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

Taiwan Semiconductor Corporation HSMLWH

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

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Part No.:: HSMLWH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-123W

Datasheet:: HSMLWH.pdf

Description:: 75NS, 0.8A, 1000V, HIGH EFFICIEN

Quantity:: RFQ Add To RFQ list

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Inventory:18,940

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Product details

Overview

HSMLWH from Taiwan Semiconductor is a 1000V, 0.8A surface-mount high-efficiency rectifier diode in SOD-123W package, featuring glass-passivated junction, AEC-Q101 qualification, and 75ns reverse recovery time; used in automotive freewheeling and DC-DC converter snubber circuits.

For engineers reviewing the HSMLWH datasheet, HSMLWH pinout, HSMLWH application, or HSMLWH equivalent, key selection criteria include peak reverse voltage (1000V), forward voltage at 0.8A/25°C (1.31–1.70V), thermal resistance (R_θJA = 86°C/W), and AEC-Q101 compliance for under-hood automotive use.

Technical Context

The HSMLWH is a single-die, unidirectional silicon rectifier optimized for high-voltage switching applications. Its 1000V V_RRM, 20A I_FSM, and 75ns trr support fast transient response in snubber and freewheeling paths where voltage clamping and low recovery loss are critical.

Designed with glass passivation and matte tin-plated leads, it meets JESD201 Class 2 whisker resistance and J-STD-020 moisture sensitivity Level 1. Thermal performance is characterized on a 5mm × 5mm Cu pad PCB, delivering R_θJL = 34°C/W and R_θJC = 35°C/W.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1000 V - Maximum repetitive reverse blocking voltage; enables use in 800V DC bus systems with safety margin.
I_F	0.8 A - Continuous forward current rating; defines steady-state power dissipation capability (P_D ≈ 1.0–1.4 W at 25°C).
I_FSM	20 A - Non-repetitive surge current (8.3 ms half-sine); supports inrush and fault-current handling in automotive power stages.
t_rr	75 ns - Reverse recovery time; reduces switching losses and EMI in high-frequency DC-DC converters.
C_J	5 pF - Junction capacitance at 1 MHz / 4 V; minimizes capacitive coupling and improves high-speed turn-off behavior.
T_J max	150 °C - Maximum junction temperature; allows operation in under-hood environments with derating per Fig.1.
R_θJA	86 °C/W - Junction-to-ambient thermal resistance on standard test board; informs heatsinking requirements for sustained 0.8A load.

Pinout & Package

Package: SOD-123W - Low-profile, surface-mount plastic case with cathode band polarity marking; UL 94V-0 rated molding compound; 0.016g weight; compatible with automated placement.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of load or switch node; requires trace width sufficient for 0.8A continuous + surge.
Cathode	Forward current exit / reverse-blocking terminal	Marked by band; ties to higher-potential rail or switch drain/source; must withstand 1000V transient spikes.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD; suitable for engine control and lighting modules.
Glass-passivated junction	Enhances long-term stability and humidity resistance; prevents leakage current drift in humid under-hood conditions.
Low-profile SOD-123W package	Enables compact layout in space-constrained modules (e.g., LED drivers, ECU power supplies) without sacrificing thermal performance.
Junction capacitance ≤5 pF	Reduces displacement current during high-dv/dt switching, lowering EMI generation in 100–500 kHz DC-DC topologies.
Moisture sensitivity Level 1	Eliminates bake requirement prior to reflow; supports standard SMT assembly without process modification.

Applications

Automotive Freewheeling	DC-DC Converter Snubber
Use Scenario: Flyback diode across relay coils or inductive loads in vehicle body control modules. IC Role / Device Role / Timing Role: Freewheeling diode providing safe path for inductive kickback energy. Use Value: 1000V V_RRM and 20A I_FSM ensure robust clamping of >600V transients common in 12V/24V automotive systems.	Use Scenario: RC snubber network across MOSFETs in isolated flyback or forward converters. IC Role / Device Role / Timing Role: High-voltage clamp diode absorbing switching node ringing. Use Value: 75ns t_rr and 5pF C_J minimize snubber losses and improve waveform fidelity at 250kHz+ switching frequencies.
Car Lighting Power Supply	Industrial AC-DC Input Stage
Use Scenario: Output rectification in constant-current LED driver modules for headlamps or DRLs. IC Role / Device Role / Timing Role: Main output rectifier converting transformer secondary AC to regulated DC. Use Value: AEC-Q101 qualification and 150°C T_J max support continuous operation in sealed, thermally limited lamp housings.	Use Scenario: Bridge rectifier input stage in industrial SMPS with wide-input AC or PFC front-end. IC Role / Device Role / Timing Role: High-voltage discrete rectifier replacing legacy axial devices in compact designs. Use Value: SOD-123W footprint enables direct replacement of larger packages while maintaining 1000V blocking and 0.8A output capability.

Automotive Freewheeling

DC-DC Converter Snubber

Use Scenario: Flyback diode across relay coils or inductive loads in vehicle body control modules.

IC Role / Device Role / Timing Role: Freewheeling diode providing safe path for inductive kickback energy.

