Taiwan Semiconductor Corporation UG2D

Overview

UG2D from Taiwan Semiconductor is a 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 and 25 ns at 2 A/30 V, optimized for high-frequency DC–DC converters and switching inverters requiring low conduction loss and fast turn-off.

For engineers reviewing the UG2D datasheet, UG2D pinout, UG2D application, or UG2D equivalent, key selection criteria include its AEC-Q101-qualified variant (UG2DHA0G), 80 A non-repetitive surge rating, 0.95 V max forward voltage at 2 A/25°C, glass-passivated junction, and RoHS/halogen-free compliance for automotive and industrial power conversion designs.

Technical Context

The UG2D employs a single-die planar epitaxial silicon structure with glass passivation to ensure stable high-temperature operation up to 150°C junction temperature and robust surge immunity. Its ultra-fast recovery is achieved via controlled carrier lifetime reduction, enabling efficient operation in 100 kHz–1 MHz switching topologies.

Thermal performance is defined by a junction-to-ambient thermal resistance of 60°C/W in standard PCB mounting, and electrical behavior is characterized across temperature: VF drops to 0.80 V at 125°C (IF = 2 A), while IR rises to 200 µA at same condition - critical for standby leakage management in high-efficiency SMPS.

Key Specifications

Pinout & Package

Package: DO-204AC (DO-15), axial leaded, glass-passivated silicon die, cathode indicated by band. Weight: 0.330 g. Leads are pure tin-plated, J-STD-002 solderable.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH2R02 and ES2D, the UG2D offers the fastest trr (15 ns min), smallest axial package (DO-15), and only AEC-Q101-qualified option among the three - making it optimal for space-constrained, high-frequency, automotive-grade rectification where surge robustness and thermal stability are jointly critical.

Availability

UG2D is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and automotive power modules requiring stable component supply, consistent parametric performance, and long-term lifecycle support.

Supply support for UG2D 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 diodes, and MOSFETs for industrial and automotive markets.

The UG2D belongs to TSC's ultra-fast recovery rectifier product line, engineered specifically for high-efficiency, high-frequency power conversion systems where low Qrr, stable high-temperature operation, and AEC-Q101 compliance are mandatory design requirements.

FAQ

What is the maximum junction temperature rating for the UG2D?

The UG2D has a maximum junction temperature (TJ max) of +150°C, verified per absolute maximum ratings in the official datasheet. This rating applies across the full 2 A forward current range and enables reliable operation in sealed enclosures or high-ambient environments. Derating begins above 75°C ambient per the forward current derating curve. The UG2D maintains specified VF and trr performance up to this limit, and its glass-passivated junction ensures parameter stability throughout the range.

Is the UG2D suitable for automotive applications?

Yes - the UG2DHA0G variant is explicitly AEC-Q101 qualified per the ordering information and features section. It undergoes stress testing including high-temperature operating life (HTOL), temperature cycling (TC), and biased highly accelerated stress test (BHAST). While the base UG2D marking does not imply qualification, UG2DHA0G is fully validated for automotive powertrain and body electronics. Always specify UG2DHA0G for automotive designs requiring certified reliability.

What is the reverse recovery time (trr) of the UG2D under typical operating conditions?

The UG2D exhibits trr = 15 ns when tested at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A, and 25 ns at IF = 2.0 A, VR = 30 V, di/dt = 50 A/µs, and Irr = 10% IRM. These values are measured per JEDEC standards and reflect actual switching behavior in high-frequency converters. The 25 ns value is the design-critical figure for full-load operation, directly impacting switching loss and EMI generation in 200–500 kHz topologies.

Does the UG2D have RoHS and halogen-free compliance?

Yes - the UG2D is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the FEATURES section and ordering notes. The molding compound meets UL 94V-0 flammability rating, and leads are pure tin-plated per J-STD-002. This compliance applies to all variants including UG2D, UG2DHA0G, and UG2DH. No exemptions or exceptions are noted in the official documentation.

What packaging options are available for the UG2D?

The UG2D is offered in DO-204AC (DO-15) package across multiple packing formats: UG2D (3,500 pcs/tape & reel), UG2D A0G (1,500 pcs/ammo box), UG2DH (3,500 pcs/tape & reel), and UG2DHA0G (1,500 pcs/ammo box). All share identical mechanical dimensions and thermal characteristics. The "H" suffix denotes AEC-Q101 qualification, and "A0G" indicates ammo box packaging - critical for ESD-sensitive assembly lines requiring low-static handling.