VS-ST083S08PFN0P

Scrs Overview

The VS-ST083S08PFN0P is an Inverter Grade Thyristor from the Vishay VS-ST083SP Series, housed in a TO-94 (TO-209AC) stud package. It features a single SCR configuration with a maximum average on-state current of 85 A at a case temperature of 85 °C. The device offers repetitive peak voltage ratings of 400 V to 1200 V, specifically 800 V for this model. Key electrical parameters include a maximum peak on-state voltage of 2.15 V and surge current capabilities of 2450 A at 50 Hz or 2560 A at 60 Hz. It operates within a junction temperature range of -40 °C to +125 °C.

Scrs Feature Summary

• Center amplifying gate structure for efficient triggering
• High surge current capability for robust fault handling
• Low thermal impedance design for effective heat dissipation
• Compression bonding technology for reliable mechanical stability

Scrs Applications

• Inverters
• Choppers
• Induction heating systems
• Force-commutated converters

Scrs Procurement Notes

Verify the specific voltage code suffix corresponds to the required 800 V rating. Confirm the 'P' suffix indicates lead-free compliance and 'FN' denotes eyelet terminals. Ensure mounting torque specifications are followed strictly to maintain thermal performance and mechanical integrity. Check for any special dV/dt or tq codes if standard switching characteristics do not meet circuit requirements.

Scrs Selection Notes

Select this component for high-power industrial applications requiring fast turn-off times and high surge tolerance. Consider the 800 V blocking voltage against peak circuit transients. Evaluate thermal management needs based on the 0.195 K/W junction-to-case thermal resistance. Ensure gate drive circuits can supply the required 200 mA DC gate current for reliable triggering under all operating conditions.

Scrs Part Context

This part belongs to the VS-ST083SP series of Inverter Grade Thyristors designed for industrial-level qualification. The series utilizes compression bonding and center amplifying gates to enhance performance. These devices are engineered for demanding power conversion environments where reliability and high current handling are critical.

Scrs Replacement Considerations

Consult official Vishay documentation for direct cross-references. Verify that any substitute maintains the TO-94 package, 800 V rating, and 85 A current capacity. Ensure equivalent thermal and switching characteristics to avoid redesigning cooling or gate drive circuits.

Scrs FAQ

What is the maximum non-repetitive surge current for this thyristor?

The maximum non-repetitive surge current is 2450 A at 50 Hz and 2560 A at 60 Hz for a single half-cycle.

What does the 'FN' suffix indicate in the part number?

The 'FN' suffix indicates that the device has eyelet terminals for both the gate and auxiliary cathode leads.

What is the typical turn-off time range for this device?

The turn-off time (tq) ranges from 10 to 20 μs, depending on the specific test conditions and voltage rating.