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

Taiwan Semiconductor Corporation S15DLW

Name: S15DLW
Brand: Taiwan Semiconductor Corporation
SKU: S15DLW
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S15DLW

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: SOD-123W

Datasheet:: S15DLW.pdf

Description:: 1.5A, 200V, STANDARD RECOVERY RE

Quantity:: RFQ Add To RFQ list

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Inventory:10,000

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Product details

Overview

S15DLW from Taiwan Semiconductor is a 1.5A, 200V standard surface-mount silicon rectifier diode in SOD-123W package, featuring 50A peak surge current capability, 1.05V max forward voltage at 1.5A/25°C, and 175°C maximum junction temperature - deployed in DC-DC converters and switching-mode power supplies.

For engineers reviewing the S15DLW datasheet, S15DLW pinout, S15DLW application, or S15DLW equivalent, key selection criteria include repetitive peak reverse voltage (200V), thermal resistance (R_θJA = 85°C/W), moisture sensitivity level (MSL 1), RoHS/halogen-free compliance, and SOD-123W footprint compatibility with automated placement.

Technical Context

The S15DLW is a single-die, standard recovery rectifier optimized for medium-voltage, medium-current switching power applications. Its 200V V_RRM, 1.5A average forward current rating, and 50A I_FSM support robust operation under transient load conditions in compact DC-DC stages.

Thermal performance is defined by R_θJL = 29°C/W and R_θJA = 85°C/W on a 5mm × 5mm Cu pad PCB - enabling reliable conduction at TJ up to 175°C while maintaining low forward voltage drop (0.98V typ. @ 1.5A/25°C).

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback/freewheeling paths
I_F	1.5 A - Continuous average forward current; sets steady-state power delivery capacity in SMPS output stages
I_FSM	50 A - Peak non-repetitive surge current (8.3 ms half-sine); withstands startup/inrush transients without failure
V_F max	1.10 V @ 1.5A/25°C - Directly impacts conduction loss and thermal rise in high-duty-cycle rectification
T_J max	175 °C - Enables operation in thermally constrained environments such as enclosed industrial power modules
R_θJA	85 °C/W - Measured on 5 mm × 5 mm Cu pad; informs heatsinking requirements for derated current handling
C_J	10 pF @ 4 V - Low junction capacitance minimizes switching losses and EMI in high-frequency 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, MSL Level 1, weight ≈ 0.019 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., switch node in buck converter); requires low-inductance trace routing
Cathode	Forward current exit / reverse blocking terminal	Connected to output rail or ground return; cathode band marks physical orientation for automated placement verification

Key Features

Feature	Design Value
MSL Level 1	Zero bake requirement before reflow - simplifies SMT line integration and eliminates moisture-related popcorning risk
RoHS & Halogen-Free	Complies with IEC 61249-2-21 and EU RoHS - meets environmental compliance mandates for industrial and consumer end equipment
High I_FSM/I_F ratio (33×)	Enables reliable operation during short-duration overloads without derating or oversized selection
Low V_F at elevated T_J	0.87 V typ. @ 1.5A/125°C - maintains efficiency and thermal stability across full industrial temperature range
SOD-123W footprint	Standardized 2.7 mm × 1.6 mm outline with 1.3 mm height - ensures compatibility with existing pick-and-place tooling and stencil designs

Applications

DC–DC Converter Output Rectification	Switching Inverter Freewheeling Path
Use Scenario: Secondary-side rectification in isolated 12 V/1.5 A buck-derived DC–DC module powering FPGA I/O rails. IC Role / Device Role / Timing Role: Unidirectional current steering device converting transformer secondary AC to regulated DC; operates in forward conduction only. Use Value: 1.05 V max V_F limits conduction loss to <1.6 W at full load, reducing heatsink need in space-constrained telecom modules.	Use Scenario: Freewheeling path across IGBT in 48 V battery-fed motor inverter stage for HVAC blower control. IC Role / Device Role / Timing Role: Clamp diode providing low-impedance return path during IGBT turn-off; handles 50 A surge during fault events. Use Value: 50 A I_FSM rating prevents avalanche failure during rapid current decay, improving system fault tolerance.
Industrial Power Supply Input Stage	LED Driver Bulk Rectification
Use Scenario: Bridge rectifier input stage in 24 V/2 A industrial PLC power supply operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: Standard recovery rectifier conducting mains-frequency half-cycles; not used for high-frequency switching. Use Value: 175°C T_J max allows full 1.5 A rating at 60°C ambient without derating, eliminating need for parallel devices.	Use Scenario: Bulk AC rectification feeding constant-current LED driver IC in outdoor streetlight housing. IC Role / Device Role / Timing Role: Primary rectifier converting 100–277 VAC line to high-voltage DC bus; exposed to repeated thermal cycling. Use Value: MSL Level 1 and JESD201 Class 2 whisker resistance ensure long-term solder joint integrity under thermal stress and humidity exposure.

DC–DC Converter Output Rectification

Switching Inverter Freewheeling Path

Use Scenario: Secondary-side rectification in isolated 12 V/1.5 A buck-derived DC–DC module powering FPGA I/O rails.

IC Role / Device Role / Timing Role: Unidirectional current steering device converting transformer secondary AC to regulated DC; operates in forward conduction only.

Use Value: 1.05 V max V_F limits conduction loss to <1.6 W at full load, reducing heatsink need in space-constrained telecom modules.

Use Scenario: Freewheeling path across IGBT in 48 V battery-fed motor inverter stage for HVAC blower control.

IC Role / Device Role / Timing Role: Clamp diode providing low-impedance return path during IGBT turn-off; handles 50 A surge during fault events.

