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Taiwan Semiconductor Corporation SK59CHR7G
- Part No.:
- SK59CHR7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK59CHR7G.pdf
- Description:
- DIODE SCHOTTKY 90V 5A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,070
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Product details
Overview
SK59CHR7G from Taiwan Semiconductor is a 5A, 90V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, qualified to AEC-Q101, with 0.85V forward voltage at 5A/25°C, 120A surge capability, and 0.3mA reverse leakage at 25°C - used in automotive DC/DC converters and reverse battery protection circuits.
For engineers reviewing the SK59CHR7G datasheet, SK59CHR7G pinout, SK59CHR7G application, or SK59CHR7G equivalent, key selection criteria include its 90V VRRM, low VF for high-efficiency power conversion, AEC-Q101 qualification for automotive environments, and DO-214AB thermal performance (RθJL = 13°C/W).
Technical Context
This discrete Schottky diode uses a single-die construction with guard ring overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 150°C maximum junction temperature and JESD201 Class 2 whisker resistance support harsh automotive under-hood operation.
Designed for high-frequency switching, it delivers low conduction loss (VF = 0.85V @ 5A) and fast recovery with dV/dt rating of 10,000 V/µs. Reverse leakage remains ≤0.3mA at 25°C and ≤5mA at 125°C, enabling stable freewheeling in compact DC/DC topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum repetitive reverse voltage; defines safe blocking capability in 12–48V automotive bus applications |
| IF | 5 A - Continuous forward current; supports mid-power converter outputs without forced cooling |
| IFSM | 120 A - Non-repetitive surge rating (8.3ms); withstands load dump transients in vehicle electrical systems |
| VF | 0.85 V @ 5A, 25°C - Low conduction loss enables >92% efficiency in 5–12V buck converters |
| IR | 0.3 mA @ 90V, 25°C - Minimal leakage preserves battery standby life in always-on modules |
| RθJL | 13 °C/W - Junction-to-lead thermal resistance; allows direct PCB copper pad heat sinking without heatsink |
| TJ max | 150 °C - Enables operation in engine compartment ambient up to 105°C with derating margin |
Pinout & Package
Package: DO-214AB (SMC), surface-mount plastic case with cathode band polarity marking, 0.210g weight, UL 94V-0 molding compound, and J-STD-020 Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point | Connected to lower-potential node (e.g., switch node in synchronous buck); requires adequate copper area for thermal dissipation |
| Cathode | Current exit point | Marked by band; ties to output rail or ground return; critical for reverse polarity protection orientation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements - eliminates need for additional qualification in Tier-1 designs |
| Guard ring structure | Enhances ruggedness against transient overvoltage events (e.g., ISO 7637-2 pulses) without external TVS |
| Low VF (0.85V) | Reduces power loss by ~35% vs. comparable 100V Si diodes - directly improves thermal budget in sealed enclosures |
| Moisture sensitivity Level 1 | Enables standard SMT reflow without baking - lowers manufacturing cost and avoids moisture-induced popcorning |
| Halogen-free & RoHS | Meets EU ELV and OEM environmental compliance mandates for global vehicle programs |
Applications
| Automotive DC/DC Converters | Reverse Battery Protection |
|---|---|
Use Scenario: Step-down conversion from 12V/48V vehicle battery to 3.3V/5V MCU rails in ADAS ECUs. IC Role / Device Role / Timing Role: Freewheeling diode in asynchronous buck topology; conducts during high-side FET off-time. Use Value: 0.85V VF minimizes conduction loss; 120A IFSM survives cranking transients; AEC-Q101 ensures reliability across temperature cycles. | Use Scenario: Preventing damage when jumper cables are incorrectly connected during battery service. IC Role / Device Role / Timing Role: Series-blocking element placed between battery input and system power rail. Use Value: 90V VRRM exceeds 48V system max; low VF avoids voltage drop in normal operation; DO-214AB handles 5A continuous load current. |
| Car Lighting Drivers | Industrial 24V Power Supplies |
Use Scenario: LED headlamp driver with PWM dimming and thermal foldback in modern vehicles. IC Role / Device Role / Timing Role: Output rectifier in boost or SEPIC stage supplying constant current to LED strings. Use Value: Fast switching and low IR enable stable regulation at 100–500kHz; cathode band simplifies automated optical inspection alignment. | Use Scenario: DIN-rail mounted 24V industrial PSU powering PLC I/O modules and sensors. IC Role / Device Role / Timing Role: Secondary-side rectifier in flyback or forward converter delivering regulated 24V output. Use Value: RθJL = 13°C/W allows mounting on 16mm × 16mm Cu pad for passive thermal management; halogen-free meets IEC 61249-2-21. |
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-50SQ030 | 30V VRRM, 5A, VF = 0.42V @ 5A - lower voltage rating, lower VF | Not suitable for 48V+ systems; better for 5–12V logic supplies | Select only if system VR ≤ 30V and ultra-low VF is prioritized over surge robustness |
| ON Semiconductor SB590 | 90V VRRM, 5A, VF = 0.87V @ 5A, AEC-Q101 qualified - nearly identical specs | Same automotive use cases; slightly higher VF increases conduction loss by ~2.5% | Drop-in alternative with identical footprint and qualification; verify marking and reel packaging compatibility |
Compared with SK59CHR7G, VS-50SQ030 offers lower VF but insufficient voltage margin for 48V automotive systems, while SB590 matches VRRM, qualification, and thermal specs - making it the preferred functional alternative where second-source assurance is required.
