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Taiwan Semiconductor Corporation SK310BH
- Part No.:
- SK310BH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SK310BH.pdf
- Description:
- DIODE SCHOTTKY 100V 3A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:9,575
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Product details
Overview
SK310BH from Taiwan Semiconductor is a 3A, 100V Schottky barrier rectifier in DO-214AA (SMB) package, qualified to AEC-Q101, with 0.95V max forward voltage at 3A/25°C, 70A surge capability, and 2mA max reverse current at 125°C. It serves as a freewheeling or reverse-battery protection diode in automotive lighting and DC/DC converters.
For engineers reviewing the SK310BH datasheet, SK310BH pinout, SK310BH application, or SK310BH equivalent, key selection criteria include its 100V VRRM, low VF for thermal efficiency, AEC-Q101 qualification for automotive use, and SMB package compatibility with high-density automated assembly.
Technical Context
The SK310BH employs a single-die Schottky junction optimized for low forward conduction loss and fast switching, with no minority-carrier storage delay. Its guard ring structure enhances ruggedness against transient overvoltage events common in automotive load-dump conditions.
Thermal performance is defined by RθJL = 23°C/W and RθJA = 63°C/W, supporting continuous 3A operation up to 125°C junction temperature (or 150°C with derating). Moisture sensitivity level is J-STD-020 Level 1, enabling standard reflow without baking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 12V/24V automotive systems with load dump transients. |
| IF | 3 A - Continuous forward current rating; supports typical LED driver or buck converter output stage loads. |
| VF (max) | 0.95 V @ 3A, 25°C - Low conduction loss reduces power dissipation and improves system efficiency vs. silicon PN diodes. |
| IR (max) | 2 mA @ 100V, 125°C - Low leakage maintains reliability in high-temperature under-hood environments. |
| IFSM | 70 A - Non-repetitive surge current handling for short-duration inrush or fault events. |
| TJ (max) | 150 °C - Extended junction temperature rating enables operation in thermally constrained automotive modules. |
| dV/dt | 10,000 V/μs - High critical rate of rise tolerance prevents false turn-on during fast-switching noise transients. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount plastic case with matte tin-plated leads, polarity indicated by cathode band. Weight: ~0.100 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node in buck converter or battery negative in reverse protection). |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to higher-potential rail (e.g., input supply or LED anode); blocks reverse current above 100V. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test requirements. |
| Guard ring overvoltage protection | Integrated edge termination structure suppresses premature avalanche breakdown during load-dump transients (ISO 7637-2 Pulse 5a). |
| Moisture sensitivity level 1 | Zero bake requirement before reflow soldering; compatible with standard SMT lines without process modification. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally restricted materials. |
Applications
| Automotive LED Lighting | 12V/24V DC/DC Converters |
|---|---|
Use Scenario: High-brightness LED headlamp or DRL module powered from vehicle battery with frequent on/off cycling and load-dump exposure. IC Role / Device Role / Timing Role: Freewheeling diode across inductive buck converter output stage and reverse-battery protection element. Use Value: 0.95V VF minimizes heat generation in sealed lamp housings; AEC-Q101 ensures >15-year field life under thermal cycling. | Use Scenario: Step-down converter supplying 5V/3.3V rails to infotainment or ADAS ECUs in passenger vehicles. IC Role / Device Role / Timing Role: Output rectifier in synchronous or non-synchronous buck topology. Use Value: 70A IFSM withstands startup surges; 100V VRRM provides margin against 12V system transients up to ±100V. |
| Reverse Battery Protection | Industrial Power Supplies |
Use Scenario: Input protection circuit in aftermarket automotive accessories (e.g., dashcams, GPS units) subject to accidental reverse polarity connection. IC Role / Device Role / Timing Role: Series-blocking diode placed between battery terminal and main PCB input. Use Value: Low 0.95V forward drop preserves >95% input voltage under full 3A load; SMB footprint saves board space vs. larger packages. | Use Scenario: Auxiliary 12V-to-5V converter in programmable logic controller (PLC) backplane power distribution. IC Role / Device Role / Timing Role: Secondary-side rectifier in isolated flyback or forward converter. Use Value: RθJL = 23°C/W enables direct thermal coupling to copper pour, sustaining 3A without heatsink in convection-cooled enclosures. |
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-3EYH01-M3/54 | Same DO-214AA package, 100V VRRM, 0.82V VF @ 3A, but rated only to 125°C TJ max and not AEC-Q101 qualified. | Lacks automotive qualification; suitable for industrial/commercial DC/DC where extended temperature or stress testing is not required. | Select when lower forward drop is prioritized over automotive reliability validation and 150°C operation. |
| ON Semiconductor SB3100 | DO-214AA, 100V, 3A, 0.85V VF @ 3A, AEC-Q101 qualified, but IR = 5mA @ 125°C (2.5× higher than SK310BH). | Higher leakage may impact efficiency in high-temperature standby modes (e.g., always-on telematics modules). | Select when cost sensitivity outweighs ultra-low leakage needs; verify thermal design margin with 5mA IR. |
Compared with VS-3EYH01-M3/54 and SB3100, the SK310BH offers the best combination of AEC-Q101 compliance, 150°C capability, and lowest high-temp leakage-critical for automotive lighting and always-on systems where thermal management is constrained.
