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

Taiwan Semiconductor Corporation HSDLW

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

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Part No.:: HSDLW

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-123W

Datasheet:: HSDLW.pdf

Description:: 50NS, 0.8A, 200V, HIGH EFFICIENT

Quantity:: RFQ Add To RFQ list

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Inventory:20,000

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Product details

Overview

HSDLW from Taiwan Semiconductor is a 200V, 0.8A glass-passivated surface-mount silicon rectifier diode in SOD-123W package, optimized for high-efficiency DC-DC converters and switching-mode power supplies with low forward voltage (0.86 V max at 0.8A, 25°C) and fast reverse recovery (≤50 ns). It operates up to 150°C junction temperature and supports automated placement.

For engineers reviewing the HSDLW datasheet, HSDLW pinout, HSDLW application, or HSDLW equivalent, key selection criteria include its 200V repetitive peak reverse voltage, 20A surge rating, 34°C/W junction-to-lead thermal resistance, moisture sensitivity level 1 compliance, and cathode-band polarity marking - all critical for compact, thermally constrained power designs.

Technical Context

HSDLW is a single-die, unidirectional silicon PN junction rectifier with glass-passivated chip construction, enabling stable operation under repeated thermal cycling and high dv/dt conditions. Its 0.8A average forward current rating and 20A non-repetitive surge capability support transient-heavy topologies like flyback and buck-boost converters.

The device exhibits low junction capacitance (17 pF at 4V, 1MHz) and fast reverse recovery time (≤50 ns), making it suitable for high-frequency switching applications where switching losses and EMI must be minimized. Thermal performance is validated on a 5mm × 5mm copper pad PCB per JESD51-3.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse blocking voltage; defines safe operating range in DC-DC output rectification
I_F	0.8 A - Continuous forward current rating; determines steady-state power dissipation and heatsink requirements
I_FSM	20 A - Peak non-repetitive surge current (8.3 ms half-sine); enables robustness against startup inrush and fault transients
V_F @ 0.8A, 25°C	0.86 V (max) - Forward voltage drop; directly impacts conduction loss and efficiency in high-duty-cycle operation
t_rr	≤50 ns - Reverse recovery time; limits switching loss and ringing in >100 kHz SMPS designs
R_θJL	34 °C/W - Junction-to-lead thermal resistance; enables accurate thermal modeling when mounted on standard PCB copper pads
Junction Temp	−55°C to +150°C - Operating range; supports industrial and automotive under-hood ambient conditions

Pinout & Package

SOD-123W is a low-profile, surface-mount plastic package with matte tin-plated leads, UL 94V-0 molding compound, and cathode polarity indicated by a band on the case. Weight is 0.016 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of circuit (e.g., switch node in flyback secondary); requires adequate copper area for thermal relief
Cathode	Forward current exit / reverse blocking terminal	Marked by visible band; connects to output rail; reverse voltage applied here during off-state

Key Features

Feature	Design Value
Glass-passivated junction	Enhances long-term reliability and moisture resistance without requiring conformal coating in humid environments
Moisture Sensitivity Level 1	Eliminates bake requirement prior to reflow; compatible with standard SMT assembly lines without special handling
Low-profile SOD-123W package	Enables <0.9 mm board height in space-constrained modules such as PoE injectors and USB-C PD adapters
RoHS & halogen-free compliance	Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally regulated end equipment
J-STD-002 solderability	Ensures consistent wetting and joint integrity using lead-free SAC305 or SnPb pastes across production volumes

Applications

DC–DC Converter Output Rectification	Switching Mode Inverter Freewheeling
Use Scenario: Secondary-side rectification in isolated 5–24 V output DC–DC converters operating at 100–500 kHz. IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC; conducts only during positive half-cycles. Use Value: Low 0.86 V_F reduces conduction loss by ~15% vs. legacy 1N400x diodes, improving full-load efficiency by 0.8–1.2% in 12 V/1 A designs.	Use Scenario: Freewheeling path for inductive loads (e.g., motor windings, solenoids) in half-bridge inverters. IC Role / Device Role / Timing Role: Provides low-impedance return path during MOSFET off-time to clamp inductive kickback and prevent voltage overshoot. Use Value: 50 ns t_rr minimizes reverse recovery charge (Q_rr ≈ 12 nC), reducing switching loss and EMI generation compared to 100+ ns general-purpose diodes.
AC–DC Adapter Secondary Rectification	Industrial Power Supply Hold-Up Support
Use Scenario: Output rectification in compact wall-adapters and open-frame AC–DC modules delivering ≤10 W at 5–12 V. IC Role / Device Role / Timing Role: Converts transformer secondary AC to DC before bulk capacitor filtering; operates continuously under load. Use Value: SOD-123W footprint and 0.016 g weight enable ultra-thin (<12 mm) adapter profiles while maintaining 150°C T_J margin at 50°C ambient.	Use Scenario: Auxiliary hold-up rectifier in redundant power supplies where brief line dropout must sustain control logic. IC Role / Device Role / Timing Role: Conducts during main rectifier off-intervals to maintain auxiliary rail voltage; sees intermittent but high-peak current pulses. Use Value: 20 A I_FSM rating supports 10× rated current surges during 10–20 ms brownouts, preventing system reset in PLC and HMI applications.

DC–DC Converter Output Rectification

Switching Mode Inverter Freewheeling

Use Scenario: Secondary-side rectification in isolated 5–24 V output DC–DC converters operating at 100–500 kHz.

IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC output to regulated DC; conducts only during positive half-cycles.

Use Value: Low 0.86 V_F reduces conduction loss by ~15% vs. legacy 1N400x diodes, improving full-load efficiency by 0.8–1.2% in 12 V/1 A designs.

