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Diodes Incorporated SK36-7-F
- Part No.:
- SK36-7-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK36-7-F.pdf
- Description:
- DIODE SCHOTTKY 60V 3A SMC
- Quantity:
- Payment:
- Shipping:
Inventory:6,375
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Product details
Overview
SK36-7-F 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 0.75 V maximum forward voltage at 3.0 A. It features guard ring construction for transient protection and is used in DC-DC converter output rectification, AC-DC secondary-side rectification, and low-voltage power supplies.
For engineers reviewing the SK36-7-F datasheet, SK36-7-F pinout, SK36-7-F application, or SK36-7-F equivalent, key selection criteria include its 60 V VRRM rating, low 0.75 V VF at 3 A, 100 A IFSM surge capability, thermal resistance (RθJL = 10 °C/W), and SMC package compatibility with automated assembly.
Technical Context
This Schottky rectifier employs platinum-silicide (PtSi) or similar low-barrier metal-semiconductor junction technology to achieve fast switching (no minority carrier storage) and low forward conduction loss. Its guard ring structure enhances ruggedness against voltage transients and improves reliability under repetitive surge conditions.
The device operates across –65 °C to +150 °C junction temperature range and is characterized with 300 µs pulse width, 2% duty cycle testing per Note 1. Thermal performance assumes mounting on 8.0 mm² (0.13 mm thick) copper land pads per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 60 V - Maximum repetitive reverse blocking voltage before breakdown; defines usable input/output voltage margin in buck or flyback secondary circuits. |
| I(AV) | 3.0 A - Average forward current under specified thermal conditions; determines continuous power delivery capability in regulated DC outputs. |
| VF @ 3.0A | 0.75 V - Forward voltage drop at rated current; directly impacts conduction loss (P = I × VF) and thermal design in high-efficiency SMPS. |
| IFSM | 100 A - Non-repetitive surge current handling; enables robustness against inrush or line-transient events without failure. |
| RθJL | 10 °C/W - Junction-to-lead thermal resistance; critical for estimating temperature rise when soldered to PCB copper pads. |
| CT @ 1 MHz | 300 pF - Junction capacitance at 4 V reverse bias; affects high-frequency switching noise and EMI filter design in >100 kHz converters. |
Pinout & Package
Package: SMC (DO-214AB), surface-mount plastic case with cathode band marking. Dimensions: A = 5.59–6.22 mm, B = 6.60–7.11 mm, C = 2.75–3.18 mm, E = 7.75–8.13 mm, J = 2.00–2.40 mm. Moisture sensitivity level: Level 1 per J-STD-020A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node); polarity must match layout to avoid reverse conduction. |
| Cathode | Forward current exit point | Marked by band; connects to output rail or filter capacitor; carries full load current and requires adequate copper area for heat dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring construction | Improves transient voltage immunity and prevents edge breakdown during fast dv/dt events in switching converters. |
| Low VF (0.75 V @ 3 A) | Reduces conduction losses by ~30% vs. comparable 1N5822 (VF ≈ 0.9 V), improving efficiency in 3.3 V/5 V output stages. |
| 100 A IFSM rating | Supports reliable operation during cold-start inrush or short-circuit recovery without bond-wire fusing. |
| UL 94V-0 flammability | Meets safety requirements for enclosed industrial and consumer power supplies without additional potting or barriers. |
Applications
| DC-DC Converter Output Rectification | AC-DC Adapter Secondary Side |
|---|---|
Use Scenario: Used as synchronous or asynchronous rectifier in 3.3 V/5 V/12 V isolated buck-derived topologies operating at 100–500 kHz. IC Role / Device Role / Timing Role: Passive unidirectional current valve; conducts only during positive half-cycle of transformer secondary voltage. Use Value: Low VF minimizes power loss in high-current, low-voltage outputs where even 0.1 V reduction saves >300 mW at 3 A. | Use Scenario: Secondary-side rectifier in 12 V/24 V wall adapters powering networking equipment or IoT gateways. IC Role / Device Role / Timing Role: Converts transformer AC output to pulsating DC prior to LC filtering and regulation. Use Value: 60 V VRRM provides 2× safety margin over 24 V nominal output, accommodating reflected spikes up to 48 V. |
| USB-C Power Delivery Sink | Industrial Sensor Power Supply |
