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

Taiwan Semiconductor Corporation S1DLWH

Name: S1DLWH
Brand: Taiwan Semiconductor Corporation
SKU: S1DLWH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S1DLWH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-123W

Datasheet:: S1DLWH.pdf

Description:: 1A, 200V, STANDARD RECOVERY RECT

Quantity:: RFQ Add To RFQ list

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Inventory:19,150

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Product details

Overview

S1DLWH from Taiwan Semiconductor is a 1A, 200V standard surface-mount silicon rectifier diode in SOD-123W package, AEC-Q101 qualified, with 30A peak surge current rating and 1.1V max forward voltage at 1A/25°C - used in automotive lighting and DC-DC converter input rectification.

For engineers reviewing the S1DLWH datasheet, S1DLWH pinout, S1DLWH application, or S1DLWH equivalent, key selection factors include its 200V V_RRM, SOD-123W thermal performance (R_θJA = 80°C/W), AEC-Q101 qualification, and moisture sensitivity level 1 compliance for high-reliability surface-mount assembly.

Technical Context

The S1DLWH is a single-die, unidirectional standard recovery rectifier optimized for general-purpose and automotive power conversion where moderate switching speed and robust surge handling are required. It operates with junction temperatures from –55°C to +175°C and exhibits 8pF junction capacitance at 1MHz/4V.

Its electrical behavior is defined by a maximum 1.1V forward voltage at rated DC current, leakage current ≤1µA at 25°C and ≤50µA at 125°C under rated reverse voltage, and thermal resistance of 25°C/W junction-to-lead - enabling direct PCB heat conduction in compact layouts.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse voltage the device blocks without breakdown; sets upper limit for DC bus or snubber voltage rating.
I_F	1 A - Continuous average forward current rating at TA = 25°C; derates linearly above 25°C per forward current curve.
I_FSM	30 A - Non-repetitive peak surge current (8.3ms half-sine); supports inrush and transient overload in automotive power rails.
V_F (max)	1.1 V @ 1A, 25°C - Forward conduction loss directly impacts efficiency and thermal rise in low-voltage DC-DC stages.
T_J(max)	+175°C - Maximum junction temperature; enables operation in under-hood automotive environments with minimal heatsinking.
C_J	8 pF @ 1MHz, 4V - Junction capacitance affects high-frequency switching noise and snubber design in flyback or boost converters.

Pinout & Package

Package: SOD-123W - surface-mount, molded plastic case with matte tin-plated leads, UL 94V-0 rated, polarity indicated by cathode band, weight ≈0.019g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., transformer secondary center-tap or switch node return) in rectifier configuration.
Cathode	Forward current exit / reverse voltage blocking terminal	Connected to output rail; cathode band marking ensures correct orientation during automated placement and visual inspection.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - suitable for under-hood and lighting modules.
Moisture Sensitivity Level 1	No floor life limitation or bake requirement before reflow; compatible with standard SMT assembly lines without special handling.
High I_FSM/I_F ratio (30:1)	Robustness against line surges and load dump transients in 12V automotive systems without external protection.
Halogen-free & RoHS compliant	Meets IEC 61249-2-21 and EU RoHS Directive - supports environmental compliance for global OEM supply chains.

Applications

Automotive Lighting	DC-DC Converter Input Rectification
Use Scenario: LED headlamp and daytime running light (DRL) power supplies subjected to load dump and cold crank conditions. IC Role / Device Role / Timing Role: Primary AC/DC or DC/DC input rectifier converting switched transformer output to regulated DC bus. Use Value: 175°C T_J(max) and 30A I_FSM ensure uninterrupted operation during automotive transients without derating.	Use Scenario: Secondary-side rectification in isolated 5–24V output flyback or forward converters for infotainment and ADAS ECUs. IC Role / Device Role / Timing Role: Unidirectional current path with low V_F to minimize conduction loss and improve light-load efficiency. Use Value: 1.1V V_F(max) at 1A reduces power dissipation versus higher-V_F alternatives, easing thermal design in sealed enclosures.
Snubber Network	General-Purpose Power Supply
Use Scenario: RCD snubber across MOSFETs or IGBTs in motor drive inverters and HVAC compressor controls. IC Role / Device Role / Timing Role: Fast-recovery-capable clamp diode dissipating turn-off energy into RC network. Use Value: 8pF C_J minimizes capacitive loading on switching node while maintaining sufficient reverse blocking at 200V.	Use Scenario: Low-cost, high-volume AC-DC adapter and industrial control power supplies requiring reliable 1A rectification. IC Role / Device Role / Timing Role: General-purpose discrete rectifier replacing axial-leaded 1N400x series in space-constrained designs. Use Value: SOD-123W footprint offers 60% smaller board area than DO-214AC while retaining comparable thermal and surge capability.

Automotive Lighting

DC-DC Converter Input Rectification

Use Scenario: LED headlamp and daytime running light (DRL) power supplies subjected to load dump and cold crank conditions.

IC Role / Device Role / Timing Role: Primary AC/DC or DC/DC input rectifier converting switched transformer output to regulated DC bus.

Use Value: 175°C T_J(max) and 30A I_FSM ensure uninterrupted operation during automotive transients without derating.

Use Scenario: Secondary-side rectification in isolated 5–24V output flyback or forward converters for infotainment and ADAS ECUs.

IC Role / Device Role / Timing Role: Unidirectional current path with low V_F to minimize conduction loss and improve light-load efficiency.

Use Value: 1.1V V_F(max) at 1A reduces power dissipation versus higher-V_F alternatives, easing thermal design in sealed enclosures.

