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Taiwan Semiconductor Corporation SK54C M6G
- Part No.:
- SK54C M6G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK54C M6G.pdf
- Description:
- DIODE SCHOTTKY 40V 5A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,544
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Product details
Overview
SK54C M6G from Taiwan Semiconductor is a 5A, 40V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, featuring low forward voltage (0.55 V @ 5 A, 25°C), high surge current capability (120 A), and junction temperature rating up to 150°C. It serves as a primary output rectifier in high-efficiency AC/DC adapters and DC/DC converters.
For engineers reviewing the SK54C M6G datasheet, SK54C M6G pinout, SK54C M6G application, or SK54C M6G equivalent, key selection criteria include its 40 V repetitive peak reverse voltage, 0.55 V forward drop at rated current, 13 °C/W junction-to-lead thermal resistance, moisture sensitivity level 1 compliance, and RoHS/halogen-free qualification for industrial power supply designs.
Technical Context
The SK54C M6G is a single-die, unidirectional Schottky rectifier optimized for high-frequency switching applications. 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 delivers stable reverse leakage (≤0.5 mA @ 40 V, 25°C; ≤20 mA @ 40 V, 100°C) and supports fast transient response with 10,000 V/µs critical dV/dt rating - essential for SMPS secondary-side rectification where low conduction loss and minimal reverse recovery are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage; defines safe blocking capability in 36–42 V nominal output rails |
| IF | 5 A - Continuous forward current rating; supports sustained load delivery without derating up to 115°C ambient on standard PCB |
| VF | 0.55 V @ 5 A, 25°C - Low conduction loss enabling >92% efficiency in 5–12 V output converters |
| IFSM | 120 A - Non-repetitive surge rating for handling inrush and fault transients without failure |
| RθJL | 13 °C/W - Junction-to-lead thermal resistance; enables direct heat transfer to copper pad for thermal management |
| TJ max | +150°C - Maximum junction temperature; allows operation in enclosed, high-ambient environments |
| MSL | Level 1 (per J-STD-020) - No floor life limitation; suitable for standard SMT reflow without baking |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, molded plastic case with cathode band polarity indicator; weight ≈ 0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Connected to transformer secondary or switch node; accepts forward current flow into device |
| Cathode | Output current terminal | Delivers rectified DC to output capacitor; marked by visible band on body; connects to positive rail |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage | 0.55 V @ 5 A, 25°C - Reduces conduction loss by ≥30% vs. comparable 40 V Si diodes, improving thermal margin |
| Guard ring protection | Integrated overvoltage ruggedization - enhances reliability under line surges and inductive kickback in flyback topologies |
| High surge current | 120 A IFSM (8.3 ms half-sine) - Withstands repeated startup surges and short-circuit events without parametric shift |
| Moisture sensitivity level 1 | No bake requirement before reflow - eliminates process step and reduces risk of popcorning in high-volume SMT lines |
| RoHS & halogen-free | Compliant with IPC-1752 and EU Directive 2011/65/EU - meets environmental requirements for global industrial and consumer shipments |
Applications
| AC/DC Adapters | LED Drivers |
|---|---|
Use Scenario: Secondary-side rectification in 12–24 V, 30–60 W wall adapters for consumer electronics. IC Role / Device Role / Timing Role: Unidirectional power conversion element; replaces slower PN diodes to minimize losses and improve light-load efficiency. Use Value: 0.55 V VF reduces rectifier power loss by ~1.2 W vs. legacy 0.8 V diodes at 5 A, lowering thermal stress on PCB layout. |
Use Scenario: Output rectification in constant-current LED drivers for commercial lighting fixtures. IC Role / Device Role / Timing Role: High-reliability freewheeling path during PWM dimming transitions; handles repetitive current reversal. Use Value: 120 A surge rating ensures robustness against LED string open-circuit transients and ESD coupling events. |
| Industrial SMPS | USB PD Power Delivery |
Use Scenario: Main output rectifier in 24 V/5 A industrial DC power supplies operating in extended temperature ranges. IC Role / Device Role / Timing Role: Primary energy transfer interface between transformer and bulk capacitor; operates continuously at elevated ambient temperatures. Use Value: 150°C TJ max and 13 °C/W RθJL enable stable operation at 85°C ambient without forced air cooling. |
Use Scenario: Synchronous rectifier alternative in compact 20 V/3 A USB PD 3.0 adapters targeting portable devices. IC Role / Device Role / Timing Role: Low-loss DC path in buck-derived topology; selected for minimal VF drift across temperature. Use Value: 0.55 V VF at 25°C and <0.65 V at 100°C maintains tight voltage regulation and minimizes thermal runaway risk. |
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-50WQ04FNTR-1 | Same 40 V VRRM, 5 A IF, but VF = 0.52 V @ 5 A; slightly lower RθJA (45 °C/W vs. 53 °C/W) | Better efficiency at ultra-light loads; tighter VF distribution for binning-sensitive designs | Preferred when sub-50 mV VF reduction justifies higher unit cost and longer lead time |
| ON Semiconductor SB540-E3/54 | 40 V VRRM, 5 A IF, but VF = 0.58 V @ 5 A; MSL Level 1 confirmed, same DO-214AB package | Higher forward drop increases conduction loss by ~0.15 W at full load; identical thermal footprint | Suitable for cost-sensitive designs where 30 mV VF penalty is acceptable and second-source assurance is required |
Compared with VS-50WQ04FNTR-1 and SB540-E3/54, the SK54C M6G offers the optimal balance of low VF (0.55 V), proven MSL Level 1 handling, and broad distributor availability - making it ideal for volume production of mid-efficiency industrial adapters where thermal margin and process simplicity are prioritized.
