Taiwan Semiconductor Corporation S15GLWH

Overview

S15GLWH from Taiwan Semiconductor is a 1.5A, 400V repetitive peak reverse voltage (V_RRM) standard surface-mount silicon rectifier diode in SOD-123W package, featuring AEC-Q101 qualification, 50A surge current rating (I_FSM), and maximum junction temperature of 175°C - used in automotive lighting and DC-DC converter power stages.

For engineers reviewing the S15GLWH datasheet, S15GLWH pinout, S15GLWH application, or S15GLWH equivalent, key selection criteria include V_RRM = 400V, I_F = 1.5A, forward voltage ≤1.10V at 1.5A/25°C, thermal resistance R_θJA = 85°C/W, and AEC-Q101 compliance for automotive-grade reliability.

Technical Context

The S15GLWH is a single-die, unidirectional standard recovery rectifier optimized for medium-voltage, moderate-current power conversion. Its 400V V_RRM, 1.5A average forward current, and 50A non-repetitive surge capability support transient-tolerant operation in automotive and industrial power supplies.

Thermal performance is defined with R_θJL = 29°C/W and R_θJA = 85°C/W on a 5mm × 5mm Cu pad PCB. Forward voltage ranges from 0.98V (typ) to 1.10V (max) at 1.5A/25°C, and reverse leakage remains ≤100µA at 125°C under rated reverse voltage.

Key Specifications

Pinout & Package

Package: SOD-123W - Surface-mount plastic case with matte tin-plated leads, UL 94V-0 molding compound, polarity indicated by cathode band, weight ≈0.019g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MURS140T3G and VS-1N4937-M3/54, the S15GLWH delivers higher average current (1.5A vs. 1A), AEC-Q101 qualification, and SOD-123W SMT compatibility - making it optimal for space-constrained, automotive-grade power rectification where thermal and reliability margins are critical.

Availability

S15GLWH is available at Aetrix Electronics and suitable for automotive LED lighting, DC-DC converter output rectification, and industrial power supply input stages requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.

Supply support for S15GLWH 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 S15GLWH belongs to TSC's S15xLWH family of AEC-Q101-qualified surface-mount rectifiers designed specifically for automotive power conversion - emphasizing thermal robustness, surge resilience, and automated assembly compatibility.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for S15GLWH?

The S15GLWH has a V_RRM of 400 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version A2103). This rating defines the highest reverse voltage the device can block repeatedly without breakdown. It is critical for selecting appropriate voltage margin in snubber networks and DC-DC output stages. The S15GLWH is part of a family spanning 200V to 1000V, and its marking code "15GLW" explicitly identifies the 400V variant.

Is S15GLWH qualified for automotive applications?

Yes, the S15GLWH is AEC-Q101 qualified, as stated in the FEATURES section of the official datasheet. This qualification covers stress tests including high-temperature operating life, temperature cycling, and unbiased highly accelerated stress testing. It confirms suitability for automotive subsystems such as LED lighting and body control modules. The S15GLWH's 175°C T_J max and moisture sensitivity level 1 further support automotive manufacturing and field reliability requirements.

What is the forward voltage (V_F) of S15GLWH at 1.5A and 25°C?

The forward voltage of S15GLWH is specified as ≤1.10 V (maximum) at I_F = 1.5 A and T_J = 25°C, per the Electrical Specifications table. The typical value is 0.98 V under those conditions. This parameter directly affects conduction losses and thermal design - for example, at 1.5A, max power dissipation due to V_F alone is 1.65 W. The datasheet also provides V_F values at 125°C (≤1.05 V), confirming stable performance across automotive temperature ranges.

What package type does S15GLWH use, and what are its key mechanical properties?

The S15GLWH uses the SOD-123W surface-mount package, as documented in Mechanical Data and Ordering Information. Key properties include matte tin-plated leads (solderable per J-STD-002), UL 94V-0 flammability rating, polarity indicated by cathode band, and approximate weight of 0.019 g. The package supports automated placement and meets JESD201 Class 2 whisker resistance. Its compact size enables high-density PCB layouts in space-constrained automotive modules.

Does S15GLWH have halogen-free and RoHS compliance certifications?

Yes, the S15GLWH is both halogen-free per IEC 61249-2-21 and RoHS compliant, as explicitly stated in the FEATURES section. These certifications are verified by Taiwan Semiconductor's material declarations and are required for market access in the EU, China, and other regulated regions. The halogen-free status ensures safer thermal decomposition during rework or end-of-life processing, while RoHS compliance confirms absence of lead, mercury, cadmium, and other restricted substances in homogeneous materials.