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Taiwan Semiconductor Corporation SK55CHM6G
- Part No.:
- SK55CHM6G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AB, SMC
- Datasheet:
-
SK55CHM6G.pdf
- Description:
- DIODE SCHOTTKY 50V 5A DO214AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,522
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Product details
Overview
SK55CHM6G from Taiwan Semiconductor is a 5A, 50V Schottky barrier surface-mount rectifier in DO-214AB (SMC) package, qualified to AEC-Q101, with 0.75V forward voltage at 5A and 0.5mA reverse current at 25°C. It delivers high surge capability (120A IFSM), low power loss, and is used in automotive DC/DC converters and reverse battery protection circuits.
For engineers reviewing the SK55CHM6G datasheet, SK55CHM6G pinout, SK55CHM6G application, or SK55CHM6G equivalent, key selection criteria include its 50V VRRM rating, thermal resistance (RθJL = 13°C/W), AEC-Q101 qualification, and suitability for high-frequency, low-voltage power conversion where low VF and fast switching are critical.
Technical Context
This Schottky diode uses a single-die construction with guard ring for overvoltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its junction temperature range spans –55°C to +150°C, and it meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity.
The device exhibits dV/dt capability of 10,000 V/µs and operates with RθJA = 53°C/W on a 16mm × 16mm Cu pad PCB. Reverse leakage remains ≤0.5 mA at 25°C and ≤10 mA at 100°C under rated VR, supporting stable performance in thermally demanding automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 12–48V automotive systems. |
| IF | 5 A - Continuous forward current rating; supports medium-power DC/DC stages without forced cooling. |
| VF @ 5A, 25°C | 0.75 V - Low conduction loss enabling >92% efficiency in synchronous rectification applications. |
| IR @ 50V, 25°C | 0.5 mA - Minimal leakage ensures low standby power in battery-connected circuits like reverse polarity protection. |
| IFSM (8.3ms) | 120 A - High surge tolerance handles load dump transients in automotive electrical systems. |
| RθJL | 13 °C/W - Efficient heat transfer from junction to lead enables compact PCB layout with minimal copper area. |
| TJ max | +150 °C - Enables operation in engine bay or under-hood locations per AEC-Q101 stress requirements. |
Pinout & Package
Package: DO-214AB (SMC), surface-mount, cathode indicated by band, weight ≈0.210 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry point during forward conduction | Connected to lower-potential side (e.g., ground or switch node) in freewheeling or reverse protection configurations. |
| Cathode | Current exit point during forward conduction; marked by band | Connected to higher-potential rail (e.g., battery+, input rail); polarity must be observed to prevent catastrophic failure. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables use in safety-critical vehicle subsystems. |
| Guard ring structure | Enhances edge termination robustness against transient overvoltage, improving long-term stability in noisy 12V/24V supply rails. |
| Moisture sensitivity level 1 | No bake requirement prior to reflow; simplifies SMT assembly and reduces manufacturing risk in high-volume automotive production. |
| Halogen-free & RoHS-compliant | Meets global environmental compliance mandates (EU RoHS, JEITA EG02) without compromising thermal or electrical performance. |
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 modules. IC Role / Device Role / Timing Role: Output rectifier in synchronous buck converter topology. Use Value: 0.75V VF minimizes conduction loss, directly improving converter efficiency and reducing thermal load on adjacent controllers. | Use Scenario: Preventing damage when battery terminals are accidentally reversed during service or jump-start. IC Role / Device Role / Timing Role: Series-blocking Schottky diode in main power path. Use Value: Low 0.75V forward drop limits voltage loss across protection element, preserving system operating margin down to 9V cold-crank conditions. |
| Car Lighting Systems | Freewheeling Diodes in Motor Drivers |
Use Scenario: LED headlamp drivers requiring efficient, compact, and thermally stable output rectification. IC Role / Device Role / Timing Role: Secondary-side rectifier in isolated flyback or buck-boost LED driver. Use Value: AEC-Q101 qualification and 150°C TJ max ensure reliability under hood temperatures exceeding 105°C ambient. | Use Scenario: Clamping inductive kickback from brushed DC motors in seat/mirror/window actuators. IC Role / Device Role / Timing Role: Freewheeling path for motor coil current decay. Use Value: 120A IFSM withstands repeated motor stall surges; fast recovery avoids cross-conduction in H-bridge gate drive timing. |
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 IF, VF = 0.45V @ 5A - lower voltage rating, lower VF | Not suitable for 50V-rated circuits; better for ≤24V systems with ultra-low VF priority | Select only if system VR never exceeds 30V and lowest possible conduction loss is required. |
| ON Semiconductor SB550 | 50V VRRM, 5A IF, VF = 0.72V @ 5A, non-AEC-Q101 | Lacks automotive qualification; acceptable for industrial/commercial DC/DC but not under-hood automotive | Choose for cost-sensitive non-automotive designs where AEC-Q101 is not mandated. |
Compared with VS-50SQ030 and SB550, SK55CHM6G uniquely combines 50V rating, AEC-Q101 qualification, and 0.75V VF-making it the only option among the three validated for automotive 12V/24V systems requiring both reliability and efficiency.
