STMicroelectronics BTA16-600CRG

Overview

BTA16-600CRG from STMicroelectronics is an insulated TO-220AB triac rated for 16 A RMS on-state current and 600 V repetitive peak off-state voltage, with standard 25 mA gate trigger current (IGT) and 2500 VRMS isolation between tab and die. It operates across –40 °C to +125 °C junction temperature and delivers 50 A/µs critical rate of rise of on-state current (dl/dt), enabling robust phase-angle control in AC mains switching applications such as motor speed controllers and static relays.

For engineers reviewing the BTA16-600CRG datasheet, BTA16-600CRG pinout, BTA16-600CRG application, or BTA16-600CRG equivalent, key selection criteria include insulated tab compliance (UL1557), snubberless capability for inductive loads, thermal resistance (Rth(j–c) = 2.1 °C/W), and 4-quadrant triggering compatibility with standard logic-level drivers.

Technical Context

This triac implements a four-quadrant gate-triggered thyristor structure optimized for mains-frequency AC switching. Its insulated TO-220AB package integrates a ceramic pad ensuring 2500 VRMS isolation, while internal design supports high commutation performance without external snubbers in inductive load scenarios.

It features guaranteed IGT ≤ 25 mA at 25 °C and ≤ 50 mA over full temperature range, VGT ≤ 1.3 V, and maintains ≥200 V/µs dV/dt immunity at 125 °C with gate open - critical for reliable turn-off in noisy industrial environments.

Key Specifications

Pinout & Package

Package: TO-220AB Insulated - thermally conductive but electrically isolated tab (ceramic pad), 3-pin through-hole, UL-certified, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triac-based AC switching applications.

Compared with BTB16-600CRG, BTA16-600CRG trades thermal efficiency for certified isolation-ideal for end-product safety certification. Compared with BTA16-600CW, it offers lower gate drive burden but reduced dV/dt immunity, making it suitable for resistive or lightly inductive loads with controlled EMI environments.

Availability

BTA16-600CRG is available at Aetrix Electronics and suitable for motor speed controllers, light dimmers, static relays, and heating regulation systems requiring stable component supply, UL-compliant isolation, and long-term industrial lifecycle support.

Supply support for BTA16-600CRG includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, power, and microcontroller solutions for industrial, automotive, and consumer markets.

The BTA series belongs to ST's high-reliability power discrete portfolio, engineered specifically for mains-connected AC switching applications demanding safety certification, thermal robustness, and snubberless operation in harsh environments.

FAQ

What is the maximum case temperature for continuous 16 A operation?

The BTA16-600CRG supports 16 A RMS continuous current only when case temperature (Tc) is held at or below 86 °C, as specified in Absolute Maximum Ratings Table 1. This limit arises from its insulated TO-220AB package's higher thermal resistance (Rth(j–c) = 2.1 °C/W). Exceeding 86 °C risks exceeding the 125 °C maximum junction temperature, potentially causing thermal runaway or premature failure.

Does BTA16-600CRG require a heat sink in all applications?

Yes - even at nominal 16 A load, power dissipation exceeds 2.5 W (VTM ≈ 1.55 V × 16 A × conduction angle factor), generating significant junction heat. Without a heatsink, ambient-to-junction thermal resistance (Rth(j–a) = 60 °C/W) would cause junction temperature to exceed 125 °C at room ambient. A minimum 10 cm² aluminum heatsink is recommended to maintain Tc ≤ 86 °C under full load.

Can BTA16-600CRG be triggered directly by a 3.3 V MCU GPIO?

No - while VGT is guaranteed ≤ 1.3 V, the gate requires ≥25 mA peak current to ensure reliable turn-on across temperature and manufacturing variation. A 3.3 V MCU GPIO typically sources <20 mA and cannot sustain the required pulse energy. A driver stage (e.g., transistor buffer or optocoupler like MOC3021) is mandatory to deliver compliant gate current without MCU stress or timing jitter.

What does the "C" suffix indicate in BTA16-600CRG?

The "C" denotes standard 4-quadrant sensitivity with IGT ≤ 25 mA at 25 °C (per Figure 16 and Table 8). It distinguishes this variant from "B" (50 mA), "SW" (10 mA logic-level), and "CW" (35 mA Snubberless™). The "RG" suffix indicates tube packaging - not relevant to electrical function but critical for logistics and handling.