STMicroelectronics TN3015H-6G

Overview

TN3015H-6G from STMicroelectronics is a 600 V, 30 A RMS D²PAK-packaged SCR designed for high-temperature AC line switching and crowbar protection. It features 15 mA gate trigger current (IGT), 1000 V/µs dV/dt immunity at 150 °C, and 100 A/µs critical dI/dt rating. Its thermal robustness enables compact motorbike voltage regulator and inrush limiting circuits.

For engineers reviewing the TN3015H-6G datasheet, TN3015H-6G pinout, TN3015H-6G application, or TN3015H-6G equivalent, key selection criteria include junction temperature derating (Tj = 150 °C), gate sensitivity (IGT = 15 mA), off-state voltage rating (VDRM = 600 V), turn-on surge capability (ITSM = 295 A), and thermal resistance (Rth(j–c) = 0.85 °C/W).

Technical Context

This SCR operates as a latching unidirectional switch triggered by gate current, with conduction initiated only during positive half-cycles of AC waveforms. Its 150 °C maximum junction temperature and 0.85 °C/W junction-to-case thermal resistance support sustained 30 A RMS operation under forced cooling at Tc = 127 °C.

The device exhibits high noise immunity (dV/dt ≥ 1000 V/µs at Tj = 150 °C) while maintaining low gate drive requirements (IGT ≤ 15 mA), enabling direct microcontroller interface without external amplification in motor control and solid-state relay designs.

Key Specifications

Pinout & Package

The TN3015H-6G uses the D²PAK (TO-263) surface-mount package with three terminals: anode (A), cathode (K), and gate (G). The metal tab is electrically connected to the anode and serves as primary thermal path to PCB copper.

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 STTH30L06D, the TN3015H-6G uniquely combines 30 A RMS rating, 150 °C operation, and 1000 V/µs dV/dt-making it optimal for high-reliability, high-temperature, unidirectional AC line protection and regulation where gate drive simplicity and thermal headroom are critical.

Availability

TN3015H-6G is available at Aetrix Electronics and suitable for motorbike voltage regulation, inrush current limiting, and solid-state relay designs requiring stable component supply across automotive aftermarket, industrial controls, and appliance manufacturing.

Supply support for TN3015H-6G 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 devices, microcontrollers, sensors, and analog ICs for industrial, automotive, and consumer markets.

The TN3015H-6G belongs to ST's high-temperature SCR product line, engineered specifically for ruggedized AC line control in thermally demanding environments such as vehicle electrical systems and industrial power modules.

FAQ

What is the maximum allowable case temperature for continuous 30 A RMS operation?

The TN3015H-6G sustains 30 A RMS only when case temperature (Tc) is held at or below 127 °C, as specified in Table 1. Exceeding this requires derating per Figure 2; at Tc = 134 °C, IT(AV) drops to 15 A. Thermal design must ensure Rth(j–c) ≤ 0.85 °C/W and adequate copper area under the tab.

Can TN3015H-6G be triggered directly by a 3.3 V microcontroller GPIO?

No-its maximum gate trigger current is 15 mA at 1.3 V VGT, but minimum IGT is 6 mA. A 3.3 V GPIO cannot reliably source 6–15 mA into the gate without exceeding safe VGT or risking latch-up. A discrete transistor driver or dedicated gate driver IC is required for robust triggering.

Is a snubber circuit required for TN3015H-6G in 240 VAC motor control?

Not typically-its 1000 V/µs dV/dt rating at 150 °C provides sufficient noise immunity for most 240 VAC inductive loads. Snubbers may still be needed only in exceptionally noisy environments (e.g., adjacent to contactors or VFDs) or where rapid load disconnection causes high dv/dt transients exceeding 402 V.

How does ECOPACK2 compliance affect PCB assembly for TN3015H-6G?

ECOPACK2 compliance means the D²PAK package uses halogen-free molding compound and lead-free terminations, fully compatible with standard lead-free reflow profiles (J-STD-020). No special stencil or profile adjustments are needed beyond typical Class 3 SMT guidelines; recommended footprint matches Figure 14 in DS13026.