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Taiwan Semiconductor Corporation SK59C R7G
- Part No.:
- SK59C R7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK59C R7G.pdf
- Description:
- DIODE SCHOTTKY 90V 5A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,461
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Product details
Overview
SK59C R7G from Taiwan Semiconductor is a 5A, 90V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, optimized for high-efficiency switching power supplies with low forward voltage (0.85 V at 5 A, 25°C) and high surge capability (120 A IFSM). It features guard ring overvoltage protection, J-STD-020 Level 1 moisture sensitivity, and RoHS/halogen-free compliance.
For engineers reviewing the SK59C R7G datasheet, SK59C R7G pinout, SK59C R7G application, or SK59C R7G equivalent, key selection factors include its 90 V repetitive peak reverse voltage, 0.85 V forward drop at rated current, 5 mA max reverse leakage at 125°C, thermal resistance of 13°C/W (junction-to-lead), and compatibility with automated SMT placement on standard PCB pads.
Technical Context
The SK59C R7G implements a single-die Schottky junction structure enabling fast recovery (no minority carrier storage) and low switching losses. Its 90 V VRRM rating targets mid-voltage DC-DC converters and offline SMPS secondary-side rectification where efficiency and thermal management are critical.
Thermal performance is defined with junction-to-lead resistance of 13°C/W and junction-to-ambient of 53°C/W on a 16 mm × 16 mm Cu pad - confirming suitability for compact, convection-cooled industrial power modules without forced airflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum repetitive reverse blocking voltage; sets upper limit for output rectification in 48–72 V input SMPS designs |
| IF | 5 A continuous - Rated average forward current; supports sustained load delivery in adapters and lighting drivers |
| VF @ 5 A, 25°C | 0.85 V - Low conduction loss reduces heat generation and improves system efficiency vs. silicon diodes |
| IFSM (8.3 ms) | 120 A - Withstands high-energy inrush and transient surges during startup or fault conditions |
| IR @ 90 V, 125°C | 5 mA - Controlled reverse leakage ensures stable operation in elevated ambient temperature environments |
| RθJL | 13 °C/W - Enables direct thermal path to PCB copper; simplifies heatsinking in space-constrained layouts |
| TJ Range | −55°C to +150°C - Supports operation across industrial and automotive under-hood temperature ranges |
Pinout & Package
Package: DO-214AB (SMC), surface-mount plastic case with matte tin-plated leads, cathode indicated by band. Weight: 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction | Connected to lower-potential node (e.g., transformer secondary center-tap or switch node return) |
| Cathode | Output terminal for forward conduction | Connected to output rail; polarity marked by visible band on molded body |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances ruggedness against transient overvoltage events without external snubbers |
| J-STD-020 Level 1 moisture sensitivity | Enables standard reflow without baking or special handling prior to assembly |
| UL 94V-0 molding compound | Meets flame-retardancy requirements for safety-critical power supply enclosures |
| 10,000 V/µs dV/dt rating | Prevents false turn-on during fast-switching transients in high-frequency converters |
| RoHS and halogen-free compliance | Supports global environmental regulations and enables use in green electronics programs |
Applications
| Server Power Supply Rectification | Industrial LED Driver Output Stage |
|---|---|
Use Scenario: Secondary-side rectification in 48 V output, 300 W server PSUs operating at 200–500 kHz switching frequency. IC Role / Device Role / Timing Role: High-current freewheeling diode replacing synchronous MOSFETs where cost and simplicity outweigh marginal efficiency gain. Use Value: 0.85 V VF minimizes conduction loss at 5 A load; 120 A IFSM handles cold-start surges without derating. |
Use Scenario: Constant-current output rectification in outdoor-rated 100 W LED streetlight drivers exposed to −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Unidirectional current path delivering regulated DC to LED strings after buck converter stage. Use Value: −55°C to +150°C TJ range ensures reliability in sealed, thermally isolated housings; 5 mA IR at 125°C prevents thermal runaway. |
| USB-C PD Adapter Output | Telecom DC-DC Module Input Protection |
Use Scenario: Output rectification in compact 65 W USB-C power adapters using active clamp flyback topology. IC Role / Device Role / Timing Role: Fast-recovery rectifier handling high-frequency, high-duty-cycle conduction with minimal reverse recovery loss. Use Value: Schottky architecture eliminates reverse recovery charge (Qrr ≈ 0), reducing EMI and improving light-load efficiency. |
Use Scenario: Reverse polarity and surge protection at input of 48 V telecom DC-DC modules subjected to lightning-induced transients. IC Role / Device Role / Timing Role: Primary protection diode placed before input filter to block reverse connection and clamp short-duration surges. Use Value: Guard ring design withstands >100 V non-repetitive transients; 13°C/W RθJL allows direct mounting to chassis ground plane for thermal stability. |
