250R145U
ObsoleteLITTELFUSE
PTC 60V/250V POLYFUSE TELECOM .145A
250R145U
ObsoleteLITTELFUSE
PTC 60V/250V POLYFUSE TELECOM .145A
Description
General part information
250R145 Series
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.
Technical Specifications
Parameters and characteristics for this part
| Specification | 250R145U |
|---|---|
| Approval Agency | cURus, TUV |
| Current - Hold (Ih) (Max) | 145 mA |
| Current - Max | 3 A |
| Current - Trip (It) | 290 mA |
| Height - Seated (Max) | 0.433 in |
| Lead Spacing | 0.201 in |
| Mounting Type | Through Hole |
| Operating Temperature (Max) | 85 °C |
| Operating Temperature (Min) | -40 °C |
| Package / Case | Disc, Radial |
| Resistance - Initial (Ri) (Min) | 3 Ohms |
| Resistance - Post Trip (R1) (Max) | 14 Ohms |
| Size / Dimension Length | 0.256 in |
| Size / Dimension Width | 0.181 in |
| Time to Trip | 2.5 s |
| Type | Polymeric |
| Voltage - Max | 60 Vpk |
| Voltage - Max (Int) | 250 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
Sign in to see pricing
Create a free account to access distributor pricing data.
CAD
3D models and CAD resources for this part
Documents
Technical documentation and resources