Use Value: 1000V V_RRM and 20A I_FSM ensure robust clamping of >600V transients common in 12V/24V automotive systems.

Use Scenario: RC snubber network across MOSFETs in isolated flyback or forward converters.

IC Role / Device Role / Timing Role: High-voltage clamp diode absorbing switching node ringing.

Use Value: 75ns t_rr and 5pF C_J minimize snubber losses and improve waveform fidelity at 250kHz+ switching frequencies.

Car Lighting Power Supply

Industrial AC-DC Input Stage

Use Scenario: Output rectification in constant-current LED driver modules for headlamps or DRLs.

IC Role / Device Role / Timing Role: Main output rectifier converting transformer secondary AC to regulated DC.

Use Value: AEC-Q101 qualification and 150°C T_J max support continuous operation in sealed, thermally limited lamp housings.

Use Scenario: Bridge rectifier input stage in industrial SMPS with wide-input AC or PFC front-end.

IC Role / Device Role / Timing Role: High-voltage discrete rectifier replacing legacy axial devices in compact designs.

Use Value: SOD-123W footprint enables direct replacement of larger packages while maintaining 1000V blocking and 0.8A output capability.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-1N5819HM3/85A	40V V_RRM, 1A I_F, Schottky; no AEC-Q101, higher leakage at 125°C.	Not suitable for >100V reverse stress; limited to low-voltage DC-DC outputs.	Select only for <50V applications requiring ultra-low VF; not a substitute for HSMLWH's 1000V capability.
ON Semiconductor MUR105	50V V_RRM, 1A I_F, ultrafast recovery (~50ns); TO-220 package, no AEC-Q101.	Requires through-hole mounting and heatsink; incompatible with SMT automotive production flow.	Use only in non-automotive, higher-power bench prototypes where board space and qualification are not constraints.

Compared with VS-1N5819HM3/85A and MUR105, the HSMLWH uniquely combines 1000V blocking, AEC-Q101 qualification, SOD-123W SMT compatibility, and automotive-grade thermal specs-making it the sole option for space-limited, high-reliability 12–48V system snubbers and freewheeling paths.

Availability

HSMLWH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter snubbers, and industrial freewheeling applications requiring stable component supply, AEC-Q101 compliance, and consistent SOD-123W packaging.

Supply support for HSMLWH 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 rectifiers, TVS diodes, and automotive-qualified components.

The HSMLWH belongs to TSC's HSxLWH high-voltage rectifier family, designed specifically for AEC-Q101-compliant automotive power conversion and protection circuits where reliability, compact SMT form factor, and 1000V blocking are mandatory.

FAQ

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

The HSMLWH has a maximum repetitive peak reverse voltage (V_RRM) of 1000 V, verified per datasheet Table "ABSOLUTE MAXIMUM RATINGS" and confirmed across all electrical characterization curves. This rating ensures reliable operation in 800V DC bus applications with appropriate design margin. The HSMLWH maintains this rating across its full operating junction temperature range of –55°C to +150°C.

Is HSMLWH qualified for automotive applications?

Yes, HSMLWH is AEC-Q101 qualified, as explicitly stated in the FEATURES section of the official Taiwan Semiconductor datasheet. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), making HSMLWH suitable for under-hood automotive modules such as body control units and LED lighting drivers.

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

At 0.8A forward current and 25°C junction temperature, the HSMLWH exhibits a typical forward voltage (V_F) of 1.31 V and a maximum of 1.70 V, per the ELECTRICAL SPECIFICATIONS table. These values are measured under pulse conditions (PW = 0.3ms) and reflect the device's silicon carbide–free, high-voltage planar junction design.

Does HSMLWH have a defined reverse recovery time?

Yes, HSMLWH has a specified reverse recovery time (t_rr) of 75 ns maximum, measured at I_F = 0.5A, I_R = 1.0A, and I_rr = 0.25A. This value is documented in the ELECTRICAL SPECIFICATIONS table and applies to the HSJLWH through HSMLWH variants. It enables efficient operation in high-frequency switching circuits up to 500 kHz.

What package type does HSMLWH use, and is it RoHS compliant?

HSMLWH uses the SOD-123W surface-mount package, with matte tin-plated leads and UL 94V-0 flammability-rated molding compound. It is RoHS compliant and halogen-free per IEC 61249-2-21, as confirmed in the FEATURES section. Moisture sensitivity is rated Level 1 per J-STD-020, eliminating pre-reflow baking requirements.

HSMLWH 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):: 1000 V

Current - Average Rectified (Io):: 800mA

Voltage - Forward (Vf) (Max) @ If:: 1.7 V @ 800 mA

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

Reverse Recovery Time (trr):: 75 ns

Current - Reverse Leakage @ Vr:: 1 µA @ 1000 V

Capacitance @ Vr, F:: 5pF @ 4V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123W

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

HSMLWH FAQ

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

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

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

3.What payment methods are accepted for HSMLWH?

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

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HSMLWH?

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

Once your HSMLWH 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 HSMLWH?

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

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

All HSMLWH 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 HSMLWH meets industry standards.

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

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

Return procedure for HSMLWH:

1.Submit a request within 90 days.

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

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