Littelfuse 250R
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.| Part No. | 250R |
|---|---|
| Datasheet | 250R Download |
| Manufacturer |  Littelfuse |
| Description | POLYFUSE Resettable PTCs Radial Leaded |
| Buy | Stock & Price |
DESCRIPTION
●FEATURES
● RoHS compliant and lead-free● Fast time-to-trip
● Binned and sorted narrow resistance ranges available
APPLICATIONS
● Customer Premises Equipment (CPE)● Central Office (CO)/ Telecom Centers Agency Approvals AGENCY AGENCY FILE NUMBER E183209 R50082521
● 0.08 – 0.18 Hold current range, 60VDC operating voltage
● 250VAC interrupt rating
● LAN/WAN Equipment
● Access equipment
ELECTRICAL CHARACTERISTICS
I hold (A) 0.08 0.08 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.145 0.145 0.145 0.145 0.18 0.18 C: coated device Part Number I trip (A) 0.16 0.16 0.24 0.24 0.24 0.24 0.24 0.24 0.24 0.24 0.29 0.29 0.29 0.29 0.65 0.65 Vmax Vint / Vop 250/60 250/60 250/60 250/60 250/60 250/60 250/60 250/60 250/60 250/60 250/60 250/60 250/60 250/60 250/60 250/60 I max (A) 3 3 3 3 3 3 3 3 3 3 3 3 3 3 10 10 Pd max. (W) 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1.8 1.8 Maximum Time To Trip Current (A) 0.35 0.35 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Time (Sec.) 3 3 1.5 1.0 0.85 0.7 0.8 0.7 1 1.2 2.5 5 2.5 2.0 21 20...
