Taiwan Semiconductor Corporation UG2DH

Overview

UG2DH from Taiwan Semiconductor is an AEC-Q101-qualified 2 A, 200 V ultra-fast recovery rectifier diode in DO-204AC (DO-15) package, featuring 15 ns reverse recovery time at 0.5 A/1.0 A test conditions, 0.95 V max forward voltage at 2 A/25°C, and 80 A surge current capability - deployed in automotive DC-DC converters and switching inverters.

For engineers reviewing the UG2DH datasheet, UG2DH pinout, UG2DH application, or UG2DH equivalent, key selection criteria include AEC-Q101 qualification status, ultra-fast trr ≤25 ns under 2 A/30 V conditions, TJ = −55°C to +150°C operating range, glass-passivated junction reliability, and DO-204AC mechanical compatibility with high-temperature PCB reflow.

Technical Context

The UG2DH is a single-die, planar epitaxial ultra-fast rectifier optimized for high-frequency switching applications. Its design emphasizes low stored charge (Qrr) and minimal reverse recovery tail, enabling reduced switching losses in hard-switched topologies.

It operates with a maximum junction temperature of 150°C and exhibits stable reverse leakage (IR ≤200 µA at 125°C), supported by pure tin-plated leads compliant with J-STD-002 solderability and JESD201 Class 2 whisker resistance.

Key Specifications

Pinout & Package

Package: DO-204AC (DO-15), axial-leaded, glass-passivated, cathode indicated by band. Weight: 0.330 g. Molding compound UL 94V-0 rated.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH2R02DJF and MBR2200LSFT1G, the UG2DH uniquely combines AEC-Q101 qualification, 150°C junction rating, and DO-204AC form factor - making it the only drop-in solution for space-constrained automotive converters needing full temperature compliance.

Availability

UG2DH is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial switching mode power supplies, and motor drive freewheeling applications requiring stable component supply with AEC-Q101 assurance and long-lifecycle availability.

Supply support for UG2DH 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, serving automotive, industrial, and consumer markets since 1979.

The UG2D series targets high-reliability power conversion, with UG2DH specifically engineered for AEC-Q101-compliant ultra-fast rectification in compact axial packages - addressing demand for robust, high-temperature diodes in next-generation vehicle electrification systems.

FAQ

Is UG2DH pin-compatible with standard DO-204AC rectifiers like 1N4007?

Yes, UG2DH uses the DO-204AC (DO-15) package with axial leads and cathode band marking identical to 1N4007. However, UG2DH is not a functional replacement due to its ultra-fast recovery (15 ns trr vs. ~2 µs for 1N4007) and higher VRRM (200 V vs. 1000 V). It must be selected only where fast switching and low VF are required - not general-purpose AC rectification. Always verify layout thermal relief and snubber requirements before substitution.

What does the "H" suffix in UG2DH signify?

The "H" in UG2DH explicitly denotes AEC-Q101 qualification per Taiwan Semiconductor's ordering code convention. This means the UG2DH lot has undergone full automotive stress testing including HTOL, temperature cycling, HAST, and mechanical shock - unlike UG2D (no suffix) or UG2D A0G. The qualification applies to the specific UG2DH build, not the base UG2D family.

Can UG2DH operate continuously at 2 A ambient temperature above 75°C?

No - UG2DH's 2 A IF rating is specified at TA = 75°C with derating above that point per Fig.1 Forward Current Derating Curve. At 100°C ambient, maximum continuous current drops to ~1.3 A; at 125°C, it falls to ~0.8 A. For sustained 2 A operation, forced airflow or heatsinking is required. Junction temperature must remain ≤150°C under all conditions.

Does UG2DH support lead-free reflow soldering per JEDEC J-STD-020?

Yes, UG2DH's pure tin-plated leads meet J-STD-002 solderability requirements and are compatible with standard lead-free reflow profiles (peak 260°C, 10 s max). The DO-204AC package body is rated for UL 94V-0 and withstands multiple reflow cycles without delamination or marking degradation, provided preheat and soak times follow Taiwan Semiconductor's recommended profile in Application Note AN-102.

How does UG2DH's reverse recovery time compare between datasheet test conditions?

UG2DH specifies two trr values: 15 ns (typ.) under IF = 0.5 A, IR = 1.0 A, Irr = 0.25 A; and 25 ns (max) under IF = 2.0 A, VR = 30 V, di/dt = 50 A/µs, Irr = 10% IRM. The latter reflects real-world high-current switching stress - critical for evaluating EMI and loss in 2 A-rated converters. Both values confirm ultra-fast classification per JEDEC JESD28-C.