Taiwan Semiconductor Corporation S1GLWH

Overview

S1GLWH from Taiwan Semiconductor is a 1 A, 400 V repetitive peak reverse voltage (V_RRM) standard surface-mount silicon rectifier diode in SOD-123W package, featuring 30 A non-repetitive surge current capability, 1.1 V max forward voltage at 1 A, and AEC-Q101 qualification for automotive-grade reliability - used in DC-DC converter output stages and automotive lighting snubber circuits.

For engineers reviewing the S1GLWH datasheet, S1GLWH pinout, S1GLWH application, or S1GLWH equivalent, key selection criteria include verified V_RRM = 400 V, I_F = 1 A continuous rating, T_JMAX = 175 °C operation, moisture sensitivity level 1 compliance, and SOD-123W footprint compatibility with automated placement systems.

Technical Context

The S1GLWH is a single-die, planar-passivated silicon PN junction rectifier optimized for high-efficiency, low-loss AC-to-DC conversion in space-constrained applications. Its 400 V V_RRM, 1.1 V V_F (max at 1 A, 25 °C), and 8 pF junction capacitance support stable switching behavior up to mid-frequency ranges.

Thermally, it delivers R_θJL = 25 °C/W and R_θJA = 80 °C/W, enabling reliable operation at full rated current without forced airflow in typical PCB layouts. The cathode-band polarity marking and matte tin-plated leads ensure unambiguous orientation and J-STD-002-compliant solderability.

Key Specifications

Pinout & Package

Package: SOD-123W - compact surface-mount plastic case (2.7 × 1.6 × 1.0 mm), UL 94V-0 rated, with matte tin-plated leads and cathode band polarity indicator.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MUR140SFT1G and VS-1EWH04-M3/5AT, the S1GLWH offers the lowest guaranteed V_F (≤1.1 V) among AEC-Q101-qualified 400 V/1 A SOD-123W rectifiers and the tightest I_R specification at 25 °C, making it optimal for thermally sensitive or low-leakage automotive subsystems.

Availability

S1GLWH is available at Aetrix Electronics and suitable for DC–DC converter output rectification, automotive LED lighting drivers, and industrial power supply input stages requiring stable component supply, automotive-grade reliability, and SOD-123W footprint consistency.

Supply support for S1GLWH 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, specializing in power devices, rectifiers, TVS diodes, and MOSFETs for industrial and automotive markets.

The S1GLWH belongs to TSC's S1xLWH family of AEC-Q101-qualified surface-mount rectifiers designed specifically for high-reliability automotive power conversion and industrial snubber applications where thermal robustness and surge resilience are critical.

FAQ

What is the peak repetitive reverse voltage rating for the S1GLWH?

The S1GLWH has a peak repetitive reverse voltage (V_RRM) rating of 400 V, as specified in the absolute maximum ratings table of the official Taiwan Semiconductor datasheet (Version B2109). This value is fixed for the S1GLWH variant and distinguishes it from other members of the S1xLWH series such as S1DLWH (200 V) and S1MLWH (1000 V). The 400 V rating ensures safe operation in 24 V automotive systems with transient suppression and in universal-input offline power supplies.

Is the S1GLWH qualified for automotive applications?

Yes, the S1GLWH is explicitly AEC-Q101 qualified per the manufacturer's documentation, confirming its suitability for automotive electronic systems including body control modules, lighting drivers, and infotainment power supplies. This qualification covers stress tests for temperature cycling, humidity bias, and mechanical shock. The S1GLWH's 175 °C maximum junction temperature and moisture sensitivity level 1 further reinforce its readiness for under-hood and cabin-mounted automotive deployments.

What package type does the S1GLWH use, and what are its key mechanical features?

The S1GLWH uses the SOD-123W surface-mount package - measuring 2.7 mm × 1.6 mm × 1.0 mm - with UL 94V-0 flammability-rated molding compound and matte tin-plated leads compliant with J-STD-002 solderability standards. Its cathode band marking provides unambiguous polarity identification, and its 0.019 g weight supports high-speed pick-and-place assembly. The SOD-123W footprint is industry-standard and compatible with common stencil designs for reflow soldering.

What is the maximum forward voltage of the S1GLWH at rated current?

The S1GLWH has a maximum forward voltage (V_F) of 1.1 V when conducting 1 A of forward current at 25 °C junction temperature, as confirmed in the electrical specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) to minimize self-heating. At elevated temperatures (e.g., 125 °C), V_F decreases slightly due to semiconductor physics, but the 1.1 V limit remains the design-critical worst-case value for thermal and efficiency calculations.

Does the S1GLWH have halogen-free and RoHS-compliant construction?

Yes, the S1GLWH is both RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as stated in the FEATURES section of the official Taiwan Semiconductor datasheet. These environmental attributes are verified through material declarations and are integral to the device's qualification for use in consumer, industrial, and automotive electronics where regulatory compliance and end-of-life recyclability are mandatory.