Use Scenario: Freewheeling path for inductive loads (e.g., motor windings, solenoids) in half-bridge inverters.

IC Role / Device Role / Timing Role: Provides low-impedance return path during MOSFET off-time to clamp inductive kickback and prevent voltage overshoot.

Use Value: 50 ns t_rr minimizes reverse recovery charge (Q_rr ≈ 12 nC), reducing switching loss and EMI generation compared to 100+ ns general-purpose diodes.

AC–DC Adapter Secondary Rectification

Industrial Power Supply Hold-Up Support

Use Scenario: Output rectification in compact wall-adapters and open-frame AC–DC modules delivering ≤10 W at 5–12 V.

IC Role / Device Role / Timing Role: Converts transformer secondary AC to DC before bulk capacitor filtering; operates continuously under load.

Use Value: SOD-123W footprint and 0.016 g weight enable ultra-thin (<12 mm) adapter profiles while maintaining 150°C T_J margin at 50°C ambient.

Use Scenario: Auxiliary hold-up rectifier in redundant power supplies where brief line dropout must sustain control logic.

IC Role / Device Role / Timing Role: Conducts during main rectifier off-intervals to maintain auxiliary rail voltage; sees intermittent but high-peak current pulses.

Use Value: 20 A I_FSM rating supports 10× rated current surges during 10–20 ms brownouts, preventing system reset in PLC and HMI applications.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-efficiency rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MURS0820T3G	Same SOD-123W package, 200 V V_RRM, but higher V_F (1.05 V max @ 0.8A) and slower t_rr (75 ns)	Higher conduction loss and reduced high-frequency efficiency; less suitable for >300 kHz designs	Acceptable where thermal headroom exists and cost is prioritized over efficiency
Vishay VS-2EDH02HM3/86A	Same 200 V rating and SOD-123W package, but lower I_F (0.6 A) and no published t_rr spec	Limited to lower-current applications; lacks verified fast-recovery performance for SMPS freewheeling	Only recommended for low-duty-cycle signal-level rectification, not power conversion

Compared with MURS0820T3G and VS-2EDH02HM3/86A, HSDLW delivers superior efficiency via lower V_F and faster t_rr, enabling higher power density in thermally constrained DC–DC and inverter designs without sacrificing reliability or manufacturability.

Availability

HSDLW is available at Aetrix Electronics and suitable for DC–DC converter output rectification, switching mode inverter freewheeling, and AC–DC adapter secondary rectification requiring stable component supply, consistent parametric performance, and full traceability.

Supply support for HSDLW 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 global power, automotive, and industrial markets since 1979.

HSDLW belongs to TSC's HSxLW high-efficiency rectifier family, engineered specifically for high-frequency, high-reliability power conversion in space- and thermally-constrained applications where low V_F, fast t_rr, and robust packaging are essential.

FAQ

What is the maximum junction temperature rating for HSDLW?

HSDLW has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table. This allows reliable operation in industrial environments with ambient temperatures up to 85°C when properly mounted on a 5 mm × 5 mm Cu pad. Derating curves confirm usable current capacity down to 0.4 A at 125°C ambient. The HSDLW datasheet specifies this limit under continuous forward conduction with defined thermal conditions.

Does HSDLW have a specified reverse recovery time (t_rr)?

Yes, HSDLW has a maximum reverse recovery time (t_rr) of 50 ns, measured at I_F = 0.5 A, I_R = 1.0 A, and I_RR = 0.25 A. This value is confirmed in the Electrical Specifications table and distinguishes HSDLW from general-purpose rectifiers. The fast t_rr directly reduces switching loss and EMI in high-frequency DC–DC converters where HSDLW is commonly deployed.

Is HSDLW compliant with RoHS and halogen-free standards?

Yes, HSDLW is RoHS compliant and halogen-free per IEC 61249-2-21. These compliance statements appear in the FEATURES section of the official datasheet. The device uses matte tin-plated leads and UL 94V-0 molding compound, supporting environmentally regulated end equipment including industrial automation and consumer power adapters. No exemptions apply to HSDLW.

What is the forward voltage (V_F) of HSDLW at 0.8A and 25°C?

HSDLW has a maximum forward voltage (V_F) of 1.00 V at I_F = 0.8 A and T_J = 25°C, with a typical value of 0.86 V. This parameter is explicitly listed in the Electrical Specifications table under "Forward voltage(1)" for the HSDLW variant. The low V_F contributes to reduced conduction loss in high-duty-cycle power conversion stages using HSDLW.

What package type does HSDLW use, and is it suitable for automated assembly?

HSDLW uses the SOD-123W surface-mount package, which is explicitly noted as ideal for automated placement in the FEATURES section. The package has matte tin-plated leads compliant with J-STD-002, moisture sensitivity level 1 per J-STD-020, and meets JESD201 Class 2 whisker resistance - all confirming full compatibility with standard reflow SMT lines without pre-bake or special handling.

HSDLW 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):: 200 V

Current - Average Rectified (Io):: 800mA

Voltage - Forward (Vf) (Max) @ If:: 1 V @ 800 mA

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

Reverse Recovery Time (trr):: 50 ns

Current - Reverse Leakage @ Vr:: 1 µA @ 200 V

Capacitance @ Vr, F:: 17pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123W

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

HSDLW FAQ

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

Please submit a Request for Quotation (RFQ) for HSDLW 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 HSDLW reliable?

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

3.What payment methods are accepted for HSDLW?

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

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HSDLW?

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

Once your HSDLW 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 HSDLW?

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

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

All HSDLW 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 HSDLW meets industry standards.

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

All HSDLW units undergo pre-shipment inspection (PSI). If there is an issue with HSDLW, 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 HSDLW part is unused and in its original packaging.

Return procedure for HSDLW:

1.Submit a request within 90 days.

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

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