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Taiwan Semiconductor Corporation SK315BHR5G
- Part No.:
- SK315BHR5G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SK315BHR5G.pdf
- Description:
- DIODE SCHOTTKY 150V 3A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,126
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Product details
Overview
SK315BHR5G from Taiwan Semiconductor is a 3A, 150V Schottky barrier rectifier in DO-214AA (SMB) package, designed for low-loss freewheeling and reverse battery protection in automotive lighting and DC/DC converters. It features AEC-Q101 qualification, 0.95V max forward voltage at 3A/25°C, 70A surge capability, and junction temperature up to +150°C.
For engineers reviewing the SK315BHR5G datasheet, SK315BHR5G pinout, SK315BHR5G application, or SK315BHR5G equivalent, key selection criteria include its 150V VRRM, low VF at high current, AEC-Q101 compliance, thermal resistance (RθJL = 23°C/W), and SMB package suitability for automated SMT assembly in space-constrained automotive modules.
Technical Context
This discrete Schottky diode uses a single-die construction with guard ring for overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 10,000 V/μs dV/dt rating supports fast-switching topologies, while moisture sensitivity level 1 (per J-STD-020) enables standard reflow without dry-pack handling.
The device operates across –55°C to +150°C junction range and delivers stable reverse leakage ≤2 mA at 125°C and rated VR, enabling reliable performance in under-hood automotive environments where thermal cycling and transient voltage stress are common.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 150 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 12–48V system reverse polarity protection. |
| IF | 3 A - Continuous forward current rating; supports sustained conduction in power rail freewheeling paths. |
| IFSM | 70 A - Non-repetitive surge current (8.3 ms half-sine); handles inrush and fault transients in automotive DC/DC stages. |
| VF @ 3A, 25°C | ≤0.95 V - Low forward drop reduces conduction loss and self-heating in high-duty-cycle applications. |
| RθJL | 23 °C/W - Junction-to-lead thermal resistance; enables direct PCB copper pour heat sinking without external heatsink. |
| TJ max | +150 °C - Maximum junction temperature; allows operation in high-ambient under-hood locations. |
| IR @ 150V, 125°C | ≤2 mA - Reverse leakage at elevated temperature and full rated voltage; ensures minimal standby power loss. |
Pinout & Package
Package: DO-214AA (SMB), surface-mount plastic case with cathode band marking; dimensions 4.60 × 2.60 × 2.00 mm; UL 94V-0 rated molding compound; weight ≈0.100 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to positive side of source (e.g., battery+, switch-node output); requires adequate copper area for thermal dissipation. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by visible band; connects to load ground or return path; determines polarity in reverse-battery protection circuits. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics per stress test requirements (HTOL, TC, HTRB, etc.), enabling use in production vehicle ECUs. |
| Guard ring structure | Enhances edge termination robustness against voltage transients and localized field crowding, improving reliability in noisy 12V systems. |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; compatible with standard SMT lines without special handling or dry storage. |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS directives; supports environmentally regulated automotive supply chains. |
| High dV/dt capability | 10,000 V/μs rating prevents false turn-on during fast voltage transitions in switching regulators and motor drivers. |
Applications
| Automotive LED Lighting | 12V/24V DC/DC Converters |
|---|---|
Use Scenario: Reverse-polarity protection for headlamp and DRL modules powered from vehicle battery. IC Role / Device Role / Timing Role: Discrete Schottky rectifier placed in series with input rail to block reverse current during battery misconnection. Use Value: 0.95V VF minimizes voltage drop and power loss at 3A load, preserving LED brightness and thermal margin. | Use Scenario: Output freewheeling diode in synchronous-buck or flyback converter for infotainment power supplies. IC Role / Device Role / Timing Role: Uncontrolled rectifier providing current path during high-side switch off-time. Use Value: 70A IFSM withstands peak inductor current surges; RθJL = 23°C/W enables direct thermal coupling to PCB ground plane. |
| Reverse Battery Protection | Industrial Power Supplies |
Use Scenario: Input protection for telematics control units exposed to service-level battery swaps. IC Role / Device Role / Timing Role: Series-connected Schottky diode preventing damage when battery terminals are reversed. Use Value: 150V VRRM provides 2× safety margin over 48V nominal truck systems; AEC-Q101 ensures long-term field reliability. | Use Scenario: Freewheeling path in industrial 24V SMPS powering PLC I/O modules. IC Role / Device Role / Timing Role: High-current, low-loss rectifier replacing slower PN diodes to improve efficiency and reduce heatsink size. Use Value: ≤2 mA IR at 125°C ensures stable operation in enclosed enclosures; DO-214AA footprint fits legacy layouts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS315H from Diodes Inc. | Same 150V VRRM, 3A IF, DO-214AA package; VF = 0.87V typ @ 3A (lower than SK315BHR5G's 0.95V max). | Slightly lower conduction loss; identical AEC-Q101 qualification and thermal specs. | Preferred where marginal efficiency gain justifies sourcing from alternate vendor. |
| SB3150 from Vishay | 150V VRRM, 3A IF, DO-214AA; VF = 0.92V max @ 3A; no AEC-Q101 documentation in public datasheet. | Lacks automotive qualification evidence; suitable for industrial but not safety-critical automotive designs. | Select only for non-automotive applications where qualification traceability is not required. |
Compared with SS315H and SB3150, SK315BHR5G offers guaranteed AEC-Q101 compliance and tighter thermal resistance (23°C/W vs. typical 25–28°C/W), making it preferred for thermally constrained automotive modules requiring long-term reliability validation.
