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Taiwan Semiconductor Corporation SS115LWH
- Part No.:
- SS115LWH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
SS115LWH.pdf
- Description:
- 1A, 150V, SCHOTTKY RECTIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:19,925
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Product details
Overview
SS115LWH from Taiwan Semiconductor is a 150 V, 1 A surface-mount Schottky barrier rectifier in SOD-123W package, featuring 0.95 V forward voltage at 1 A and 10 µA reverse leakage at rated VR, optimized for automotive-grade DC/DC converters and reverse battery protection circuits.
For engineers reviewing the SS115LWH datasheet, SS115LWH pinout, SS115LWH application, or SS115LWH equivalent, key selection criteria include peak reverse voltage (150 V), junction temperature rating (–55 °C to +150 °C), surge current capability (30 A), thermal resistance (RθJA = 80 °C/W), and AEC-Q101 qualification status.
Technical Context
The SS115LWH implements a single-die Schottky structure with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 150 V VRRM and 10 µA IR at rated VR reflect optimized high-voltage Schottky design trade-offs versus lower-voltage variants like SS14LWH.
Thermal performance is defined by RθJL = 25 °C/W and RθJA = 80 °C/W, enabling operation up to +150 °C junction temperature. The device meets JESD201 Class 2 whisker resistance and moisture sensitivity level 1 per J-STD-020.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - maximum repetitive reverse blocking voltage without breakdown |
| IF | 1 A - continuous average forward current at TL = 75 °C |
| IFSM | 30 A - non-repetitive surge current (8.3 ms half-sine) |
| VF | 0.95 V - forward voltage drop at IF = 1 A, TJ = 25 °C |
| IR | 10 µA - reverse leakage current at VR = 150 V, TJ = 25 °C |
| TJ max | +150 °C - maximum operating junction temperature, enabling under-hood automotive use |
| Package | SOD-123W - JEDEC DO-219AB-compliant surface-mount outline with 2.6–2.9 mm body width |
Pinout & Package
SOD-123W package: 2-terminal surface-mount device with cathode band marking; case dimensions 2.90 × 1.40 × 1.02 mm (L × W × H); matte tin-plated leads; polarity indicated by cathode band.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of load or source in rectification path |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connected to higher-potential node; blocks 150 V reverse voltage |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements including HTOL, TC, UHAST |
| Guard ring structure | Enhances edge termination robustness against transient overvoltage and localized field crowding |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly lines |
| High surge current capability (30 A) | Withstands inrush and fault currents in DC/DC input stages and motor drive freewheeling paths |
| Halogen-free & RoHS compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements |
Applications
| Automotive DC/DC Converters | Reverse Battery Protection |
|---|---|
Use Scenario: Primary output rectification in 12 V/48 V bidirectional DC/DC converters for mild hybrid systems. IC Role / Device Role / Timing Role: Schottky rectifier handling continuous 1 A output current with minimal conduction loss. Use Value: 0.95 V VF reduces power loss vs. silicon diodes, improving efficiency in thermally constrained under-hood environments. | Use Scenario: Polarity protection circuit between vehicle battery and ECU power rail. IC Role / Device Role / Timing Role: Anode-to-battery, cathode-to-ECU; blocks reverse current during accidental battery reversal. Use Value: 150 V VRRM accommodates load dump transients up to ±120 V while maintaining low leakage (<10 µA). |
| Car Lighting Systems | Freewheeling Diodes in Motor Drivers |
Use Scenario: Output rectification in LED driver modules for headlamps and DRLs. IC Role / Device Role / Timing Role: High-frequency switching rectifier in buck-derived topologies operating >100 kHz. Use Value: Low VF and fast recovery minimize heat generation in compact sealed lamp housings. | Use Scenario: Freewheeling path across brushed DC motor windings in seat/mirror actuators. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path during PWM off-time. Use Value: 30 A IFSM withstands motor stall surges; 150 °C TJ max supports operation near hot motors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-1EWH01-M3/5AT | 100 V VRRM, 0.72 V VF @ 1 A, SOD-123 package (not SOD-123W) | Lower voltage rating limits use in 48 V systems with load dump margin | Select when 100 V rating suffices and board space allows alternate footprint |
| ON Semiconductor SB1150-TB | 150 V VRRM, 0.92 V VF @ 1 A, SOD-123 package (0.1 mm narrower body) | Slightly lower VF but lacks AEC-Q101 qualification and guard ring | Prefer SS115LWH where automotive qualification and overvoltage robustness are mandatory |
Compared with VS-1EWH01-M3/5AT and SB1150-TB, the SS115LWH uniquely combines 150 V rating, AEC-Q101 qualification, guard ring protection, and SOD-123W mechanical robustness-making it the only option validated for automotive under-hood rectification with full transient immunity.
