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BTA12-600C TO-220 Snubberless TRIAC 12A 600V AC Switch (5-Pack)
BTA12-600C TO-220 Snubberless TRIAC 12A 600V AC Switch (5-Pack)
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BTA12-600C TO-220 Snubberless TRIAC — 12A / 600V AC Power Switch (5-Pack)
The BTA12-600C is a Snubberless™ TRIAC from STMicroelectronics in a TO-220AB package, rated at 12A RMS and 600V blocking voltage. Its Snubberless design with 500V/μs dV/dt rating eliminates the need for an RC snubber in most inductive load applications, simplifying AC motor control, light dimmer, and solid-state relay designs.
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | BTA12-600C |
| Package | TO-220AB (insulated tab) |
| RMS On-State Current (IT) | 12A |
| Peak Repetitive Voltage (VDRM) | 600V |
| Gate Trigger Current (IGT) | 35mA max (all quadrants) |
| Holding Current (IH) | 35mA typical |
| On-State Voltage (VT) | 1.55V @ 12A |
| dV/dt (Snubberless) | 500V/μs |
| Operating Temperature | −40°C to +125°C |
| Quantity | 5 pieces |
BTA12-600C vs BTA24-600B — Which to Choose?
| Parameter | BTA12-600C | BTA24-600B |
|---|---|---|
| Current Rating | 12A | 24A |
| Max Load Power @ 230V | ~2.5kW | ~5kW |
| Gate Trigger Current | 35mA | 50mA |
| Best For | 1–2kW loads (fans, heaters) | 3–5kW loads (motors, ovens) |
Why Choose BTA12-600C?
- Snubberless Design — 500V/μs dV/dt eliminates RC snubber in most inductive load circuits
- All-Quadrant Triggering — Gate triggers in all four quadrants for flexible control circuit design
- 12A / 600V Rating — Controls loads up to ~2.5kW @ 230V AC
- Insulated TO-220 Tab — Heatsink mounting without electrical isolation pad
- Pack of 5 — Spares for repair stock or multi-channel control systems
Typical Applications
- AC fan speed control (HVAC, industrial ventilation)
- Light dimmer circuits (incandescent, halogen up to 2.5kW)
- Solid-state relay (SSR) output stage
- Heating element power control (water heaters, ovens)
- Soft-start circuits for AC induction motors
- Phase-angle power control with MOC3021/MOC3041 optocoupler
Typical Gate Drive Circuit
Use MOC3021 (random phase) or MOC3041 (zero-cross) optocoupler for isolated gate drive from MCU. Gate resistor: 180Ω–360Ω between optocoupler output and TRIAC gate. Snubberless design: no RC snubber needed for resistive loads; add 100Ω + 10nF for highly inductive loads.
FAQ
Q: Can BTA12-600C control a 230V 1500W heater?
A: Yes — 1500W @ 230V = 6.5A RMS, well within the 12A rating. Use a heatsink rated for ~10W dissipation (VT × IT ≈ 1.55V × 6.5A).
Q: What’s the difference between BTA12-600B and BTA12-600C?
A: The “C” suffix indicates higher dV/dt rating (500V/μs vs 200V/μs for “B”). BTA12-600C is the Snubberless grade; BTA12-600B requires a snubber for inductive loads.
Package Contents
- 5× BTA12-600C TO-220 Snubberless TRIAC
