Taiwan Semiconductor Corporation ESH3D

Overview

ESH3D from Taiwan Semiconductor is a 200V, 3A ultra-fast recovery surface-mount rectifier in DO-214AB (SMC) package, featuring 20 ns reverse recovery time, 0.9 V forward voltage at 3 A, and 125 A peak surge current - deployed in high-frequency switching mode power supplies for telecom and computing infrastructure.

For engineers reviewing the ESH3D datasheet, ESH3D pinout, ESH3D application, or ESH3D equivalent, key selection criteria include repetitive peak reverse voltage (200 V), thermal resistance (12 °C/W junction-to-lead), junction capacitance (45 pF), moisture sensitivity level (J-STD-020 Level 1), and RoHS/halogen-free compliance for automated SMT assembly in industrial-grade converters.

Technical Context

The ESH3D operates as a single-die, unidirectional silicon rectifier optimized for high-frequency freewheeling and output rectification in SMPS topologies. Its ultra-fast trr ≤ 20 ns enables reduced switching losses in 100–500 kHz converters, while glass-passivated junction ensures stable performance across –55°C to +175°C junction temperature range.

Thermal design is supported by low R_θJL = 12 °C/W and R_θJA = 47 °C/W, enabling 3 A continuous conduction with minimal heatsinking. The device uses matte tin-plated leads compliant with J-STD-002 and meets JESD201 Class 2 whisker resistance.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC), molded epoxy case meeting UL 94V-0; cathode indicated by band; matte tin-plated leads; weight ≈ 0.200 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VS-3EWH02-M3/5BT and MUR320, the ESH3D delivers superior switching efficiency via its 20 ns t_rr and 0.9 V V_F, while maintaining full SMT compatibility and J-STD-020 Level 1 handling - making it optimal for space-constrained, high-frequency telecom and server power stages.

Availability

ESH3D is available at Aetrix Electronics and suitable for telecom AC-DC adapters, server VRM output rectification, and industrial motor drive inverters requiring stable component supply, consistent parametric performance, and full RoHS/halogen-free compliance.

Supply support for ESH3D 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 computing markets.

The ESH3x series targets high-efficiency, high-reliability AC-DC and DC-DC conversion systems where ultra-fast recovery, thermal robustness, and automated assembly compatibility are essential design requirements.

FAQ

What is the maximum junction temperature rating for the ESH3D?

The ESH3D has a maximum junction temperature (T_JMAX) of +175°C, allowing reliable operation in thermally demanding environments such as enclosed telecom power supplies or proximity to IGBT modules. This rating is validated per absolute maximum ratings table and supports derated continuous current up to 3 A at ambient temperatures ≤ 85°C with appropriate PCB copper area.

Does the ESH3D meet lead-free and halogen-free manufacturing standards?

Yes, the ESH3D is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound contains no brominated flame retardants, and terminals are matte tin-plated to meet J-STD-002 solderability requirements - fully compatible with lead-free reflow profiles used in modern SMT lines.

What is the reverse recovery time specification for the ESH3D, and under what test conditions is it measured?

The ESH3D reverse recovery time (t_rr) is 20 ns maximum, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A, per the manufacturer's electrical specifications table. This value reflects actual switching behavior in high-frequency converters and is verified using standardized double-pulse test circuits.

Can the ESH3D be used as a direct replacement for the ESH3B or ESH3C in an existing design?

No - although all share the same DO-214AB package and pinout, the ESH3D has a higher V_RRM (200 V) versus ESH3B (100 V) and ESH3C (150 V). Substituting ESH3D may be acceptable if voltage margin is needed, but forward voltage and thermal characteristics remain identical; always verify layout clearance and transient stress margins before interchange.

What is the moisture sensitivity level (MSL) rating for the ESH3D, and how does it impact assembly?

The ESH3D is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and can be placed directly into reflow ovens without pre-baking. This eliminates moisture-related popcorning risk and simplifies SMT line integration - especially valuable for high-volume telecom and server power supply manufacturing.