Availability
SK315BHR5G is available at Aetrix Electronics and suitable for automotive LED lighting, reverse battery protection, and 12V/24V DC/DC converters requiring stable component supply, AEC-Q101 assurance, and DO-214AA footprint compatibility.
Supply support for SK315BHR5G 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 SK3xBH family was developed specifically for high-reliability automotive power rectification, emphasizing AEC-Q101 compliance, low VF stability over temperature, and robust surge immunity in harsh electrical environments.
FAQ
What is the maximum junction temperature rating for SK315BHR5G?
The SK315BHR5G has a maximum junction temperature (TJ) of +150°C, validated per AEC-Q101 stress testing. This rating allows continuous operation in under-hood automotive environments where ambient temperatures exceed 85°C, provided thermal design maintains junction temperature below this limit using PCB copper thermal relief and proper layout.
Is SK315BHR5G pin-compatible with other SK3xBH variants?
Yes, all SK3xBH devices-including SK315BHR5G-share identical DO-214AA (SMB) package dimensions, anode/cathode terminal configuration, and polarity marking. Voltage ratings differ (20V–200V), but mechanical and soldering compatibility is maintained across the family for flexible BOM management.
Does SK315BHR5G require special handling due to moisture sensitivity?
No. SK315BHR5G is rated at Moisture Sensitivity Level 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions and processed through standard reflow profiles without baking or dry-pack requirements-reducing manufacturing overhead in high-volume SMT lines.
What is the reverse leakage current of SK315BHR5G at 125°C?
At 125°C junction temperature and rated 150V reverse voltage, SK315BHR5G exhibits ≤2 mA reverse leakage current (IR). This value is confirmed in the Electrical Specifications table on page 3 of the official TSC datasheet (Version B2212) and reflects worst-case behavior under thermal stress.
Can SK315BHR5G replace a standard PN rectifier in a 24V automotive circuit?
Yes-SK315BHR5G is engineered as a direct upgrade from PN rectifiers in 24V systems. Its 0.95V forward voltage (vs. ~1.1V for PN diodes) reduces conduction loss by >15%, lowers thermal load, and eliminates minority-carrier recovery delay, improving efficiency and EMI in switching power stages.
SK315BHR5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AA, SMB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 150 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 150 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
SK315BHR5G FAQ
1.How can I place an order for SK315BHR5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK315BHR5G 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 SK315BHR5G reliable?
The price and inventory of SK315BHR5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK315BHR5G is usually 5 days.
3.What payment methods are accepted for SK315BHR5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK315BHR5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK315BHR5G?
SK315BHR5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK315BHR5G 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 SK315BHR5G?
For technical support, including SK315BHR5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK315BHR5G requirements.
6.How does Aetrix verify that SK315BHR5G is sourced from the original manufacturer or authorized distributors?
All SK315BHR5G 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 SK315BHR5G meets industry standards.
7.What is the process for return or replacement of SK315BHR5G?
All SK315BHR5G units undergo pre-shipment inspection (PSI). If there is an issue with SK315BHR5G, 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 SK315BHR5G part is unused and in its original packaging.
Return procedure for SK315BHR5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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