Availability
SK310BH is available at Aetrix Electronics and suitable for automotive LED lighting, 12V/24V DC/DC converters, and reverse battery protection requiring stable component supply across production lifecycles.
Supply support for SK310BH 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, including rectifiers, TVS diodes, and MOSFETs, with global distribution and AEC-Q101-compliant product lines.
The SK3xBH series was designed specifically for automotive and industrial power conversion applications demanding high surge robustness, low forward loss, and extended temperature operation in compact SMB packaging.
FAQ
What is the maximum junction temperature rating for the SK310BH?
The SK310BH has a maximum junction temperature (TJ) rating of 150°C, with operation specified from –55°C to +150°C. This allows reliable use in under-hood automotive environments where ambient temperatures exceed 105°C, provided thermal design meets RθJL = 23°C/W limits. The SK310BH datasheet confirms this rating in the Absolute Maximum Ratings table.
Is the SK310BH suitable for reverse battery protection in 24V commercial vehicles?
Yes, the SK310BH is suitable for reverse battery protection in 24V systems. Its 100V VRRM provides sufficient margin against ISO 7637-2 Pulse 1 (–150V) and Pulse 4 (load dump up to +120V), while its 0.95V VF at 3A minimizes voltage drop and power loss. The SK310BH's AEC-Q101 qualification further validates its robustness in vehicle-level stress conditions.
Does the SK310BH have a halogen-free and RoHS-compliant construction?
Yes, the SK310BH uses halogen-free molding compound per IEC 61249-2-21 and is fully RoHS compliant per EU Directive 2011/65/EU. These environmental attributes are explicitly stated in the FEATURES section of the official Taiwan Semiconductor SK32BH–SK320BH datasheet (Version B2212), confirming suitability for green manufacturing and export-regulated markets.
What is the reverse leakage current of the SK310BH at 100V and 125°C?
The SK310BH exhibits a maximum reverse leakage current (IR) of 2 mA at 100V reverse voltage and 125°C junction temperature. This value is specified in the ELECTRICAL SPECIFICATIONS table under "Reverse current @ rated VR" for SK310BH, SK315BH, and SK320BH variants, distinguishing it from lower-voltage SK3xBH parts with higher leakage at elevated temperatures.
Can the SK310BH be used in automated SMT assembly without moisture preconditioning?
Yes, the SK310BH has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/60% RH and processed through standard reflow profiles without baking or dry-pack requirements. This eliminates handling steps and reduces risk of popcorning during assembly-confirmed in the MECHANICAL DATA section of the SK32BH–SK320BH datasheet.
SK310BH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 850 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK310BH FAQ
1.How can I place an order for SK310BH through Aetrix?
Please submit a Request for Quotation (RFQ) for SK310BH 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 SK310BH reliable?
The price and inventory of SK310BH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK310BH is usually 5 days.
3.What payment methods are accepted for SK310BH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK310BH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK310BH?
SK310BH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK310BH 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 SK310BH?
For technical support, including SK310BH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK310BH requirements.
6.How does Aetrix verify that SK310BH is sourced from the original manufacturer or authorized distributors?
All SK310BH 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 SK310BH meets industry standards.
7.What is the process for return or replacement of SK310BH?
All SK310BH units undergo pre-shipment inspection (PSI). If there is an issue with SK310BH, 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 SK310BH part is unused and in its original packaging.
Return procedure for SK310BH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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