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Taiwan Semiconductor Corporation SK29AHR3G
- Part No.:
- SK29AHR3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SK29AHR3G.pdf
- Description:
- DIODE SCHOTTKY 90V 2A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,546
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Product details
Overview
SK29AHR3G from Taiwan Semiconductor is a 2 A, 90 V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, qualified to AEC-Q101, with 0.85 V forward voltage at 2 A and 0.1 mA reverse leakage at 25°C, used for freewheeling and reverse battery protection in automotive lighting systems.
For engineers reviewing the SK29AHR3G datasheet, SK29AHR3G pinout, SK29AHR3G application, or SK29AHR3G equivalent, key selection criteria include peak reverse voltage (90 V), surge current capability (50 A), thermal resistance (88 °C/W), junction temperature rating (–55 to +150 °C), and RoHS/halogen-free compliance for automotive-grade reliability.
Technical Context
This Schottky rectifier uses a single-die construction with guard ring over-voltage protection and matte tin-plated leads solderable per J-STD-002. Its low VF and high dV/dt (10,000 V/µs) support high-frequency switching in DC/DC converters.
Rated for TJ = –55 to +150 °C and moisture sensitivity level 1 (J-STD-020), it delivers stable performance under automotive thermal cycling while maintaining <0.1 mA IR at rated VR and 25°C - critical for low-power-loss reverse-battery protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 90 V - maximum repetitive reverse voltage; defines safe blocking capability in 12 V/24 V automotive systems with load dump transients |
| IF | 2 A - continuous forward current; supports medium-power DC/DC stages without forced cooling |
| VF @ 2 A | 0.85 V - forward voltage drop at rated current; enables >85% efficiency in 5–12 V output converters |
| IR @ 25°C | 0.1 mA - reverse leakage at rated VR; ensures minimal standby power loss in always-on vehicle modules |
| IFSM | 50 A - non-repetitive surge current (8.3 ms); withstands motor startup and inductive kickback events |
| RθJA | 88 °C/W - junction-to-ambient thermal resistance; allows ~1.1 W dissipation at 70°C ambient with standard PCB layout |
| TJ Range | –55 to +150 °C - extended junction temperature range; certified for under-hood automotive placement |
Pinout & Package
Package: DO-214AC (SMA), surface-mount plastic case with cathode band polarity indicator, 0.070 g weight, UL 94V-0 molding compound, and JESD 201 Class 2 whisker-resistant matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current input | Connected to source-side of switching node; requires low-inductance trace routing for high di/dt stability |
| Cathode | Forward current output / reverse voltage reference | Marked by band; ties to ground or return path; must maintain clean low-impedance plane for EMI control |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive electronics per stress test requirements - enables use in ASIL-B–compatible systems without additional qualification |
| Guard ring structure | Enhances edge termination robustness against transient overvoltage - improves reliability in load-dump-prone 12 V networks |
| Moisture sensitivity level 1 | No floor life limitation or bake requirement before reflow - simplifies SMT line integration and reduces handling overhead |
| Halogen-free & RoHS | Complies with EU ELV and automotive OEM material declarations - supports global vehicle homologation |
| High dV/dt rating | 10,000 V/µs - suppresses false turn-on during fast-switching transitions in synchronous rectifier topologies |
Applications
| Automotive LED Lighting | DC/DC Converter Freewheeling |
|---|---|
Use Scenario: Reverse-polarity protection and flyback energy recirculation in headlamp driver modules. IC Role / Device Role / Timing Role: Schottky rectifier providing low-loss freewheeling path and reverse-battery blocking function. Use Value: 0.85 V VF minimizes conduction loss at 2 A drive current; AEC-Q101 rating ensures operation across –40 to +125°C ambient. | Use Scenario: Output rectification in 5 V/3 A buck converter powering infotainment subsystems. IC Role / Device Role / Timing Role: High-frequency unidirectional current path enabling >90% efficiency at 500 kHz switching. Use Value: 50 A IFSM handles startup surges; 88 °C/W RθJA permits natural convection cooling on 2-layer PCB. |
| Reverse Battery Protection | Engine Control Unit Power Input |
Use Scenario: Preventing damage during jump-start misconnection in body control modules. IC Role / Device Role / Timing Role: Series-connected blocking diode in main 12 V supply rail. Use Value: 0.1 mA IR at 25°C limits quiescent current draw; 90 V VRRM exceeds ISO 7637-2 pulse 5a (110 V) margin. | Use Scenario: Input-stage rectification and transient clamping in ECU power management IC front-end. IC Role / Device Role / Timing Role: Primary rectifier handling cold-crank (–40°C) to hot-idle (+150°C) thermal extremes. Use Value: –55 to +150 °C TJ range and JESD 201 Class 2 plating ensure long-term solder joint integrity under vibration and thermal cycling. |
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-M3/5BT | Same DO-214AC package, 2 A/90 V, VF = 0.87 V @ 2 A, IR = 0.15 mA @ 25°C | Slightly higher VF and IR; identical surge rating and thermal resistance | Acceptable where 0.02 V VF increase is tolerable; same footprint and reflow profile |
| ON Semiconductor SB290 | DO-214AA (SMB) package, 2 A/90 V, VF = 0.88 V @ 2 A, IR = 0.1 mA @ 25°C, RθJA = 70 °C/W | Smaller thermal resistance but larger footprint; not AEC-Q101 qualified | Preferred for non-automotive industrial use requiring lower junction temperature rise |
Compared with VS-2EY90-M3/5BT and SB290, SK29AHR3G offers tighter IR spec (0.1 mA vs. 0.15 mA), AEC-Q101 certification, and optimized thermal performance for space-constrained automotive PCBs - making it the preferred choice for safety-critical lighting and ECU power rails.