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-50SQ045NTR-M3 | 45 V VRRM, 5 A IF, VF = 0.52 V @ 5 A - lower voltage rating but significantly lower forward drop | Suitable only for ≤32 V output systems; not interchangeable in 48–72 V designs requiring 90 V blocking | Select when optimizing for ultra-low VF in low-voltage, high-current rails where VRRM margin is sufficient |
| ON Semiconductor SB590-E3/54 | 90 V VRRM, 5 A IF, VF = 0.88 V @ 5 A, RθJA = 50°C/W - nearly identical electrical specs, slightly higher VF | Compatible in same PCB footprint (DO-214AB); validated for industrial motor drive auxiliary supplies | Preferred where second-source qualification is required and minor VF trade-off is acceptable |
Compared with VS-50SQ045NTR-M3 and SB590-E3/54, the SK59C R7G offers balanced 90 V blocking and 0.85 V VF while maintaining J-STD-020 Level 1 handling and UL 94V-0 compliance - making it optimal for cost-sensitive, thermally constrained 48–72 V SMPS where both voltage margin and conduction loss matter.
Availability
SK59C R7G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and USB-C PD adapters requiring stable component supply, full traceability, and long-term production support.
Supply support for SK59C R7G 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 semiconductor manufacturer specializing in discrete power devices, including Schottky rectifiers, TVS diodes, and MOSFETs, with ISO 9001 and IATF 16949 certification.
The SK52C–SK520C family was engineered for high-efficiency, surface-mount rectification in industrial and consumer power conversion - emphasizing low VF, robust surge capability, and seamless SMT manufacturability.
FAQ
What is the maximum junction temperature rating for SK59C R7G?
The SK59C R7G has a maximum junction temperature (TJ MAX) of +150°C, allowing reliable operation in enclosed, high-ambient-temperature environments such as sealed LED drivers or industrial power modules. This rating is validated under specified thermal conditions including RθJL = 13°C/W and proper PCB copper area per JEDEC DO-214AB layout guidelines.
Does SK59C R7G have a specified reverse recovery time (trr)?
No - the SK59C R7G is a Schottky barrier diode and exhibits no minority carrier storage, so reverse recovery time (trr) is effectively zero. This eliminates reverse recovery loss and associated EMI, distinguishing it from PN-junction rectifiers. The datasheet confirms this behavior via negligible Qrr in electrical specifications.
Is SK59C R7G compatible with lead-free reflow soldering processes?
Yes - the SK59C R7G uses matte tin-plated leads compliant with J-STD-002 and is rated for lead-free reflow profiles up to 260°C peak temperature. Its J-STD-020 Level 1 moisture sensitivity classification means it can be placed directly into reflow without pre-baking, simplifying manufacturing flow.
What is the cathode marking method on SK59C R7G?
The cathode of the SK59C R7G is clearly indicated by a molded band on the DO-214AB (SMC) package body. Per mechanical data, polarity identification is unambiguous and consistent with industry-standard SMC diode orientation, ensuring correct placement during automated pick-and-place.
How does the guard ring feature improve reliability in SK59C R7G?
The guard ring in SK59C R7G enhances edge termination robustness, preventing premature avalanche breakdown at the die periphery under transient overvoltage stress. This design increases the device's ability to withstand repetitive line surges and ESD events without degradation - a key factor in long-life AC-DC adapter and telecom power applications.
SK59C R7G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AB, SMC
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 90 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 850 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 300 µA @ 90 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK59C R7G FAQ
1.How can I place an order for SK59C R7G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK59C R7G 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 SK59C R7G reliable?
The price and inventory of SK59C R7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK59C R7G is usually 5 days.
3.What payment methods are accepted for SK59C R7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK59C R7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK59C R7G?
SK59C R7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK59C R7G 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 SK59C R7G?
For technical support, including SK59C R7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK59C R7G requirements.
6.How does Aetrix verify that SK59C R7G is sourced from the original manufacturer or authorized distributors?
All SK59C R7G 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 SK59C R7G meets industry standards.
7.What is the process for return or replacement of SK59C R7G?
All SK59C R7G units undergo pre-shipment inspection (PSI). If there is an issue with SK59C R7G, 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 SK59C R7G part is unused and in its original packaging.
Return procedure for SK59C R7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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