Taiwan Semiconductor Corporation S5BH

Overview

S5BH from Taiwan Semiconductor is a surface-mount silicon rectifier diode rated for 5 A average forward current and 100 V repetitive peak reverse voltage in a DO-214AB (SMC) package, featuring low forward voltage drop (≤1.15 V at 5 A), high surge capability (100 A IFSM), and AEC-Q101 qualification for automotive use.

For engineers reviewing the S5BH datasheet, S5BH pinout, S5BH application, or S5BH equivalent, key selection criteria include its 100 V VRRM rating, 13 °C/W junction-to-lead thermal resistance, 1500 ns reverse recovery time, and suitability for DC–DC converters, automotive lighting, and snubber circuits where ruggedness and moisture-insensitive packaging are required.

Technical Context

The S5BH is a single-die, standard recovery rectifier with glass-passivated junction, designed for unidirectional conduction in medium-power switching and clamping applications. Its 1500 ns trr and 60 pF junction capacitance reflect trade-offs favoring robust surge handling over ultra-fast switching.

Thermally, it delivers 13 °C/W R_θJL and 47 °C/W R_θJA, enabling reliable operation up to 150 °C junction temperature. Polarity is marked by a cathode band, and terminals are matte tin-plated per J-STD-002 solderability standards.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC), surface-mount, molded plastic case meeting UL 94V-0; polarity indicated by cathode band; weight ≈0.210 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH5L06 and ES5B, the S5BH uniquely combines AEC-Q101 qualification, 100 V rating, and 1.15 V VF in DO-214AB-making it optimal for cost-sensitive, thermally constrained automotive rectification where 100 V suffices and reliability certification is mandatory.

Availability

S5BH is available at Aetrix Electronics and suitable for automotive lighting, DC–DC converter output rectification, and snubber network clamping requiring stable component supply across production lifecycles.

Supply support for S5BH 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 automotive, industrial, and consumer markets since 1979.

The S5BH belongs to TSC's S5xH family of AEC-Q101-qualified surface-mount rectifiers engineered specifically for automotive power conversion and clamping applications demanding high surge immunity and moisture resilience.

FAQ

What is the maximum junction temperature rating for the S5BH?

The S5BH has a maximum junction temperature (T_J) rating of +150°C, verified per AEC-Q101 stress testing. This allows sustained operation in under-hood automotive environments where ambient temperatures reach 125°C, provided thermal design maintains junction temperature below this limit. The S5BH's 13 °C/W R_θJL enables effective heat transfer to copper pads, making it suitable for high-reliability applications without external heatsinks.

Is the S5BH pin-compatible with other DO-214AB rectifiers like ES5B or MUR5100?

The S5BH uses the standard DO-214AB (SMC) package with anode and cathode terminals in fixed positions per JEDEC outline, making it mechanically pin-compatible with ES5B and MUR5100. However, electrical differences exist: ES5B shares identical VRRM and VF but lacks AEC-Q101; MUR5100 has 1000 V VRRM and faster trr. Layout reuse is possible, but system-level validation is required before substitution.

Does the S5BH meet RoHS and halogen-free requirements?

Yes, the S5BH complies with RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. Its molding compound contains no brominated flame retardants, and terminals are matte tin-plated without lead, antimony, or bismuth additives. These compliance attributes are confirmed in TSC's official product declaration and supported by material test reports available upon request for the S5BH.

What is the reverse recovery time (trr) specification for the S5BH, and how does it affect circuit performance?

The S5BH has a typical reverse recovery time (trr) of 1500 ns under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A conditions. This value indicates moderate-speed recovery suitable for line-frequency and low-to-moderate frequency switching (e.g., <100 kHz). In the S5BH, longer trr increases switching loss compared to ultrafast diodes but improves surge robustness-making it appropriate for snubbers and automotive DC–DC outputs where reliability outweighs speed.

Can the S5BH be used in place of the S5AH or S5DH in an existing design?

No-the S5BH is not interchangeable with S5AH (50 V) or S5DH (200 V) without circuit review. While all share DO-214AB packaging and 5 A IF rating, their VRRM ratings differ: S5AH = 50 V, S5BH = 100 V, S5DH = 200 V. Substituting the S5BH for S5AH risks overvoltage failure; using it instead of S5DH may compromise reverse blocking margin. Always verify reverse voltage stress margins before replacing any S5xH variant, including the S5BH.