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Taiwan Semiconductor Corporation SK29AHM2G
- Part No.:
- SK29AHM2G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SK29AHM2G.pdf
- Description:
- DIODE SCHOTTKY 90V 2A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:3,936
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Product details
Overview
SK29AHM2G from Taiwan Semiconductor is a 2A, 90V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, qualified to AEC-Q101, with 0.85V forward voltage at 2A/25°C, 50A surge capability, and 0.1mA reverse leakage at rated VR and 25°C. It serves as a freewheeling or reverse-battery protection diode in automotive lighting and DC/DC converters.
For engineers reviewing the SK29AHM2G datasheet, SK29AHM2G pinout, SK29AHM2G application, or SK29AHM2G equivalent, key selection criteria include its 90V VRRM, low VF for high-efficiency power conversion, AEC-Q101 qualification for automotive use, and DO-214AC thermal performance (RθJA = 88°C/W).
Technical Context
The SK29AHM2G implements a single-die Schottky junction optimized for low forward voltage and fast switching in medium-voltage DC/DC topologies. Its guard ring structure provides over-voltage protection, and its JESD201 Class 2 whisker resistance supports reliable solder joint integrity in automotive reflow profiles.
Rated for continuous operation up to 150°C junction temperature and moisture sensitivity level 1 (per J-STD-020), the device delivers stable reverse leakage (<2mA at 125°C) and withstands 10,000 V/µs dV/dt - enabling robust performance in noisy automotive electrical environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - maximum repetitive reverse blocking voltage; defines safe operating range in 12V/24V automotive systems with load dump transients. |
| IF | 2 A - average forward current rating; supports continuous conduction in compact DC/DC converter outputs. |
| VF | 0.85 V @ 2A, 25°C - low conduction loss enables >92% efficiency in 5–12V buck stages. |
| IFSM | 50 A - non-repetitive surge current (8.3ms half-sine); handles inrush and fault currents without failure. |
| RθJA | 88 °C/W - junction-to-ambient thermal resistance; determines heatsinking requirements on standard FR-4 PCBs. |
| IR | 0.1 mA @ 90V, 25°C - ultra-low reverse leakage preserves battery life in always-on automotive modules. |
| TJ max | 150 °C - extended junction temperature rating enables under-hood deployment without derating. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount plastic case with cathode band marking; dimensions per JEDEC DO-214AC, Issue D; matte tin-plated leads, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., switch-node in buck converter or battery negative in reverse protection). |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; ties to higher-potential rail (e.g., output rail or battery positive); blocks reverse current above 90V. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing - required for front-end and lighting modules. |
| Guard ring structure | Enhances edge termination robustness against transient over-voltage events like ISO 7637-2 pulse 5a (load dump). |
| Moisture sensitivity level 1 | Enables unlimited floor life and standard reflow without baking - reduces manufacturing overhead in SMT lines. |
| Halogen-free & RoHS compliant | Meets EU Directive 2011/65/EU and IEC 61249-2-21; supports green compliance for global OEM supply chains. |
Applications
| Automotive LED Headlamp Driver | 12V-to-5V Buck Converter |
|---|---|
Use Scenario: High-brightness LED array powered from vehicle battery with PWM dimming and thermal foldback. IC Role / Device Role: Freewheeling diode in synchronous or asynchronous buck topology. Use Value: 0.85V VF minimizes conduction loss during off-time, improving thermal margin and enabling smaller heatsinks. | Use Scenario: Powering infotainment USB ports and microcontrollers from main 12V rail. IC Role / Device Role: Output rectifier in non-synchronous buck regulator. Use Value: 50A IFSM safely absorbs inrush during cold start; 150°C TJ max ensures stability across engine bay temperature swings. |
| Reverse Battery Protection | Start-Stop System Auxiliary Rail |
Use Scenario: Preventing damage when battery terminals are accidentally reversed during service. IC Role / Device Role: Series-blocking diode in main power path. Use Value: 90V VRRM withstands 12V system transients while 0.1mA IR at 25°C avoids parasitic drain on parked vehicle battery. | Use Scenario: Providing stable 3.3V/5V rails during engine cranking when battery dips to 6V. IC Role / Device Role: Freewheeling element in boost-derived auxiliary supply. Use Value: Fast recovery and low VF maintain regulation during deep voltage sags; AEC-Q101 ensures lifetime reliability over 100k start-stop cycles. |
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-2EY90-M3/57T | Same DO-214AC package, 2A/90V rating, but VF = 0.87V @ 2A and IR = 0.2mA @ 90V/25°C. | Marginally higher conduction loss and leakage; suitable where minor efficiency trade-off is acceptable. | Select when dual-sourcing is required and Vishay's qualification documentation aligns with program requirements. |
| ON Semiconductor SB290 | DO-214AA (SMB) package, 2A/90V, VF = 0.82V @ 2A, but not AEC-Q101 qualified and RθJA = 100°C/W. | Larger footprint and no automotive qualification; limited to industrial or consumer-grade designs. | Choose only for cost-sensitive non-automotive applications where thermal margin allows SMB layout. |
Compared with VS-2EY90-M3/57T and SB290, the SK29AHM2G offers the lowest combination of forward voltage and reverse leakage among AEC-Q101-qualified 90V Schottky rectifiers in DO-214AC, making it optimal for thermally constrained automotive modules requiring long-term reliability.
