Part Number: 250R120T
Series: 250R
- Littelfuse PTC 250R Series Data Sheet
- Littelfuse_PTC_250R.pdf
- (390,454 bytes)
- Last Uploaded: August 31, 2011
250R Series - 250V POLYFUSE® Lead-Free Radial Leaded Resettable PPTC for Telecom Protection
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.
Features
Features
- RoHS compliant and lead-free
- Fast time-to-trip
- Binned and sorted narrow resistance ranges available
- 0.08 – 0.18 Hold current range, 60VDC operating voltage
- 250VAC interrupt rating
Electrical Characteristics
| Help | Property | Value |
|---|---|---|
 |
Hold Current (A) | 0.12 |
|
Trip Current (A) | 0.24 |
|
Max Voltage Rating | 250 |
|
Max Fault Current Rating | 3 |
|
Max Power Dissipation (W) | 1 |
|
Minimum Resistance (RIL) (Ohms) | 7 |
|
Typical Resistance (RTYP) (Ohms) | 12 |
|
Max Resistance (R1max) (Ohms) | 16 |
|
Max Time to Trip Current (A) | 1 |
|
Max Time to Trip Time (Sec) | 1.2 |
|
Operating Temperature (deg C) | -40°C - + 85°C |
ICP RLD 16R 30R 60R 72R 250R 600R.pdf