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Taiwan Semiconductor Corporation SK32AHM2G
- Part No.:
- SK32AHM2G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SK32AHM2G.pdf
- Description:
- DIODE SCHOTTKY 20V 3A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:9,016
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Product details
Overview
SK32AHM2G from Taiwan Semiconductor is a 3A, 20V AEC-Q101-qualified Schottky barrier rectifier in DO-214AC (SMA) package, featuring 0.55V max forward voltage at 3A/25°C, 70A non-repetitive surge current, and guard ring over-voltage protection - used as freewheeling diode in automotive DC/DC converters.
For engineers reviewing the SK32AHM2G datasheet, SK32AHM2G pinout, SK32AHM2G application, or SK32AHM2G equivalent, key selection criteria include low VF for efficiency-critical 12V automotive systems, TJ = –55°C to +150°C operation, moisture sensitivity level 1 compliance, and RoHS/halogen-free construction.
Technical Context
This single-die Schottky rectifier uses platinum-silicide barrier technology to achieve low forward voltage and fast switching with no reverse recovery charge. Its guard ring structure enhances ruggedness against transient overvoltage events common in automotive load-dump conditions.
Thermal performance is defined by RθJL = 25°C/W and RθJA = 66°C/W, enabling reliable 3A continuous conduction in compact surface-mount layouts without forced airflow - critical for space-constrained car lighting and infotainment power stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF (Continuous) | 3 A - supports sustained output current in 12V/24V automotive DC/DC stages without derating below 75°C ambient |
| VRRM | 20 V - rated for nominal 12V battery systems with margin for ISO 7637-2 pulse 5a (load dump up to 120V) |
| VF @ 3A, 25°C | ≤0.55 V - reduces conduction loss to <1.65W per device, improving thermal budget in sealed modules |
| IFSM (8.3ms) | 70 A - withstands high-current transients during motor startup or solenoid actuation |
| TJ Operating Range | –55°C to +150°C - qualified for under-hood placement in passenger and commercial vehicles |
| RθJL | 25 °C/W - enables direct PCB copper pour heat sinking to maintain junction temp <125°C at full load |
| MSL Level | Level 1 (per J-STD-020) - allows unlimited floor life and standard reflow without baking |
Pinout & Package
DO-214AC (SMA) surface-mount package with cathode indicated by molded band; matte tin-plated leads compliant with J-STD-002 solderability; weight ≈0.070g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Connected to switched input rail (e.g., battery+ or boost inductor node) |
| Cathode | Output current terminal | Connected to output capacitor or load; polarity marked by visible band on body |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements including HTGB, TC, HTRB, and UHAST |
| Guard ring structure | Prevents edge breakdown under repetitive 20V reverse bias, extending lifetime in noisy 12V systems |
| Low VF at high IF | 0.55V max at 3A ensures >92% efficiency in 5V-output buck converters at full load |
| Moisture sensitivity level 1 | Eliminates pre-bake requirement and supports automated SMT assembly without process interruption |
| Halogen-free & RoHS | Meets EU ELV and China RoHS for vehicle-level compliance in global OEM supply chains |
Applications
| Automotive DC/DC Converter | Reverse Battery Protection |
|---|---|
Use Scenario: Step-down conversion from 12V battery to 3.3V/5V for infotainment MCU and sensors. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous or asynchronous buck topology. Use Value: 0.55V VF minimizes power loss and thermal rise in confined dashboard enclosures. | Use Scenario: Preventing damage when jumper cables are incorrectly connected to vehicle battery terminals. IC Role / Device Role / Timing Role: Series blocking diode in main power input path. Use Value: 20V VRRM provides safety margin above 14V nominal charging voltage while maintaining low conduction loss. |
| Car Lighting Driver | Low-Voltage Inverter |
Use Scenario: LED headlamp driver with PWM dimming and thermal foldback control. IC Role / Device Role / Timing Role: Output rectifier in boost or buck-boost LED current regulator. Use Value: AEC-Q101 qualification ensures reliability across –40°C to +125°C ambient operating range. | Use Scenario: 12V-to-24V boost inverter for auxiliary cabin outlets or USB-C PD negotiation circuits. IC Role / Device Role / Timing Role: Output rectifier handling high-frequency switching ripple. Use Value: Fast recovery and zero Qrr eliminate switching losses and EMI in 200–500kHz topologies. |
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-3EWH02-M3/54 | Same DO-214AC package, 3A/20V, VF = 0.52V typ at 3A but not AEC-Q101 qualified | Limited to industrial or consumer-grade 12V supplies; unsuitable for OEM automotive BOMs requiring qualification evidence | Select only if AEC-Q101 is not mandated and lower VF is prioritized over qualification traceability |
| ON Semiconductor SB320-E3/54 | DO-214AC, 3A/20V, VF = 0.54V max, AEC-Q101 qualified, but IR = 1 mA max at 25°C (vs. 500 μA for SK32AHM2G) | Higher leakage may affect standby power in always-on vehicle modules like telematics | Prefer for cost-sensitive designs where leakage <500 μA is not required and second-source validation exists |
Compared with VS-3EWH02-M3/54 and SB320-E3/54, SK32AHM2G delivers tighter IR specification (≤500 μA), full AEC-Q101 documentation, and optimized thermal resistance (RθJL = 25°C/W), making it the preferred choice for safety-critical automotive power rails.
