Dual Programmable Thyristor Transient Voltage Suppressor
This device is especially designed to protect subscriber line card interfaces (SLIC) against transient overvoltages. Positive overloads are clipped with 2 diodes. Negative surges are suppressed by 2 thyristors, their breakdown voltage being referenced to -VBAT through the gate. This component presents a very low gate triggering current (IGT) in order to reduce the current consumption on printed circuit board during the firing phase. A particular attention has been given to the internal wire bonding. The “4-point” configuration ensures reliable protection, eliminating the overvoltage introduced by the parasitic inductances of the wiring (Ldi/dt), especially for very fast transients.
Features
- Dual programmable transient suppressor.
- Wide negative firing voltage range: VGKRM=-167V max.
- Low dynamic switching voltage: VFRM and VGK(BD).
- Low gate triggering current: IGT=5mA max.
- Peak pulse current: IPP=100A for 10/1000μs surge.
- Holding current: IH=150mA min.
Application
- UP61089H is designed to protect communication equipment such as SPC exchanger from being damaged by transient overvoltages at the second level.
