BT145-800 Thyristor 800V 25A Through Hole TO-220
The BT145-800 is a silicon-controlled rectifier (SCR) thyristor designed for high-voltage and high-current switching applications. It features an 800V repetitive peak off-state voltage capability and can handle substantial load currents, making it suitable for industrial power control circuits, motor drives, heating controllers, and static switching systems. The device is housed in a TO-220 package, allowing easy mounting and efficient heat dissipation.
This thyristor utilizes glass-passivated junction technology to provide reliable performance, excellent thermal cycling endurance, and stable operation in demanding environments. Once triggered through the gate terminal, the device remains conducting until the current drops below the holding current level, making it ideal for phase-angle control and power regulation applications. Typical uses include lighting dimmers, temperature controllers, AC switches, and power conversion equipment.
Features:
- High blocking voltage capability.
- High surge current handling.
- Glass-passivated junction construction.
- Excellent thermal cycling performance.
- Low gate trigger requirements.
- Suitable for AC and DC power control.
- Reliable switching operation.
- Low on-state voltage drop.
- Robust TO-220 package.
- Designed for industrial and consumer power applications.
Specifications:
| Parameter | Value |
|---|---|
| Device Type | Thyristor (SCR) |
| Part Number | BT145-800 |
| Repetitive Peak Off-State Voltage (VDRM) | 800V |
| Repetitive Peak Reverse Voltage (VRRM) | 800V |
| RMS On-State Current (IT(RMS)) | 25A |
| Average On-State Current (IT(AV)) | 16A |
| Non-Repetitive Surge Current (ITSM) | 300A |
| Gate Trigger Current (IGT) | 35mA (Max) |
| Gate Trigger Voltage (VGT) | 1.0V (Max) |
| On-State Voltage (VT) | 1.5V (Max) |
| Operating Junction Temperature | Up to 125°C |
| Storage Temperature Range | -40°C to +150°C |
| Package | TO-220AB |
Pinout:
Applications:
- AC power controllers.
- Motor speed control circuits.
- Light dimmer systems.
- Industrial heating control.
- Static power switches.
- Battery charging equipment.
- Soft-start circuits.
- Power supplies.
- Phase-angle control systems.
- Industrial automation equipment.
Package Included:
- 1x BT145-800 Thyristor 800V 25A Through Hole TO-220.