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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation ESGLW

Name: ESGLW
Brand: Taiwan Semiconductor Corporation
SKU: ESGLW
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ESGLW

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-123W

Datasheet:: ESGLW.pdf

Description:: DIODE GP 400V 800MA SOD123W

Quantity:: RFQ Add To RFQ list

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Inventory:20,000

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Product details

Overview

ESGLW from Taiwan Semiconductor is a 400 V repetitive peak reverse voltage, 0.8 A average forward current super fast surface-mount rectifier in SOD-123W package, featuring 35 ns reverse recovery time, 0.96 V typical forward voltage at 0.8 A and 25°C, and 150°C maximum junction temperature - used in switching mode power supplies for freewheeling and output rectification.

For engineers reviewing the ESGLW datasheet, ESGLW pinout, ESGLW application, or ESGLW equivalent, key selection criteria include reverse voltage rating (400 V), thermal resistance (R_θJL = 34°C/W), low-profile SOD-123W footprint compatibility, and verified performance under 125°C junction conditions in DC-DC converters.

Technical Context

The ESGLW is a single-die, glass-passivated silicon PN junction rectifier optimized for high-frequency switching applications. Its 35 ns reverse recovery time and low junction capacitance (20 pF at 1 MHz, 4 V) support efficient operation in SMPS operating up to several hundred kHz.

Thermal design is enabled by R_θJL = 34°C/W and R_θJA = 88°C/W on a 5 mm × 5 mm copper pad, with moisture sensitivity level 1 per J-STD-020 and matte tin-plated leads compliant with J-STD-002 solderability requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - supports input/output isolation in 28 V–48 V industrial DC-DC stages with 2× safety margin
I_F	0.8 A continuous - suitable for low-power auxiliary rails and bias supplies
t_rr	35 ns max - enables clean commutation in 200–500 kHz flyback and buck converters
V_F @ 0.8 A, 25°C	0.96 V typ / 1.30 V max - limits conduction loss to ≤1.04 W at full load
R_θJL	34°C/W - allows direct thermal path to PCB copper, reducing heatsinking need
Junction temp range	−55°C to +150°C - qualified for extended-temperature industrial environments

Pinout & Package

SOD-123W surface-mount package: low-profile (1.1 mm max height), cathode-indicated by band, matte tin-plated leads, UL 94V-0 molding compound, 0.016 g weight.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node in flyback secondary or buck low-side)
Cathode	Forward current exit / reverse blocking terminal	Marked by band; ties to output rail or filter capacitor positive; blocks 400 V reverse during off-state

Key Features

Feature	Design Value
Glass passivated junction	Ensures long-term reliability and stable leakage current (<1 µA @ 25°C, <150 µA @ 125°C) across humidity and thermal cycling
Super fast recovery (t_rr ≤ 35 ns)	Minimizes switching loss and EMI generation in high-frequency converters without snubber circuits
SOD-123W low-profile package	Enables compact layout in space-constrained modules (e.g., PoE injectors, LED drivers) with standard pick-and-place compatibility
Moisture sensitivity level 1	Eliminates bake requirement prior to reflow, supporting standard assembly flow without handling restrictions

Applications

DC-DC Converter Output Rectification	Freewheeling Diode in Buck Regulators
Use Scenario: Secondary-side rectification in isolated 12 V/0.5 A flyback converter powering industrial I/O modules. IC Role / Device Role / Timing Role: Unidirectional current path delivering regulated DC output; conducts only during transformer reset phase. Use Value: 0.96 V V_F at 0.8 A reduces conduction loss by ~18% vs. standard FR1 diodes, improving efficiency at light-to-moderate loads.	Use Scenario: Freewheeling path for 0.8 A inductor current in non-synchronous 5 V buck regulator for MCU power rail. IC Role / Device Role / Timing Role: Provides low-loss return path during high-side MOSFET off-time; must recover before next switching cycle. Use Value: 35 ns t_rr prevents reverse recovery current overlap with high-side switch turn-on, reducing shoot-through risk and EMI.
Switching Inverter Auxiliary Supply	Isolated Gate Driver Bias Supply
Use Scenario: Rectifying 24 V AC auxiliary winding output in 3-phase motor inverter control board. IC Role / Device Role / Timing Role: Converts AC auxiliary winding voltage to stable DC for logic and sensor bias; operates continuously at 60°C ambient. Use Value: 150°C T_JMAX and −55°C to +150°C storage range ensure uninterrupted function across industrial temperature extremes.	Use Scenario: Generating isolated +15 V bias for high-side IGBT gate driver in solar string inverter half-bridge stage. IC Role / Device Role / Timing Role: Delivers low-noise, low-leakage DC after transformer secondary; must withstand 400 V transients during fault events. Use Value: 400 V V_RRM provides 2× margin over nominal 200 V reflected transient, meeting IEC 61000-4-5 surge immunity requirements.

DC-DC Converter Output Rectification

Freewheeling Diode in Buck Regulators

Use Scenario: Secondary-side rectification in isolated 12 V/0.5 A flyback converter powering industrial I/O modules.

IC Role / Device Role / Timing Role: Unidirectional current path delivering regulated DC output; conducts only during transformer reset phase.

Use Value: 0.96 V V_F at 0.8 A reduces conduction loss by ~18% vs. standard FR1 diodes, improving efficiency at light-to-moderate loads.

Use Scenario: Freewheeling path for 0.8 A inductor current in non-synchronous 5 V buck regulator for MCU power rail.

IC Role / Device Role / Timing Role: Provides low-loss return path during high-side MOSFET off-time; must recover before next switching cycle.

Use Value: 35 ns t_rr prevents reverse recovery current overlap with high-side switch turn-on, reducing shoot-through risk and EMI.

