Taiwan Semiconductor Corporation UG06AH

Overview

UG06AH from Taiwan Semiconductor is an AEC-Q101 qualified ultrafast rectifier diode with 50 V repetitive peak reverse voltage (VRRM), 0.6 A average forward current (IF), and 15 ns reverse recovery time (trr), designed for high-efficiency DC-DC converters in automotive power systems.

For engineers reviewing the UG06AH datasheet, UG06AH pinout, UG06AH application, or UG06AH equivalent, key selection criteria include its TS-1 package thermal performance (RθJL = 28 °C/W), low forward voltage (VF ≤ 0.95 V at 0.6 A), and AEC-Q101 qualification for under-hood switching applications.

Technical Context

The UG06AH employs a single-die silicon PN junction optimized for ultrafast recovery (trr ≤ 15 ns) under IF = 0.5 A / IR = 1.0 A test conditions, enabling high-frequency operation in synchronous rectification and freewheeling paths. Its junction-to-lead thermal resistance of 28 °C/W supports reliable conduction at TJ up to +150 °C.

Designed for automotive-grade reliability, UG06AH meets JESD201 Class 2 whisker resistance and features pure tin-plated leads compliant with J-STD-002 solderability. The cathode band polarity marking and TS-1 molded case (UL 94V-0) ensure mechanical and assembly compatibility in space-constrained power modules.

Key Specifications

Pinout & Package

Package: TS-1 - Surface-mount, single-ended, molded plastic case with gull-wing leads; 0.200 g mass; UL 94V-0 rated compound; cathode indicated by band.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultrafast rectifier applications.

Compared with STTH06S05W and MUR0620CT, UG06AH uniquely combines AEC-Q101 qualification, 15 ns trr, and TS-1 surface-mount compatibility-enabling drop-in replacement in automotive DC-DC layouts without thermal or timing compromise.

Availability

UG06AH is available at Aetrix Electronics and suitable for automotive power management, industrial DC-DC converters, and LED driver freewheeling applications requiring stable component supply and long-term lifecycle support.

Supply support for UG06AH 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 discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power rectifiers, TVS devices, and MOSFETs for industrial and automotive markets.

The UG06x series targets high-reliability, high-frequency power conversion-designed specifically for AEC-Q101-compliant automotive subsystems where ultrafast recovery and thermal robustness are essential.

FAQ

What is the maximum junction temperature rating for UG06AH?

The UG06AH has a maximum junction temperature (TJ) rating of +150 °C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet (Version G2104). This allows sustained operation in under-hood automotive environments when mounted on adequate copper area. Derating begins above TA = 75 °C, and UG06AH maintains full 0.6 A IF capability up to that ambient temperature.

Is UG06AH pin-compatible with other UG06x variants like UG06BH or UG06CH?

Yes, all UG06x devices-including UG06AH, UG06BH, UG06CH, and UG06DH-share identical TS-1 package dimensions, pinout, and thermal characteristics. Only VRRM differs (50 V, 100 V, 150 V, 200 V respectively). UG06AH can be substituted in lower-voltage designs where its 50 V rating suffices, but not vice versa without overvoltage risk.

Does UG06AH require special PCB layout considerations for thermal management?

UG06AH benefits from direct thermal connection of its cathode pad to ≥1 cm² internal or external copper pour, leveraging its RθJL = 28 °C/W. No thermal vias are mandatory, but adding 4–6 thermal vias under the cathode improves RθJA from 97 °C/W toward 60 °C/W. Avoid narrow traces on anode/cathode; minimum 0.5 mm width recommended for 0.6 A routing.

What does the 'H' suffix signify in UG06AH?

The 'H' suffix in UG06AH explicitly denotes AEC-Q101 qualification per Taiwan Semiconductor's ordering nomenclature (G2104 datasheet, Page 3). It confirms full stress testing-including HTOL, temperature cycling, and unbiased HAST-as required for automotive power semiconductors. Non-H variants (e.g., UG06A) lack this qualification and are restricted to industrial use.

How is reverse recovery time (trr) measured for UG06AH?

UG06AH trr = 15 ns is measured under standardized conditions: IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A, using the test circuit shown in Figure 6 of the G2104 datasheet. This reflects actual switching behavior in hard-commutated topologies. Measurement uses 1 MHz sine wave for CJ (9 pF), and pulse widths follow JEDEC standards (PW = 0.3 ms for VF, 30 ms for IR).