Circuit Protection
250R120-RFU
ObsoleteLittelfuse/Commercial Vehicle Products
PTC 60V/250V POLYFUSE TELECOM .120A
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Circuit Protection
250R120-RFU
ObsoleteLittelfuse/Commercial Vehicle Products
PTC 60V/250V POLYFUSE TELECOM .120A
Deep-Dive with AI
Technical Specifications
Parameters and characteristics for this part
| Specification | 250R120-RFU |
|---|---|
| Approval Agency | cURus, TUV |
| Current - Hold (Ih) (Max) [Max] | 120 mA |
| Current - Max [Max] | 3 A |
| Current - Trip (It) | 240 mA |
| Height - Seated (Max) [Max] [z] | 11 mm |
| Height - Seated (Max) [Max] [z] | 0.433 in |
| Lead Spacing | 5.1 mm |
| 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) [Min] | 6 Ohms |
| Resistance - Post Trip (R1) (Max) [Max] | 16 Ohms |
| Size / Dimension [x] | 6.5 mm |
| Size / Dimension [x] | 0.256 " |
| Size / Dimension [y] | 4.6 mm |
| Size / Dimension [y] | 0.181 in |
| Time to Trip | 2.5 s |
| Type | Polymeric |
| Voltage - Max | 60 V |
| Voltage - Max | 250 V |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
Description
General part information
250R120-RF 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.
Documents
Technical documentation and resources