Availability
SK59CHR7G is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and car lighting drivers requiring stable component supply with AEC-Q101 compliance and long-term production continuity.
Supply support for SK59CHR7G 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, serving automotive, industrial, and consumer markets since 1979.
The SK5xCH series targets high-reliability automotive power conversion, emphasizing AEC-Q101 qualification, low-loss Schottky performance, and robust packaging for under-hood deployment.
FAQ
What is the peak repetitive reverse voltage rating for SK59CHR7G?
The SK59CHR7G has a peak repetitive reverse voltage (VRRM) rating of 90 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version C2311). It defines the maximum DC or sinusoidal AC voltage the device can block continuously without breakdown, making SK59CHR7G suitable for 48V automotive systems with safety margin.
Is SK59CHR7G qualified for automotive applications?
Yes, SK59CHR7G is AEC-Q101 qualified, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. This qualification covers stress tests including high-temperature operating life, temperature cycling, and ESD, confirming suitability for automotive power electronics such as body control modules and lighting drivers where reliability under thermal and mechanical stress is critical.
What is the forward voltage of SK59CHR7G at rated current?
The forward voltage (VF) of SK59CHR7G is 0.85 V at 5 A and 25°C junction temperature, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and reflects low conduction loss essential for high-efficiency DC/DC conversion. At elevated temperatures, VF decreases slightly, improving thermal stability in real-world operation.
Does SK59CHR7G have moisture sensitivity concerns for SMT assembly?
No, SK59CHR7G has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it can be stored indefinitely at ≤30°C/85% RH and processed using standard reflow profiles without pre-baking. This eliminates moisture-related defects like popcorning during reflow, reducing manufacturing risk and cost for high-volume automotive PCB assembly.
What package type does SK59CHR7G use, and what are its key mechanical features?
SK59CHR7G uses the DO-214AB (SMC) surface-mount package. Key features include matte tin-plated leads compliant with J-STD-002, UL 94V-0 flammability-rated molding compound, cathode band polarity marking, and a weight of approximately 0.210 g. The package outline conforms to JEDEC DO-214AB standards, ensuring compatibility with standard SMT pick-and-place and reflow equipment.
SK59CHR7G 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK59CHR7G FAQ
1.How can I place an order for SK59CHR7G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK59CHR7G 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 SK59CHR7G reliable?
The price and inventory of SK59CHR7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK59CHR7G is usually 5 days.
3.What payment methods are accepted for SK59CHR7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK59CHR7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK59CHR7G?
SK59CHR7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK59CHR7G 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 SK59CHR7G?
For technical support, including SK59CHR7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK59CHR7G requirements.
6.How does Aetrix verify that SK59CHR7G is sourced from the original manufacturer or authorized distributors?
All SK59CHR7G 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 SK59CHR7G meets industry standards.
7.What is the process for return or replacement of SK59CHR7G?
All SK59CHR7G units undergo pre-shipment inspection (PSI). If there is an issue with SK59CHR7G, 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 SK59CHR7G part is unused and in its original packaging.
Return procedure for SK59CHR7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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