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Taiwan Semiconductor Corporation SK54CHM6G
- Part No.:
- SK54CHM6G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK54CHM6G.pdf
- Description:
- DIODE SCHOTTKY 40V 5A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,440
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Product details
Overview
SK54CHM6G from Taiwan Semiconductor is a 5A, 40V AEC-Q101-qualified Schottky barrier rectifier in DO-214AB (SMC) package, featuring 0.55V forward voltage at 5A/25°C, 120A surge capability, and guard ring overvoltage protection-designed for automotive DC/DC converters and reverse battery protection circuits.
For engineers reviewing the SK54CHM6G datasheet, SK54CHM6G pinout, SK54CHM6G application, or SK54CHM6G equivalent, key selection criteria include its 40V VRRM, low VF at high current, AEC-Q101 qualification, moisture sensitivity level 1 rating, and DO-214AB thermal performance (RθJL = 13°C/W).
Technical Context
This discrete Schottky diode operates as a unidirectional power rectifier with single-die configuration and cathode-band polarity indication. Its 40V repetitive peak reverse voltage and 120A non-repetitive surge current support robust operation in automotive transients and switching converter freewheeling paths.
The device delivers low conduction loss via 0.55V forward voltage at 5A and 25°C, while maintaining <0.5mA reverse leakage at rated VR and 25°C. Thermal design is enabled by RθJA = 53°C/W on 16mm × 16mm Cu pad, and RθJC = 16°C/W to case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum reverse blocking voltage before breakdown; defines safe operating range in 12–24V automotive systems. |
| IF | 5 A - Continuous average forward current; supports sustained power delivery in compact DC/DC stages. |
| VF @ 5A, 25°C | 0.55 V - Low conduction loss enables >92% efficiency in 5V–12V buck converters at full load. |
| IFSM | 120 A - Peak surge current handling for load dump and cold-crank transient immunity. |
| TJ max | 150 °C - Junction temperature limit enabling operation in under-hood environments without derating. |
| RθJL | 13 °C/W - Low junction-to-lead thermal resistance supports direct PCB copper pad heat sinking. |
| Mechanical Package | DO-214AB (SMC) - Standardized surface-mount outline with 7.15 mm × 6.25 mm footprint and 2.45 mm height. |
Pinout & Package
Package: DO-214AB (SMC), molded plastic case with matte tin-plated leads, polarity indicated by cathode band, weight ≈ 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., switch node or ground return); requires thermal relief on PCB pour. |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to output rail or positive supply; carries full load current and must route with low-inductance path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive power electronics including engine control, lighting, and infotainment modules. |
| Guard ring structure | Enhances edge termination robustness against voltage overstress and improves dv/dt immunity (>10,000 V/µs). |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly without dry pack handling. |
| Halogen-free & RoHS compliant | Meets automotive environmental compliance requirements (ELV, REACH) and end-of-life recycling mandates. |
| High IFSM/IF ratio (24×) | Enables reliable operation during short-duration surges without thermal runaway or bond wire failure. |
Applications
| Automotive DC/DC Converters | Reverse Battery Protection |
|---|---|
Use Scenario: Step-down conversion from 12V/24V battery to 3.3V/5V rails in ADAS camera modules and body control units. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or asynchronous buck topologies. Use Value: 0.55V VF reduces conduction loss by ~35% vs. comparable 45V Schottkys, improving thermal margin at 5A. |
Use Scenario: Preventing damage when battery terminals are accidentally reversed during service or jump-starting. IC Role / Device Role / Timing Role: Series-blocking rectifier placed between battery input and system power rail. Use Value: 40V VRRM safely withstands double-battery (24V) systems with margin; 120A IFSM handles connection arcing events. |
| Car Lighting Drivers | Industrial Power Supplies |
Use Scenario: LED headlamp drivers requiring high-efficiency, compact rectification in thermally constrained housings. IC Role / Device Role / Timing Role: Output rectifier in boost or buck-boost LED current regulators. Use Value: DO-214AB package enables high power density; 150°C TJ max allows operation near hot optics assemblies. |
Use Scenario: 24V industrial PLC I/O modules needing rugged, long-lifetime rectification in DIN-rail enclosures. IC Role / Device Role / Timing Role: Input bridge leg or auxiliary supply rectifier in isolated AC/DC front-ends. Use Value: AEC-Q101 qualification ensures extended field life under vibration, thermal cycling, and humidity stress. |
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-50WQ04FN-M3/45 | Same 40V VRRM, 5A IF, but TO-220AC package; VF = 0.52V @ 5A; RθJA = 40°C/W (with heatsink) | Requires mechanical mounting and heatsinking; unsuitable for fully SMT designs | Select when higher thermal mass or legacy through-hole compatibility is required |
| ON Semiconductor SB540-E3/54 | 40V VRRM, 5A IF, DO-201AD package; VF = 0.54V @ 5A; RθJA = 65°C/W; not AEC-Q101 qualified | Larger footprint (9.5mm × 3.9mm), lower surge rating (100A), no automotive qualification | Select for cost-sensitive non-automotive industrial use where AEC-Q101 is not mandated |
Compared with VS-50WQ04FN-M3/45 and SB540-E3/54, SK54CHM6G uniquely combines AEC-Q101 qualification, DO-214AB SMT compatibility, and 13°C/W junction-to-lead thermal resistance-enabling compact, high-reliability automotive power stages without heatsinks or through-hole assembly.