Use Value: 50 A I_FSM rating prevents avalanche failure during rapid current decay, improving system fault tolerance.

Industrial Power Supply Input Stage

LED Driver Bulk Rectification

Use Scenario: Bridge rectifier input stage in 24 V/2 A industrial PLC power supply operating continuously at 60°C ambient.

IC Role / Device Role / Timing Role: Standard recovery rectifier conducting mains-frequency half-cycles; not used for high-frequency switching.

Use Value: 175°C T_J max allows full 1.5 A rating at 60°C ambient without derating, eliminating need for parallel devices.

Use Scenario: Bulk AC rectification feeding constant-current LED driver IC in outdoor streetlight housing.

IC Role / Device Role / Timing Role: Primary rectifier converting 100–277 VAC line to high-voltage DC bus; exposed to repeated thermal cycling.

Use Value: MSL Level 1 and JESD201 Class 2 whisker resistance ensure long-term solder joint integrity under thermal stress and humidity exposure.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MUR1520	200 V V_RRM, 1.5 A I_F, but TO-220AC package (larger, through-hole) and faster recovery (ultrafast, t_rr = 75 ns)	Requires PCB redesign for through-hole mounting; higher cost per unit in SMT lines	Select when board-level thermal management favors leaded packages or ultrafast recovery is required for EMI reduction
Vishay VS-1N5819HM3/85A	40 V V_RRM, 1 A I_F, Schottky architecture - lower V_F (~0.45 V) but limited voltage range and higher leakage	Not suitable for 200 V blocking; usable only in low-voltage (<30 V) DC–DC outputs	Select only for sub-30 V applications where low V_F outweighs voltage limitation and leakage sensitivity

Compared with MUR1520 and VS-1N5819HM3/85A, the S15DLW provides optimal balance of 200 V blocking, SMT-compatible SOD-123W footprint, and industry-standard recovery speed - making it preferred for cost-sensitive, space-constrained 24–48 V industrial power supplies where ultrafast recovery is unnecessary.

Availability

S15DLW is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and general-purpose power rectification requiring stable component supply, consistent MSL Level 1 handling, and RoHS-compliant sourcing.

Supply support for S15DLW 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, MOSFETs, and bipolar transistors.

The S15DLW belongs to TSC's S15xLW standard rectifier family, engineered for high-volume, cost-effective surface-mount power conversion in industrial, computing, and consumer power supplies.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the S15DLW?

The S15DLW has a V_RRM of 200 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version C2103). This value is fixed for the S15DLW variant and distinguishes it from higher-voltage siblings like S15GLW (400 V) and S15MLW (1000 V). Exceeding 200 V in repetitive reverse bias risks irreversible breakdown. The S15DLW must be selected only for circuits where peak reverse voltage remains ≤200 V.

Does the S15DLW have a specified forward voltage (V_F) at 1.5 A and 125°C?

Yes, the S15DLW specifies V_F = 0.87 V (typical) and ≤1.05 V (maximum) at I_F = 1.5 A and T_J = 125°C, per the Electrical Specifications table. This elevated-temperature V_F data confirms stable conduction performance under thermal stress, critical for industrial applications where ambient temperatures exceed 85°C. The S15DLW maintains lower forward drop than many competing 200 V rectifiers at high junction temperatures.

Is the S15DLW RoHS and halogen-free compliant?

Yes, the S15DLW is explicitly stated as RoHS compliant and halogen-free per IEC 61249-2-21 in the official Taiwan Semiconductor documentation. This dual compliance is verified in the FEATURES section and applies to all units shipped under ordering code S15DLW. No exemptions or alternate material sets are referenced - the S15DLW meets full regulatory requirements for environmentally restricted markets including the EU and China.

What is the moisture sensitivity level (MSL) of the S15DLW, and does it require baking before reflow?

The S15DLW has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH without floor life restrictions and requires no pre-reflow baking. This is confirmed in the FEATURES list and simplifies manufacturing logistics. Unlike MSL 3+ components, the S15DLW can be loaded directly from dry pack into SMT lines - a key advantage for high-throughput assembly of the S15DLW.

What package type does the S15DLW use, and what are its key mechanical attributes?

The S15DLW uses the SOD-123W package: a surface-mount, molded plastic case measuring approximately 2.7 mm × 1.6 mm × 1.3 mm, with matte tin-plated leads solderable per J-STD-002 and polarity marked by a cathode band. It meets UL 94V-0 flammability and JESD201 Class 2 whisker resistance. The S15DLW's SOD-123W footprint is identical to industry-standard SOD-123 but with enhanced thermal pad design for improved heat dissipation.

S15DLW 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):: 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 @ 200 V

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123W

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

S15DLW FAQ

1.How can I place an order for S15DLW through Aetrix?

Please submit a Request for Quotation (RFQ) for S15DLW 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 S15DLW reliable?

The price and inventory of S15DLW are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S15DLW is usually 5 days.

3.What payment methods are accepted for S15DLW?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S15DLW transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S15DLW?

S15DLW orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S15DLW 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 S15DLW?

For technical support, including S15DLW datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S15DLW requirements.

6.How does Aetrix verify that S15DLW is sourced from the original manufacturer or authorized distributors?

All S15DLW 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 S15DLW meets industry standards.

7.What is the process for return or replacement of S15DLW?

All S15DLW units undergo pre-shipment inspection (PSI). If there is an issue with S15DLW, 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 S15DLW part is unused and in its original packaging.

Return procedure for S15DLW:

1.Submit a request within 90 days.

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

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