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Taiwan Semiconductor Corporation SK25AHM2G
- Part No.:
- SK25AHM2G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SK25AHM2G.pdf
- Description:
- DIODE SCHOTTKY 50V 2A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,087
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Product details
Overview
SK25AHM2G from Taiwan Semiconductor is a 2A, 50V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, qualified to AEC-Q101, with 0.70V forward voltage at 2A/25°C, 50A surge capability, and 125°C maximum junction temperature. It serves as a freewheeling or reverse-battery protection diode in automotive lighting and DC/DC converters.
For engineers reviewing the SK25AHM2G datasheet, SK25AHM2G pinout, SK25AHM2G application, or SK25AHM2G equivalent, key selection criteria include its 50V VRRM, low VF for thermal efficiency, AEC-Q101 qualification for automotive environments, and DO-214AC packaging for automated SMT assembly.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring over-voltage protection and matte tin-plated leads compliant with J-STD-002 solderability. Its 10,000 V/µs dV/dt rating supports fast-switching topologies.
Thermal performance is defined by an 88°C/W junction-to-ambient resistance, and it operates across –55°C to +125°C junction range. Moisture sensitivity level is J-STD-020 Level 1, eliminating bake requirements prior to reflow.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum repetitive reverse voltage before breakdown; sets safe operating limit in 24V automotive systems. |
| IF | 2 A - Continuous forward current rating; defines steady-state power handling in DC/DC output stages. |
| IFSM | 50 A - Non-repetitive surge current (8.3ms half-sine); enables robustness against load dump transients. |
| VF | 0.70 V @ 2A, 25°C - Low conduction loss improves system efficiency and reduces heatsink requirements. |
| IR | 0.5 mA @ 50V, 25°C - Low leakage preserves battery life in reverse-battery protection circuits. |
| TJ max | 125°C - Junction temperature limit compatible with under-hood automotive ambient conditions. |
| RθJA | 88°C/W - Thermal resistance determines required PCB copper area for passive cooling at full load. |
Pinout & Package
Package: DO-214AC (SMA), surface-mount plastic case with cathode band marking; weight ≈ 0.070 g; UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential node (e.g., ground or switch node) in freewheeling path. |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by band; connects to higher-potential rail (e.g., input supply or inductor output). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive applications including temperature cycling, HTRB, and ESD testing per stress test plan. |
| Guard ring structure | Enhances edge termination robustness, improving VRRM consistency and reducing risk of premature avalanche failure. |
| Low moisture sensitivity (J-STD-020 Level 1) | Enables direct placement without dry-pack or baking, reducing manufacturing cost and process complexity. |
| Halogen-free & RoHS-compliant | Meets global environmental regulations and supports lead-free reflow profiles up to 260°C peak. |
Applications
| Automotive LED Lighting | 12V/24V DC/DC Converters |
|---|---|
Use Scenario: Reverse polarity protection in headlamp or tail lamp modules powered from vehicle battery. IC Role / Device Role / Timing Role: Discrete Schottky diode providing unidirectional current path and blocking reverse battery connection. Use Value: Prevents damage to LED drivers during jump-start or incorrect battery hookup; 0.70V VF minimizes voltage drop and heat generation. | Use Scenario: Output rectification in synchronous or non-synchronous buck converters for infotainment or ADAS power rails. IC Role / Device Role / Timing Role: Freewheeling diode completing current path during high-side switch off-time. Use Value: Enables high-frequency operation with low conduction loss; 50A IFSM withstands transient inductor energy release. |
| Reverse Battery Protection | Industrial Power Supplies |
Use Scenario: Input protection circuitry for telematics control units or body control modules. IC Role / Device Role / Timing Role: Series-connected Schottky diode blocking reverse current flow into system when battery terminals are swapped. Use Value: 0.5 mA leakage at 50V ensures minimal standby drain; AEC-Q101 qualification guarantees long-term reliability in harsh environments. | Use Scenario: Secondary-side rectification in isolated flyback or forward converters for industrial HMIs or PLC I/O modules. IC Role / Device Role / Timing Role: High-efficiency rectifier replacing slower PN diodes to reduce switching losses and improve thermal margin. Use Value: 88°C/W RθJA allows operation at full 2A load on standard FR-4 with 1-in² copper pour, simplifying thermal design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SB250-E3/52 | Same DO-214AC package, 50V VRRM, but 0.85V VF @ 2A and 150°C TJ max. | Higher VF increases conduction loss; better suited for higher-temperature industrial use than automotive. | Select SB250-E3/52 only if extended junction temperature range is required and higher VF is acceptable. |
| SS25HE3/52 | DO-214AC, 50V, 2A, 0.72V VF @ 2A, but not AEC-Q101 qualified; 125°C TJ max. | Lacks automotive qualification; suitable for commercial-grade power supplies where AEC compliance is not mandated. | Choose SS25HE3/52 for cost-sensitive non-automotive designs where AEC-Q101 is unnecessary. |
Compared with SB250-E3/52 and SS25HE3/52, SK25AHM2G delivers lower forward voltage and certified automotive reliability-making it optimal for safety-critical vehicle subsystems where both efficiency and qualification are mandatory.
