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These devices are designed to limit overvoltages on the telephone line. Overvoltages are normally caused by a.c. power system or lightning flash disturbances which are induced or conducted on to the telephone line. A single device provides 2-point protection and is typically used for the protection of 2-wire telecommunication equipment (e.g. between the Ring and Tip wires for telephones and modems). Combinations of devices can be used for multi-point protection (e.g. 3-point protection between Ring, Tip and Ground).
Non-repetitive peak on-state pulse current (see Notes 2, 3 and 4) 2/10 s (GR-1089-CORE, 2/10 s voltage wave shape) 10/160 s (FCC Part 68 (TIA/EIA-IS-968), 10/160 s voltage wave shape) 5/320 s (FCC Part 68 (TIA/EIA-IS-968), 9/720 s voltage wave shape) 5/310 s (ITU-T K.44, 10/700 s voltage wave shape used in K.20/45/21) 10/560 s (FCC Part 68 (TIA/EIA-IS-968), 10/560 s voltage wave shape) 10/1000 s (GR-1089-CORE, 10/1000 s voltage wave shape)
ITSP
250 75 65 65 55 50
A
Non-repetitive peak on-state current (see Notes 2, 3 and 4) 20 ms (50 Hz) full sine wave 1 s (50 Hz) full sine wave 1000 s 50 Hz/60 Hz a.c.
ITSM
18 7 1.6
A
Junction temperature
TJ
-40 to +150
°C
Storage temperature range
Tstg
-65 to +150
°C
NOTES: 1. For voltage values at lower temperatures derate at 0.13 %/°C. 2. Initially, the TISP43xxMM must be in thermal equilibrium with TJ = 25 °C. 3. The surge may be repeated after the TISP43xxMM returns to its initial conditions. 4. EIA/JESD51-2 environment and EIA/JESD51-3 PCB with standard footprint dimensions connected with 5 A rated printed wiring track widths. Derate current values at -0.61 %/°C for ambient temperatures above 25 °C.
TISP4300MMBJ Features
- ITU-T Recommendation K.21 10/700 AC Induction and Contact - FCC Part 68 (TIA/EIA-IS-968) Type A & B Surge - UL 60950 and CSA 22.2 No.60950 Clause 6. Power Cross - Telcordia GR-1089-CORE 2/10 and 10/1000 AC Induction and Contact
TISP4300MMBJ Typical Application
TISP4300MM for: POTS Solid-State Relay Modems Protection Voltage .............................................................. 300 V TISP4350MM for: POTS Electro-mechanical Relay Modems FCC Type B Ringer Voltage ............................................... 275 V TISP4360MM for: ADSL Modems ADSL + Type B Ringer Voltage .......................................... 290 V