TISP4219M3BJ

Pinout




Specifications

Rating	Symbol	Value	Unit
Repetitive peak off-state voltage, (see Note 1)                                               '4125                                                                                                                          '4219	VDRM	±100 ±180	V
Non-repetitive peak on-state pulse current (see Notes 2 and 3)             2/10 µs (GR-1089-CORE, 2/10 µs voltage wave shape)            8/20 µs (IEC 61000-4-5, 1.2/50 µs voltage, 8/20 current combination wave generator)           10/160 µs (FCC Part 68, 10/160 µs voltage wave shape)           5/200 µs (VDE 0433, 10/700 µs voltage wave shape)           0.2/310 µs (I3124, 0.5/700 µs voltage wave shape)           5/310 µs (ITU-T K.20/21, 10/700 µs voltage wave shape)           5/310 µs (FTZ R12, 10/700 µs voltage wave shape)           10/560 µs (FCC Part 68, 10/560 µs voltage wave shape)           10/1000 µs (GR-1089-CORE, 10/1000 µs voltage wave shape)	ITSP	500 300 250 220 200 200 200 160 100	A
Non-repetitive peak on-state current (see Notes 2, 3 and 4)          20 ms (50 Hz) full sine wave          16.7 ms (60 Hz) full sine wave          1000 s 50 Hz/60 Hz a.c.	ITSM	55 60 2.1	A
Initial rate of rise of on-state current, Exponential current ramp, Maximum ramp value < 200 A	diT/dt	400	A/µs
Junction Temperature	Tj	-40 to +150
Storage Temperature Range	Tstg	-65 to +150

NOTES: 1. See Applications Information for voltage values at lower temperatures.
             2. Initially, the TISP4xxxH3BJ must be in thermal equilibrium with TJ = 25.
             3. The surge may be repeated after the TISP4xxxH3BJ 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. See Figure 10 for the current ratings at other durations.
                 Derate  current values at -0.61 %/ for ambient temperatures above 25.


Description

These TISP4219M3BJ protector pairs have been formulated to limit the peak voltages on the line terminals of the '7581/2/3 LCAS (Line Card Access Switches) type devices. An LCAS may also be referred to as a Solid State Relay, SSR, i.e. a replacement of the conventional electro-mechanical relay.

TISP4219M3BJ Overvoltages are normally caused by a.c. power system or lightning flash disturbances which are induced or conducted on to the telephone line. These overvoltages are initially clipped by protector breakdown clamping until the voltage rises to the breakover level, which causes the device to crowbar into a low-voltage on state. This low voltage on state causes the current resulting from the overvoltage to be safely diverted through the device. For negative surges, the high crowbar holding current prevents d.c. latchup with the SLIC current, as the surge current subsides.

Each protector TISP4219M3BJ consists of a symmetrical voltage-triggered bidirectional thyristor. They are guaranteed to voltage limit and withstand the listed international lightning surges in both polarities.