Availability
SK29AHM2G is available at Aetrix Electronics and suitable for automotive LED lighting, 12V DC/DC converters, and reverse battery protection circuits requiring stable component supply, full traceability, and long-lifecycle support.
Supply support for SK29AHM2G 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, with global distribution and AEC-Q101-compliant production lines.
The SK2x AH series targets automotive and industrial power conversion, designed specifically for high-reliability rectification in space-constrained, thermally demanding environments such as engine control units and exterior lighting modules.
FAQ
What is the peak repetitive reverse voltage rating for SK29AHM2G?
The SK29AHM2G has a peak repetitive reverse voltage (VRRM) rating of 90 V. This value is confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version C2307), and defines the maximum DC or sinusoidal AC reverse voltage the device can block continuously without breakdown. It is suitable for 12V automotive systems with transient overvoltages up to ±100V.
Is SK29AHM2G qualified for automotive applications?
Yes, SK29AHM2G is AEC-Q101 qualified, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock - confirming suitability for under-hood and interior automotive modules such as headlamp drivers and body control units.
What is the forward voltage drop of SK29AHM2G at rated current?
The forward voltage (VF) of SK29AHM2G is 0.85 V at 2 A forward current and 25°C junction temperature, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and reflects typical conduction loss in real-world switching applications like buck converters.
Does SK29AHM2G have a defined maximum junction temperature?
Yes, SK29AHM2G has a maximum junction temperature (TJ) of +150°C, as specified in the Absolute Maximum Ratings table. This rating applies across the full SK29AH–SK215AH family and enables operation in high-ambient environments such as engine compartments, provided thermal design respects the 88°C/W RθJA limit.
What package type does SK29AHM2G use, and is it lead-free?
SK29AHM2G uses the DO-214AC (SMA) surface-mount package with matte tin-plated leads, fully compliant with J-STD-002 solderability standards. It is RoHS compliant and halogen-free, meeting EU Directive 2011/65/EU and IEC 61249-2-21 - confirming lead-free construction and environmental compliance.
SK29AHM2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 90 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 850 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 90 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK29AHM2G FAQ
1.How can I place an order for SK29AHM2G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK29AHM2G 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 SK29AHM2G reliable?
The price and inventory of SK29AHM2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK29AHM2G is usually 5 days.
3.What payment methods are accepted for SK29AHM2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK29AHM2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK29AHM2G?
SK29AHM2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK29AHM2G 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 SK29AHM2G?
For technical support, including SK29AHM2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK29AHM2G requirements.
6.How does Aetrix verify that SK29AHM2G is sourced from the original manufacturer or authorized distributors?
All SK29AHM2G 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 SK29AHM2G meets industry standards.
7.What is the process for return or replacement of SK29AHM2G?
All SK29AHM2G units undergo pre-shipment inspection (PSI). If there is an issue with SK29AHM2G, 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 SK29AHM2G part is unused and in its original packaging.
Return procedure for SK29AHM2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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