precision Interchangeable Thermistors
Specifications
Resistance Accuracy
Ohms
(±°C)
@25°C
0-50°C
Temperature
Coefficient
(% / °C)
@ 25°C
Max.
Beta (K)
0-50°C
Power
Rating
(mW)
Dissipation
Constant,
Nominal
(mW/°C)
Thermal
Time
Constant,
Max. - Still
Air
(seconds)
Thermal
Time
Constant,
Max. - Well
Stirred Oil
(seconds)
Temprature
Rating
(°C)
Storage &
Operation
Temp for Best
L/T Stability
(°C)
Part
Number
R-T
Curve
PR222J2
PR302J2
PR502J2
PR103J2
PR203J2
PR303J2
PR503J2
2252
3000
5000
10000
20000
30000
50000
± 0.05°C
± 0.05°C
± 0.05°C
± 0.05°C
± 0.05°C
± 0.05°C
± 0.05°C
J
J
J
J
J
J
J
-4.4
-4.4
-4.4
-4.4
-4.4
-4.4
-4.4
3892
3892
3892
3892
3892
3892
3892
30
30
30
30
30
30
30
1
1
1
1
1
1
1
10
10
10
10
10
10
10
1
1
1
1
1
1
1
-55 to +80
-55 to +80
-55 to +80
-55 to +80
-55 to +80
-55 to +80
-55 to +80
-55 to +50
-55 to +50
-55 to +50
-55 to +50
-55 to +50
-55 to +50
-55 to +50
Disclaimer Notice
-
Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each
product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at:
www.littelfuse.com/disclaimer-electronics
© 2018 Littelfuse, Inc. Revised: February 26, 2018
Specifications are subject to change without notice.
2
littelfuse.com
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Littelfuse
:
PR103J2 PR503J2 PR303J2 PR222J2 PR502J2 PR302J2 PR203J2
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