Use Scenario: Input rectification stage in USB-C PD sink designs accepting 5–20 V input, requiring compact, efficient 3 A handling. IC Role / Device Role / Timing Role: Front-end AC/DC or DC/DC input rectifier; blocks reverse current from battery or backup rails. Use Value: SMC package enables automated placement and reflow compatibility with high-density USB-C controller layouts. | Use Scenario: Field-powered 4–20 mA loop-powered sensor with integrated DC-DC conversion from 24 V supply. IC Role / Device Role / Timing Role: Isolated auxiliary supply rectifier delivering stable 3.3 V to microcontroller and analog front-end. Use Value: –65 °C to +150 °C operating range ensures functionality in outdoor enclosures exposed to extreme ambient temperatures. |
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, 3 A I(AV), but VF = 0.52 V @ 3 A; SOD-123FL package (smaller, higher RθJA). | Lower VF improves efficiency but reduced thermal mass limits sustained 3 A operation without heatsinking. | Select for space-constrained, low-duty-cycle applications where peak efficiency outweighs thermal derating needs. |
| SS36HE3/57T | 60 V VRRM, 3 A I(AV), VF = 0.7 V @ 3 A; SMA package, RθJL = 15 °C/W. | SMA footprint differs; slightly higher VF and thermal resistance require larger copper area for same current handling. | Choose when legacy SMA board space exists and cost sensitivity favors Vishay's volume pricing. |
Compared with SK36-7-F, B360A-13-F offers lower conduction loss but less thermal robustness, while SS36HE3/57T trades modest VF improvement for inferior thermal performance and non-drop-in packaging-making SK36-7-F optimal for thermally demanding, production-ready SMC layouts.
Availability
SK36-7-F is available at Aetrix Electronics and suitable for DC-DC converter output rectification, AC-DC adapter secondary-side rectification, and industrial sensor power supply designs requiring stable component supply and long-term manufacturability.
Supply support for SK36-7-F 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, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The SKxx series targets cost-sensitive, high-volume power rectification applications where Schottky performance, JEDEC-compliant packaging, and broad environmental qualification are essential.
FAQ
Is SK36-7-F lead-free and RoHS compliant?
Yes, the "-F" suffix denotes matte tin lead-free plating per J-STD-020A Level 1 moisture sensitivity. The device meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. Certificate of Compliance is available upon request for production lots.
What is the maximum allowable junction temperature during continuous operation?
The absolute maximum junction temperature is +150 °C. For continuous 3.0 A operation, thermal design must ensure TJ ≤ 150 °C using RθJL = 10 °C/W and measured lead temperature; typical derating begins above 110 °C ambient per Fig. 1 in DS13006 Rev. 9.
Can SK36-7-F replace SK36-7 in existing designs?
Yes - SK36-7-F is a direct lead-free replacement for SK36-7, sharing identical electrical specifications, SMC package dimensions, and marking. Only the terminal finish differs (matte tin vs. SnPb), requiring reflow profile adjustment for Pb-free soldering.
Why is SK36-7-F marked "NOT RECOMMENDED FOR NEW DESIGN"?
Diodes Incorporated recommends the newer B3X0 series (e.g., B360A) due to improved VF, tighter parameter distribution, and enhanced surge robustness. SK36-7-F remains fully qualified and supported for legacy production and repair, with no announced obsolescence date.
SK36-7-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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-F FAQ
1.How can I place an order for SK36-7-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SK36-7-F 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-F reliable?
The price and inventory of SK36-7-F 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-F is usually 5 days.
3.What payment methods are accepted for SK36-7-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK36-7-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK36-7-F?
SK36-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK36-7-F 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-F?
For technical support, including SK36-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK36-7-F requirements.
6.How does Aetrix verify that SK36-7-F is sourced from the original manufacturer or authorized distributors?
All SK36-7-F 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-F meets industry standards.
7.What is the process for return or replacement of SK36-7-F?
All SK36-7-F units undergo pre-shipment inspection (PSI). If there is an issue with SK36-7-F, 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-F part is unused and in its original packaging.
Return procedure for SK36-7-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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