TRF250 Series

Part	Mounting Type	Voltage - Max	Voltage - Max (Int)	Resistance - Initial (Ri) (Min)	Size / Dimension Thickness	Size / Dimension Diameter	Time to Trip	Current - Max	Current - Hold (Ih) (Max)	Resistance - Post Trip (R1) (Max)	Height - Seated (Max)	Lead Spacing	Package / Case	Type	Current - Trip (It)	Operating Temperature (Min)	Operating Temperature (Max)	Size / Dimension Width	Size / Dimension Length	Approval Agency
LITTELFUSE TRF250-055UT	Through Hole	60 Vpk	250 V	15 Ohms	0.15 in	0.189 in	5 s	3 A	55 mA	35 Ohms	0.366 in	0.2 in	Disc Radial	Polymeric	170 mA	-40 °C	85 °C
LITTELFUSE TRF250-145	Through Hole	60 Vpk	250 V	3 Ohms			5 s	3 A	145 mA	14 Ohms	0.433 in	0.197 in	Disc Radial	Polymeric	290 mA	-40 °C	85 °C	0.181 in	0.256 in
LITTELFUSE TRF250-120T-RA-B-0.5	Through Hole	60 Vpk	250 V	7 Ohms			1.2 s	3 A	120 mA	16 Ohms	0.433 in	0.197 in	Disc Radial	Polymeric	240 mA	-40 °C	85 °C	0.181 in	0.256 in	CSA TUV UL
LITTELFUSE TRF250-145ST-B-0.5	Through Hole	60 Vpk	250 V	3 Ohms			2.5 s	3 A	145 mA	14 Ohms	0.433 in	0.197 in	Disc Radial	Polymeric	290 mA	-40 °C	85 °C	0.181 in	0.256 in	CSA TUV UL
LITTELFUSE TRF250-120T-RC-B-0.5	Through Hole	60 Vpk	250 V	5.4 Ohms			3 s	3 A	120 mA	14 Ohms	0.433 in	0.197 in	Disc Radial	Polymeric	260 mA	-40 °C	85 °C	0.181 in	0.256 in
LITTELFUSE TRF250-110U-B-0.5-2	Through Hole	60 Vpk	250 V	5 Ohms	0.15 in	0.209 in	750 ms	3 A	110 mA	16 Ohms	0.37 in	0.197 in	Disc Radial	Polymeric	220 mA	-40 °C	85 °C			CSA TUV UR
LITTELFUSE TRF250-120T-B-0.5	Through Hole	60 Vpk	250 V	7 Ohms			1.2 s	3 A	120 mA	16 Ohms	0.394 in	0.197 in	Disc Radial	Polymeric	240 mA	-40 °C	85 °C	0.15 in	0.236 in	CSA TUV UL

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Create a free account to access distributor pricing data.

3D models and CAD resources for this part

Technical documentation and resources