Taiwan Semiconductor Corporation S3B M6G

Overview

S3B M6G from Taiwan Semiconductor is a surface-mount silicon rectifier diode with 100 V repetitive peak reverse voltage (V_RRM), 3 A average forward current (I_F), and 100 A non-repetitive surge capability (I_FSM), housed in a DO-214AB (SMC) package. It delivers low forward voltage drop (≤1.15 V at 3 A, 25°C) and high thermal robustness (T_J up to 150°C), making it suitable for compact AC/DC front-end rectification in offline switch-mode power supplies.

For engineers reviewing the S3B M6G datasheet, S3B M6G pinout, S3B M6G application, or S3B M6G equivalent, key selection criteria include its 100 V V_RRM, 13 °C/W junction-to-lead thermal resistance, 1500 ns reverse recovery time, moisture sensitivity level 1 compliance, and DO-214AB mechanical compatibility with automated SMT assembly lines.

Technical Context

This device is a single-die, standard recovery silicon rectifier optimized for cost-sensitive, medium-power AC/DC conversion where fast recovery is not required. Its 1500 ns reverse recovery time and 60 pF junction capacitance reflect trade-offs favoring low conduction loss over switching speed.

The DO-214AB (SMC) package provides robust thermal dissipation (R_θJA = 47 °C/W, R_θJL = 13 °C/W) and supports reflow soldering per J-STD-002, with matte tin-plated leads and JESD201 Class 2 whisker resistance.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC), surface-mount, single-anode/single-cathode configuration. Cathode indicated by molded band on body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MUR3100CT and VS-3EYH01-M3/54, the S3B M6G offers optimal balance of cost, DO-214AB SMT compatibility, and proven reliability in mid-power rectification-making it preferred for volume production where thermal performance and manufacturability outweigh ultra-fast recovery needs.

Availability

S3B M6G is available at Aetrix Electronics and suitable for switching mode power supplies, AC/DC adapters, and LED lighting drivers requiring stable component supply, consistent parametric performance, and full traceability across production batches.

Supply support for S3B M6G 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 industrial, computing, and consumer markets since 1979.

The S3A–S3M series was designed specifically for high-volume, cost-optimized AC/DC rectification in space-constrained applications-emphasizing manufacturability, thermal resilience, and regulatory compliance without sacrificing baseline electrical performance.

FAQ

What is the maximum junction temperature rating for the S3B M6G?

The S3B M6G has a maximum junction temperature (T_J) of +150°C, verified per absolute maximum ratings table. This allows reliable operation in enclosed, high-ambient environments such as sealed LED drivers or industrial power supplies. Derating curves confirm usable current capacity down to 75°C lead temperature, and the device must be mounted on adequate copper area to maintain this limit under full load. The S3B M6G's thermal design relies on its 13 °C/W R_θJL to transfer heat efficiently to the PCB.

Is the S3B M6G suitable for use in RoHS-compliant and halogen-free assemblies?

Yes, the S3B M6G is fully RoHS compliant per EU Directive 2011/65/EU and halogen-free per IEC 61249-2-21. Its matte tin-plated leads meet J-STD-002 solderability requirements, and the molding compound is UL 94V-0 rated. These attributes make the S3B M6G appropriate for green-certified products including ENERGY STAR–qualified adapters and commercial LED lighting systems where material declarations are mandatory.

What does the "M6G" suffix indicate in S3B M6G?

The "M6G" suffix in S3B M6G is Taiwan Semiconductor's internal date and factory code: "M6" denotes manufacturing week/year (e.g., week 6 of 2023), and "G" identifies the fabrication site. It does not affect electrical specifications-the core device remains the S3B rectifier with 100 V V_RRM, 3 A I_F, and DO-214AB packaging. All S3B M6G units share identical parametric performance and mechanical dimensions as defined in Version O2301 of the datasheet.

Can the S3B M6G replace a 1N5408 in an existing design?

No-the S3B M6G is a surface-mount DO-214AB device, while the 1N5408 is through-hole DO-201AD. Though both are 3 A, 1000 V rectifiers, their packages, thermal paths, and assembly processes differ fundamentally. Substituting S3B M6G requires PCB redesign, reflow profile validation, and thermal analysis. For SMT migration, consider the S3B M6G only as part of a deliberate layout update-not as a drop-in replacement for 1N5408.

What is the reverse recovery time (t_rr) of the S3B M6G and how does it impact circuit design?

The S3B M6G has a reverse recovery time (t_rr) of 1500 ns, measured at I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This standard recovery characteristic makes it unsuitable for high-frequency (>100 kHz) topologies like resonant LLC or active clamp forward converters, where fast recovery diodes minimize switching losses. Instead, the S3B M6G is optimized for line-frequency and low-frequency SMPS, where its low V_F and robust surge rating deliver superior conduction efficiency.