STMicroelectronics TN3015H-6I

Overview

TN3015H-6I from STMicroelectronics is a 600 V, 30 A RMS insulated-packaged SCR (silicon-controlled rectifier) designed for high-temperature AC line switching in motorbike voltage regulators, solid-state relays, and inrush current limiting circuits. It features Tj = 150 °C operation, dV/dt immunity of 1000 V/µs at 150 °C, gate trigger current IGT = 15 mA, and critical dI/dt rating of 100 A/µs.

For engineers reviewing the TN3015H-6I datasheet, TN3015H-6I pinout, TN3015H-6I application, or TN3015H-6I equivalent, key selection criteria include insulated TO-220AB package (2500 VRMS isolation), high thermal robustness (Rth(j-c) ≤ 1.9 °C/W), and validated noise immunity under industrial temperature stress.

Technical Context

This SCR operates as a latching unidirectional power switch in phase-controlled AC circuits. Its 150 °C maximum junction temperature enables sustained 30 A RMS conduction at elevated case temperatures (Tc = 96 °C), while its 1000 V/µs dV/dt rating ensures reliable turn-on immunity against fast transients in noisy motor control and regulator environments.

The device uses standard gate-triggered thyristor physics with defined latching (IL ≤ 75 mA) and holding (IH ≤ 60 mA) currents, and exhibits low on-state voltage (VTM ≤ 1.6 V at 60 A, 25 °C) and dynamic resistance (RD ≤ 14 mΩ at 150 °C), supporting efficient power handling in compact thermal designs.

Key Specifications

Pinout & Package

Package: TO-220AB insulated - molded thermoset housing with internal insulation barrier; UL 1557 certified (File E81734); 2500 VRMS isolation; lead-free, halogen-free, ECOPACK2 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with Littelfuse S4006L and ON Semi 2N6508, TN3015H-6I uniquely combines 2500 VRMS insulation, 150 °C junction rating, and 1000 V/µs dV/dt - enabling direct-mount, high-reliability AC switching in space-constrained, thermally aggressive, and EMI-heavy environments without added isolation components or derating.

Availability

TN3015H-6I is available at Aetrix Electronics and suitable for motorbike voltage regulator circuits, solid-state relays, and inrush current limiting circuits requiring stable component supply, long-term lifecycle support, and certified insulation performance.

Supply support for TN3015H-6I 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, digital, and mixed-signal ICs for automotive, industrial, and power applications.

TN3015H-6I belongs to ST's high-temperature, insulated SCR product line targeting ruggedized AC power control in transportation, appliance, and industrial equipment where reliability under thermal and electrical stress is critical.

FAQ

What is the maximum continuous case temperature for TN3015H-6I at 30 A RMS?

The datasheet specifies IT(RMS) = 30 A at Tc = 96 °C - this is the highest case temperature at which the device sustains full rated RMS current without exceeding its 150 °C junction limit. Operation above 96 °C requires linear current derating per Figure 2 in DS12967.

Can TN3015H-6I be used in DC circuits?

No - TN3015H-6I is a standard SCR (not a GTO or ASR), requiring natural or forced current zero-crossing to commutate. It cannot block reverse voltage or self-commutate in pure DC; use only in AC or pulsed applications where load current falls to zero each half-cycle.

Is external gate resistor required for reliable triggering?

Yes - a series gate resistor (typically 100–470 Ω) is mandatory to limit peak gate current (IGM = 4 A) and prevent damage during triggering. The resistor also damps parasitic oscillation and improves dV/dt immunity when combined with a small gate-cathode capacitor (e.g., 100 pF).

Does the insulated TO-220AB package require thermal grease when mounted to a heatsink?

Yes - despite insulation, the metal tab remains thermally conductive. Thermal interface material (e.g., silicone grease or phase-change pad) is required between the tab and heatsink to minimize Rth(j-c) and ensure the 1.9 °C/W rating is achieved; mechanical torque must be 0.4–0.6 N·m per ST's package specification.