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

Taiwan Semiconductor Corporation S15KLWH

Name: S15KLWH
Brand: Taiwan Semiconductor Corporation
SKU: S15KLWH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S15KLWH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-123W

Datasheet:: S15KLWH.pdf

Description:: 1.5A, 800V, STANDARD RECOVERY RE

Quantity:: RFQ Add To RFQ list

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Inventory:20,000

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Product details

Overview

S15KLWH from Taiwan Semiconductor is a 1.5A, 800V repetitive peak reverse voltage (V_RRM) surface-mount standard rectifier in SOD-123W package, featuring 50A peak surge current (I_FSM), 175°C maximum junction temperature, and AEC-Q101 qualification for automotive-grade reliability - used in DC-DC converters and snubber circuits.

For engineers reviewing the S15KLWH datasheet, S15KLWH pinout, S15KLWH application, or S15KLWH equivalent, key selection factors include its 800V V_RRM, 1.10V max forward voltage at 1.5A/25°C, moisture sensitivity level 1 rating, RoHS/halogen-free compliance, and SOD-123W thermal performance (R_θJA = 85°C/W).

Technical Context

The S15KLWH is a single-die, unidirectional silicon PN junction rectifier optimized for high-efficiency power conversion in space-constrained layouts. Its SOD-123W package enables automated placement while maintaining robust thermal dissipation via low R_θJL (29°C/W) and R_θJC (31°C/W).

It delivers stable reverse blocking up to 800V with leakage current ≤1µA at 25°C and ≤100µA at 125°C, and exhibits low capacitance (C_J = 10pF @ 1MHz, 4V) suitable for moderate-frequency switching applications like automotive lighting and snubbers.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	800 V - Maximum reverse voltage the device blocks continuously without breakdown.
I_F	1.5 A - Continuous average forward current rating under specified thermal conditions.
I_FSM	50 A - Peak non-repetitive surge current capability for 8.3ms half-sine, critical for transient protection.
V_F (max)	1.10 V @ 1.5A, 25°C - Directly impacts conduction loss and thermal rise in power stages.
T_J (max)	+175 °C - Enables operation in under-hood automotive environments without derating.
R_θJA	85 °C/W - Thermal resistance from junction to ambient on 5mm × 5mm Cu pad, defines heatsinking requirements.
C_J	10 pF @ 1MHz, 4V - Low junction capacitance minimizes switching losses and EMI in snubber networks.

Pinout & Package

Package: SOD-123W - Surface-mount plastic case with matte tin-plated leads, UL 94V-0 rated molding compound, cathode band polarity marking, and 0.019g weight.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of circuit; must handle full I_F and I_FSM current stress.
Cathode	Forward current exit / reverse blocking terminal	Marked by band; carries reverse voltage up to 800V and defines directionality in DC-DC and snubber paths.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive electronics use per stress test requirements including HTOL, TC, and HAST.
Moisture sensitivity level 1	No floor life limitation or baking required before reflow, simplifying SMT line integration.
High surge current capability (50A)	Withstands inrush and fault transients in automotive lighting and DC-DC startup without failure.
Low forward voltage (1.10V max)	Reduces conduction loss and improves system efficiency in 12V/24V automotive power rails.
Halogen-free & RoHS compliant	Meets IEC 61249-2-21 and EU RoHS Directive for environmentally regulated supply chains.

Applications

Automotive Lighting	DC-DC Converter Output Rectification
Use Scenario: LED headlamp and tail lamp driver modules requiring reliable, compact rectification in high-temperature engine bay environments. IC Role / Device Role / Timing Role: Standard rectifier providing unidirectional current path and reverse voltage blocking during PWM dimming cycles. Use Value: AEC-Q101 qualification and 175°C T_J(max) ensure long-term reliability under thermal cycling and vibration stress.	Use Scenario: Secondary-side rectification in isolated flyback or forward converters powering infotainment and ADAS subsystems. IC Role / Device Role / Timing Role: Freewheeling diode conducting output current during switch-off phase, defining converter efficiency and thermal load. Use Value: 1.10V V_F(max) minimizes conduction loss, while 50A I_FSM handles output capacitor charging surges.
Snubber Network	General-Purpose AC/DC Rectification
Use Scenario: RC snubber across MOSFET/IGBT switches in motor control inverters to suppress voltage spikes and reduce EMI. IC Role / Device Role / Timing Role: Fast-recovery-capable rectifier clamping transient energy into the snubber capacitor during switching transitions. Use Value: 10pF C_J and low leakage (<1µA @ 25°C) maintain snubber timing accuracy and minimize standby power loss.	Use Scenario: Input bridge or output rectification in industrial power supplies, battery chargers, and auxiliary power modules. IC Role / Device Role / Timing Role: General-purpose discrete rectifier converting AC to DC with stable 800V reverse blocking and predictable thermal behavior. Use Value: SOD-123W footprint enables high-density PCB layout, while R_θJA = 85°C/W supports natural convection cooling in sealed enclosures.

Automotive Lighting

DC-DC Converter Output Rectification

Use Scenario: LED headlamp and tail lamp driver modules requiring reliable, compact rectification in high-temperature engine bay environments.

IC Role / Device Role / Timing Role: Standard rectifier providing unidirectional current path and reverse voltage blocking during PWM dimming cycles.

Use Value: AEC-Q101 qualification and 175°C T_J(max) ensure long-term reliability under thermal cycling and vibration stress.