Availability
SK29AHR3G is available at Aetrix Electronics and suitable for automotive LED lighting, reverse battery protection, and DC/DC converter freewheeling applications requiring stable component supply and full AEC-Q101 compliance.
Supply support for SK29AHR3G 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 AEC-Q101–qualified product lines.
The SK2xAH family targets automotive and industrial power conversion, designed specifically for high-reliability, high-efficiency rectification in harsh-environment applications where low VF, high surge tolerance, and extended temperature operation are mandatory.
FAQ
What is the peak repetitive reverse voltage rating for SK29AHR3G?
The SK29AHR3G has a peak repetitive reverse voltage (VRRM) rating of 90 V. This value is specified in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version C2307) and defines the maximum DC or sinusoidal AC voltage the device can block continuously without breakdown. It is validated across the full operating temperature range and supports design margins for ISO 7637-2 load-dump transients in 12 V automotive systems.
Is SK29AHR3G qualified for automotive applications?
Yes, SK29AHR3G is AEC-Q101 qualified, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. This qualification covers stress tests including HTGB, HTRB, TST, and mechanical shock, confirming suitability for automotive electronic modules. The device's –55 to +150 °C junction temperature range, moisture sensitivity level 1, and halogen-free construction further align with automotive OEM requirements.
What is the forward voltage drop of SK29AHR3G at 2 A and 25°C?
The forward voltage drop (VF) of SK29AHR3G is 0.85 V at IF = 2 A and TJ = 25°C, per the Electrical Specifications table in the datasheet. This value is measured under pulsed conditions (PW = 0.3 ms) and reflects typical conduction loss in DC/DC output stages. At elevated temperatures (e.g., 125°C), VF decreases slightly due to semiconductor physics, remaining below 0.82 V.
Does SK29AHR3G have a defined reverse leakage current specification?
Yes, SK29AHR3G specifies reverse leakage current (IR) as ≤0.1 mA at rated VR = 90 V and TJ = 25°C, and ≤2 mA at TJ = 125°C. These values are confirmed in the Electrical Specifications table and are critical for minimizing standby power loss in always-on vehicle subsystems such as body controllers and lighting modules.
What package type does SK29AHR3G use, and what are its key mechanical features?
SK29AHR3G uses the DO-214AC (SMA) surface-mount package. Key mechanical features include matte tin-plated leads compliant with J-STD-002, UL 94V-0 flammability-rated molding compound, cathode band polarity marking, and JESD 201 Class 2 whisker resistance. Its dimensions (4.60 × 2.83 × 2.30 mm) and suggested pad layout are detailed in the Package Outline Dimensions drawing (HQ2SD07-DO214SMC-034 REV A).
SK29AHR3G 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
SK29AHR3G FAQ
1.How can I place an order for SK29AHR3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK29AHR3G 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 SK29AHR3G reliable?
The price and inventory of SK29AHR3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK29AHR3G is usually 5 days.
3.What payment methods are accepted for SK29AHR3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK29AHR3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK29AHR3G?
SK29AHR3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK29AHR3G 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 SK29AHR3G?
For technical support, including SK29AHR3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK29AHR3G requirements.
6.How does Aetrix verify that SK29AHR3G is sourced from the original manufacturer or authorized distributors?
All SK29AHR3G 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 SK29AHR3G meets industry standards.
7.What is the process for return or replacement of SK29AHR3G?
All SK29AHR3G units undergo pre-shipment inspection (PSI). If there is an issue with SK29AHR3G, 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 SK29AHR3G part is unused and in its original packaging.
Return procedure for SK29AHR3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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