The BT138X-800F,127 is a triac manufactured by WeEn Semiconductors. It is designed for general-purpose switching and phase control applications. This device is particularly well-suited for applications requiring high blocking voltage and surge current capabilities.

Applications

• Motor speed controls
• Industrial heating controls
• Lighting controls (dimmers)
• Static switching
• Solid state relays

Features

• High blocking voltage (800V)
• High surge current capability
• Planar passivated for voltage ruggedness and reliability
• High Commutation (dV/dt)
• Sensitive gate triggering

Benefits

• Reliable operation in harsh environments
• Protection against voltage transients and surges
• Simplified control circuitry due to sensitive gate
• Efficient switching performance
• Long service life

Additional Details

The BT138X-800F is housed in a TO-220 package, which provides good thermal performance. The '800' in the part number indicates the blocking voltage of 800V. The 'F' likely denotes a specific gate trigger current range, and the '127' is a packing code and may be lot specific.

The high blocking voltage makes it suitable for applications where the AC mains voltage can fluctuate. The high surge current capability ensures the triac can withstand transient current spikes without damage.

Key Specifications:

• Repetitive Peak Off-State Voltage: 800 V
• On-State RMS Current: Consult Datasheet (Typically 12A)
• Gate Trigger Current (Igt): Consult Datasheet
• Holding Current (Ih): Consult Datasheet
• Package: TO-220