Taiwan Semiconductor Corporation ESH3C R7G

Overview

ESH3C R7G from Taiwan Semiconductor is a 3A, 150V ultra-fast surface-mount rectifier in DO-214AB (SMC) package, featuring 20 ns reverse recovery time, 0.9 V max forward voltage at 3 A, and 125 A peak surge current capability. It serves as a primary output rectifier in high-frequency switching power supplies for telecom and computing infrastructure.

For engineers reviewing the ESH3C R7G datasheet, ESH3C R7G pinout, ESH3C R7G application, or ESH3C R7G equivalent, key selection criteria include repetitive peak reverse voltage (150 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.

Technical Context

The ESH3C R7G employs a glass-passivated single-die silicon junction optimized for high-efficiency DC/DC conversion in SMPS topologies. Its ultra-fast trr ≤ 20 ns enables reduced switching losses in 100–500 kHz converters, while the DO-214AB package supports automated placement and meets UL 94V-0 flammability requirements.

Thermal performance is defined by R_θJL = 12 °C/W and R_θJA = 47 °C/W, enabling sustained 3 A conduction at T_J ≤ 175 °C. Reverse leakage remains ≤ 5 µA at 25 °C and ≤ 150 µA at 125 °C under rated V_RRM, ensuring stable operation in thermally constrained environments.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC), molded plastic case with matte tin-plated leads, polarity indicated by cathode band, 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-3EWH01-M3/45 and MUR3150CT, the ESH3C R7G delivers superior high-frequency performance (20 ns vs. 25/35 ns), SMT compatibility, and tighter thermal resistance-making it optimal for space-constrained, high-efficiency telecom and server power designs.

Availability

ESH3C R7G is available at Aetrix Electronics and suitable for server power supplies, telecom DC/DC converters, industrial AC/DC adapters, and embedded computing power rails requiring stable component supply and J-STD-020 Level 1 assembly readiness.

Supply support for ESH3C R7G 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 global power management and protection markets since 1979.

The ESH3x series is part of TSC's ultra-fast rectifier product line, engineered specifically for high-frequency switching power conversion in computing, communications, and industrial equipment where efficiency, reliability, and SMT manufacturability are critical.

FAQ

What is the maximum repetitive peak reverse voltage rating for ESH3C R7G?

The ESH3C R7G has a maximum repetitive peak reverse voltage (V_RRM) of 150 V, as specified in the absolute maximum ratings table. This value is fixed per the ESH3C variant designation and is verified across production lots per Taiwan Semiconductor's I2102 specification revision. The ESH3C R7G must not be operated above this voltage in continuous or repetitive reverse-bias conditions to ensure long-term reliability.

Does ESH3C R7G support lead-free reflow soldering per J-STD-020?

Yes, the ESH3C R7G is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it can be subjected to standard lead-free reflow profiles (e.g., JEDEC J-STD-020D peak of 260 °C) without baking or special handling. Its matte tin-plated leads comply with J-STD-002 for solderability, and the DO-214AB package uses UL 94V-0 molding compound compatible with Pb-free thermal cycles.

What is the typical junction capacitance of ESH3C R7G and how does it affect high-frequency operation?

The ESH3C R7G exhibits a typical junction capacitance (C_J) of 45 pF measured at 1 MHz and 4.0 V reverse bias. This low capacitance minimizes displacement current during switching transitions, reducing EMI generation and improving noise immunity in 200–500 kHz SMPS designs. It also lowers capacitive loading on gate-drive nodes when used in snubberless or active-clamp configurations.

How does the thermal resistance of ESH3C R7G compare to similar SMC-packaged rectifiers?

The ESH3C R7G specifies R_θJL = 12 °C/W (junction-to-lead), which is among the lowest in its class for DO-214AB ultra-fast rectifiers. This enables more effective heat transfer to PCB copper pours than alternatives with R_θJL ≥ 15 °C/W, allowing sustained 3 A operation at higher ambient temperatures without forced air cooling in compact power modules.

Is ESH3C R7G halogen-free and RoHS compliant?

Yes, the ESH3C R7G is both RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound contains no brominated flame retardants or chlorine-based additives, and all homogeneous materials meet EU Directive 2011/65/EU requirements. This compliance is confirmed in Taiwan Semiconductor's official product change notices and material declarations for version I2102.