250R120-RF Series

PTC 60V/250V POLYFUSE TELECOM .120A

Manufacturer: Littelfuse/Commercial Vehicle Products

Catalog

PTC 60V/250V POLYFUSE TELECOM .120A

Part	Current - Hold (Ih) (Max) [Max]	Time to Trip	Height - Seated (Max) [Max] [z]	Height - Seated (Max) [Max] [z]	Package / Case	Resistance - Post Trip (R1) (Max) [Max]	Current - Trip (It)	Mounting Type	Approval Agency	Resistance - Initial (Ri) (Min) [Min]	Current - Max [Max]	Lead Spacing	Lead Spacing	Voltage - Max	Voltage - Max	Size / Dimension [y]	Size / Dimension [y]	Size / Dimension [x]	Size / Dimension [x]	Operating Temperature [Max]	Operating Temperature [Min]	Type
Littelfuse/Commercial Vehicle Products 250R120-RFZR	120 mA	2.5 s	11 mm	0.433 in	Disc Radial	16 Ohms	240 mA	Through Hole	cURus TUV	6 Ohms	3 A	5.1 mm	0.201 in	60 V	250 V	4.6 mm	0.181 in	6.5 mm	0.256 "	85 °C	-40 °C	Polymeric
Littelfuse/Commercial Vehicle Products 250R120-RFU	120 mA	2.5 s	11 mm	0.433 in	Disc Radial	16 Ohms	240 mA	Through Hole	cURus TUV	6 Ohms	3 A	5.1 mm	0.201 in	60 V	250 V	4.6 mm	0.181 in	6.5 mm	0.256 "	85 °C	-40 °C	Polymeric

Catalog

PTC 60V/250V POLYFUSE TELECOM .120A

Key Features

• 80–180 mA hold current range and 60 V dc operating voltage

• Interrupting rating at 250 V ac

• Fast time–to-trip

• Binned and sorted narrow resistance ranges available

• Lead-free, halogen-free, and RoHS compliant

Description

The 250R Series is designed to protect against short duration high voltage fault currents (power cross or power induction surge) typically found in telecom applications (250Vrms). The series can be used to help telecom networking equipment meet the protection requirements specified in ITU K.20 and K.21.