Availability
SK25AHM2G is available at Aetrix Electronics and suitable for automotive LED lighting, reverse battery protection, and 12V/24V DC/DC converter designs requiring stable component supply and long-term lifecycle support.
Supply support for SK25AHM2G 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, analog ICs, and optoelectronics, headquartered in Hsinchu, Taiwan.
The SK2xAH series targets automotive and industrial power conversion, designed specifically to deliver AEC-Q101–qualified Schottky rectifiers with optimized VF–VRRM trade-offs and robust surge handling for demanding SMT applications.
FAQ
What is the maximum junction temperature rating for SK25AHM2G?
The SK25AHM2G has a maximum junction temperature (TJ) of +125°C, verified per AEC-Q101 stress testing. This rating applies under continuous DC forward current conditions and is supported by its 88°C/W junction-to-ambient thermal resistance. Operation beyond this limit risks parametric shift or permanent degradation. The SK25AHM2G must be mounted on PCB copper sufficient to maintain TJ ≤ 125°C at full 2A load.
Is SK25AHM2G pin-compatible with other DO-214AC Schottky diodes?
Yes, SK25AHM2G uses the standard DO-214AC (SMA) package with anode and cathode terminals arranged per JEDEC outline. Its physical footprint and solder pad layout match all industry-standard DO-214AC rectifiers, including SB250-E3/52 and SS25HE3/52. However, electrical characteristics-including VF, IR, and qualification status-differ, so functional substitution requires validation.
Does SK25AHM2G meet automotive reliability standards?
Yes, SK25AHM2G is fully qualified to AEC-Q101 for stress tests including HTGB, HTRB, TC, and ESD. It also meets J-STD-020 Level 1 moisture sensitivity and RoHS/halogen-free requirements. These qualifications confirm suitability for automotive powertrain, body, and lighting applications where long-term reliability under thermal and mechanical stress is critical.
What is the forward voltage of SK25AHM2G at 2A and 100°C junction temperature?
The datasheet specifies forward voltage only at 25°C (0.70V max) and does not provide a typ/max curve for VF at 100°C. However, typical Schottky behavior shows VF decreases ~2 mV/°C; thus, at 100°C, VF is estimated near 0.56V at 2A. For design-critical applications, engineers should consult TSC's Fig.10 (Typical Forward Characteristics) or perform bench validation using the SK25AHM2G under actual thermal conditions.
How is polarity indicated on the SK25AHM2G package?
Polarity is indicated by a molded cathode band on the DO-214AC (SMA) body-consistent with JEDEC standard marking. The banded end is the cathode terminal, and the opposite end is the anode. This marking aligns with the device's schematic symbol orientation and must be matched to PCB silkscreen and footprint polarity during layout to ensure correct installation and circuit functionality.
SK25AHM2G 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):
- 50 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 2 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-214AC (SMA)
- Operating Temperature - Junction:
- -55°C ~ 150°C
SK25AHM2G FAQ
1.How can I place an order for SK25AHM2G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK25AHM2G 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 SK25AHM2G reliable?
The price and inventory of SK25AHM2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK25AHM2G is usually 5 days.
3.What payment methods are accepted for SK25AHM2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK25AHM2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK25AHM2G?
SK25AHM2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK25AHM2G 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 SK25AHM2G?
For technical support, including SK25AHM2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK25AHM2G requirements.
6.How does Aetrix verify that SK25AHM2G is sourced from the original manufacturer or authorized distributors?
All SK25AHM2G 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 SK25AHM2G meets industry standards.
7.What is the process for return or replacement of SK25AHM2G?
All SK25AHM2G units undergo pre-shipment inspection (PSI). If there is an issue with SK25AHM2G, 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 SK25AHM2G part is unused and in its original packaging.
Return procedure for SK25AHM2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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