Description
SCHEMATIC DIAGRAM TRISIL COMPLIES WITH THE FOLLOWING STANDARDS: Peak Surge Voltage (V) Voltage Waveform (µs) Current Waveform (µs) Admissible Ipp (A) Necessary Resistor (Ω) (CCITT) ITU-K20 1000 10/700 5/310 25 - (CCITT) ITU-K17 1500 10/700 5/310 38 - VDE0433 2000 10/700 5/310 50 - VDE0878 2000 1.2/50 1/20 50 - IEC-1000-4-5 level 3 level 4 10/700 1.2/50 5/310 8/20 50 100 - - FCC Part 68, lightning surge type A 1500 800 10/160 10/560 10/160 10/560 75 55 12.5 6.5 FCC Part 68, lightning surge type B 1000 9/720 5/320 25 - BELLCORETR-NWT-001089 First level 2500 1000 2/10 10/1000 2/10 10/1000 150 50 11.5 10 BELLCORETR-NWT-001089 Second level 5000 2/10 2/10 150 11.5 CNET l31-24 1000 0.5/700 0.8/310 25 -  October 1998 - Ed: 9A 1/5

Features
■ F126 The TPA series are TRISIL devices especially designed for protecting sensitive telecommunication equipmentagainstlightning and transient voltages induced by AC power lines. They are available in the F126 axial package. TRISIL devices provide bidirectional protection by crowbar action. Their characteristic response to transient overvoltages makes them particularly suited to protect voltage sensitive telecommunication equipment.