Availability
SS115LWH is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and car lighting systems requiring stable component supply with guaranteed long-term availability.
Supply support for SS115LWH 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 Company (TSC) is a vertically integrated semiconductor manufacturer specializing in discrete power devices, analog ICs, and optoelectronics, headquartered in Hsinchu, Taiwan.
The SS115LWH belongs to TSC's AEC-Q101-qualified SOD-123W Schottky rectifier family, engineered specifically for high-reliability automotive power conversion and protection applications demanding extended temperature operation and transient robustness.
FAQ
What is the maximum junction temperature rating for the SS115LWH?
The SS115LWH has a maximum junction temperature (TJ) rating of +150 °C, verified per AEC-Q101 stress testing. This enables reliable operation in under-hood automotive environments where ambient temperatures exceed 105 °C. The SS115LWH maintains specified electrical parameters up to this limit, with derating applied above 75 °C lead temperature per its forward current derating curve.
Is the SS115LWH qualified to AEC-Q101 standards?
Yes, the SS115LWH is explicitly AEC-Q101 qualified, as confirmed in Taiwan Semiconductor's official documentation (Version B2305). This qualification covers temperature cycling, high-temperature operating life, unbiased highly accelerated stress test, and other stress tests required for automotive discrete components. The SS115LWH's guard ring structure and SOD-123W package contribute to its qualification compliance.
What is the forward voltage of the SS115LWH at 1 A and 25 °C?
The SS115LWH exhibits a maximum forward voltage (VF) of 0.95 V at IF = 1 A and TJ = 25 °C, per the Electrical Specifications table. This value is measured under pulse conditions (PW = 0.3 ms) and reflects the device's low-conduction-loss Schottky architecture optimized for high-efficiency power conversion in automotive and industrial applications.
Does the SS115LWH have a guard ring structure?
Yes, the SS115LWH incorporates a guard ring for overvoltage protection, as stated in the FEATURES section of its official datasheet. This structural feature improves edge termination reliability and enhances robustness against transient voltage spikes and localized electric field concentration-critical for automotive applications subject to load dump and jump-start events.
What packaging and reel quantity is offered for the SS115LWH?
The SS115LWH is supplied in SOD-123W package on tape-and-reel format, with 10,000 units per reel, as specified in the ORDERING INFORMATION section. The marking code "A5LW" appears on the device body, and the package complies with JEDEC DO-219AB, Variation AB, Issue C mechanical standards.
SS115LWH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123W
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 150 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10 µA @ 150 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
- Operating Temperature - Junction:
- -55°C ~ 150°C
SS115LWH FAQ
1.How can I place an order for SS115LWH through Aetrix?
Please submit a Request for Quotation (RFQ) for SS115LWH 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 SS115LWH reliable?
The price and inventory of SS115LWH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SS115LWH is usually 5 days.
3.What payment methods are accepted for SS115LWH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SS115LWH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SS115LWH?
SS115LWH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SS115LWH 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 SS115LWH?
For technical support, including SS115LWH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SS115LWH requirements.
6.How does Aetrix verify that SS115LWH is sourced from the original manufacturer or authorized distributors?
All SS115LWH 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 SS115LWH meets industry standards.
7.What is the process for return or replacement of SS115LWH?
All SS115LWH units undergo pre-shipment inspection (PSI). If there is an issue with SS115LWH, 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 SS115LWH part is unused and in its original packaging.
Return procedure for SS115LWH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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