STMicroelectronics TN6050-12PI

Overview

TN6050-12PI from STMicroelectronics is a 60 A, 1200 V standard silicon-controlled rectifier (SCR) in a TOP3 isolated through-hole package, featuring 2.5 kV RMS isolation, UL1557 certification, and ECOPACK®2 compliance. It delivers high dI/dt (100 A/µs) and dV/dt (2000 V/µs) immunity for robust commutation in high-noise industrial power control circuits such as AC/DC voltage-controlled rectifiers and UPS bypass stages.

For engineers reviewing the TN6050-12PI datasheet, TN6050-12PI pinout, TN6050-12PI application, or TN6050-12PI equivalent, key selection criteria include gate trigger current (IGT ≤ 50 mA), junction-to-case thermal resistance (0.70 °C/W), blocking voltage rating (1200 V), isolation voltage (2.5 kV RMS), and UL94-V0 resin compliance - all critical for high-reliability AC line switching and surge-tolerant rectification designs.

Technical Context

This SCR operates as a unidirectional, gate-triggered power switch with latching behavior, requiring only a brief positive gate pulse to initiate conduction until current falls below the holding threshold (IH ≤ 100 mA). Its ceramic-isolated tab enables direct heatsink mounting without additional insulation, supporting high-power dissipation up to 60 A RMS at Tc = 82.2 °C.

The device's static and dynamic robustness is defined by verified parameters: dV/dt immunity ≥ 2000 V/µs at 125 °C, dI/dt capability of 100 A/µs, and low on-state voltage (VTM ≤ 1.75 V at 120 A, 25 °C), enabling efficient conduction with minimal forward loss in phase-controlled rectifiers and soft-start circuits.

Key Specifications

Pinout & Package

The TN6050-12PI uses the TOP3 isolated through-hole package with three terminals: Anode (A), Cathode (K), and Gate (G). The ceramic-insulated metal tab serves as the Anode connection and provides electrical isolation from the heatsink. Mounting torque must not exceed 1.2 N·m.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCR60-12IO1 and Q6060JH4, the TN6050-12PI uniquely combines UL1557-certified 2.5 kV isolation, 2000 V/µs dV/dt, and 0.70 °C/W thermal resistance - making it optimal for safety-critical, high-noise, thermally constrained AC power control where reliability under transient stress is non-negotiable.

Availability

TN6050-12PI is available at Aetrix Electronics and suitable for solar inverter bypass, industrial UPS transfer switching, and AC/DC voltage-controlled rectifiers requiring stable component supply, long lifecycle support, and certified isolation performance.

Supply support for TN6050-12PI 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, MCU, and sensor solutions for industrial, automotive, and consumer markets.

The TN6050-12PI belongs to ST's high-power SCR product line engineered specifically for ruggedized AC line control in renewable energy, uninterruptible power, and industrial heating systems - emphasizing isolation integrity, thermal efficiency, and transient immunity.

FAQ

What is the maximum allowable gate trigger voltage for TN6050-12PI?

The absolute maximum peak positive gate voltage (VGM) is 5 V. Exceeding this risks permanent gate oxide damage. For reliable triggering, apply gate pulses within 1.3 V (VGT max) and ≤ 50 mA (IGT max) under standard test conditions (VD = 12 V, RL = 33 Ω). Pulse width should be ≥ 20 µs to ensure latching.

Can TN6050-12PI be used in DC applications?

Yes - it functions as a unidirectional DC switch once triggered, but requires external circuitry to force current below the holding current (IH ≤ 100 mA) to reset conduction. It is not suitable for pure DC interruption without commutation assistance, unlike GTOs or IGCTs.

What is the recommended mounting torque for the TOP3 isolated package?

The recommended torque is 1.05 N·m, with an absolute maximum of 1.2 N·m. Over-torquing may crack the ceramic isolation layer or deform the metal tab, compromising 2.5 kV RMS isolation and thermal contact. Use a calibrated torque screwdriver and verify flatness of the heatsink surface prior to mounting.

Does TN6050-12PI require a heat sink in all operating conditions?

Yes - at rated 60 A RMS, junction temperature rises rapidly without heatsinking. With Rth(j-c) = 0.70 °C/W and typical VTM ≈ 1.5 V, power dissipation exceeds 90 W, necessitating a heatsink capable of maintaining Tc ≤ 82.2 °C. Derating is required above ambient temperatures of 40 °C or in enclosed enclosures.