Taiwan Semiconductor Corporation ESDLW

Overview

ESDLW from Taiwan Semiconductor is a 0.8A, 200V repetitive peak reverse voltage (V_RRM) super fast surface-mount rectifier in SOD-123W package, featuring 35ns reverse recovery time (t_rr), 0.85V forward voltage at 0.8A/25°C, and 21pF junction capacitance at 1MHz/4V - used in DC-DC converters and freewheeling paths where low-loss switching is required.

For engineers reviewing the ESDLW datasheet, ESDLW pinout, ESDLW application, or ESDLW equivalent, key selection criteria include its 200V V_RRM, 20A I_FSM surge rating, SOD-123W low-profile footprint, J-STD-020 Level 1 moisture sensitivity, and verified thermal resistance (R_θJL = 34°C/W) on standard PCB mounting.

Technical Context

The ESDLW is a single-die, glass-passivated silicon PN junction rectifier optimized for high-frequency switching applications. Its 35ns t_rr enables efficient operation in SMPS topologies, while the 0.85V V_F at rated current supports low conduction loss at 0.8A average forward current.

Thermally, it delivers R_θJL = 34°C/W and R_θJA = 88°C/W when mounted on a 5mm × 5mm copper pad, with maximum junction temperature of 150°C and storage range from –55°C to +150°C - confirming suitability for industrial ambient conditions.

Key Specifications

Pinout & Package

SOD-123W is a low-profile, surface-mount plastic package with cathode-indicated band marking, matte tin-plated leads compliant with J-STD-002 solderability, and UL 94V-0 molding compound. Weight is 0.016g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH0.8L02 and MBR0520L, the ESDLW offers optimal balance of 200V blocking, 35ns speed, and 0.85V conduction loss in a standard SOD-123W footprint - making it preferred for cost-sensitive 200V-class SMPS where Schottky limitations preclude use.

Availability

ESDLW is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and freewheeling circuits requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for ESDLW 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 device manufacturer headquartered in Hsinchu, Taiwan, serving industrial, computing, and consumer markets since 1979.

The ESDLW belongs to TSC's ESxLW super fast rectifier family, designed specifically for high-efficiency, high-frequency switching power supplies where low reverse recovery charge and tight V_F tolerance are essential.

FAQ

What is the maximum repetitive peak reverse voltage rating for ESDLW?

The ESDLW has a maximum repetitive peak reverse voltage (V_RRM) rating of 200 V, as confirmed in the Absolute Maximum Ratings table. This value is fixed for the ESDLW variant and distinguishes it from higher-voltage variants like ESGLW (400 V) and ESJLW (600 V). Operating above 200 V risks irreversible avalanche breakdown. The ESDLW must be selected only in designs where peak reverse transients remain within this limit.

Does ESDLW have a defined reverse recovery time, and how is it measured?

Yes, the ESDLW specifies a maximum reverse recovery time (t_rr) of 35 ns, measured under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A per the Electrical Specifications table. This parameter is critical for high-frequency switching efficiency and was validated using standardized pulse test waveforms. The ESDLW's 35 ns t_rr makes it suitable for applications up to several megahertz.

What package type does ESDLW use, and what are its mechanical identifiers?

The ESDLW uses the SOD-123W surface-mount package, identified by its low-profile outline, cathode band marking, matte tin-plated leads, and UL 94V-0 compliant molding compound. Its dimensions and suggested PCB pad layout are documented in the Package Outline Dimensions section. The SOD-123W footprint is industry-standard and compatible with automated assembly processes without special tooling.

Is ESDLW compliant with RoHS and halogen-free standards?

Yes, the ESDLW is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section. It contains no brominated flame retardants or chlorine-based compounds above threshold limits. This compliance is verified through material declarations and applies to all units shipped under ordering code ESDLW in SOD-123W tape-and-reel packaging.

What is the junction-to-lead thermal resistance (R_θJL) of ESDLW, and how is it measured?

The ESDLW has a typical junction-to-lead thermal resistance (R_θJL) of 34°C/W, measured with the device mounted on a standard 5 mm × 5 mm copper pad test board per JEDEC standards. This value reflects real-world PCB-level heat transfer efficiency and supports thermal design without external heatsinking for ≤0.8A continuous operation at ambient temperatures up to 70°C.