STMicroelectronics TN3015H-6T

Overview

TN3015H-6T from STMicroelectronics is a 600 V, 30 A RMS non-isolated TO-220AB thyristor (SCR) designed for AC line switching and motor control. It features 15 mA gate trigger current (IGT), 1000 V/µs dV/dt immunity at 150 °C junction temperature, and 100 A/µs critical dI/dt rating. Used in motorbike voltage regulators, solid-state relays, and inrush limiting circuits where high thermal robustness and noise immunity are required.

For engineers reviewing the TN3015H-6T datasheet, TN3015H-6T pinout, TN3015H-6T application, or TN3015H-6T equivalent, key selection criteria include verified 600 V repetitive off-state voltage, 30 A RMS current capability at Tc = 127 °C, 150 °C max junction temperature, gate sensitivity (IGT ≤ 15 mA), and TO-220AB mechanical footprint compatibility with industrial heatsink mounting.

Technical Context

This SCR operates in phase-controlled AC switching mode with latching behavior after gate-triggered turn-on. Its 1000 V/µs dV/dt immunity at 150 °C enables reliable operation in noisy industrial environments without false triggering. The 100 A/µs dI/dt rating supports fast turn-on into highly inductive loads like motor windings and heating elements.

Thermal performance is defined by Rth(j–c) = 0.85 °C/W, enabling 30 A RMS conduction at case temperatures up to 127 °C. Gate threshold voltage (VGT ≤ 1.3 V) and holding current (IH ≤ 60 mA) ensure stable conduction under varying load conditions and ambient extremes from –40 °C to +150 °C.

Key Specifications

Pinout & Package

TO-220AB package: non-isolated, single-ended metal tab (anode-connected), 3-pin vertical lead frame with center tab for mechanical mounting and thermal conduction. Tab is electrically connected to anode (A).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BT139-600E and TYN612, TN3015H-6T uniquely delivers 1000 V/µs dV/dt at 150 °C with only 15 mA IGT-enabling compact, noise-resilient designs in motorbike regulators and industrial inrush limiters where both sensitivity and immunity are critical.

Availability

TN3015H-6T is available at Aetrix Electronics and suitable for motorbike voltage regulation, solid-state relay construction, and inrush current limiting circuits requiring stable component supply, long-term industrial lifecycle support, and ECOPACK2-compliant sourcing.

Supply support for TN3015H-6T 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, specializing in power discrete devices, microcontrollers, sensors, and analog ICs for industrial, automotive, and consumer applications.

TN3015H-6T belongs to ST's high-reliability SCR family engineered for ruggedized AC power control-specifically targeting applications demanding high junction temperature tolerance, noise immunity, and robust dI/dt performance in harsh environments.

FAQ

Is TN3015H-6T isolated or non-isolated?

TN3015H-6T uses a non-isolated TO-220AB package where the metal tab is electrically connected to the anode. This requires careful PCB layout and heatsink insulation when mounting to grounded chassis. Isolation must be implemented externally via insulating washers or ceramic pads.

What is the maximum gate power dissipation at 150 °C?

The maximum average gate power dissipation (PG(AV)) is 1 W at Tj = 150 °C. Gate drive circuits must limit average power to ≤1 W-typically achieved using current-limited pulses (e.g., 15 mA × 1.3 V × 100 Hz ≤ 0.2 W) to avoid thermal overstress.

Can TN3015H-6T replace a triac in AC dimming applications?

No-TN3015H-6T is a unidirectional SCR and conducts only during one half-cycle of AC. For full-wave phase control (e.g., lamp dimming), a bidirectional triac or back-to-back SCRs are required. This part is intended for half-wave or DC-biased AC switching.

What is the recommended mounting torque for the TO-220AB tab?

The manufacturer specifies a mounting torque of 0.4 to 0.6 N·m for the TO-220AB screw. Exceeding 0.6 N·m risks cracking the package or deforming leads; insufficient torque (>0.4 N·m) increases thermal resistance and may cause premature thermal failure at rated current.