TFA88S

Scrs Overview

The TFA88S is a reverse blocking triode thyristor from the TFA8x series, manufactured by Sanken Electric. It features an 800 V peak repetitive off-state voltage (VDRM) and an 8.0 A RMS on-state current. The device operates with a junction temperature range of -40°C to 150°C and includes a 1800 V AC RMS isolation voltage between lead and case. Packaged in a 3-pin SIP (TO-220F), it offers a typical gate trigger current of 7 mA and uniform switching characteristics for half-cycle AC applications.

Scrs Feature Summary

• Provides reliable, uniform switching for half-cycle AC power control applications
• Features increased isolation voltage guaranteed for up to one minute
• Includes improved commutation dv/dt performance compared to other market products
• Utilizes a small fully-molded SIP package designed for heatsink mounting

Scrs Applications

• Motor control for small tools
• Temperature control systems
• Light dimmers
• Electric blankets
• General use switching mode power supplies

Scrs Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm that the specific part number matches the required 800 V rating and TO-220F package type. Check for UL Recognized Component status if safety certification is required for the end application. Ensure storage conditions comply with standard temperature and humidity guidelines to maintain solderability and prevent lead rust.

Scrs Selection Notes

Select this component for AC power control circuits requiring robust thermal dissipation and high isolation voltage. Consider the 8.0 A RMS current rating and 150°C junction temperature limit when designing heat management solutions. Evaluate the 7 mA typical gate trigger current against the driving circuit capabilities. Note that this series is marked as not recommended for new designs; assess alternative components for future projects.

Scrs Part Context

The TFA88S belongs to the TFA8x series of reverse blocking triode thyristors produced by Sanken Electric. These devices are silicon-controlled rectifiers designed for general-purpose electronic equipment. The series emphasizes reliability and long life through its fully-molded construction. Distribution in North America is handled by Allegro MicroSystems, Inc., while manufacturing remains with Sanken Electric Co., Ltd. in Japan.

Scrs Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The datasheet explicitly states that the TFA8x series is 'Not Recommended for New Designs.' Engineers should consult official replacement guides or contact the manufacturer directly for suitable modern alternatives.