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Taiwan Semiconductor Corporation SK36AH
- Part No.:
- SK36AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SK36AH.pdf
- Description:
- DIODE SCHOTTKY 60V 3A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:8,830
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Product details
Overview
SK36AH from Taiwan Semiconductor is a 3A, 60V Schottky barrier rectifier in DO-214AC (SMA) package, designed for low-loss freewheeling and reverse battery protection in automotive DC/DC converters. It features 0.72V forward voltage at 3A/25°C, 200μA reverse leakage at 60V/25°C, and 70A surge capability.
For engineers reviewing the SK36AH datasheet, SK36AH pinout, SK36AH application, or SK36AH equivalent, key selection criteria include its AEC-Q101 qualification, 150°C junction rating, 25°C/W junction-to-lead thermal resistance, and suitability for high-frequency 12V/24V automotive power rails requiring low VF and fast recovery.
Technical Context
The SK36AH implements a single-die Schottky structure with guard ring over-voltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 60V VRRM and 42V VR(RMS) support 12V–24V system-level reverse polarity and load dump transient handling.
Thermally, it delivers 25°C/W RθJL and 66°C/W RθJA, enabling 3A continuous operation without forced airflow in standard PCB layouts. The device operates across –55°C to +150°C junction range and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 60 V - Maximum repetitive reverse voltage; defines safe blocking capability in 24V automotive systems with load dump transients |
| IF | 3 A - Continuous forward current; supports typical DC/DC output stage conduction without derating at ≤70°C ambient |
| VF @ 3A, 25°C | 0.72 V - Low conduction loss; reduces power dissipation to 2.16W at full load, easing thermal design |
| IR @ 60V, 25°C | 200 μA - Minimal leakage; preserves battery standby life in reverse-battery protection circuits |
| IFSM | 70 A - Peak surge rating; withstands inrush and short-circuit events in automotive lighting and infotainment supplies |
| TJ max | 150 °C - Extended junction temperature range; enables operation in under-hood environments |
| RθJL | 25 °C/W - Efficient heat transfer to PCB copper; allows direct thermal pad connection for enhanced reliability |
Pinout & Package
Package: DO-214AC (SMA), surface-mount plastic case with cathode band polarity marking, 0.070g mass, UL 94V-0 molding compound, and JESD201 Class 2 whisker-resistant matte tin leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current input | Connected to positive supply rail or switch node; requires adequate copper area for thermal dissipation |
| Cathode | Forward current output / reverse voltage reference | Marked by band; ties to ground or return path; critical for correct polarity in reverse-battery protection |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test requirements |
| Guard ring structure | Enhances edge termination robustness against localized over-voltage breakdown during transients |
| Low VF and IR combination | Enables >92% efficiency in 12V buck converters at 3A while minimizing standby drain in always-on modules |
| Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates baking requirement in SMT assembly |
| Halogen-free & RoHS compliant | Meets automotive environmental compliance mandates including ELV and IMDS reporting requirements |
Applications
| Automotive DC/DC Converters | Reverse Battery Protection |
|---|---|
Use Scenario: Step-down conversion in 12V/48V hybrid vehicle control units with tight thermal constraints. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or asynchronous buck topology; conducts during low-side switch off-time. Use Value: 0.72V VF minimizes conduction loss; 150°C TJ rating ensures stability during engine-off hot soak conditions. | Use Scenario: Preventing damage when jumper cables are incorrectly connected to vehicle battery terminals. IC Role / Device Role / Timing Role: Series-blocking diode placed between battery input and downstream electronics. Use Value: 200μA IR at 25°C limits quiescent current; AEC-Q101 qualification guarantees survival across 1000+ cold crank cycles. |
| Car Lighting Systems | Low-Voltage Inverters |
Use Scenario: LED headlamp driver with PWM dimming and EMI-sensitive analog sensors nearby. IC Role / Device Role / Timing Role: Output rectifier in boost converter powering constant-current LED strings. Use Value: Fast Schottky recovery avoids voltage spikes that couple into camera or radar subsystems. | Use Scenario: 12V-to-24V boost inverter for cabin display backlighting with high switching frequency (>200kHz). IC Role / Device Role / Timing Role: Output rectifier handling high di/dt transitions in high-frequency resonant topologies. Use Value: 70A IFSM sustains repeated start-up surges; DO-214AC footprint enables compact layout with minimal parasitic inductance. |
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-3EY60-M3/57T | Same 60V VRRM, 3A IF, but VF = 0.75V @ 3A; RθJA = 70°C/W vs. SK36AH's 66°C/W | Slightly higher conduction loss; less efficient in thermally constrained spaces | Preferred where Vishay supply chain alignment or alternate tape/reel packaging is required |
| ON Semiconductor SB360-E3/57T | 60V VRRM, 3A IF, VF = 0.72V @ 3A, but IR = 500μA @ 60V/25°C vs. SK36AH's 200μA | Higher leakage may impact long-term battery drain in always-on modules | Acceptable for non-automotive industrial use where AEC-Q101 is not mandated |
Compared with VS-3EY60-M3/57T and SB360-E3/57T, the SK36AH offers superior leakage performance and tighter thermal resistance-critical for automotive modules operating at elevated ambient temperatures and requiring extended battery-off endurance.
