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Taiwan Semiconductor Corporation SK59CHM6G
- Part No.:
- SK59CHM6G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK59CHM6G.pdf
- Description:
- DIODE SCHOTTKY 90V 5A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:4,463
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Product details
Overview
SK59CHM6G from Taiwan Semiconductor is a 5A, 90V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, AEC-Q101 qualified for automotive use, with 0.85V forward voltage at 5A/25°C and 0.3mA reverse leakage at rated VRRM. It serves as a freewheeling or reverse-battery protection diode in high-frequency DC/DC converters.
For engineers reviewing the SK59CHM6G datasheet, SK59CHM6G pinout, SK59CHM6G application, or SK59CHM6G equivalent, key selection criteria include its 90V VRRM, low VF for efficiency-critical 12V–48V systems, AEC-Q101 qualification for under-hood deployment, and DO-214AB thermal performance (RθJL = 13°C/W).
Technical Context
The SK59CHM6G implements a single-die Schottky junction optimized for low conduction loss and fast recovery-no minority-carrier storage delay-enabling operation up to several MHz. Its guard ring structure enhances ruggedness against transient overvoltage events common in automotive load-dump scenarios.
Designed for surface-mount assembly on standard PCBs with 16mm × 16mm copper pads, it delivers 5A average forward current with TJ limited to 150°C and withstands 120A non-repetitive surge (8.3ms half-sine), meeting JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - Maximum repetitive reverse voltage; defines safe blocking capability in 48V automotive bus applications |
| VF @ 5A, 25°C | 0.85 V - Low forward drop reduces power loss (4.25W conduction loss at full load), critical for thermal management |
| IR @ 90V, 25°C | 0.3 mA - Minimal leakage preserves battery standby life in always-on vehicle modules |
| IFSM | 120 A - Withstands high-energy transients like ISO 7637-2 pulse 5a without failure |
| RθJL | 13 °C/W - Enables direct heat transfer to PCB copper, supporting compact layout without heatsinks |
| TJ max | 150 °C - Rated junction temperature allows operation in engine compartment environments |
| Package | DO-214AB (SMC) - Industry-standard SMT outline with cathode band polarity marking and 0.210g mass |
Pinout & Package
DO-214AB (SMC) package: molded plastic body with matte tin-plated leads, cathode indicated by band, polarity critical for correct circuit integration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential node (e.g., ground or switch-node return); must handle full 5A continuous current |
| Cathode | Current exit point during forward conduction; reverse-blocking terminal | Marked by band; connects to higher-potential rail (e.g., battery+, input rail); sustains 90V reverse bias |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing per stress test plan |
| Guard ring structure | Improves edge breakdown immunity, enabling stable 90V operation without premature avalanche in high dv/dt conditions |
| Moisture sensitivity level 1 | No bake requirement before reflow; compatible with standard SMT lines without dry-pack handling |
| Halogen-free & RoHS compliant | Meets EU Directive 2011/65/EU and IPC-1752A material declaration requirements for green manufacturing |
| High surge current capability | 120A IFSM supports robustness against load dump and inductive kickback in motor control circuits |
Applications
| Automotive DC/DC Converters | Reverse Battery Protection |
|---|---|
Use Scenario: Step-down conversion from 12V/24V battery to 3.3V/5V for infotainment and ADAS ECUs. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or asynchronous buck topology. Use Value: 0.85V VF minimizes conduction loss, improving converter efficiency >92% at 5A output while maintaining TJ ≤125°C. | Use Scenario: Preventing damage when jumper cables are incorrectly connected to vehicle battery terminals. IC Role / Device Role / Timing Role: Series blocking diode in main power input path. Use Value: 90V VRRM safely clamps reverse-polarity transients up to ±36V; low IR ensures <1mW standby dissipation. |
| Car Lighting Systems | Industrial Power Supplies |
Use Scenario: LED headlamp driver with PWM dimming and thermal foldback protection. IC Role / Device Role / Timing Role: Output rectifier in boost or buck-boost LED current source. Use Value: Fast switching eliminates tail current distortion during 1–20kHz PWM; RθJL = 13°C/W enables direct PCB thermal coupling for compact heatsinkless design. | Use Scenario: 24V industrial PLC I/O module requiring high-reliability auxiliary supply. IC Role / Device Role / Timing Role: Input rectifier in offline AC-DC front-end or DC-DC isolation stage. Use Value: AEC-Q101 qualification provides extended lifetime assurance beyond commercial-grade diodes; 150°C TJ rating supports operation in sealed enclosures. |
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, 0.42V VF @ 5A - lower voltage rating but significantly lower forward drop | Not suitable for 48V systems; limited to ≤24V inputs where ultra-low VF is prioritized | Select only if system VIN ≤28V and efficiency gain outweighs reduced voltage margin |
| ON Semiconductor SB590 | 90V VRRM, 0.82V VF @ 5A, same DO-214AB package - near-identical electrical specs but not AEC-Q101 qualified | Lacks automotive qualification; requires additional reliability validation for automotive programs | Acceptable for industrial or consumer designs where AEC-Q101 is not mandated |
Compared with VS-50SQ030 and SB590, the SK59CHM6G uniquely combines 90V blocking, AEC-Q101 compliance, and 0.85V forward voltage-making it the only drop-in solution for automotive 48V subsystems requiring both ruggedness and efficiency without derating.