Switching Inverter Auxiliary Supply

Isolated Gate Driver Bias Supply

Use Scenario: Rectifying 24 V AC auxiliary winding output in 3-phase motor inverter control board.

IC Role / Device Role / Timing Role: Converts AC auxiliary winding voltage to stable DC for logic and sensor bias; operates continuously at 60°C ambient.

Use Value: 150°C T_JMAX and −55°C to +150°C storage range ensure uninterrupted function across industrial temperature extremes.

Use Scenario: Generating isolated +15 V bias for high-side IGBT gate driver in solar string inverter half-bridge stage.

IC Role / Device Role / Timing Role: Delivers low-noise, low-leakage DC after transformer secondary; must withstand 400 V transients during fault events.

Use Value: 400 V V_RRM provides 2× margin over nominal 200 V reflected transient, meeting IEC 61000-4-5 surge immunity requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH1R04U	400 V V_RRM, 1.0 A I_F, 30 ns t_rr, DO-214AC package (larger footprint)	Higher current rating but requires PCB area increase; higher thermal mass slows response in ultra-fast designs	Choose when >0.8 A average current or higher surge tolerance (I_FSM = 30 A) is required
MBR0540T1G	40 V V_RRM, 0.5 A I_F, Schottky architecture, 0.55 V V_F, SOD-123 package	Lower V_F but insufficient reverse voltage for 400 V applications; unsuitable for primary-side or high-V_IN use	Only viable in low-voltage (<60 V) synchronous rectification where reverse voltage stress is minimal

Compared with STTH1R04U and MBR0540T1G, the ESGLW uniquely balances 400 V capability, SOD-123W compactness, and 35 ns recovery in a moisture-level-1, halogen-free construction - making it optimal for space- and reliability-critical 0.8 A industrial SMPS designs where footprint and assembly simplicity are prioritized over marginal V_F reduction or extreme surge rating.

Availability

ESGLW is available at Aetrix Electronics and suitable for DC-DC converters, switching inverters, freewheeling circuits, and isolated bias supplies requiring stable component supply, consistent parametric performance, and RoHS/halogen-free compliance.

Supply support for ESGLW 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 industrial, computing, and consumer markets since 1979.

The ESGLW belongs to TSC's ESxLW super fast rectifier family, engineered specifically for high-efficiency, high-frequency switching power conversion where low recovery time, tight thermal resistance, and automated assembly compatibility are critical.

FAQ

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

The ESGLW has a specified repetitive peak reverse voltage (V_RRM) of 400 V, validated per JEDEC test conditions and confirmed in the Absolute Maximum Ratings table. This rating defines the highest reverse voltage the device can block repeatedly without breakdown under normal operating conditions, and is distinct from non-repetitive surge ratings. The ESGLW must not be operated beyond this limit in continuous reverse-bias applications.

Does ESGLW have a specified reverse recovery time, and under what test conditions?

Yes, the ESGLW specifies a maximum reverse recovery time (t_rr) of 35 ns. This value is measured under the condition: forward current I_F = 0.5 A, reverse current I_R = 1.0 A, and reverse recovery current I_RR = 0.25 A, per the Electrical Specifications section. The measurement uses pulse testing with defined rise/fall times and is representative of performance in typical SMPS switching waveforms.

What is the forward voltage drop of ESGLW at 0.8 A and 25°C?

The ESGLW exhibits a typical forward voltage (V_F) of 0.96 V and a maximum of 1.30 V at I_F = 0.8 A and T_J = 25°C, as documented in the Electrical Specifications table. At elevated junction temperature (125°C), V_F decreases to 0.77 V typical / 1.05 V max under the same current, reflecting the negative temperature coefficient of silicon PN junctions.

Is ESGLW compatible with lead-free reflow soldering processes?

Yes, the ESGLW features matte tin-plated leads qualified per J-STD-002 for solderability and is rated for lead-free reflow profiles. Its moisture sensitivity level is Class 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH without baking prior to assembly - fully supporting standard Pb-free manufacturing flows without special handling.

What package type does ESGLW use, and what are its key mechanical attributes?

The ESGLW is housed in the SOD-123W surface-mount package: a low-profile variant of SOD-123 with 1.1 mm maximum height, UL 94V-0 flammability-rated epoxy molding, cathode polarity indicated by a visible band, and 0.016 g unit weight. Its dimensions and pad layout comply with industry-standard SOD-123W footprints, enabling drop-in replacement in existing designs using that outline.

ESGLW Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: SOD-123W

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 400 V

Current - Average Rectified (Io):: 800mA

Voltage - Forward (Vf) (Max) @ If:: 1.3 V @ 800 mA

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: 35 ns

Current - Reverse Leakage @ Vr:: 1 µA @ 400 V

Capacitance @ Vr, F:: 20pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123W

Operating Temperature - Junction:: -55°C ~ 150°C

ESGLW FAQ

1.How can I place an order for ESGLW through Aetrix?

Please submit a Request for Quotation (RFQ) for ESGLW on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for ESGLW reliable?

The price and inventory of ESGLW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESGLW is usually 5 days.

3.What payment methods are accepted for ESGLW?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESGLW transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ESGLW?

ESGLW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ESGLW order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for ESGLW?

For technical support, including ESGLW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESGLW requirements.

6.How does Aetrix verify that ESGLW is sourced from the original manufacturer or authorized distributors?

All ESGLW products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ESGLW meets industry standards.

7.What is the process for return or replacement of ESGLW?

All ESGLW units undergo pre-shipment inspection (PSI). If there is an issue with ESGLW, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The ESGLW part is unused and in its original packaging.

Return procedure for ESGLW:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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