Availability
SK55CHM6G 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 extended temperature ranges and long product lifecycles.
Supply support for SK55CHM6G 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 semiconductor manufacturer specializing in discrete power devices, including rectifiers, MOSFETs, and TVS diodes, with global distribution and automotive qualification capabilities.
The SK52CH–SK520CH family was designed specifically for high-reliability automotive power conversion, emphasizing AEC-Q101 compliance, low VF, and robust surge handling in surface-mount packaging.
FAQ
What is the peak repetitive reverse voltage rating for SK55CHM6G?
The SK55CHM6G has a peak repetitive reverse voltage (VRRM) rating of 50 V. This value defines the maximum reverse-biased voltage the diode can block continuously without breakdown. It is verified per the Taiwan Semiconductor SK52CH–SK520CH datasheet Version C2311, Table "ABSOLUTE MAXIMUM RATINGS", and applies strictly to the SK55CHM6G variant within the family.
Is SK55CHM6G qualified for automotive applications?
Yes, SK55CHM6G is AEC-Q101 qualified. This qualification includes stress tests such as high-temperature reverse bias (HTRB), temperature cycling, and mechanical shock, confirming suitability for automotive under-hood and cabin applications. The qualification status is explicitly stated in the "FEATURES" section of the official Taiwan Semiconductor datasheet for SK55CHM6G.
What is the forward voltage drop of SK55CHM6G at 5A and 25°C?
The forward voltage (VF) of SK55CHM6G is 0.75 V at 5 A and 25°C junction temperature, as specified in the "ELECTRICAL SPECIFICATIONS" table under "Forward voltage(1)" for SK55CH/SK56CH variants. This value is measured using a 0.3 ms pulse width test condition and reflects typical conduction loss in real-world power stage operation.
Does SK55CHM6G have moisture sensitivity level (MSL) rating?
Yes, SK55CHM6G has a moisture sensitivity level (MSL) of Level 1 per J-STD-020. This means the device may be stored indefinitely at ≤30°C/85% RH and requires no baking prior to surface-mount reflow. The MSL rating is confirmed in the "FEATURES" section of the Taiwan Semiconductor SK52CH–SK520CH datasheet.
What package type does SK55CHM6G use?
SK55CHM6G uses the DO-214AB (SMC) surface-mount package. Dimensions, pad layout recommendations, and mechanical tolerances are fully documented in the "PACKAGE OUTLINE DIMENSIONS" section of the datasheet (Version C2311), including lead-to-lead width of 7.75 mm and body height of 2.45 mm.
SK55CHM6G 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):
- 50 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 750 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 50 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
SK55CHM6G FAQ
1.How can I place an order for SK55CHM6G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK55CHM6G 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 SK55CHM6G reliable?
The price and inventory of SK55CHM6G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK55CHM6G is usually 5 days.
3.What payment methods are accepted for SK55CHM6G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK55CHM6G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK55CHM6G?
SK55CHM6G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK55CHM6G 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 SK55CHM6G?
For technical support, including SK55CHM6G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK55CHM6G requirements.
6.How does Aetrix verify that SK55CHM6G is sourced from the original manufacturer or authorized distributors?
All SK55CHM6G 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 SK55CHM6G meets industry standards.
7.What is the process for return or replacement of SK55CHM6G?
All SK55CHM6G units undergo pre-shipment inspection (PSI). If there is an issue with SK55CHM6G, 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 SK55CHM6G part is unused and in its original packaging.
Return procedure for SK55CHM6G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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