Availability
SK36AH 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 AEC-Q101 assurance and long-lifecycle support.
Supply support for SK36AH 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 Taiwanese semiconductor manufacturer specializing in discrete power devices, including rectifiers, TVS diodes, and MOSFETs for automotive and industrial markets.
The SK36AH belongs to TSC's AEC-Q101-qualified SKxAH Schottky rectifier family, engineered specifically for high-reliability 12V/24V automotive power conversion where low VF, low IR, and thermal resilience are mandatory.
FAQ
What is the maximum junction temperature rating for SK36AH?
The SK36AH has a maximum junction temperature (TJ max) of +150°C, validated per AEC-Q101 stress testing. This rating allows reliable operation in under-hood automotive environments where ambient temperatures exceed 105°C. The SK36AH maintains specified electrical parameters up to this limit, provided thermal design respects its 25°C/W junction-to-lead resistance and appropriate PCB copper area is used.
Is SK36AH suitable for reverse battery protection in automotive ECUs?
Yes, SK36AH is explicitly designed for reverse battery protection in automotive electronic control units. Its 60V VRRM exceeds typical 12V/24V system transients, 200μA IR at 25°C minimizes standby current draw, and AEC-Q101 qualification ensures robustness across temperature cycling, humidity, and mechanical shock. The SK36AH's guard ring structure further enhances survivability during reverse-polarity jump-start events.
What is the forward voltage drop of SK36AH at rated current?
The SK36AH exhibits a typical forward voltage (VF) of 0.72V at 3A and 25°C, measured under pulsed conditions (PW = 0.3ms). This value increases with junction temperature-e.g., ~0.62V at 100°C-making it suitable for high-efficiency DC/DC stages where conduction loss must remain below 2.2W at full load. The SK36AH's VF is confirmed in the manufacturer's B2304 datasheet revision.
Does SK36AH meet RoHS and halogen-free requirements?
Yes, SK36AH complies with RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. The device uses lead-free matte tin plating on leads and UL 94V-0 compliant molding compound. These attributes are documented in the official Taiwan Semiconductor SK32AH–SK320AH datasheet (Version B2304) and support automotive OEM material declarations including IMDS and SDS reporting for the SK36AH.
What is the surge current rating of SK36AH and how is it tested?
The SK36AH has a non-repetitive peak forward surge current (IFSM) rating of 70A, tested using an 8.3ms single half-sine wave superimposed on rated DC load. This rating reflects capability to survive load dump and cranking transients in automotive applications. The SK36AH's ability to sustain this surge is validated under AEC-Q101 conditions and correlates with its 150°C TJ max and 25°C/W RθJL thermal performance.
SK36AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 60 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 720 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 60 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
SK36AH FAQ
1.How can I place an order for SK36AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SK36AH 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 SK36AH reliable?
The price and inventory of SK36AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK36AH is usually 5 days.
3.What payment methods are accepted for SK36AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK36AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK36AH?
SK36AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK36AH 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 SK36AH?
For technical support, including SK36AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK36AH requirements.
6.How does Aetrix verify that SK36AH is sourced from the original manufacturer or authorized distributors?
All SK36AH 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 SK36AH meets industry standards.
7.What is the process for return or replacement of SK36AH?
All SK36AH units undergo pre-shipment inspection (PSI). If there is an issue with SK36AH, 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 SK36AH part is unused and in its original packaging.
Return procedure for SK36AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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