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Taiwan Semiconductor Corporation S15KCH
- Part No.:
- S15KCH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
S15KCH.pdf
- Description:
- DIODE GEN PURP 800V 15A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,960
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Product details
Overview
S15KCH from Taiwan Semiconductor is a surface-mount silicon rectifier diode with 15A average forward current, 800V repetitive peak reverse voltage (VRRM), and DO-214AB (SMC) package - designed for high-reliability automotive power conversion, including DC-DC converters and car lighting systems.
For engineers reviewing the S15KCH datasheet, S15KCH pinout, S15KCH application, or S15KCH equivalent, key selection criteria include verified AEC-Q101 qualification, 350A non-repetitive surge capability, glass-passivated junction, and J-STD-020 Level 1 moisture sensitivity - all confirmed for this exact variant.
Technical Context
The S15KCH is a single-die, unidirectional silicon rectifier optimized for high-current, medium-voltage AC/DC and DC/DC power stages. Its 800V VRRM, 1.1V max forward voltage at 15A, and 250µA max reverse leakage at 125°C support stable operation in thermally constrained automotive environments.
Thermal performance is defined by RθJL = 8°C/W and RθJA = 44°C/W, enabling direct PCB heat dissipation without heatsinks in many 15A applications. The device uses matte tin-plated leads compliant with J-STD-002 and meets JESD201 Class 2 whisker resistance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - blocks up to 800V reverse voltage in continuous operation, matching 800V bus designs |
| IF | 15 A - rated average forward current at TA = 75°C, suitable for sustained 15A power delivery |
| IFSM | 350 A - withstands 8.3ms half-sine surge, supporting inrush and fault transient handling |
| VF (max) | 1.1 V @ 15A, 25°C - low conduction loss improves efficiency in high-current rectification |
| TJ (max) | +150°C - enables operation in under-hood automotive environments with minimal derating |
| CJ | 93 pF @ 1MHz, 4V - low junction capacitance reduces switching noise in snubber and freewheeling roles |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode-indicated by band. Matte tin-plated leads, UL 94V-0 molding compound, 0.270g typical weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to AC input or switch-node side; accepts 15A continuous; requires thermal pad layout per SMC footprint |
| Cathode | Forward current exit / reverse voltage blocking terminal | Connected to output rail or ground return; marked by visible band; handles full 800V reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing |
| Glass passivated junction | Enhances long-term stability and humidity resistance in harsh under-hood conditions |
| Low VF (≤1.1V) | Reduces conduction losses by ~15% vs. comparable 800V rectifiers, improving thermal margin |
| J-STD-020 Level 1 | No floor life limitation or bake requirement before reflow - supports standard SMT assembly |
| Halogen-free (IEC 61249-2-21) | Complies with automotive environmental standards and RoHS without compromising flame retardancy |
Applications
| Automotive DC-DC Converter | LED Headlamp Power Supply |
|---|---|
Use Scenario: High-efficiency 12V-to-48V bidirectional DC-DC stage in mild-hybrid vehicles. IC Role / Device Role / Timing Role: Primary output rectifier handling 15A continuous current with 800V blocking during transients. Use Value: Low 1.1V VF minimizes power loss and thermal stress; AEC-Q101 ensures 15-year field reliability. | Use Scenario: Constant-current driver for adaptive LED headlamps requiring robust overvoltage protection. IC Role / Device Role / Timing Role: Freewheeling diode across buck converter inductor, clamping inductive kickback up to 800V. Use Value: 350A IFSM safely absorbs inductor energy during fault events; glass passivation prevents corrosion in humid lamp housings. |
| Snubber Network | Industrial AC-DC Front-End |
Use Scenario: RC-snubber across IGBTs in motor drives operating at 400–800V bus voltages. IC Role / Device Role / Timing Role: Fast-recovery snubber diode absorbing turn-off spikes and reducing EMI. Use Value: 93pF CJ limits capacitive coupling; 150°C TJmax sustains operation during repeated snubbing pulses. | Use Scenario: Input bridge rectifier in industrial 240VAC-powered PLC power supplies. IC Role / Device Role / Timing Role: Single-phase rectifier in compact SMC-footprint bridge configuration. Use Value: DO-214AB package enables automated placement and high-density layout; Level 1 MSL eliminates pre-bake logistics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-15EWH08-M3 | Same 15A/800V rating, but TO-277 package (3-lead); higher RθJA = 50°C/W | Requires different footprint and thermal relief; not SMC-compatible | Choose when leaded mounting or dual-anode configurations are needed |
| ON Semiconductor MUR1580CT | 15A/800V, but dual common-cathode die in TO-220AC; faster recovery (trr = 75ns) | Designed for dual-output or synchronous rectification; not single-diode drop-in | Prefer for fast-switching topologies where reverse recovery matters more than surge rating |
Compared with VS-15EWH08-M3 and MUR1580CT, the S15KCH offers superior surge robustness (350A vs. 250A/200A), lower thermal resistance to lead (8°C/W), and automotive-qualified reliability - making it optimal for space-constrained, high-transient automotive rectification.
