TIC126N-S

Scrs Overview

The Bourns TIC126N-S is a silicon controlled rectifier (SCR) from the obsolete TIC126 series, rated for an 800 V repetitive peak off-state voltage and reverse voltage. It supports a continuous on-state current of 12 A at case temperatures up to 70°C and handles a surge current of 100 A. The device features a maximum gate trigger current of 20 mA and operates within a junction-to-case thermal resistance of 2.4 °C/W. Packaged in a TO-220 configuration with three leads, it is designed for applications requiring robust switching capabilities under high-voltage conditions.

Scrs Feature Summary

• Glass passivated wafer construction for enhanced durability
• High surge current capability of 100 A for transient protection
• Robust dv/dt rating of 400 V/µs to prevent false triggering

Scrs Applications

• Industrial motor control systems
• Solid-state relays
• General purpose AC power switching

Scrs Procurement Notes

This component is officially classified as obsolete and is not recommended for new designs. Verification of availability requires checking secondary market distributors or surplus suppliers, as original manufacturer production has ceased. Ensure strict adherence to datasheet specifications regarding derating curves above 70°C case temperature to maintain operational reliability.

Scrs Selection Notes

Select this part only if the specific 800 V blocking voltage and 12 A continuous current ratings align precisely with system requirements. Designers must account for the TO-220 package's thermal characteristics and ensure adequate heat sinking, as performance degrades linearly above 70°C case temperature. Verify that the gate trigger parameters fit the driving circuit constraints.

Scrs Part Context

The TIC126N-S belongs to the broader TIC126 series of silicon controlled rectifiers manufactured by Bourns Inc. This series includes variants with different voltage ratings, such as the TIC126D (400 V), TIC126M (600 V), and TIC126S (700 V). All members share identical current handling and physical packaging specifications, differing primarily in their maximum off-state voltage capabilities.

Scrs Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the series is obsolete, engineers should consult official replacement guides or contact the manufacturer for modern equivalents suitable for new designs.

Scrs FAQ

What is the maximum gate trigger current for the TIC126N-S?

The maximum gate trigger current (IGT) is 20 mA when measured with a pulse width of at least 20 µs.

How does the continuous on-state current change with temperature?

The device supports 12 A at or below 70°C case temperature; above this threshold, the current must be derated linearly to zero at 110°C.

What is the critical rate of rise of off-state voltage (dv/dt)?

The critical rate of rise of off-state voltage is 400 V/µs at a case temperature of 110°C.