Taiwan Semiconductor Corporation S3MBHR5G

Overview

S3MBHR5G from Taiwan Semiconductor is a 3A, 1000V standard surface-mount silicon rectifier diode in DO-214AA (SMB) package, featuring glass-passivated junction, 1.15V max forward voltage at 3A/25°C, 80A surge capability, and 150°C max junction temperature - used in high-voltage AC/DC front-end stages of industrial SMPS and LED drivers.

For engineers reviewing the S3MBHR5G datasheet, S3MBHR5G pinout, S3MBHR5G application, or S3MBHR5G equivalent, key selection criteria include repetitive peak reverse voltage (1000V), thermal resistance (10°C/W), moisture sensitivity level (J-STD-020 Level 1), RoHS/halogen-free compliance, and SMB package compatibility with automated SMT placement.

Technical Context

This device is a single-die, unidirectional standard recovery rectifier optimized for line-frequency and low-frequency switching applications. Its 1500ns reverse recovery time and 40pF junction capacitance reflect trade-offs favoring low conduction loss over fast switching - suitable for 50/60Hz input rectification and PFC pre-stage diodes where EMI and dv/dt stress are managed externally.

Thermally, it delivers 3A average forward current with derating above 75°C ambient, supported by 10°C/W junction-to-lead resistance and UL 94V-0 molding compound. Cathode polarity is marked by a visible band, and matte tin-plated leads meet J-STD-002 solderability requirements.

Key Specifications

Pinout & Package

Package: DO-214AA (SMB), surface-mount, single-anode/single-cathode configuration. Cathode indicated by molded band. Matte tin-plated leads, J-STD-002 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH3L06S and MUR320, the S3MBHR5G uniquely balances 1000V blocking capability with robust 3A/80A current handling - making it irreplaceable in high-line industrial rectification where voltage margin and surge immunity are non-negotiable.

Availability

S3MBHR5G is available at Aetrix Electronics and suitable for industrial SMPS, LED driver bulk charging, and offline battery charger input rectification requiring stable component supply across multi-year production cycles.

Supply support for S3MBHR5G 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 electronics and industrial markets since 1979.

The S3AB–S3MB series was designed specifically for cost-sensitive, high-reliability AC/DC front-end rectification - emphasizing ruggedness, manufacturability, and compliance in industrial and lighting applications.

FAQ

What is the maximum repetitive peak reverse voltage rating for S3MBHR5G?

The S3MBHR5G has a maximum repetitive peak reverse voltage (V_RRM) of 1000 V, confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version M2102). This rating defines the highest instantaneous reverse voltage the diode can block repeatedly without breakdown, making S3MBHR5G suitable for rectifying 700V RMS AC inputs with appropriate safety margin. Operation beyond this voltage risks irreversible avalanche failure.

Does S3MBHR5G have a halogen-free construction?

Yes, S3MBHR5G is halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. This applies to the molding compound and internal materials, supporting compliance with environmental regulations in EU and other regulated markets. The S3MBHR5G also meets RoHS Directive 2011/65/EU requirements, and both certifications are validated per TSC's material declarations.

What is the forward voltage drop of S3MBHR5G at rated current?

The forward voltage drop (V_F) of S3MBHR5G is specified as ≤1.15 V at 3 A forward current and 25°C junction temperature, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to minimize self-heating. At higher temperatures or continuous DC operation, V_F decreases slightly due to negative temperature coefficient, but power dissipation must still be calculated using worst-case thermal conditions to ensure S3MBHR5G remains within its 150°C T_J limit.

Is S3MBHR5G suitable for automated SMT assembly?

Yes, S3MBHR5G is explicitly designed for automated placement, as noted in the FEATURES section. Its DO-214AA (SMB) package, matte tin-plated leads, and J-STD-020 Level 1 moisture sensitivity enable direct placement without baking or special handling. The device is supplied in 3,000-piece tape-and-reel format, compatible with standard pick-and-place machines. Lead coplanarity and terminal geometry meet IPC-7351B standards for SMB footprint accuracy.

What is the thermal resistance from junction to lead for S3MBHR5G?

The junction-to-lead thermal resistance (R_θJL) of S3MBHR5G is 10°C/W, as published in the Thermal Performance section of the datasheet. This parameter quantifies heat transfer efficiency from the silicon die to the PCB copper via the leads, and is critical for estimating temperature rise under load. When mounted on ≥1 cm² of 2-oz copper with thermal vias, S3MBHR5G can sustain 3 A continuously at up to 75°C ambient - exceeding typical industrial derating curves shown in Figure 1.