Basics of NTC and PTC Thermistors - Another Teaching Moment
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TRF250-055T

DigiKey Part Number
TRF250-055T-ND
Manufacturer
Littelfuse Inc.
Manufacturer Product Number
TRF250-055T
Description
PTC RESET FUSE 60V 55MA RADIAL
Customer Reference
Detailed Description
Polymeric PTC Resettable Fuse 60V (250V Int) 55 mA Ih Through Hole Radial, Disc
Datasheet
 Datasheet
Product Attributes
Type
Description
Select All
Category
Manufacturer
Littelfuse Inc.
Series
PolySwitch®, TRF250
Packaging
Bulk
Part Status
Active
Type
Polymeric
Voltage - Max
60V (250V Int)
Current - Hold (Ih) (Max)
55 mA
Current - Trip (It)
170 mA
Current - Max
3 A
Time to Trip
3.5 s
Resistance - Initial (Ri) (Min)
15 Ohms
Resistance - Post Trip (R1) (Max)
35 Ohms
Operating Temperature
-40°C ~ 85°C
Ratings
-
Mounting Type
Through Hole
Package / Case
Radial, Disc
Size / Dimension
0.228" Dia x 0.181" T (5.80mm x 4.60mm)
Height - Seated (Max)
0.390" (9.90mm)
Thickness (Max)
-
Lead Spacing
0.197" (5.00mm)
Approval Agency
-
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