Taiwan Semiconductor Corporation SJLWH

Overview

SJLWH from Taiwan Semiconductor is a 600 V, 0.8 A standard surface-mount silicon rectifier diode in SOD-123W package, featuring glass-passivated junction, AEC-Q101 qualification, and 20 A peak surge capability - used in automotive lighting and DC-DC snubber circuits.

For engineers reviewing the SJLWH datasheet, SJLWH pinout, SJLWH application, or SJLWH equivalent, key selection criteria include repetitive peak reverse voltage (600 V), forward voltage at 0.8 A (max 1.10 V @ 25°C), thermal resistance (R_θJA = 84 °C/W), AEC-Q101 qualification, and SOD-123W mechanical compatibility with automated placement.

Technical Context

The SJLWH is a single-die, unidirectional standard recovery rectifier optimized for moderate-frequency switching applications up to ~100 kHz. Its glass-passivated junction ensures stable leakage performance across temperature (IR ≤ 150 µA @ 125°C) and robustness against humidity and mechanical stress.

Thermal design relies on its low R_θJL of 30 °C/W and defined mounting on 5 mm × 5 mm Cu pads. Polarity is marked by cathode band; terminals are matte tin-plated per J-STD-002, supporting lead-free reflow.

Key Specifications

Pinout & Package

Package: SOD-123W - surface-mount, molded plastic case with matte tin-plated leads, UL 94V-0 rated compound, polarity indicated by cathode band, weight ≈ 0.016 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH0.8L06S and ES1J, the SJLWH uniquely combines AEC-Q101 qualification, SOD-123W footprint, and 20 A surge rating - making it the preferred choice for space-limited, thermally managed automotive subsystems requiring validated reliability.

Availability

SJLWH is available at Aetrix Electronics and suitable for automotive LED lighting, DC-DC converter output rectification, and snubber network applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for SJLWH 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, protection components, and automotive-qualified products.

The SJLWH belongs to TSC's SxLWH standard rectifier family, designed specifically for cost-effective, high-reliability rectification in automotive and industrial power conversion where AEC-Q101 compliance and SMT manufacturability are critical.

FAQ

What is the marking code for SJLWH on the device body?

The SJLWH is marked with "JLW" on the cathode end of the SOD-123W package, followed by a date code and factory identifier. This marking aligns with Taiwan Semiconductor's standardized coding scheme for the SxLWH series, where "J" denotes the 600 V variant. The full part number SJLWH is not printed on the device - only the three-character code JLW is used for identification during assembly and inspection.

Is SJLWH suitable for use in automotive under-hood applications?

Yes, SJLWH is AEC-Q101 qualified and rated for junction temperatures up to 150 °C, making it suitable for under-hood automotive applications such as LED lighting drivers and engine control auxiliary supplies. Its glass-passivated junction, halogen-free construction, and moisture sensitivity level 1 ensure robustness against thermal cycling, humidity, and chemical exposure encountered in those environments - provided PCB thermal design meets the 5 mm × 5 mm Cu pad requirement.

What is the forward voltage of SJLWH at 0.8 A and 125°C?

The forward voltage of SJLWH is specified as 0.84 V (typical) and 1.01 V (maximum) at 0.8 A and 125°C. This elevated temperature rating reflects reduced V_F drift compared to lower-voltage variants, supporting stable conduction loss in high-ambient thermal conditions. These values are measured under pulsed conditions (PW = 0.3 ms) and are critical for calculating worst-case power dissipation in automotive thermal simulations.

Does SJLWH have a specified junction capacitance, and why does it matter?

Yes, SJLWH has a typical junction capacitance (C_J) of 7 pF at 1 MHz and 4.0 V reverse bias. This low capacitance minimizes displacement current and noise coupling in high-speed switching nodes - especially important in snubber networks and EMI-sensitive DC-DC converters. It also contributes to faster reverse recovery behavior relative to higher-C_J rectifiers, reducing switching losses in moderate-frequency topologies.

Can SJLWH be used as a direct replacement for SKLWH or SMLWH in the same PCB layout?

Yes, SJLWH shares identical SOD-123W package dimensions, pinout, and thermal pad requirements with SKLWH (800 V) and SMLWH (1000 V), enabling drop-in replacement within the same footprint. However, the lower V_RRM (600 V vs. 800/1000 V) means designers must verify reverse voltage stress margins in the target circuit - SJLWH is not electrically interchangeable where peak reverse voltage exceeds 600 V, even if mechanically compatible.