TN22-1500T

Scrs Overview

The TN22-1500T is a specialized silicon-controlled rectifier (SCR) designed for fluorescent tube lamp electronic starter circuits. It operates with a high clamping voltage structure ranging from 1200 V to 1500 V and features a low gate triggering current of less than 1.5 mA, enabling direct drive from the line. The device ensures high holding current exceeding 175 mA to provide high energy striking characteristics. These specifications allow the component to work in conjunction with sensitive SCRs to deliver reliable performance and extended lifespan for fluorescent lighting systems.

Scrs Feature Summary

• High clamping voltage structure suitable for demanding starter applications
• Low gate triggering current allows direct line drive without additional amplification
• High holding current ensures sufficient energy for lamp ignition

Scrs Applications

• Fluorescent tube lamp electronic starter circuits
• General purpose AC switching requiring high reliability
• Lighting control systems needing extended component life

Scrs Procurement Notes

Verify the specific suffix '1500T' against official STMicroelectronics documentation to confirm pinout and thermal ratings. Ensure the selected variant matches the required clamping voltage range of 1200 V to 1500 V for your specific circuit design. Cross-reference datasheet revisions to confirm compliance with current environmental standards such as RoHS.

Scrs Selection Notes

Select this component when designing electronic starters that require minimal gate drive power while maintaining high striking energy. The low triggering current simplifies driver circuitry, reducing overall system cost and complexity. Ensure the application demands the specific holding current characteristics provided by this SCR to guarantee reliable lamp ignition under varying temperature conditions.

Scrs Part Context

The TN22 series belongs to STMicroelectronics' portfolio of discrete semiconductors tailored for lighting applications. Unlike general-purpose thyristors, these devices are optimized for the specific electrical stresses found in fluorescent lamp starters. They complement other components like standard SCRs to form complete starter modules, focusing on longevity and consistent performance in residential and commercial lighting fixtures.

Scrs Replacement Considerations

No public confirmed substitute part numbers are available for the TN22-1500T. Designers should consult STMicroelectronics technical support for equivalent alternatives if this specific marking is discontinued or unavailable.