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Taiwan Semiconductor Corporation SK23AH
- Part No.:
- SK23AH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SK23AH.pdf
- Description:
- DIODE SCHOTTKY 30V 2A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:14,990
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Product details
Overview
SK23AH from Taiwan Semiconductor is a 2 A, 30 V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, qualified to AEC-Q101, with 0.50 V forward voltage at 2 A and 25 °C, 50 A surge capability, and junction temperature rating up to +150 °C. It serves as a low-loss freewheeling or reverse-battery protection diode in automotive lighting and DC/DC converters.
For engineers reviewing the SK23AH datasheet, SK23AH pinout, SK23AH application, or SK23AH equivalent, key selection criteria include its 30 V repetitive peak reverse voltage, 0.50 V forward drop at rated current, AEC-Q101 qualification, moisture sensitivity level 1, and DO-214AC mechanical compatibility with automated SMT placement.
Technical Context
The SK23AH employs a single-die Schottky structure optimized for low forward voltage and high switching speed, enabling efficient operation in high-frequency DC/DC topologies. Its guard ring design enhances over-voltage ruggedness, while the matte tin-plated leads ensure reliable solderability per J-STD-002.
Thermal performance is defined by a junction-to-ambient thermal resistance of 88 °C/W under standard PCB mounting conditions. The device operates across –55 °C to +150 °C junction temperature range and supports non-repetitive surge currents up to 50 A (8.3 ms half-sine).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 30 V - Maximum repetitive reverse blocking voltage; sets upper limit for DC bus or input rail voltage in protection circuits |
| IF | 2 A - Continuous forward current rating; defines steady-state power handling in freewheeling or OR-ing paths |
| VF | 0.50 V @ 2 A, 25 °C - Low conduction loss directly reduces heat generation and improves system efficiency |
| IFSM | 50 A - Peak surge current capacity; enables robustness against inductive kickback or load dump transients |
| TJ max | +150 °C - Extended junction temperature rating supports under-hood automotive environments |
| RθJA | 88 °C/W - Thermal resistance value used to calculate junction temperature rise on standard FR-4 PCB |
| MSL | Level 1 - No floor life limitation; allows indefinite storage and immediate reflow without baking |
Pinout & Package
Package: DO-214AC (SMA), surface-mount plastic case with cathode band marking; dimensions per JEDEC DO-214AC, weight ≈ 0.070 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal | Connected to lower-potential node (e.g., ground or switch node) in freewheeling path |
| Cathode | Current exit terminal | Marked by band; connects to higher-potential rail (e.g., battery positive or output capacitor) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated reliability for automotive applications including engine control, lighting, and body electronics |
| Guard ring structure | Improves voltage standoff margin and prevents premature edge breakdown under transient overvoltage |
| Low VF (0.50 V) | Reduces conduction loss by >30% vs. comparable 30 V silicon rectifiers, lowering thermal stress |
| Moisture sensitivity level 1 | Eliminates pre-reflow baking requirements, streamlining high-volume SMT assembly |
| Halogen-free & RoHS compliant | Meets global environmental compliance mandates for automotive and industrial end equipment |
Applications
| Automotive LED Lighting | DC/DC Converter Freewheeling |
|---|---|
Use Scenario: Reverse polarity protection and EMI suppression in 12 V LED headlamp modules. IC Role / Device Role / Timing Role: Discrete Schottky rectifier providing unidirectional current path and fast recovery during PWM dimming transitions. Use Value: 0.50 V forward drop minimizes power loss in compact lamp housings; AEC-Q101 ensures lifetime reliability under thermal cycling. | Use Scenario: Output rectification in synchronous buck converter for ADAS camera power supply. IC Role / Device Role / Timing Role: Freewheeling diode conducting during low-side FET off-time to maintain continuous inductor current. Use Value: High dV/dt rating (10,000 V/µs) prevents false turn-on during fast switching; 50 A IFSM handles startup surges. |
| Reverse Battery Protection | Industrial 24 V Power Input Stage |
Use Scenario: Preventing damage from accidental battery reversal in vehicle infotainment head units. IC Role / Device Role / Timing Role: Series-connected anode-to-input, cathode-to-system, blocking reverse current flow. Use Value: 30 V VRRM provides sufficient margin above nominal 12 V systems; low VF avoids excessive voltage drop during normal operation. | Use Scenario: Input protection and hold-up rectification in DIN-rail mounted PLC power supplies. IC Role / Device Role / Timing Role: Clamping and rectifying transient energy during hot-swap or brownout events. Use Value: +150 °C TJ max enables stable operation in enclosed enclosures; DO-214AC footprint supports automated rework and inspection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS23H (ON Semiconductor) | Same 30 V VRRM, 2 A IF, but VF = 0.52 V @ 2 A; MSL Level 1, DO-214AC | Identical AEC-Q101 qualification and automotive use cases; slightly higher forward drop increases conduction loss by ~4% | Preferred where ON Semi's supply chain or second-source validation is required |
| SB230 (Vishay) | 30 V VRRM, 2 A IF, VF = 0.55 V @ 2 A; no AEC-Q101 listing; same DO-214AC package | Lacks automotive qualification; suitable for industrial/commercial designs where qualification is not mandated | Cost-sensitive alternative when AEC-Q101 is not required and thermal margin permits 0.05 V higher VF |
Compared with SS23H and SB230, the SK23AH offers the lowest forward voltage (0.50 V) among these 30 V/2 A Schottky rectifiers and is the only one explicitly AEC-Q101 qualified, making it optimal for thermally constrained automotive front-end protection.
