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Taiwan Semiconductor Corporation S15MLWH
- Part No.:
- S15MLWH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
S15MLWH.pdf
- Description:
- 1.5A, 1000V, STANDARD RECOVERY R
- Quantity:
- Payment:
- Shipping:
Inventory:19,510
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Product details
Overview
S15MLWH from Taiwan Semiconductor is a 1000 V repetitive peak reverse voltage, 1.5 A average forward current standard surface-mount silicon rectifier diode in SOD-123W package, qualified to AEC-Q101 and used in automotive DC-DC converters and snubber circuits.
For engineers reviewing the S15MLWH datasheet, S15MLWH pinout, S15MLWH application, or S15MLWH equivalent, key selection criteria include its 1000 V VRRM, 50 A IFSM, 175 °C maximum junction temperature, low forward voltage (1.10 V max at 1.5 A/25 °C), and AEC-Q101 qualification for automotive reliability.
Technical Context
The S15MLWH is a single-die, unidirectional standard recovery rectifier with cathode-band polarity indication. Its thermal design targets PCB-mounted operation with RθJL = 29 °C/W and RθJA = 85 °C/W on a 5 mm × 5 mm Cu pad.
Electrical behavior is defined by low leakage (≤100 µA at 125 °C, rated VR) and stable forward voltage across temperature (0.87–1.05 V at 1.5 A), supporting high-efficiency power conversion in constrained automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - supports input stages handling 700 V RMS or transient spikes up to 1000 V in automotive and industrial DC-DC systems |
| IF | 1.5 A continuous - rated for steady-state conduction in compact power supplies and lighting drivers |
| IFSM | 50 A (8.3 ms half-sine) - withstands inrush and surge events without failure in snubber or clamp applications |
| TJ max | 175 °C - enables operation in under-hood automotive environments with minimal derating |
| VF max | 1.10 V @ 1.5 A, 25 °C - limits conduction loss to ≤1.65 W per device at full rated current |
| IR max | 100 µA @ 1000 V, 125 °C - ensures low standby leakage in high-voltage hold-off circuits |
| RθJA | 85 °C/W - defines thermal rise above ambient when mounted on standard 5 mm × 5 mm copper pad |
Pinout & Package
Package: SOD-123W - surface-mount plastic case with matte tin-plated leads, UL 94V-0 molding compound, and cathode band polarity marking. Weight: 0.019 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit; requires layout clearance per creepage requirements for 1000 V rating |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by visible band; ties to higher-potential node; handles full VRRM during off-state |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test conditions |
| Moisture sensitivity level 1 | Enables direct placement without baking; compatible with standard SMT reflow profiles |
| High IFSM/IF ratio (33×) | Supports robust surge handling while maintaining small footprint-critical for space-constrained automotive modules |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally regulated supply chains |
| Junction-to-lead thermal resistance | RθJL = 29 °C/W - enables efficient heat transfer to PCB copper, reducing localized hot spots |
Applications
| Automotive DC-DC Converters | LED Headlamp Drivers |
|---|---|
Use Scenario: High-efficiency 12 V to 48 V bidirectional DC-DC conversion in 48 V mild-hybrid architectures. IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback topology. Use Value: 1000 V VRRM provides margin against load-dump transients; 175 °C TJ max sustains operation near engine bay heat sources. | Use Scenario: Constant-current LED driver for adaptive front-lighting systems (AFS) with PWM dimming. IC Role / Device Role / Timing Role: Freewheeling diode in buck converter output stage. Use Value: Low VF (≤1.10 V) minimizes conduction loss at 1.5 A, improving thermal efficiency in sealed headlamp housings. |
| Snubber Networks | Industrial AC-DC Power Supplies |
Use Scenario: RCD snubber across MOSFETs in high-frequency SMPS operating up to 500 kHz. IC Role / Device Role / Timing Role: Clamp diode absorbing turn-off energy from transformer leakage inductance. Use Value: 50 A IFSM safely absorbs short-duration energy spikes; fast recovery avoids reverse recovery oscillation. | Use Scenario: Input bridge rectification or output freewheeling in DIN-rail mounted 24 V/48 V industrial PSUs. IC Role / Device Role / Timing Role: General-purpose rectifier in offline or isolated secondary-side circuits. Use Value: SOD-123W footprint enables high-density layout; AEC-Q101 qualification adds long-term field reliability beyond commercial-grade alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1L06S | 600 V VRRM, same IF/IFSM, TO-277 package (larger footprint) | Limited to ≤600 V systems; requires PCB area increase vs. SOD-123W | Select when higher surge margin needed but voltage rating <600 V and thermal mass allows TO-277 mounting |
| ES1J-M3/84A | 600 V VRRM, 1 A IF, SMA package, no AEC-Q101 | Not qualified for automotive use; lower current and voltage capability | Acceptable for cost-sensitive commercial DC-DC where AEC-Q101 and 1000 V are not required |
Compared with STTH1L06S and ES1J-M3/84A, the S15MLWH uniquely combines 1000 V rating, AEC-Q101 qualification, and SOD-123W footprint-enabling compact, reliable rectification in next-generation automotive power systems where voltage margin and space constraints coexist.
