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Diodes Incorporated SK36-7
- Part No.:
- SK36-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK36-7.pdf
- Description:
- DIODE SCHOTTKY 60V 3A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:3,056
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Product details
Overview
SK36-7 from Diodes Incorporated is a surface-mount Schottky barrier rectifier rated for 60 V maximum recurrent peak reverse voltage, 3.0 A average forward rectified current, and 0.50 V forward voltage at 3.0 A. It features guard ring construction for transient protection, operates from –65 °C to +150 °C, and is used in DC power supplies, AC/DC adapters, and low-loss output rectification stages.
For engineers reviewing the SK36-7 datasheet, SK36-7 pinout, SK36-7 application, or SK36-7 equivalent, key selection considerations include its 60 V blocking capability, low VF for efficiency-critical 5–12 V output rails, thermal resistance (RθJL = 10 °C/W), and SMC package compatibility with high-current PCB layouts.
Technical Context
This Schottky rectifier uses platinum-silicide or similar low-barrier metal-semiconductor junction technology to achieve fast switching (no minority carrier storage) and minimal reverse recovery charge. Its guard ring structure enhances surge robustness against line transients and ESD events.
Rated for 100 A non-repetitive peak forward surge current (8.3 ms half-sine), it supports inrush-limited AC/DC front-ends and is characterized with 300 pF typical junction capacitance at 1 MHz and 4 V reverse bias - critical for high-frequency noise filtering and EMI control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 60 V - Supports 48 V nominal input systems with 20% margin before breakdown |
| I(AV) | 3.0 A - Sustains continuous output current in compact 12 V/36 W SMPS designs |
| VF @ 3.0 A | 0.50 V - Reduces conduction loss to ≤1.5 W at full load, easing thermal design |
| IR @ 25 °C | 0.5 mA - Ensures low leakage in battery backup and always-on circuits |
| RθJL | 10 °C/W - Enables direct mounting on 8 mm² copper pads for reliable 3 A operation at TJ ≤ 125 °C |
| CT @ 1 MHz | 300 pF - Limits high-frequency ringing in flyback snubbers and synchronous rectifier gate drive paths |
Pinout & Package
Package: SMC (DO-214AB), molded plastic case with cathode band marking; dimensions per datasheet: A = 5.59–6.22 mm, B = 6.60–7.11 mm, C = 2.75–3.18 mm, E = 7.75–8.13 mm; weight ≈ 0.21 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point under forward bias | Connected to transformer secondary or switch node; requires low-inductance trace routing |
| Cathode | Current exit point under forward bias | Connected to output capacitor and load; marked by band; serves as reference for layout ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring construction | Improves surge immunity and prevents edge breakdown during repetitive line transients |
| Low thermal resistance (RθJL = 10 °C/W) | Allows 3 A operation without heatsink when mounted on 8 mm² copper land |
| Lead-free matte tin plating | Complies with RoHS and JEDEC J-STD-020A Level 1 moisture sensitivity requirements |
| High IFSM rating (100 A) | Withstands cold-start surges in offline power supplies without degradation |
Applications
| AC/DC Adapter Output Rectification | USB-C PD Power Delivery Module |
|---|---|
Use Scenario: 12 V/3 A output stage in wall-mounted AC/DC adapter with universal input (85–264 VAC). IC Role / Device Role / Timing Role: Primary unidirectional power conversion element; replaces slower PN diodes to reduce losses and heat buildup. Use Value: 0.50 V VF cuts conduction loss by ~40% vs. comparable 60 V PN rectifier, enabling smaller heatsinks and higher power density. | Use Scenario: Secondary-side synchronous rectifier replacement in 20–45 W USB-C PD chargers operating at 9–20 V output. IC Role / Device Role / Timing Role: Freewheeling diode in quasi-resonant flyback topology; handles discontinuous conduction mode transitions. Use Value: 300 pF capacitance minimizes high-frequency ringing at 100–300 kHz switching edges, reducing EMI filter component count. |
| Industrial 24 V DC Power Supply | Automotive Aftermarket LED Driver |