Availability
SK54C M6G is available at Aetrix Electronics and suitable for AC/DC adapters, LED drivers, and industrial SMPS requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.
Supply support for SK54C M6G 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 rectifiers, TVS diodes, and MOSFETs since 1979.
The SK52C–SK520C family was engineered specifically for high-efficiency, high-reliability secondary-side rectification in compact switching power supplies - emphasizing low VF, rugged surge tolerance, and seamless SMT manufacturability.
FAQ
What is the maximum junction temperature rating for the SK54C M6G?
The SK54C M6G has a maximum junction temperature (TJ) rating of +150°C, allowing continuous operation in thermally constrained enclosures and high-ambient industrial environments. This rating is validated per absolute maximum ratings table in the official TSC datasheet revision S2311, and the device maintains specified electrical parameters up to this limit when thermal design adheres to the recommended 16 mm × 16 mm copper pad layout.
Does the SK54C M6G have a defined moisture sensitivity level (MSL)?
Yes, the SK54C M6G is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and requires no baking prior to surface-mount reflow. This simplifies manufacturing logistics and eliminates moisture-related defects such as popcorn cracking - a key advantage over MSL Level 3+ Schottky rectifiers in high-throughput assembly lines.
What is the forward voltage of the SK54C M6G at 5 A and 100°C junction temperature?
The SK54C M6G exhibits a typical forward voltage of approximately 0.62 V at 5 A and 100°C junction temperature, derived from interpolation of the "Typical Forward Characteristics" curves (Fig.4 and Fig.6) in the TSC datasheet S2311. This value remains significantly lower than silicon PN diodes, supporting stable efficiency across wide thermal operating ranges.
Is the SK54C M6G RoHS and halogen-free compliant?
Yes, the SK54C M6G is fully RoHS compliant per EU Directive 2011/65/EU and halogen-free per IEC 61249-2-21. These qualifications are explicitly stated in the "Features" section of the TSC SK52C–SK520C datasheet (S2311), and the device carries the "G" suffix in its marking code (e.g., SK54C M6G) to denote green compound usage.
What is the repetitive peak reverse voltage (VRRM) of the SK54C M6G?
The SK54C M6G has a repetitive peak reverse voltage (VRRM) of 40 V, as confirmed in the "Absolute Maximum Ratings" table of the TSC datasheet S2311. This rating defines the maximum allowable reverse-biased voltage the device can block repeatedly without breakdown - making it suitable for 36 V nominal output rails with adequate safety margin.
SK54C M6G 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AB (SMC)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK54C M6G FAQ
1.How can I place an order for SK54C M6G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK54C M6G 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 SK54C M6G reliable?
The price and inventory of SK54C M6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK54C M6G is usually 5 days.
3.What payment methods are accepted for SK54C M6G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK54C M6G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK54C M6G?
SK54C M6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK54C M6G 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 SK54C M6G?
For technical support, including SK54C M6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK54C M6G requirements.
6.How does Aetrix verify that SK54C M6G is sourced from the original manufacturer or authorized distributors?
All SK54C M6G 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 SK54C M6G meets industry standards.
7.What is the process for return or replacement of SK54C M6G?
All SK54C M6G units undergo pre-shipment inspection (PSI). If there is an issue with SK54C M6G, 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 SK54C M6G part is unused and in its original packaging.
Return procedure for SK54C M6G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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