Taiwan Semiconductor Corporation UGF12JDH

Overview

UGF12JDH from Taiwan Semiconductor is an AEC-Q101-qualified ultra-fast recovery rectifier diode in ITO-220AC package, rated for 12A average forward current, 600V repetitive peak reverse voltage, and 100A non-repetitive surge current, with 13ns typical reverse recovery time at IF = 0.5A - deployed in automotive DC/DC converters and high-frequency switching inverters.

For engineers reviewing the UGF12JDH datasheet, UGF12JDH pinout, UGF12JDH application, or UGF12JDH equivalent, key selection criteria include TJ max = 175°C operation, Qrr = 90nC at 125°C, VF = 3.1V @ 12A, trr ≤ 25ns (max), and AEC-Q101 qualification status for under-hood power conversion designs.

Technical Context

This single-die ultra-fast rectifier uses optimized epitaxial structure and lifetime control to achieve low Qrr and fast trr while maintaining high VRRM and thermal robustness. Its 2.4°C/W junction-to-case thermal resistance enables high-power dissipation in compact ITO-220AC mounting configurations.

The device operates across -55°C to +175°C junction temperature range and supports high di/dt conditions without snap-off or secondary breakdown. Reverse leakage remains ≤100µA at 125°C and rated VR, ensuring stable performance in thermally stressed automotive environments.

Key Specifications

Pinout & Package

Package: ITO-220AC - insulated TO-220 variant with electrically isolated tab, matte tin-plated leads, UL 94V-0 molding compound, and 0.56 N·m maximum mounting torque.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH12R06DJF and IXYS MUR1260CT, UGF12JDH uniquely combines AEC-Q101 qualification, 13ns trr, and 90nC Qrr in a single-diode ITO-220AC package - making it the preferred choice for space-constrained, high-frequency automotive power stages where reliability and loss minimization are co-prioritized.

Availability

UGF12JDH is available at Aetrix Electronics and suitable for automotive power conversion, industrial motor drives, and renewable energy inverters requiring stable component supply and long-term lifecycle assurance.

Supply support for UGF12JDH 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and power discrete manufacturer headquartered in Hsinchu, Taiwan, serving global automotive, industrial, and consumer markets since 1979.

The UGF series targets high-reliability power conversion applications, with UGF12JDH specifically engineered to meet AEC-Q101 requirements for ultra-fast rectification in harsh-temperature automotive environments.

FAQ

What does the 'H' suffix in UGF12JDH signify?

The 'H' suffix in UGF12JDH explicitly denotes AEC-Q101 qualification, verified through accelerated stress testing including high-temperature gate bias (HTGB), high-temperature reverse bias (HTRB), and temperature cycling. This distinguishes UGF12JDH from the standard UGF12JD and confirms its suitability for automotive power electronics where reliability under thermal and electrical stress is mandatory. UGF12JDH maintains identical electrical and thermal specs as UGF12JD but adds automotive-grade validation.

Is UGF12JDH pin-compatible with UGF12JD?

Yes, UGF12JDH is fully pin-compatible with UGF12JD - both use the identical ITO-220AC package, share the same lead configuration (anode, cathode, isolated tab), and have identical mechanical dimensions and mounting torque specification (0.56 N·m). The 'H' suffix reflects qualification status only; no physical or electrical changes affect PCB layout or soldering process. UGF12JDH can be used as a drop-in replacement in existing UGF12JD designs requiring AEC-Q101 compliance.

What is the maximum operating frequency supported by UGF12JDH?

UGF12JDH supports switching frequencies up to 1 MHz in practical designs, enabled by its 13ns typical reverse recovery time (trr) and low 90nC reverse recovery charge (Qrr). At 300 kHz, measured turn-off losses remain below 0.4W with proper gate drive and snubbing. Performance beyond 500 kHz depends on circuit layout, dV/dt control, and thermal management - but the device's intrinsic speed makes it suitable for advanced LLC and phase-shifted full-bridge topologies where fast recovery is critical.

How does UGF12JDH perform at elevated junction temperatures?

UGF12JDH maintains stable operation up to TJ = 175°C, with reverse leakage limited to ≤100 µA at 125°C and rated VR, and forward voltage dropping only ~2.5 mV/°C above 25°C. Its RθJC of 2.4°C/W ensures predictable thermal rise under 12A conduction. Derating curves confirm 100% IF capability at TC = 100°C, enabling use in sealed enclosures or near heat sources without active cooling - a key advantage over standard FRDs rated only to 150°C.

Does UGF12JDH require a heatsink in 12A continuous operation?

Yes, UGF12JDH requires a heatsink for 12A continuous operation at ambient temperatures above 40°C. With RθJC = 2.4°C/W and typical VF ≈ 3.1V, power dissipation reaches ~37.2W, resulting in >90°C junction rise above case temperature. A minimum 15 cm² aluminum heatsink (natural convection) or smaller forced-air solution is necessary to maintain TJ ≤ 175°C. Mounting torque must not exceed 0.56 N·m to avoid package damage, and thermal interface material should be applied uniformly to the isolated tab.