STMicroelectronics BTA16-800BRG TRIAC, Through Hole, 3-pin 16A to 20A, Gate Trigger 1.3V 800V

The BTA16-800BRG from STMicroelectronics is a highly reliable, rugged triac designed for demanding AC power switching applications. With 16A current handling, 800V blocking voltage, and optimized triggering performance, it is an exceptional choice for motor control, lighting control, and industrial power switching.

Product Overview

The BTA16-800BRG from STMicroelectronics is a medium-power standard triac designed for reliable AC switching and phase control applications. With a 16A average on-state current rating and 800V blocking voltage, this rugged thyristor is ideally suited for motor speed controllers, lighting systems, and industrial power switching. The TO-220AB through-hole package offers excellent thermal dissipation, while UL1557 and RoHS compliance ensures industry-standard safety and environmental compatibility.

Key Features

✅ High Current Handling

• 16A continuous on-state current (IT RMS)
• 168A non-repetitive surge current (ITSMs)

✅ Robust Voltage Ratings

• 800V repetitive peak off-state voltage (VDRM/VRRM)
• 800V repetitive peak reverse voltage (VRRM)

✅ Optimized Triggering Performance

• Low gate trigger current (IGT = 35mA typical, 100mA max)
• 1.55V max on-state voltage (VT)

✅ Reliable Thermal & Switching Performance

• 4Q (snubberless) commutation capability
• -40°C to +125°C operating temperature range
• UL1557 certified (2500VRMS insulated tab version)

✅ Standards Compliance

• RoHS and REACH compliant
• Industrial-grade reliability

Technical Specifications

Electrical Characteristics

Parameter	Value
Repetitive Peak Off-State Voltage (VDRM)	800V
Repetitive Peak Reverse Voltage (VRRM)	800V
On-State Current (IT RMS)	16A (at 110°C case temp)
Gate Trigger Current (IGT)	35mA (typ), 100mA (max)
Gate Trigger Voltage (VGT)	1.3V max
Holding Current (IH)	50mA max
On-State Voltage (VT)	1.55V max
Surge Non-Repetitive Current (ITSMs)	168A

Thermal & Mechanical Specifications

Parameter	Value
Package Type	TO-220AB (3-pin)
Mounting Style	Through-Hole
Terminal Plating	Tin-Lead (solderable)
Dimensions (L×W×H)	10.4mm × 4.6mm × 9.3mm
Max Operating Temperature (Tj)	+125°C
Min Operating Temperature (Tj)	-40°C

Applications

The BTA16-800BRG is ideal for mains-powered AC switching and phase-control circuits, including:

1. Industrial Motor Control

• AC motor speed controllers
• Soft starters for pumps & compressors
• Industrial heater regulation

2. Lighting & Dimming Systems

• Leading/trailing-edge dimmers (incandescent & LED)
• Stage lighting controllers
• Smart lighting automation

3. Appliance & Power Switching

• Static relays for HVAC systems
• Power tools & kitchen equipment
• Solid-state relays (SSRs) replacement

4. Home Automation & Energy Control

• Smart plugs & sockets (Zigbee/Wi-Fi controlled)
• Energy-saving power switches
• Heating control systems (thermostats)

5. Universal AC Load Switching

• Fan speed regulators
• Transformer tap changers
• AC power tools soft-start circuits

Design Advantages

1. Reliable AC Switching Without Snubber Circuits

Unlike standard triacs, the BTA16-800BRG exhibits high commutation (4Q) capability, making it particularly resilient against inductive load turn-off spikes. ✅ Reduces need for RC snubbers in motor & transformer circuits

2. Low Trigger Current for Efficient Control

• 35mA (typical) trigger current enables direct interfacing with microcontrollers and optocoupler drivers.
  • Compatible with MOC3041/MOC3063 optotriacs
  • Easily driven by 3.3V/5V logic signals

3. Excellent Thermal Performance (TO-220AB)

The TO-220AB package provides: ✅ Clip bonding for low thermal resistance (Rth(j-a) ≤ 70°C/W)

• Solderable leads for high-reliability PCBs
• Insulated variant (BTA16-800BW) available for better isolation

4. Industrial Temperature Resilience

With -40°C to +125°C operation, the BTA16-800BRG is suitable for: ✅ Outdoor power equipment

• Freezer/heating system controls
• Rugged industrial automation

5. UL & RoHS Compliance for Global Markets

• UL1557 certified (ref: 81734)
• RoHS & REACH compliant

BTA16 Series Comparison

BTA16-800BRG comparison with alternative parts

Model	VDRM/VRRM	IT(RMS)	Package	Key Feature
BTA16-600B	600V	16A	TO-220AB	Lower voltage, cost-effective
BTA16-800BW	800V	16A	TO-220AB (insulated)	UL-certified safety isolation
BTB16-800BRG	800V	16A	TO-220AB	Non-insulated industrial variant
BTA16-800CW	800V	25A	TO-247	Higher current version

Selection Guide:

• For 230V/400V AC supplies, choose BTA16-800BRG (800V blocking).
• For insulated designs (UL safety), use BTA16-800BW (2500Vrms isolation).
• If higher current (25A) is needed, upgrade to BTA16-800CW (TO-247 package).

Package & Handling Information

• Part Number: BTA16-800BRG
• Package Type: TO-220AB (3-pin)
• Polarity: Bidirectional (T1-T2-MT1-MT2 interchangeable)
• Recommended PCB Footprint: Per TO-220AB standard
• Storage Temperature: -40°C to +150°C

Mounting Guidelines

• Use a heatsink for continuous high-current loads (>8A).
• Avoid excessive mechanical stress on leads.
• Apply thermal paste for improved heat dissipation.