BT134 Triac 600V 4A SOT 82

BT134 Triac 600V 4A SOT 82 

The BT134 is a small-to-medium power bidirectional TRIAC designed for AC switching and phase control where space is limited. It has a 600 V repetitive peak off-state voltage and 4 A RMS on-state current rating, making it suitable for controlling low-to-moderate AC loads in consumer and industrial electronics. The device features four-quadrant gate triggering, allowing reliable triggering in all quadrants of the AC waveform. Its SOT-82 (TO-225AA) package provides a compact footprint for PCB mounting without a large heat sink.

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Features

• 600 V repetitive peak off-state voltage — suitable for mains AC systems
• 4 A RMS on-state current rating — handles low-to-moderate AC loads
• Bidirectional conduction — allows control of AC current in both directions
• Four-quadrant gate triggering — dependable triggering across all waveform conditions
• Low gate trigger current requirement — easier drive from low-power circuits
• Compact SOT-82 package — space-saving design for small PCBs
• Good surge current tolerance — resists transient and inrush currents
• Reliable and robust operation — suitable for varied applications

Applications

• Small AC motor control (fans, small blowers)
• Light dimming and heater control circuits
• Low-power solid-state relays and AC switches
• Home appliances (kitchen devices, irons, small tools)
• Industrial control modules
• Phase-angle control in resistive and inductive loads