STMicroelectronics STTH9012TV2

Overview

STTH9012TV2 from STMicroelectronics is an ultrafast recovery silicon rectifier diode in ISOTOP package, rated for 1200 V repetitive peak reverse voltage, 45 A average forward current per diode (Tc = 75 °C), and 50 ns typical reverse recovery time at 125 °C with dIF/dt = −200 A/µs. It delivers soft recovery, low conduction loss (VF = 1.20 V typ. at 150 °C, IF = 45 A), and high junction temperature capability (Tj(max) = 150 °C), making it suitable for industrial motor control freewheeling and snubber circuits.

For engineers reviewing the STTH9012TV2 datasheet, STTH9012TV2 pinout, STTH9012TV2 application, or STTH9012TV2 equivalent, key selection criteria include verified trr ≤ 70 ns under high dIF/dt conditions, insulated package rating (2500 VRMS), and thermal resistance Rth(j–c) = 0.74 °C/W per diode - critical for high-frequency switching power supplies and pulsed-current rectification.

Technical Context

This dual-diode device operates as a single-package, electrically isolated pair optimized for synchronous rectification and bidirectional freewheeling paths. Its ultrafast soft recovery minimizes EMI generation during turn-off, while the 45 pF junction capacitance and low IR (≤300 µA at 125 °C) support stable operation in high-temperature auxiliary power rails.

The ISOTOP package enables direct heatsink mounting with 2500 VRMS isolation between case and terminals, supporting system-level safety compliance without additional insulation barriers. Thermal coupling between diodes is characterized by Rth(c) = 0.1 °C/W, allowing accurate junction temperature estimation when both diodes conduct simultaneously.

Key Specifications

Pinout & Package

The STTH9012TV2 is housed in an ISOTOP package - a thermally enhanced, electrically insulated TO-247 variant with four leads (K1, K2, A1, A2) and metal baseplate for direct heatsink attachment. Package meets UL94 V0 flammability rating and features lead-free second-level interconnect per JEDEC JESD97.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast high-voltage diode applications.

Compared with MUR1520CT and VS-25CPH06, STTH9012TV2 uniquely combines 1200 V rating, dual-diode ISOTOP isolation, and 50 ns trr at 125 °C - enabling single-package solutions for high-reliability 10–50 kW industrial inverters without external insulation or parallel devices.

Availability

STTH9012TV2 is available at Aetrix Electronics and suitable for industrial motor drives, uninterruptible power supplies, and induction heating inverters requiring stable component supply, long-lifecycle support, and traceable sourcing for production programs.

Supply support for STTH9012TV2 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 automotive, industrial, and consumer markets.

The STTH series targets high-reliability industrial power conversion, emphasizing ruggedness, thermal stability, and soft-switching performance in mission-critical rectification and freewheeling roles.

FAQ

What is the maximum allowable case temperature for continuous operation?

The STTH9012TV2 supports continuous operation with case temperature (Tc) up to 75 °C at full IF(AV) = 45 A per diode. At higher case temperatures, derating is required per Figure 1 in the datasheet; at Tc = 100 °C, maximum IF(AV) drops to approximately 32 A to maintain Tj ≤ 150 °C.

Can STTH9012TV2 be used in parallel configurations?

Yes, but only with matched forward voltage characteristics and symmetrical thermal mounting. The low IR (≤300 µA at 125 °C) and tight VF distribution reduce current imbalance risk; however, individual current sharing must be verified using thermal imaging and load testing per application conditions.

Does the ISOTOP package require thermal interface material?

Yes - a thermally conductive, electrically insulating pad or grease (e.g., silicone-based TIM with ≥2.5 W/m·K conductivity) must be applied between the metal baseplate and heatsink to ensure both thermal performance (Rth(j–c) = 0.74 °C/W) and dielectric integrity (2500 VRMS isolation).

Is STTH9012TV2 compliant with RoHS and REACH?

Yes - STTH9012TV2 is manufactured in ST's ECOPACK®-compliant process with lead-free second-level interconnect, fully conforming to EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, as documented in ST's official material declarations.