Snubber Network

General-Purpose Power Supply

Use Scenario: RCD snubber across MOSFETs or IGBTs in motor drive inverters and HVAC compressor controls.

IC Role / Device Role / Timing Role: Fast-recovery-capable clamp diode dissipating turn-off energy into RC network.

Use Value: 8pF C_J minimizes capacitive loading on switching node while maintaining sufficient reverse blocking at 200V.

Use Scenario: Low-cost, high-volume AC-DC adapter and industrial control power supplies requiring reliable 1A rectification.

IC Role / Device Role / Timing Role: General-purpose discrete rectifier replacing axial-leaded 1N400x series in space-constrained designs.

Use Value: SOD-123W footprint offers 60% smaller board area than DO-214AC while retaining comparable thermal and surge capability.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semi MUR120SFT1G	200V V_RRM, 1A I_F, but ultrafast recovery (t_rr = 75ns vs. S1DLWH's ~2µs standard recovery); higher V_F (1.3V typ)	Better suited for high-frequency SMPS (>100kHz); less optimal for snubbers or low-noise DC-DC due to faster dV/dt-induced ringing	Select when switching frequency exceeds 50kHz and reverse recovery loss dominates system efficiency.
Vishay VS-1EWH02-M3/5AT	200V V_RRM, 1A I_F, same SOD-123W package, AEC-Q101 qualified, but higher V_F (1.15V max) and lower I_FSM (25A)	Compatible drop-in for automotive lighting, but reduced surge margin in load-dump-prone circuits	Acceptable where surge margin is verified >20A; verify layout thermal relief matches 25°C/W R_θJL.

Compared with MUR120SFT1G and VS-1EWH02-M3/5AT, the S1DLWH delivers superior surge robustness (30A I_FSM) and lower conduction loss (1.1V V_F max) in 200V-class SOD-123W rectifiers - making it preferred for cost-sensitive, thermally constrained automotive and industrial DC-DC applications operating below 100kHz.

Availability

S1DLWH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter input rectification, and snubber networks requiring stable component supply across production lifecycles.

Supply support for S1DLWH 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 automotive, industrial, and consumer markets since 1979.

The S1DLWH belongs to TSC's S1xLWH family of AEC-Q101-qualified surface-mount rectifiers designed specifically for high-reliability automotive power conversion and general-purpose industrial rectification where thermal efficiency and surge resilience are critical.

FAQ

What is the maximum junction temperature rating for the S1DLWH?

The S1DLWH has a maximum junction temperature (T_J(max)) of +175°C, validated per AEC-Q101 stress test conditions. This allows sustained operation in under-hood automotive environments and high-ambient industrial settings without forced cooling. The S1DLWH maintains full electrical specifications up to this temperature, with derating applied only to forward current based on thermal resistance data in the datasheet.

Is the S1DLWH pin-compatible with other SOD-123W rectifiers like the 1N4148 or BAS16?

No - the S1DLWH is not functionally or electrically pin-compatible with signal diodes such as the 1N4148 or BAS16. While all use SOD-123W packaging, the S1DLWH is a 1A power rectifier with 200V V_RRM and 30A surge rating, whereas 1N4148/BAS16 are 200mA signal diodes with 100V V_RRM. Substitution would risk catastrophic failure under power conditions. Always verify voltage, current, and thermal ratings before replacement.

Does the S1DLWH require moisture baking before reflow soldering?

No - the S1DLWH is rated Moisture Sensitivity Level 1 (MSL-1) per J-STD-020, meaning it has unlimited floor life and does not require dry-packaging or pre-reflow baking. It can be mounted directly from tape-and-reel using standard lead-free reflow profiles, simplifying SMT line integration and reducing process overhead for high-volume automotive manufacturing.

What is the reverse leakage current specification for the S1DLWH at elevated temperature?

The S1DLWH specifies reverse leakage current (I_R) ≤1 µA at 25°C and ≤50 µA at 125°C under rated V_RRM (200V). This elevated leakage at high temperature is typical for standard recovery silicon rectifiers and must be accounted for in low-power standby circuits or precision voltage references where microamp-level leakage could affect regulation or quiescent current.

Can the S1DLWH be used in place of axial-leaded 1N4001–1N4007 diodes?

The S1DLWH provides equivalent 200V blocking and 1A average current capability as the 1N4001, but in a surface-mount SOD-123W package. However, it is not a direct mechanical or thermal replacement: the S1DLWH lacks the axial leads and through-hole mounting, and its thermal path relies on PCB copper rather than ambient convection. Use requires redesigning the footprint and verifying thermal performance via R_θJA = 80°C/W in the actual layout.

S1DLWH 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):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 1 A

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

Reverse Recovery Time (trr):: -

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

Capacitance @ Vr, F:: -

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123W

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

S1DLWH FAQ

1.How can I place an order for S1DLWH through Aetrix?

Please submit a Request for Quotation (RFQ) for S1DLWH 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 S1DLWH reliable?

The price and inventory of S1DLWH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1DLWH is usually 5 days.

3.What payment methods are accepted for S1DLWH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1DLWH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S1DLWH?

S1DLWH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S1DLWH 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 S1DLWH?

For technical support, including S1DLWH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1DLWH requirements.

6.How does Aetrix verify that S1DLWH is sourced from the original manufacturer or authorized distributors?

All S1DLWH 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 S1DLWH meets industry standards.

7.What is the process for return or replacement of S1DLWH?

All S1DLWH units undergo pre-shipment inspection (PSI). If there is an issue with S1DLWH, 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 S1DLWH part is unused and in its original packaging.

Return procedure for S1DLWH:

1.Submit a request within 90 days.

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

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