Availability
S15KCH is available at Aetrix Electronics and suitable for automotive DC-DC converters, LED lighting drivers, and industrial snubber networks requiring stable component supply, AEC-Q101 compliance, and DO-214AB surface-mount compatibility.
Supply support for S15KCH 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 devices, and automotive-qualified components.
The S15KCH belongs to TSC's AEC-Q101-qualified S15xCH rectifier family, engineered specifically for high-current, high-voltage automotive power conversion where reliability, thermal efficiency, and SMT manufacturability are critical.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) of the S15KCH?
The S15KCH has a VRRM of 800 V, as explicitly specified in the Absolute Maximum Ratings table for the S15KCH variant. This value is distinct from other members of the family (e.g., S15GCH = 400 V, S15MCH = 1000 V) and is confirmed by the marking code "S15KC" on the device body. The S15KCH must not be used in circuits exceeding 800 V reverse bias under repetitive conditions.
Is the S15KCH qualified for automotive applications?
Yes, the S15KCH is AEC-Q101 qualified, as stated in the FEATURES section of the official Taiwan Semiconductor datasheet. This qualification covers stress tests including high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock - confirming suitability for under-hood automotive use. The S15KCH is not just "automotive-grade" by marketing claim; its AEC-Q101 status is documented and verified for this exact part number.
What package type does the S15KCH use, and is it compatible with standard SMT processes?
The S15KCH uses the DO-214AB (SMC) surface-mount package, with matte tin-plated leads that meet J-STD-002 solderability requirements. It is rated MSL Level 1 per J-STD-020, meaning it can be placed and reflowed without baking or floor-life restrictions. The S15KCH is fully compatible with standard high-volume SMT assembly lines using standard SMC footprint stencils and reflow profiles.
What is the forward voltage (VF) specification for the S15KCH at rated current?
The S15KCH has a maximum forward voltage of 1.1 V at IF = 15 A and TJ = 25°C, per the Electrical Specifications table. This is a guaranteed upper limit under pulsed test conditions (PW = 0.3 ms). At elevated junction temperatures or continuous DC operation, VF will be slightly lower due to negative temperature coefficient - a behavior confirmed in the Typical Forward Characteristics curve for the S15KCH.
Does the S15KCH have halogen-free and RoHS-compliant construction?
Yes, the S15KCH is both RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the FEATURES section. The molding compound is UL 94V-0 rated, and the device carries no brominated or chlorinated flame retardants. This compliance applies specifically to the S15KCH variant and is verified in Taiwan Semiconductor's material declarations and certificate of compliance.
S15KCH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 15 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 800 V
- Capacitance @ Vr, F:
- 93pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
S15KCH FAQ
1.How can I place an order for S15KCH through Aetrix?
Please submit a Request for Quotation (RFQ) for S15KCH 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 S15KCH reliable?
The price and inventory of S15KCH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S15KCH is usually 5 days.
3.What payment methods are accepted for S15KCH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S15KCH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S15KCH?
S15KCH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S15KCH 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 S15KCH?
For technical support, including S15KCH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S15KCH requirements.
6.How does Aetrix verify that S15KCH is sourced from the original manufacturer or authorized distributors?
All S15KCH 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 S15KCH meets industry standards.
7.What is the process for return or replacement of S15KCH?
All S15KCH units undergo pre-shipment inspection (PSI). If there is an issue with S15KCH, 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 S15KCH part is unused and in its original packaging.
Return procedure for S15KCH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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