Availability
SK59CHM6G is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and car lighting systems requiring stable component supply across production lifecycles.
Supply support for SK59CHM6G 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 SK52CH–SK520CH series was developed specifically for high-reliability automotive power conversion, emphasizing AEC-Q101 qualification, low VF consistency across temperature, and robust surge immunity in harsh electrical environments.
FAQ
What is the maximum junction temperature rating for SK59CHM6G?
The SK59CHM6G has a maximum junction temperature (TJ) rating of +150°C, verified per absolute maximum ratings table. This allows reliable operation in under-hood automotive environments where ambient temperatures exceed 105°C. Derating curves confirm 5A average forward current is sustainable up to 150°C junction temperature when mounted on a 16mm × 16mm Cu pad PCB.
Is SK59CHM6G pin-compatible with other DO-214AB Schottky diodes?
Yes, SK59CHM6G uses the standard DO-214AB (SMC) footprint with anode and cathode terminals arranged identically to industry-standard parts such as SB590 and MBR590. The cathode band marking aligns with JEDEC DO-214AB mechanical drawings, ensuring direct PCB layout compatibility without redesign.
Does SK59CHM6G meet AEC-Q101 requirements for automotive use?
Yes, SK59CHM6G is explicitly AEC-Q101 qualified per the manufacturer's documentation. Testing includes HTGB, HTRB, temperature cycling, and ESD per AEC-Q101-003/004/005, confirming suitability for automotive powertrain, body electronics, and ADAS applications where reliability under thermal and electrical stress is mandatory.
What is the forward voltage of SK59CHM6G at 125°C junction temperature?
The forward voltage of SK59CHM6G increases with temperature: typical VF is 0.85V at 25°C and rises to approximately 0.72V at 125°C (per Fig.10 forward characteristics curve). This negative temperature coefficient improves current sharing in parallel configurations and reduces thermal runaway risk in high-temperature operation.
Can SK59CHM6G be used in reverse battery protection for 48V mild-hybrid vehicles?
Yes, SK59CHM6G is rated for 90V VRRM, providing 1.8× safety margin above nominal 48V systems and accommodating ISO 16750-2 load-dump spikes up to 65V. Its 0.3mA reverse leakage at 25°C and low thermal resistance ensure minimal power loss and stable operation in always-on 48V gateway modules.
SK59CHM6G 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
SK59CHM6G FAQ
1.How can I place an order for SK59CHM6G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK59CHM6G 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 SK59CHM6G reliable?
The price and inventory of SK59CHM6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK59CHM6G is usually 5 days.
3.What payment methods are accepted for SK59CHM6G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK59CHM6G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK59CHM6G?
SK59CHM6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK59CHM6G 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 SK59CHM6G?
For technical support, including SK59CHM6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK59CHM6G requirements.
6.How does Aetrix verify that SK59CHM6G is sourced from the original manufacturer or authorized distributors?
All SK59CHM6G 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 SK59CHM6G meets industry standards.
7.What is the process for return or replacement of SK59CHM6G?
All SK59CHM6G units undergo pre-shipment inspection (PSI). If there is an issue with SK59CHM6G, 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 SK59CHM6G part is unused and in its original packaging.
Return procedure for SK59CHM6G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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