Availability
SK32AHM2G 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 SK32AHM2G 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, serving global automotive, industrial, and computing markets since 1979.
The SK32AHM2G belongs to TSC's AEC-Q101-qualified Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability 12V/24V automotive power conversion and protection functions.
FAQ
What is the maximum junction temperature rating for SK32AHM2G?
The SK32AHM2G has a maximum junction temperature (TJ) of +150°C and operates across –55°C to +150°C. This wide range supports under-hood deployment in passenger vehicles and commercial trucks where ambient temperatures exceed 105°C. The device maintains specified electrical parameters within this envelope, and its RθJL = 25°C/W enables effective heat transfer to PCB copper when mounted per recommended pad layout.
Is SK32AHM2G suitable for reverse battery protection in automotive applications?
Yes, SK32AHM2G is widely deployed for reverse battery protection due to its 20V VRRM, low 0.55V forward voltage, and AEC-Q101 qualification. It blocks reverse polarity while minimizing voltage drop and power loss in the main 12V supply path. Its guard ring structure also improves robustness against voltage transients that occur during jump-start scenarios, making SK32AHM2G appropriate for front-end protection in ECUs and body control modules.
Does SK32AHM2G have halogen-free and RoHS-compliant construction?
Yes, SK32AHM2G is both halogen-free and RoHS-compliant per manufacturer documentation. The molding compound meets UL 94V-0 flammability rating, and the matte tin-plated leads satisfy J-STD-002 solderability requirements. These attributes ensure compliance with EU ELV, China RoHS, and major OEM environmental directives - essential for inclusion in Tier 1 automotive BOMs and global vehicle platforms.
What is the moisture sensitivity level (MSL) of SK32AHM2G and how does it impact manufacturing?
SK32AHM2G is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and requires no baking prior to reflow soldering. This eliminates production delays, reduces handling risk, and simplifies SMT line integration - especially valuable for high-volume automotive electronics manufacturers running continuous lines with tight cycle time targets. The Level 1 rating is confirmed by TSC's qualification testing and documented in the official SK32AH–SK320AH datasheet revision B2304.
How does the guard ring feature improve reliability of SK32AHM2G in automotive environments?
The guard ring in SK32AHM2G mitigates edge breakdown under high electric field stress, particularly during load-dump transients (ISO 7637-2 Pulse 5a). By redistributing voltage across the die periphery, it prevents localized avalanche and premature failure - extending operational lifetime in 12V systems exposed to repeated surges. This structural enhancement is validated in AEC-Q101 stress tests and directly contributes to SK32AHM2G's suitability for engine control units and ADAS power supplies.
SK32AHM2G 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):
- 20 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 20 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
SK32AHM2G FAQ
1.How can I place an order for SK32AHM2G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK32AHM2G 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 SK32AHM2G reliable?
The price and inventory of SK32AHM2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK32AHM2G is usually 5 days.
3.What payment methods are accepted for SK32AHM2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK32AHM2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK32AHM2G?
SK32AHM2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK32AHM2G 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 SK32AHM2G?
For technical support, including SK32AHM2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK32AHM2G requirements.
6.How does Aetrix verify that SK32AHM2G is sourced from the original manufacturer or authorized distributors?
All SK32AHM2G 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 SK32AHM2G meets industry standards.
7.What is the process for return or replacement of SK32AHM2G?
All SK32AHM2G units undergo pre-shipment inspection (PSI). If there is an issue with SK32AHM2G, 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 SK32AHM2G part is unused and in its original packaging.
Return procedure for SK32AHM2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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