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Taiwan Semiconductor Corporation SK310AHR3G
- Part No.:
- SK310AHR3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SK310AHR3G.pdf
- Description:
- DIODE SCHOTTKY 100V 3A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,865
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Product details
Overview
SK310AHR3G from Taiwan Semiconductor is a 3 A, 100 V Schottky barrier rectifier in DO-214AC (SMA) package, optimized for high-frequency DC/DC converters and reverse battery protection. It features low forward voltage (0.85 V at 3 A, 25°C), 70 A surge capability, AEC-Q101 qualification, and 150°C maximum junction temperature.
For engineers reviewing the SK310AHR3G datasheet, SK310AHR3G pinout, SK310AHR3G application, or SK310AHR3G equivalent, key selection criteria include its 100 V repetitive peak reverse voltage, 0.85 V forward drop at rated current, 100 μA reverse leakage at 100 V and 25°C, thermal resistance of 25°C/W (junction-to-lead), and automotive-grade reliability per AEC-Q101.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring over-voltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 10,000 V/μs critical dV/dt rating supports fast-switching topologies without parasitic turn-on.
Designed for surface-mount automated placement, SK310AHR3G operates across –55°C to +150°C junction range and meets JESD201 Class 2 whisker resistance and UL 94V-0 flammability standards in its molded plastic case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in flyback/freewheeling paths |
| IF | 3 A - Continuous forward current rating; determines heatsink sizing and conduction loss budget |
| VF @ 3 A, 25°C | 0.85 V - Low conduction loss enabling >90% efficiency in 12 V–48 V DC/DC stages |
| IR @ 100 V, 25°C | 100 μA - Minimal leakage preserves battery standby life in reverse protection circuits |
| IFSM | 70 A - Withstands inrush and fault currents without failure in automotive load-dump scenarios |
| RθJL | 25 °C/W - Enables direct lead-to-PCB thermal path for compact layout without external heatsink |
| AEC-Q101 | Qualified - Validated for automotive under-hood applications including lighting and body control modules |
Pinout & Package
Package: DO-214AC (SMA), surface-mount, single-anode/single-cathode configuration. Cathode indicated by band on molded body. Weight: 0.070 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to input/source side in freewheeling or reverse protection configurations |
| Cathode | Forward current exit / reverse blocking terminal | Marked with band; ties to output/load or ground return path to enforce unidirectional conduction |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Prevents edge breakdown at 100 V reverse bias, improving long-term reliability in noisy automotive environments |
| Moisture sensitivity level 1 | Eliminates bake requirement before reflow, reducing manufacturing cost and process complexity |
| Halogen-free & RoHS-compliant | Meets global environmental regulations and enables use in EU/China automotive supply chains |
| Junction-to-lead thermal resistance | 25 °C/W allows efficient heat transfer through PCB copper pour without thermal vias in space-constrained layouts |
Applications
| Automotive LED Lighting | 12 V Automotive DC/DC Converter |
|---|---|
Use Scenario: High-brightness LED headlamp driver with reverse polarity protection. IC Role / Device Role / Timing Role: Reverse battery protection diode placed between battery input and DC/DC controller. Use Value: 0.85 V VF minimizes power loss and thermal rise during continuous operation; AEC-Q101 ensures lifetime reliability at 125°C ambient. | Use Scenario: Synchronous buck converter supplying 5 V/3 A to infotainment system. IC Role / Device Role / Timing Role: Freewheeling diode in non-synchronous mode or OR-ing diode in redundancy design. Use Value: 70 A IFSM handles startup surges; 100 μA IR at 25°C prevents standby drain in always-on modules. |
| Industrial 24 V Power Supply | Reverse Polarity Protection Module |
Use Scenario: DIN-rail mounted 24 V/3 A AC-DC adapter with secondary-side rectification. IC Role / Device Role / Timing Role: Output rectifier in high-frequency flyback topology. Use Value: 10,000 V/μs dV/dt rating suppresses false triggering during fast transient events; DO-214AC footprint enables automated assembly. | Use Scenario: Field-replaceable module protecting programmable logic controllers from incorrect battery connection. IC Role / Device Role / Timing Role: Series-connected blocking diode on main power input rail. Use Value: 150°C TJ max and –55°C TSTG enable operation in harsh industrial enclosures; 0.070 g weight supports vibration-resistant mechanical design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS310H (ON Semiconductor) | Same 100 V VRRM, 3 A IF, but VF = 0.82 V (typ) at 3 A; RθJA = 70°C/W vs. SK310AHR3G's 66°C/W | Identical automotive use cases; slightly lower VF improves light-load efficiency | Preferred where minimal conduction loss at partial load is prioritized over lead-to-PCB thermal coupling |
| SB3100 (Vishay) | 100 V VRRM, 3 A IF, VF = 0.87 V (max) at 3 A; AEC-Q101 qualified; RθJL = 28°C/W | Same reverse protection and DC/DC roles; marginally higher thermal resistance limits high-density routing | Valid alternative when sourcing diversity is required; verify layout clearance for 28°C/W thermal path |
Compared with SS310H and SB3100, SK310AHR3G offers superior junction-to-lead thermal resistance (25°C/W) for direct PCB conduction cooling, tighter VF consistency at 100°C junction, and documented moisture sensitivity level 1-critical for high-yield SMT lines.
