STMicroelectronics STTH12003TV1

Overview

STTH12003TV1 from STMicroelectronics is a dual ultra-fast soft-recovery silicon rectifier diode in ISOTOP package, rated for 300 V repetitive peak reverse voltage and 120 A total average forward current (60 A per diode at Tc = 85°C), with 70 ns max reverse recovery time and 1.25 V typical forward voltage at 60 A/25°C - used in telecom power supplies, welding inverters, and high-frequency DC-DC converters.

For engineers reviewing the STTH12003TV1 datasheet, STTH12003TV1 pinout, STTH12003TV1 application, or STTH12003TV1 equivalent, key selection criteria include soft recovery (S-factor ≤ 0.3), low junction-to-case thermal resistance (0.45 °C/W total), insulated 2500 VRMS isolation, and dual-diode layout compatibility with free-wheeling and synchronous rectification topologies.

Technical Context

This dual diode integrates two independent ultra-fast recovery rectifiers sharing a common heatsink-mountable ISOTOP metal base. Each diode features soft reverse recovery (S-factor ≤ 0.3 at 125°C) to minimize EMI in high-dI/dt switching environments, with specified trr ≤ 70 ns at IF = 1 A, dIF/dt = –50 A/µs, and VR = 30 V.

Thermal design is enabled by low Rth(j–c) = 0.45 °C/W (total for both diodes), validated under conduction-cooled mounting with 1.3 N·m screw torque. The insulated package provides 2500 VRMS isolation and < 45 pF inter-terminal capacitance, supporting compact PCB layouts in high-density SMPS designs.

Key Specifications

Pinout & Package

STTH12003TV1 uses the ISOTOP (Insulated Super Top) package: a through-hole, heatsink-mountable metal-base package with integrated electrical isolation, 27 g mass, and UL 94 V0 epoxy. Mounting requires M4 screws torqued to 1.3 N·m (max 1.5 N·m).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-fast dual rectifier applications.

Compared with MBR12030CT and VS-120CT03, STTH12003TV1 uniquely combines 2500 VRMS isolation, 0.45 °C/W thermal resistance, and soft recovery in one package - enabling smaller, safer, and cooler-running high-frequency rectifier stages without added insulation or thermal derating.

Availability

STTH12003TV1 is available at Aetrix Electronics and suitable for telecom power supplies, industrial welding equipment, and high-frequency DC-DC converters requiring stable component supply, long-lifecycle support, and traceable sourcing.

Supply support for STTH12003TV1 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, designing and manufacturing analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.

STTH12003TV1 belongs to ST's high-frequency rectifier product line, engineered specifically for low-loss, low-EMI secondary-side rectification in next-generation switched-mode power supplies and high-efficiency inverters.

FAQ

What is the maximum junction temperature and how is it enforced?

The maximum operating junction temperature is 150°C, validated under continuous conduction with Tc ≤ 85°C and IF(AV) = 60 A per diode. Thermal design must maintain Rth(j–c) ≤ 0.45 °C/W using conduction cooling via the ISOTOP base with proper screw torque (1.3 N·m). Exceeding 150°C risks irreversible degradation of reverse leakage and recovery characteristics.

Can STTH12003TV1 be used in parallel with another unit?

No - STTH12003TV1 is not designed for parallel operation due to inherent parameter spread (e.g., VF mismatch up to ±5% at 60 A). Its dual-diode architecture is intended for independent channel use within one device. For higher current, select a single higher-rated part or redesign with interleaved phases rather than paralleling units.

Does the ISOTOP package require thermal interface material?

No - the ISOTOP package is designed for direct metal-to-metal conduction cooling. Use clean, flat heatsink surfaces and M4 screws torqued to 1.3 N·m. Adding thermal paste or pads degrades thermal performance and violates the qualified mounting method defined in the mechanical data sheet (Ref. STTH12003TV 5/5).

How does soft recovery improve system-level EMI performance?

Soft recovery (S-factor ≤ 0.3) limits di/dt during turn-off, reducing high-frequency spectral content in voltage transients. Measured data (Fig. 6) shows S-factor remains ≤ 0.3 up to 500 A/µs at 125°C, directly suppressing radiated emissions above 30 MHz - a critical advantage in EN 55032-compliant telecom and industrial power supplies.