STMicroelectronics STTH6112TV2

Overview

STTH6112TV2 from STMicroelectronics is an ultrafast recovery silicon rectifier diode in ISOTOP package, rated for 1200 V repetitive peak reverse voltage, 30 A average forward current per diode (Tc = 70 °C), and 45 ns typical reverse recovery time at 125 °C with dIF/dt = −200 A/µs. It delivers soft recovery, low conduction losses (VF = 1.30 V typ. @ 30 A, 150 °C), and high thermal ruggedness up to 150 °C junction temperature - deployed in industrial motor control freewheeling and high-frequency snubber circuits.

For engineers reviewing the STTH612TV2 datasheet, STTH6112TV2 pinout, STTH6112TV2 application, or STTH6112TV2 equivalent, key selection criteria include verified soft recovery behavior (S = 1.5), insulated package rating (2500 VRMS), low leakage (<150 µA @ 125 °C), dynamic performance under high dIF/dt (up to 500 A/µs), and dual-diode thermal coupling in ISOTOP configuration.

Technical Context

This dual-diode ISOTOP device integrates two independent ultrafast rectifiers sharing a common thermally coupled case. Each diode operates with soft reverse recovery (S factor ≥1.5) and exhibits low stored charge (Qrr < 4.5 µC @ dIF/dt = 200 A/µs, Tj = 125 °C), minimizing EMI and voltage overshoot in hard-switched converters.

Thermal design leverages a low junction-to-case resistance of 1.16 °C/W per diode and coupling resistance of 0.1 °C/W between diodes, enabling balanced power dissipation in parallel or interleaved topologies. The insulated package provides 2500 VRMS isolation and <45 pF capacitance, supporting high-voltage auxiliary functions like bootstrap and demagnetization without creepage compromise.

Key Specifications

Pinout & Package

STTH6112TV2 uses the ISOTOP package - a molded, insulated, dual-diode power module with electrically isolated baseplate (2500 VRMS), UL94 V0 epoxy, and lead-free terminations. Dimensions: 38.0 × 25.3 × 12.0 mm (L × W × H), weight: 27 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast 1200 V diode applications.

Compared with MUR1512CT and VS-25CPH12, STTH6112TV2 uniquely combines dual-diode thermal coupling, 2500 VRMS insulation, and 45 ns trr at full 30 A rating - making it optimal for space-constrained, high-reliability industrial systems requiring integrated isolation and matched dynamic performance.

Availability

STTH6112TV2 is available at Aetrix Electronics and suitable for industrial motor drives, three-phase PFC rectifiers, and IGBT snubber networks requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for STTH6112TV2 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 microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

STTH6112TV2 belongs to ST's high-voltage ultrafast diode product line, engineered specifically for mission-critical industrial power conversion where soft recovery, thermal robustness, and package-level isolation are mandatory design requirements.

FAQ

What is the maximum allowable case temperature for continuous operation?

The datasheet specifies IF(AV) = 30 A at Tc = 70 °C. With Rth(j-c) = 1.16 °C/W per diode and Tj(max) = 150 °C, the maximum sustainable case temperature is 115 °C at 30 A - calculated as Tc = Tj − P × Rth(j-c), where P ≈ 39 W (using VF = 1.30 V). Operation above 115 °C requires derating.

Can STTH6112TV2 be used in parallel with another unit for higher current?

No - STTH6112TV2 is a dual-diode ISOTOP module, not a single-die device. Parallel connection of two STTH6112TV2 units is not recommended due to mismatched thermal coupling and unbalanced current sharing. For >60 A, use ST's STTH1212TV (1200 V, 60 A) or consult ST Application Note AN4152 for multi-module layout guidelines.

Is the ISOTOP package compatible with standard TO-247 heatsinks?

No - ISOTOP has unique mechanical dimensions (38.0 × 25.3 mm footprint) and mounting hole pattern (two 4.2 mm diameter holes on 30.2 mm centerline). It requires dedicated ISOTOP-compatible heatsinks or custom mounting brackets. Standard TO-247 clips or thermal pads will not align or secure properly.

Does STTH6112TV2 support reflow soldering per JEDEC J-STD-020?

Yes - STTH6112TV2 is qualified for lead-free reflow per JEDEC J-STD-020D, with peak temperature ≤260 °C (10 s max). The ECOPACK® marking on the package and inner box label confirms compliance. Reflow profile must respect maximum thermal gradient (≤3 °C/s) to avoid epoxy delamination or bond wire lift.