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Taiwan Semiconductor Corporation SK36B R5G
- Part No.:
- SK36B R5G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SK36B R5G.pdf
- Description:
- DIODE SCHOTTKY 60V 3A DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,123
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Product details
Overview
SK36B R5G from Taiwan Semiconductor is a 3A, 60V Schottky barrier surface-mount rectifier in DO-214AA (SMB) package, featuring 0.85V max forward voltage at 3A/25°C, 100µA max reverse leakage at 25°C, and 70A non-repetitive surge current capability. It serves as a primary output rectifier in low-voltage DC-DC converters and AC-DC adapters.
For engineers reviewing the SK36B R5G datasheet, SK36B R5G pinout, SK36B R5G application, or SK36B R5G equivalent, key selection criteria include its 60V VRRM, thermal resistance (RθJL = 23°C/W), cathode-band polarity marking, moisture sensitivity level 1 rating, and RoHS/halogen-free compliance for high-efficiency power conversion designs.
Technical Context
The SK36B R5G implements a single-die Schottky junction optimized for low forward voltage drop and fast switching with no minority-carrier storage delay. Its 60V peak reverse voltage and 10,000 V/µs dV/dt rating support operation in 48V-input SMPS and buck-derived topologies where rapid voltage transitions occur.
Thermally, it leverages the DO-214AA package's 23°C/W junction-to-lead resistance to sustain 3A continuous forward current at ≤125°C junction temperature, with derating curves confirming usable conduction up to 150°C ambient when mounted on ≥1 cm² copper area.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 60 V - Maximum repetitive reverse blocking voltage; defines maximum input/output differential in buck or flyback secondary-side rectification |
| VF (max) | 0.85 V @ 3 A, 25°C - Directly reduces conduction loss in high-current paths; enables >92% efficiency in 5–12 V output converters |
| IR (max) | 100 µA @ 60 V, 25°C - Low leakage preserves light-load regulation and minimizes standby power in energy-efficient adapters |
| IFSM | 70 A @ 8.3 ms half-sine - Withstands inrush and transient surges without degradation in 100–240 VAC input front-end designs |
| TJ (max) | 125°C (continuous), 150°C (short-term) - Enables operation in thermally constrained enclosures without forced air cooling |
| RθJL | 23 °C/W - Allows direct thermal coupling to PCB copper pour for passive heat dissipation; eliminates need for heatsinks below 2 W dissipation |
| MSL | Level 1 per J-STD-020 - Supports standard reflow profiles without baking; compatible with high-speed SMT assembly lines |
Pinout & Package
DO-214AA (SMB) surface-mount package with molded plastic body (UL 94V-0), matte tin-plated leads, and cathode polarity indicated by a visible band on the case body. Weight: 0.100 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point under forward bias | Connected to lower-potential node (e.g., switch node in synchronous buck, transformer center-tap in full-wave) |
| Cathode | Current exit point under forward bias; marked with band | Connected to output rail or filter capacitor; polarity must match PCB silkscreen and layout |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances edge termination robustness against overvoltage transients and improves long-term reliability in unregulated input conditions |
| Low forward voltage (0.85 V) | Reduces I²R losses by ~35% vs. comparable 60V silicon diodes, directly improving converter efficiency and thermal margin |
| High surge current (70 A) | Survives cold-start inrush and line-dip recovery events without parametric shift or bond-wire fusing |
| Halogen-free & RoHS compliant | Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally regulated industrial and consumer end equipment |
Applications
| Server Power Supply | USB-C PD Adapter |
|---|---|
Use Scenario: Secondary-side rectification in 12 V/48 V intermediate bus converters delivering up to 120 W. IC Role / Device Role / Timing Role: Uncontrolled Schottky rectifier replacing synchronous MOSFETs where cost and simplicity outweigh marginal efficiency gains. Use Value: 0.85 V VF limits conduction loss to <1.3 W at 3 A, enabling natural convection cooling in compact server modules. | Use Scenario: Output rectification in 20 V/3 A USB-C Power Delivery adapters with universal AC input. IC Role / Device Role / Timing Role: Primary output diode in quasi-resonant flyback topology operating at 65–100 kHz. Use Value: 100 µA IR at 25°C ensures <15 mW standby loss, supporting Energy Star Level VI and CoC Tier 2 compliance. |
| LED Driver | Industrial DC-DC Module |
Use Scenario: Constant-current output rectification in isolated LED drivers powering streetlight arrays (36–48 V output). IC Role / Device Role / Timing Role: Freewheeling path during MOSFET off-time in buck-boost or SEPIC configurations. Use Value: 70 A IFSM handles lamp-strike surges without degradation, extending driver lifetime beyond 50,000 hours. | Use Scenario: Input protection and reverse-polarity blocking in 24 V industrial DC-DC modules with wide-input range (18–36 V). IC Role / Device Role / Timing Role: Reverse-biased blocking diode preventing backfeed from downstream capacitors during hot-swap events. Use Value: 60 V VRRM provides 50% margin above 36 V max input, ensuring safe operation under load-dump transients. |