Use Scenario: Input rectification for DIN-rail mounted 24 V/3 A industrial power supply with wide ambient range (–40 to +85 °C). IC Role / Device Role / Timing Role: Main bridge leg diode in single-phase full-wave configuration; exposed to 100 A surge events during capacitor charging. Use Value: Guard ring and 100 A IFSM ensure reliability across 100,000+ cold starts without parameter drift. | Use Scenario: Output rectifier in 12 V automotive LED headlight driver subjected to load dump (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Reverse-polarity and transient protection element; clamps induced spikes via controlled avalanche behavior. Use Value: 60 V VRRM provides 2× margin over 14 V nominal vehicle system, preventing catastrophic failure during 35 V load dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| B360A-13-F | Same 60 V VRRM, but 3.0 A I(AV) with 0.55 V VF @ 3 A; SMC package; no guard ring | Lacks transient-hardened guard ring; lower surge rating (75 A IFSM) | Prefer where cost is prioritized over surge robustness in benign environments |
| SS36H | 60 V VRRM, 3.0 A I(AV), 0.70 V VF @ 3 A; SMB package; RθJA = 60 °C/W | Higher VF increases conduction loss; smaller SMB footprint limits thermal performance | Choose only if board space is constrained and thermal derating is acceptable |
Compared with SK36-7, B360A-13-F trades surge immunity for slightly lower cost, while SS36H sacrifices efficiency and thermal headroom for footprint reduction - SK36-7 remains optimal for thermally demanding, transient-prone 3 A rectification tasks.
Availability
SK36-7 is available at Aetrix Electronics and suitable for AC/DC adapters, industrial 24 V power supplies, and automotive LED drivers requiring stable component supply and long-term manufacturability.
Supply support for SK36-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.
The SKxx series targets cost-sensitive, high-volume power conversion applications where low VF, robust surge handling, and industry-standard SMC packaging are essential - especially in consumer and industrial off-line power supplies.
FAQ
Is SK36-7 lead-free and RoHS compliant?
Yes. SK36-7 uses matte tin lead-free plating and meets RoHS Directive 2011/65/EU requirements. It is also qualified to JEDEC J-STD-020A Level 1 for moisture sensitivity, allowing standard reflow without baking.
What is the maximum junction temperature for continuous operation?
The absolute maximum junction temperature is +150 °C. For reliable 3.0 A continuous operation, junction temperature must be maintained ≤125 °C using the specified 8.0 mm² copper land pad, which yields RθJL = 10 °C/W.
Can SK36-7 replace SK34 or SK35 in an existing design?
Yes, with electrical verification. SK36-7 has higher VRRM (60 V vs. 40 V or 50 V) and identical package/pinout. No layout change is needed, but ensure reverse voltage stress in the circuit does not exceed 60 V and that thermal margins remain sufficient.
Why is SK36-7 marked "NOT RECOMMENDED FOR NEW DESIGN"?
Diodes Incorporated recommends the newer B3X0 series (e.g., B360A) for new designs due to improved surge robustness, tighter VF distribution, and enhanced process control. SK36-7 remains fully supported for legacy production and repair, with no announced obsolescence.
SK36-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 60 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 750 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 60 V
- Capacitance @ Vr, F:
- 300pF @ 4V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMC
- Operating Temperature - Junction:
- -65°C ~ 150°C
SK36-7 FAQ
1.How can I place an order for SK36-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SK36-7 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 SK36-7 reliable?
The price and inventory of SK36-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK36-7 is usually 5 days.
3.What payment methods are accepted for SK36-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK36-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK36-7?
SK36-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK36-7 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 SK36-7?
For technical support, including SK36-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK36-7 requirements.
6.How does Aetrix verify that SK36-7 is sourced from the original manufacturer or authorized distributors?
All SK36-7 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 SK36-7 meets industry standards.
7.What is the process for return or replacement of SK36-7?
All SK36-7 units undergo pre-shipment inspection (PSI). If there is an issue with SK36-7, 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 SK36-7 part is unused and in its original packaging.
Return procedure for SK36-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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