Availability
S15MLWH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED headlamp drivers, and industrial snubber networks requiring stable component supply and long-term lifecycle support.
Supply support for S15MLWH 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 S15MLWH belongs to TSC's AEC-Q101-qualified SOD-123W rectifier family, engineered specifically for high-reliability automotive power conversion where voltage margin, thermal resilience, and automated assembly compatibility are critical.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for the S15MLWH?
The S15MLWH has a VRRM of 1000 V, confirmed in the Absolute Maximum Ratings table across all versions (A2103). This rating applies under standard test conditions (TA = 25 °C) and defines the highest reverse voltage the device can block repeatedly without breakdown. It is the highest voltage grade in the S15xLWH series, distinguishing S15MLWH from lower-voltage variants like S15DLWH (200 V) or S15JLWH (600 V).
Is the S15MLWH suitable for automotive applications?
Yes, the S15MLWH is AEC-Q101 qualified per the manufacturer's documentation, making it suitable for automotive applications including under-hood DC-DC converters and LED lighting. Its 175 °C maximum junction temperature, moisture sensitivity level 1, and halogen-free construction align with automotive reliability and manufacturing requirements. The S15MLWH datasheet explicitly lists "Automotive application" and "Car lighting" under Applications.
What is the forward voltage (VF) of the S15MLWH at 1.5 A and 25 °C?
The S15MLWH has a maximum forward voltage of 1.10 V at 1.5 A and 25 °C, as specified in the Electrical Specifications table. The typical value is 0.98 V under the same conditions. This VF is measured using a pulse test (PW = 0.3 ms) and directly impacts conduction loss-calculating to ≤1.65 W at full rated current.
Which package does the S15MLWH use, and what are its mechanical features?
The S15MLWH uses the SOD-123W package: a compact surface-mount outline with matte tin-plated leads, UL 94V-0 flammability-rated molding compound, and cathode polarity indicated by a band. Mechanical data confirms weight ≈0.019 g, JESD 201 Class 2 whisker resistance, and compatibility with standard reflow soldering per J-STD-002.
Does the S15MLWH have a specified junction-to-ambient thermal resistance (RθJA)?
Yes, the S15MLWH has an RθJA of 85 °C/W, measured with the device mounted on a 5 mm × 5 mm copper pad PCB per JEDEC standards. This value is critical for thermal design in confined spaces such as automotive control units, where ambient temperature may exceed 85 °C and power dissipation must remain within safe junction limits.
S15MLWH 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):
- 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 @ 1000 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
S15MLWH FAQ
1.How can I place an order for S15MLWH through Aetrix?
Please submit a Request for Quotation (RFQ) for S15MLWH 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 S15MLWH reliable?
The price and inventory of S15MLWH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S15MLWH is usually 5 days.
3.What payment methods are accepted for S15MLWH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S15MLWH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S15MLWH?
S15MLWH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S15MLWH 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 S15MLWH?
For technical support, including S15MLWH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S15MLWH requirements.
6.How does Aetrix verify that S15MLWH is sourced from the original manufacturer or authorized distributors?
All S15MLWH 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 S15MLWH meets industry standards.
7.What is the process for return or replacement of S15MLWH?
All S15MLWH units undergo pre-shipment inspection (PSI). If there is an issue with S15MLWH, 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 S15MLWH part is unused and in its original packaging.
Return procedure for S15MLWH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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