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Taiwan Semiconductor Corporation SK53CHR7G
- Part No.:
- SK53CHR7G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK53CHR7G.pdf
- Description:
- DIODE SCHOTTKY 30V 5A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:5,965
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Product details
Overview
SK53CHR7G from Taiwan Semiconductor is a 30 V, 5 A Schottky barrier rectifier in DO-214AB (SMC) package, qualified to AEC-Q101 for automotive use. It delivers low forward voltage (0.55 V at 5 A, 25°C), high surge capability (120 A IFSM), and operates up to 150°C junction temperature. It serves as a freewheeling or reverse-battery protection diode in DC/DC converters for car lighting systems.
For engineers reviewing the SK53CHR7G datasheet, SK53CHR7G pinout, SK53CHR7G application, or SK53CHR7G equivalent, key selection criteria include its 30 V VRRM rating, 0.55 V VF at rated current, AEC-Q101 qualification, moisture sensitivity level 1 handling, and DO-214AB thermal performance (RθJL = 13°C/W).
Technical Context
The SK53CHR7G is a single-die, unidirectional Schottky rectifier optimized for low-loss, high-frequency switching in automotive power rails. Its guard ring structure provides overvoltage protection, and its matte tin-plated leads ensure reliable solderability per J-STD-002.
Designed for operation from –55°C to +150°C, it exhibits low reverse leakage (≤0.5 mA at 25°C, ≤20 mA at 100°C) and high dV/dt immunity (10,000 V/µs), making it suitable for noisy vehicle electrical environments with transient spikes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse voltage; defines safe blocking range in 12 V automotive systems with load dump transients. |
| IF | 5 A - Continuous forward current; supports medium-power DC/DC stages without forced cooling. |
| VF @ 5A, 25°C | 0.55 V - Low conduction loss; reduces power dissipation to ~2.75 W at full load. |
| IFSM | 120 A - Peak non-repetitive surge current; withstands inrush and fault currents in automotive circuits. |
| TJ max | +150°C - High junction temperature rating enables under-hood deployment without derating penalties. |
| RθJL | 13°C/W - Junction-to-lead thermal resistance; allows efficient heat transfer to PCB copper pads. |
| AEC-Q101 | Qualified - Meets stress test requirements for automotive discrete semiconductors including HTGB, HTRB, and TCT. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount plastic case with cathode band polarity indicator; 0.210 g mass; UL 94V-0 molding compound; JEDEC-compliant outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal | Connected to input/source side; accepts forward current flow into device. |
| Cathode | Current exit terminal | Marked by band; connects to output/load side; defines unidirectional conduction path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive reliability: 1000-cycle temperature cycling, 1000 h high-temp reverse bias, and unbiased HAST. |
| Guard ring structure | Enhances edge termination robustness against voltage overstress and improves VRRM consistency across production lots. |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly lines without dry-pack handling. |
| Low VF at high IF | 0.55 V at 5 A minimizes conduction losses in 12 V rail clamping and freewheeling paths. |
| High dV/dt immunity | 10,000 V/µs rating prevents false turn-on during fast transients in alternator-regulated systems. |
Applications
| DC/DC Converter Output Rectification | Reverse Battery Protection |
|---|---|
Use Scenario: Step-down converter in automotive infotainment power supply delivering 5 V/3 A from 12 V battery. IC Role / Device Role / Timing Role: Freewheeling Schottky rectifier replacing synchronous MOSFET to simplify control and reduce cost. Use Value: 0.55 V VF cuts conduction loss by >40% vs. standard PN diodes, improving efficiency and reducing heatsink need. |
Use Scenario: Protecting ECU power input against accidental reverse battery connection during service. IC Role / Device Role / Timing Role: Series-blocking diode placed between battery terminal and system input rail. Use Value: 120 A IFSM handles momentary short-circuit energy during misconnection; AEC-Q101 ensures long-term field reliability. |
| Car Lighting LED Driver | Automotive HVAC Blower Control |
Use Scenario: Constant-current LED driver for daytime running lights with PWM dimming and thermal foldback. IC Role / Device Role / Timing Role: Output rectifier in buck-derived topology managing 3–4 A average LED current. Use Value: Low VF and 150°C TJ rating sustain performance under hood ambient temperatures exceeding 85°C. |
Use Scenario: Freewheeling path for brushed DC motor driving HVAC air flaps in cabin climate control module. IC Role / Device Role / Timing Role: Clamp diode across motor winding to absorb inductive kickback during PWM switching. Use Value: 10,000 V/µs dV/dt rating prevents spurious conduction during rapid motor commutation events. |
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 | Same VRRM (30 V), higher IF (5.5 A), slightly higher VF (0.57 V typ), TO-277 package (smaller footprint) | TO-277 lacks AEC-Q101 certification; not approved for automotive safety-critical modules | Select when space-constrained layout permits and AEC-Q101 is not mandated. |
| ON Semiconductor SB530 | Same VRRM (30 V), identical DO-214AB package, VF = 0.54 V, but only industrial-grade (no AEC-Q101) | Not qualified for automotive temperature cycling or humidity testing; limited to under-dash consumer electronics | Choose for cost-sensitive non-automotive designs where 150°C operation is not required. |
Compared with SK53CHR7G, VS-50SQ030 offers marginally higher current rating in a smaller package but lacks automotive qualification, while SB530 matches footprint and VF closely yet omits AEC-Q101 validation-making SK53CHR7G the sole choice for certified automotive power rectification.