Availability
SK54CHM6G is available at Aetrix Electronics and suitable for automotive DC/DC converters, reverse battery protection circuits, and car lighting drivers requiring stable component supply across production lifecycles.
Supply support for SK54CHM6G 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 devices, ESD protection, and automotive-qualified components.
The SK5xCH series was developed specifically for AEC-Q101-compliant automotive power rectification-targeting high-efficiency, high-surge, and thermally robust operation in engine bays, lighting systems, and body electronics.
FAQ
What is the maximum junction temperature rating for SK54CHM6G?
The SK54CHM6G has a maximum junction temperature (TJ) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating enables reliable operation in under-hood automotive environments where ambient temperatures exceed 105°C. The SK54CHM6G maintains specified electrical performance up to this limit when thermal design adheres to RθJA = 53°C/W on a 16mm × 16mm Cu pad.
Is SK54CHM6G qualified for automotive applications?
Yes, SK54CHM6G is AEC-Q101 qualified, as explicitly stated in the "Features" section of the Taiwan Semiconductor SK52CH–SK520CH datasheet (Version C2311). This qualification covers stress testing for temperature cycling, humidity bias, mechanical shock, and high-temperature operating life-making SK54CHM6G suitable for automotive power systems including body control modules, lighting, and infotainment power supplies.
What is the forward voltage of SK54CHM6G at 5A and 125°C?
The SK54CHM6G forward voltage at 5A and 125°C is not specified in the published datasheet. The datasheet provides VF = 0.55V only at 5A and 25°C. At elevated temperatures, VF decreases slightly due to Schottky diode physics, but no typ/max value is given for 125°C. Designers should apply derating or consult Taiwan Semiconductor's application engineering for thermal VF curves.
Does SK54CHM6G have a halogen-free and RoHS-compliant construction?
Yes, SK54CHM6G is both halogen-free and RoHS compliant, as confirmed in the "Features" list of the official Taiwan Semiconductor datasheet. The molding compound meets UL 94V-0 flammability rating, and the matte tin-plated leads comply with J-STD-002 solderability standards-ensuring environmental compliance for automotive and industrial end equipment.
What is the moisture sensitivity level (MSL) of SK54CHM6G?
The SK54CHM6G has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH without baking prior to reflow soldering. This eliminates pre-reflow bake steps in SMT assembly, reducing process complexity and cost-confirmed in the "Features" section of the Taiwan Semiconductor SK52CH–SK520CH datasheet.
SK54CHM6G 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):
- 40 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 @ 40 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
SK54CHM6G FAQ
1.How can I place an order for SK54CHM6G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK54CHM6G 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 SK54CHM6G reliable?
The price and inventory of SK54CHM6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK54CHM6G is usually 5 days.
3.What payment methods are accepted for SK54CHM6G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK54CHM6G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK54CHM6G?
SK54CHM6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK54CHM6G 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 SK54CHM6G?
For technical support, including SK54CHM6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK54CHM6G requirements.
6.How does Aetrix verify that SK54CHM6G is sourced from the original manufacturer or authorized distributors?
All SK54CHM6G 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 SK54CHM6G meets industry standards.
7.What is the process for return or replacement of SK54CHM6G?
All SK54CHM6G units undergo pre-shipment inspection (PSI). If there is an issue with SK54CHM6G, 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 SK54CHM6G part is unused and in its original packaging.
Return procedure for SK54CHM6G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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