Availability
SK23AH is available at Aetrix Electronics and suitable for automotive LED lighting, DC/DC converter freewheeling, and reverse battery protection requiring stable component supply and long-term lifecycle support.
Supply support for SK23AH 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 automotive, industrial, and consumer markets since 1979.
The SK2xAH series was developed specifically for high-reliability automotive power management, emphasizing low-loss rectification, AEC-Q101 compliance, and robust surge immunity in compact surface-mount packages.
FAQ
What is the maximum junction temperature rating for SK23AH?
The SK23AH has a maximum junction temperature rating of +150 °C, verified per its absolute maximum ratings table. This allows operation in under-hood automotive environments where ambient temperatures exceed 105 °C. The SK23AH must be thermally designed using its RθJA of 88 °C/W to ensure TJ remains below +150 °C under worst-case power dissipation. Derating curves in the datasheet confirm full 2 A current capability up to +125 °C ambient.
Is SK23AH suitable for reverse battery protection in 12 V automotive systems?
Yes, SK23AH is well-suited for reverse battery protection in 12 V automotive systems. With a 30 V VRRM, it provides 150 % voltage margin above nominal 12 V and typical load dump peaks. Its 0.50 V forward voltage minimizes insertion loss, and AEC-Q101 qualification ensures reliability across automotive temperature and vibration profiles. The DO-214AC package supports high-density layout in tight ECU spaces.
Does SK23AH have a halogen-free and RoHS-compliant construction?
Yes, SK23AH is both halogen-free and RoHS compliant, as explicitly stated in the "Features" section of the official Taiwan Semiconductor datasheet. The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated per J-STD-002. These attributes satisfy environmental compliance requirements for automotive and industrial end equipment sold in EU, China, and other regulated markets.
What is the surge current rating of SK23AH and how is it tested?
The SK23AH has a non-repetitive peak forward surge current (IFSM) rating of 50 A, tested using an 8.3 ms single half-sine wave superimposed on rated DC load. This rating reflects capability to withstand inductive energy release during motor commutation or power-up transients. The device's 20 mJ avalanche energy rating (ERSM) further supports robustness against voltage spikes in unprotected input stages.
How does the forward voltage of SK23AH compare to other 30 V Schottky rectifiers?
SK23AH delivers a typical forward voltage of 0.50 V at 2 A and 25 °C - lower than SS23H (0.52 V) and SB230 (0.55 V) under identical test conditions. This 0.05 V advantage translates to ~50 mW lower conduction loss at 2 A, reducing thermal load in space-constrained applications. The lower VF is achieved via optimized Schottky metallization and die processing specific to the SK2xAH family.
SK23AH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 30 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 30 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
SK23AH FAQ
1.How can I place an order for SK23AH through Aetrix?
Please submit a Request for Quotation (RFQ) for SK23AH 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 SK23AH reliable?
The price and inventory of SK23AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK23AH is usually 5 days.
3.What payment methods are accepted for SK23AH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK23AH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK23AH?
SK23AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK23AH 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 SK23AH?
For technical support, including SK23AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK23AH requirements.
6.How does Aetrix verify that SK23AH is sourced from the original manufacturer or authorized distributors?
All SK23AH 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 SK23AH meets industry standards.
7.What is the process for return or replacement of SK23AH?
All SK23AH units undergo pre-shipment inspection (PSI). If there is an issue with SK23AH, 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 SK23AH part is unused and in its original packaging.
Return procedure for SK23AH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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