Availability
SK53CHR7G is available at Aetrix Electronics and suitable for automotive lighting systems, DC/DC converters, and reverse battery protection circuits requiring stable component supply with AEC-Q101 assurance and extended temperature operation.
Supply support for SK53CHR7G 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 global automotive, industrial, and consumer markets since 1979.
The SK5xCH series was developed specifically for AEC-Q101-compliant automotive power conversion, emphasizing low VF, high surge tolerance, and robust thermal performance in surface-mount packages for engine bay and cabin electronics.
FAQ
What is the maximum junction temperature rating for SK53CHR7G?
The SK53CHR7G has a maximum junction temperature (TJ max) of +150°C, enabling reliable operation in high-ambient environments such as under-hood automotive applications. This rating is validated per AEC-Q101 thermal test conditions and supports continuous operation without derating up to this limit when mounted on a 16 mm × 16 mm Cu pad per JEDEC standards.
Is SK53CHR7G qualified for automotive applications?
Yes, SK53CHR7G is AEC-Q101 qualified, having passed all required stress tests including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), temperature cycling (TCT), and unbiased highly accelerated stress test (uHAST). This makes it suitable for automotive power management modules where reliability under thermal and electrical stress is critical.
What is the forward voltage drop of SK53CHR7G at rated current?
The SK53CHR7G exhibits a typical forward voltage (VF) of 0.55 V at 5 A and 25°C junction temperature, measured with 0.3 ms pulse width. This low VF directly reduces conduction losses in high-current paths, supporting thermally efficient designs in automotive DC/DC converters and LED drivers.
Does SK53CHR7G have moisture sensitivity level (MSL) classification?
Yes, SK53CHR7G is rated MSL Level 1 per J-STD-020, meaning it can be stored indefinitely at ambient conditions and requires no baking prior to reflow soldering. This simplifies manufacturing logistics and eliminates moisture-related popcorning risk during standard SMT assembly.
What package type does SK53CHR7G use and what are its key mechanical features?
SK53CHR7G uses the DO-214AB (SMC) surface-mount package, featuring a UL 94V-0 compliant molding compound, matte tin-plated leads meeting J-STD-002 solderability, and a cathode band for polarity identification. Its JEDEC-standard outline supports automated placement and provides RθJL = 13°C/W thermal performance on standard PCB copper pads.
SK53CHR7G 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):
- 30 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 30 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
SK53CHR7G FAQ
1.How can I place an order for SK53CHR7G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK53CHR7G 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 SK53CHR7G reliable?
The price and inventory of SK53CHR7G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK53CHR7G is usually 5 days.
3.What payment methods are accepted for SK53CHR7G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK53CHR7G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK53CHR7G?
SK53CHR7G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK53CHR7G 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 SK53CHR7G?
For technical support, including SK53CHR7G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK53CHR7G requirements.
6.How does Aetrix verify that SK53CHR7G is sourced from the original manufacturer or authorized distributors?
All SK53CHR7G 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 SK53CHR7G meets industry standards.
7.What is the process for return or replacement of SK53CHR7G?
All SK53CHR7G units undergo pre-shipment inspection (PSI). If there is an issue with SK53CHR7G, 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 SK53CHR7G part is unused and in its original packaging.
Return procedure for SK53CHR7G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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