STMicroelectronics TN5015H-8G-TR

Overview

TN5015H-8G from STMicroelectronics is a high-temperature, 50 A RMS, 800 V V_DRM/V_RRM sensitive-gate SCR in D²PAK surface-mount package, designed for robust AC line switching and inrush current limiting in industrial AC/DC converters. It delivers 200 A/µs dI/dt turn-on rise, 1000 V/µs dV/dt immunity at 150 °C, and operates up to T_j = 150 °C with I_GT = 15 mA.

For engineers reviewing the TN5015H-8G datasheet, TN5015H-8G pinout, TN5015H-8G application, or TN5015H-8G equivalent, key selection criteria include gate sensitivity (IGT ≤ 15 mA), thermal performance (R_th(j-c) = 0.6 °C/W), surge rating (I_TSM = 550 A @ 8.3 ms), and ECOPACK2-compliant halogen-free packaging.

Technical Context

This SCR features a sensitive gate structure optimized for low-triggering-current control circuits while maintaining high static noise immunity-critical for reliable operation in noisy industrial environments. Its 1000 V/µs dV/dt rating at 150 °C and 200 A/µs dI/dt capability enable fast, controlled turn-on without false triggering under high dv/dt transients.

The device uses a planar passivated silicon die in a thermally enhanced D²PAK package with copper tab for direct PCB heat sinking. Junction-to-case thermal resistance of 0.6 °C/W supports continuous 50 A RMS conduction at T_c = 122 °C, making it suitable for compact, high-power-density designs where forced air cooling is impractical.

Key Specifications

Pinout & Package

Package: D²PAK (TO-263) surface-mount package with isolated tab (pin 3), standardized for high-current thermal management on FR4 PCBs using ≥2.5 cm² copper area and 70 µm plating thickness.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TN5015H-8Y and S4025L, the TN5015H-8G uniquely combines 50 A RMS capability, 150 °C operation, and SMD packaging-enabling high-current, high-reliability AC switching in modern automated PCB assemblies without heatsinks or through-hole drilling.

Availability

TN5015H-8G is available at Aetrix Electronics and suitable for inrush current limiting in AC/DC converters, solid-state relay replacements in PLC outputs, and heating element control in industrial ovens requiring stable component supply across multi-year production cycles.

Supply support for TN5015H-8G 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 management, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.

TN5015H-8G belongs to ST's high-temperature SCR family, engineered specifically for ruggedized AC line control in harsh thermal environments-prioritizing reliability, surge resilience, and simplified thermal design in industrial power electronics.

FAQ

What is the maximum allowable gate-cathode reverse voltage for TN5015H-8G?

The maximum peak reverse gate voltage (V_RG) is 5 V, as specified in Table 2 of DS14482 Rev 2. Exceeding this value risks permanent gate oxide damage. Gate drive circuits must include reverse-polarity protection-typically a 1N4148 diode in series with the gate resistor-to prevent negative voltage spikes during commutation or noise coupling.

Can TN5015H-8G be used in phase-angle dimming applications?

Yes-its 200 A/µs dI/dt and 1000 V/µs dV/dt ratings support clean, jitter-free phase-controlled conduction. However, gate triggering must occur at precise line-phase angles using zero-crossing referenced timing; gate pulses shorter than 1 µs or with slow rise times (<100 ns) may cause inconsistent turn-on due to I_GT variation with temperature.

What PCB copper area is required to achieve rated 50 A RMS performance?

To sustain 50 A RMS at T_c = 122 °C, ST recommends ≥2.5 cm² of 70 µm-thick copper under the tab (Figure 12, DS14482). Smaller areas increase R_th(j-a) and require derating: e.g., 1 cm² raises R_th(j-a) to ~57 °C/W, limiting continuous current to ~35 A at 40 °C ambient.

Does TN5015H-8G require a snubber circuit in 240 VAC motor control applications?

A snubber is not required for basic resistive or lightly inductive loads due to its 1000 V/µs dV/dt immunity. However, for highly inductive motor windings with rapid current interruption, a RC snubber (e.g., 100 Ω + 100 nF) across anode–cathode is recommended to suppress voltage overshoot exceeding 900 V V_DSM and prevent false turn-on during commutation.