CYNB25-1200

Overview

The CYNB25-1200 is a silicon controlled rectifier (SCR) manufactured by Sensata-Crydom. It features a maximum off-state voltage of 1.2 kV and an average on-state current rating of 25 A. The device utilizes a TO-220AB package with three terminals. Key electrical specifications include a maximum gate trigger voltage of 1.3 V. The component is classified as obsolete and is not recommended for new designs.

Feature Summary

• High voltage blocking capability up to 1.2 kV
• Robust 25 A average on-state current handling
• Standardized TO-220AB surface-mount compatible package

Applications

• Industrial power control systems
• AC phase control circuits
• Rectifier bridge configurations

Procurement Notes

Verify component obsolescence status before integration into any project. As the part is marked obsolete, confirm availability through authorized distributors or secondary markets. Ensure that existing inventory meets quality standards and that no minimum order quantity restrictions apply to remaining stock. Validate compatibility with current design requirements prior to procurement.

Selection Notes

Consider alternative active components from the same manufacturer series if long-term supply stability is required. Evaluate thermal management requirements based on the 25 A current rating and TO-220AB package characteristics. Verify that the 1.2 kV voltage rating aligns with system peak reverse voltage demands. Check for pinout compatibility when replacing existing circuit layouts.

Part Context

This SCR belongs to the broader Crydom discrete semiconductor portfolio, designed for high-power switching applications. The TO-220AB form factor allows for efficient heat dissipation compared to smaller packages. While the specific model is discontinued, it remains referenced in legacy industrial equipment maintenance and repair scenarios requiring exact replacement parts.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.