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-3K60 | Same 60 V VRRM, 3 A IF, but higher VF (0.92 V typ), slightly higher RθJA (70°C/W) | Marginally lower efficiency at full load; requires larger thermal pad for same ambient temp | Preferred where Vishay supply chain alignment or legacy qualification is required |
| ON Semiconductor SB360 | Identical 60 V/3 A rating, VF = 0.75 V (typ) at 3 A, but only rated to 125°C TJ (no 150°C short-term spec) | Better conduction efficiency but reduced thermal headroom in sealed enclosures | Selected when lowest possible VF dominates over transient thermal capability |
Compared with VS-3K60 and SB360, the SK36B R5G offers balanced trade-offs: lower VF than VS-3K60 for better efficiency, and higher short-term thermal rating than SB360 for improved surge resilience-making it optimal for cost-sensitive, thermally constrained adapter and industrial module designs.
Availability
SK36B R5G is available at Aetrix Electronics and suitable for switching mode power supplies, USB-C power adapters, and industrial DC-DC modules requiring stable component supply across multi-year production cycles.
Supply support for SK36B R5G 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, specializing in power rectifiers, TVS devices, and MOSFETs for industrial and consumer markets.
The SK32B–SK320B family was designed specifically for high-efficiency, surface-mount AC-DC and DC-DC power conversion, emphasizing low VF, robust surge handling, and automated assembly compatibility in cost-sensitive power systems.
FAQ
What is the maximum junction temperature rating for SK36B R5G?
The SK36B R5G is rated for continuous operation up to +125°C junction temperature, with short-term capability up to +150°C. This allows reliable use in enclosed power adapters and industrial modules without active cooling, provided PCB thermal design meets the 23°C/W junction-to-lead resistance requirement.
Does SK36B R5G have a halogen-free construction?
Yes, the SK36B R5G complies with IEC 61249-2-21 for halogen-free materials and is RoHS-compliant. The molding compound and lead finish contain no brominated flame retardants or chlorine-based additives, meeting environmental requirements for consumer and industrial end equipment.
What is the reverse leakage current of SK36B R5G at elevated temperature?
At 60 V reverse bias and 125°C junction temperature, the SK36B R5G exhibits ≤2 mA typical reverse leakage current. This value is confirmed in the manufacturer's electrical specifications table and supports stable operation in high-ambient environments such as LED drivers and enclosed power supplies.
Is SK36B R5G suitable for automotive applications?
No, the SK36B R5G is not qualified for automotive use. Taiwan Semiconductor explicitly states that products in the SK32B–SK320B series are not designed for medical, life-saving, or life-sustaining applications-including automotive safety-critical systems-and lack AEC-Q101 qualification.
How is polarity identified on the SK36B R5G package?
Polarity is indicated by a cathode band printed on the molded case body of the SK36B R5G. This band aligns with the cathode terminal and must be matched to the PCB silkscreen and footprint orientation during placement to ensure correct forward conduction and avoid destructive reverse bias.
SK36B R5G 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):
- 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:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMB)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK36B R5G FAQ
1.How can I place an order for SK36B R5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK36B R5G 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 SK36B R5G reliable?
The price and inventory of SK36B R5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK36B R5G is usually 5 days.
3.What payment methods are accepted for SK36B R5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK36B R5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK36B R5G?
SK36B R5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK36B R5G 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 SK36B R5G?
For technical support, including SK36B R5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK36B R5G requirements.
6.How does Aetrix verify that SK36B R5G is sourced from the original manufacturer or authorized distributors?
All SK36B R5G 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 SK36B R5G meets industry standards.
7.What is the process for return or replacement of SK36B R5G?
All SK36B R5G units undergo pre-shipment inspection (PSI). If there is an issue with SK36B R5G, 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 SK36B R5G part is unused and in its original packaging.
Return procedure for SK36B R5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SK36B R5G Tags
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