Use Scenario: Secondary-side rectification in isolated flyback or forward converters powering infotainment and ADAS subsystems.

IC Role / Device Role / Timing Role: Freewheeling diode conducting output current during switch-off phase, defining converter efficiency and thermal load.

Use Value: 1.10V V_F(max) minimizes conduction loss, while 50A I_FSM handles output capacitor charging surges.

Snubber Network

General-Purpose AC/DC Rectification

Use Scenario: RC snubber across MOSFET/IGBT switches in motor control inverters to suppress voltage spikes and reduce EMI.

IC Role / Device Role / Timing Role: Fast-recovery-capable rectifier clamping transient energy into the snubber capacitor during switching transitions.

Use Value: 10pF C_J and low leakage (<1µA @ 25°C) maintain snubber timing accuracy and minimize standby power loss.

Use Scenario: Input bridge or output rectification in industrial power supplies, battery chargers, and auxiliary power modules.

IC Role / Device Role / Timing Role: General-purpose discrete rectifier converting AC to DC with stable 800V reverse blocking and predictable thermal behavior.

Use Value: SOD-123W footprint enables high-density PCB layout, while R_θJA = 85°C/W supports natural convection cooling in sealed enclosures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STPS1H100S	1A, 100V Schottky; lower V_F (~0.55V), no AEC-Q101, higher leakage at 125°C	Not rated for >100V reverse blocking; unsuitable for 800V snubber or automotive input stages	Select only for low-voltage, high-efficiency DC-DC where V_RRM ≤ 100V suffices.
ON Semi MUR160	1A, 600V ultrafast recovery; TO-220AC package; higher V_F (1.7V), larger footprint, no AEC-Q101	Requires heatsink; incompatible with SMT automation; not qualified for automotive under-hood use	Use only in through-hole designs needing faster recovery than standard rectifiers but lacking SMT constraints.

Compared with STPS1H100S and MUR160, the S15KLWH uniquely combines 800V V_RRM, AEC-Q101 qualification, SOD-123W SMT compatibility, and 1.10V V_F(max), making it the only drop-in solution for space-limited, high-reliability automotive rectification where both voltage rating and qualification matter.

Availability

S15KLWH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter output rectification, and snubber network design requiring stable component supply, consistent AEC-Q101 compliance, and SOD-123W footprint continuity.

Supply support for S15KLWH 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 automotive, industrial, and consumer markets since 1979.

The S15KLWH belongs to TSC's AEC-Q101-qualified S15xLWH standard rectifier family, engineered specifically for high-reliability, surface-mount power conversion in automotive and industrial environments where thermal robustness and process consistency are critical.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for S15KLWH?

The S15KLWH has a V_RRM of 800 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version A2103). This value is fixed for the "K" variant in the S15xLWH series and defines the highest continuous reverse voltage the S15KLWH can block without breakdown under normal operating conditions.

Is S15KLWH qualified for automotive applications?

Yes, the S15KLWH is explicitly AEC-Q101 qualified per the manufacturer's documentation. This qualification covers stress tests including high-temperature operating life (HTOL), temperature cycling (TC), and highly accelerated stress test (HAST), confirming its suitability for under-hood and safety-critical automotive systems such as lighting and power conversion modules.

What is the forward voltage (V_F) of S15KLWH at 1.5A and 25°C?

The S15KLWH has a maximum forward voltage of 1.10 V at 1.5A and 25°C, as specified in the Electrical Specifications table. The typical value is 0.98 V under the same conditions. This parameter directly affects conduction loss and thermal performance in power stage designs using the S15KLWH.

What package type does S15KLWH use, and what are its key mechanical features?

The S15KLWH uses the SOD-123W surface-mount package. Key mechanical features include matte tin-plated leads (solderable per J-STD-002), UL 94V-0 flammability-rated molding compound, cathode band polarity marking, and a weight of approximately 0.019 g. It meets JESD 201 Class 2 whisker resistance and moisture sensitivity level 1 per J-STD-020.

Does S15KLWH have halogen-free and RoHS compliance certifications?

Yes, the S15KLWH is both RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as stated in the FEATURES section of the official datasheet. These environmental qualifications are verified and documented by Taiwan Semiconductor for all units shipped under the S15KLWH ordering code.

S15KLWH 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):: 800 V

Current - Average Rectified (Io):: 1.5A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 1.5 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 1 µA @ 800 V

Capacitance @ Vr, F:: 10pF @ 4V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123W

Operating Temperature - Junction:: -55°C ~ 175°C

S15KLWH FAQ

1.How can I place an order for S15KLWH through Aetrix?

Please submit a Request for Quotation (RFQ) for S15KLWH 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 S15KLWH reliable?

The price and inventory of S15KLWH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S15KLWH is usually 5 days.

3.What payment methods are accepted for S15KLWH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S15KLWH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S15KLWH?

S15KLWH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S15KLWH 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 S15KLWH?

For technical support, including S15KLWH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S15KLWH requirements.

6.How does Aetrix verify that S15KLWH is sourced from the original manufacturer or authorized distributors?

All S15KLWH 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 S15KLWH meets industry standards.

7.What is the process for return or replacement of S15KLWH?

All S15KLWH units undergo pre-shipment inspection (PSI). If there is an issue with S15KLWH, 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 S15KLWH part is unused and in its original packaging.

Return procedure for S15KLWH:

1.Submit a request within 90 days.

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

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