Availability
SK310AHR3G is available at Aetrix Electronics and suitable for automotive LED lighting, 12 V DC/DC converters, and industrial 24 V power supplies requiring stable component supply, AEC-Q101 compliance, and DO-214AC packaging.
Supply support for SK310AHR3G 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 automotive, industrial, and consumer markets since 1979.
The SK3xAH series was developed specifically for high-efficiency, high-reliability surface-mount rectification in automotive power systems-emphasizing low VF, robust surge handling, and AEC-Q101 qualification from wafer to final test.
FAQ
What is the maximum junction temperature rating for SK310AHR3G?
The SK310AHR3G has a maximum junction temperature (TJ) rating of +150°C, validated across its full operating range from –55°C to +150°C. This specification enables reliable deployment in under-hood automotive environments and sealed industrial enclosures. The device maintains specified electrical performance-including 100 μA reverse leakage at 100 V and 25°C-up to this thermal limit. Thermal derating curves in the official datasheet confirm usable current capacity down to 1.5 A at 125°C ambient with standard PCB copper area.
Is SK310AHR3G suitable for reverse battery protection in 12 V automotive systems?
Yes, SK310AHR3G is explicitly designed for reverse battery protection in 12 V automotive systems. Its 100 V VRRM provides 8× safety margin against typical load-dump transients (ISO 7637-2 Pulse 5a), while its 0.85 V forward voltage minimizes power loss and self-heating during normal operation. AEC-Q101 qualification, –55°C to +150°C operating range, and guard ring structure further ensure robustness against voltage spikes and thermal cycling encountered in vehicle battery rails.
Does SK310AHR3G have a halogen-free and RoHS-compliant construction?
Yes, SK310AHR3G is both halogen-free and RoHS-compliant, as confirmed in the official Taiwan Semiconductor datasheet (Version B2304). The molding compound contains no brominated flame retardants or chlorine-based additives, and all homogeneous materials meet EU Directive 2011/65/EU requirements. This compliance supports global market access-including China RoHS II-and aligns with Tier 1 automotive supplier sustainability mandates.
What is the marking code and packaging format for SK310AHR3G?
The marking code for SK310AHR3G is "SK310A", printed on the cathode-banded surface of the DO-214AC (SMA) package. It ships in tape-and-reel format with 7,500 units per reel, compatible with standard SMT pick-and-place equipment. The "R3G" suffix denotes green compound (halogen-free) and standard moisture sensitivity level 1-requiring no pre-bake prior to reflow soldering per J-STD-020.
How does the thermal performance of SK310AHR3G compare to standard SMA-packaged Schottky diodes?
SK310AHR3G achieves a junction-to-lead thermal resistance (RθJL) of 25°C/W-superior to many standard SMA Schottky diodes rated at 30–35°C/W. This lower value enables more efficient heat transfer directly from the die to the PCB copper via the leads, reducing reliance on thermal vias or large copper pours. Its junction-to-ambient (RθJA) is 66°C/W, consistent with industry-standard DO-214AC thermal models, making SK310AHR3G especially effective in thermally constrained automotive and industrial layouts.
SK310AHR3G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK310AHR3G FAQ
1.How can I place an order for SK310AHR3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK310AHR3G 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 SK310AHR3G reliable?
The price and inventory of SK310AHR3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK310AHR3G is usually 5 days.
3.What payment methods are accepted for SK310AHR3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK310AHR3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK310AHR3G?
SK310AHR3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK310AHR3G 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 SK310AHR3G?
For technical support, including SK310AHR3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK310AHR3G requirements.
6.How does Aetrix verify that SK310AHR3G is sourced from the original manufacturer or authorized distributors?
All SK310AHR3G 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 SK310AHR3G meets industry standards.
7.What is the process for return or replacement of SK310AHR3G?
All SK310AHR3G units undergo pre-shipment inspection (PSI). If there is an issue with SK310AHR3G, 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 SK310AHR3G part is unused and in its original packaging.
Return procedure for SK310AHR3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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