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Taiwan Semiconductor Corporation SK26AHR3G
- Part No.:
- SK26AHR3G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SK26AHR3G.pdf
- Description:
- DIODE SCHOTTKY 60V 2A DO214AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,300
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Product details
Overview
SK26AHR3G from Taiwan Semiconductor is a 2 A, 60 V Schottky barrier rectifier in DO-214AC (SMA) package, qualified to AEC-Q101, with VF = 0.70 V at 2 A and TJ = 25°C, IR ≤ 0.5 mA at VR = 60 V and TJ = 25°C, and IFSM = 50 A. It serves as a freewheeling or reverse-battery protection diode in automotive lighting and DC/DC converters.
For engineers reviewing the SK26AHR3G datasheet, SK26AHR3G pinout, SK26AHR3G application, or SK26AHR3G equivalent, key selection criteria include its 60 V VRRM rating, low 0.70 V forward voltage at rated current, AEC-Q101 qualification for automotive use, moisture sensitivity level 1 compliance, and DO-214AC surface-mount form factor.
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 junction temperature range spans –55°C to +150°C, supporting operation in under-hood automotive environments.
With RθJA = 88°C/W and ERSM = 20 mJ (L = 40 mH), it delivers high surge robustness and thermal performance suitable for transient-heavy power paths. The device exhibits dV/dt capability of 10,000 V/µs, enabling reliable switching in high-frequency DC/DC topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 60 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in reverse-biased applications like reverse battery protection. |
| IF | 2 A - Continuous forward current rating; supports sustained conduction in 12 V/24 V automotive power rails. |
| VF @ 2 A, 25°C | 0.70 V - Low forward drop reduces conduction loss and improves efficiency in high-current, low-voltage DC/DC stages. |
| IR @ 60 V, 25°C | ≤ 0.5 mA - Low leakage ensures minimal standby power loss in always-on vehicle systems. |
| IFSM | 50 A - Peak non-repetitive surge current handling; withstands load dump transients without failure. |
| TJ Range | –55°C to +150°C - Extended junction temperature range enables deployment in engine compartment and LED headlamp modules. |
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 resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side (e.g., ground or return path) in freewheeling configuration; accepts up to 2 A continuous current. |
| Cathode | Forward current exit / reverse-blocking terminal | Marked by band; connects to higher-potential rail (e.g., battery input); blocks up to 60 V reverse voltage with <0.5 mA leakage at 25°C. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables use in safety-critical lighting and body control modules. |
| Guard ring structure | Enhances ruggedness against voltage transients and edge breakdown, improving long-term stability in noisy 12 V/24 V systems. |
| Moisture sensitivity level 1 | Eliminates bake requirements before reflow; compatible with standard SMT assembly lines without special handling. |
| Halogen-free & RoHS compliant | Meets global environmental regulations and supports lead-free reflow profiles up to 260°C peak. |
Applications
| Automotive LED Headlamps | 12 V DC/DC Buck Converters |
|---|---|
Use Scenario: Reverse polarity protection for LED driver ICs powered from vehicle battery. IC Role / Device Role / Timing Role: Unidirectional current gate preventing damage during battery misconnection. Use Value: Withstands 50 A surge and operates reliably at 150°C ambient, ensuring fail-safe protection without fuse dependency. | Use Scenario: Output freewheeling diode in synchronous or non-synchronous buck regulators supplying infotainment SoCs. IC Role / Device Role / Timing Role: Provides low-loss current path during high-side switch off-time. Use Value: 0.70 V VF minimizes conduction loss at 2 A, directly improving converter efficiency and reducing thermal load on PCB. |
| Reverse Battery Protection Circuits | Automotive Interior Lighting Modules |
Use Scenario: Series-connected protection at main power input of body control units (BCUs). IC Role / Device Role / Timing Role: Blocking reverse current flow while maintaining low forward impedance during normal operation. Use Value: ≤0.5 mA IR at 60 V ensures negligible quiescent drain on vehicle battery during sleep mode. | Use Scenario: Freewheeling path for PWM-driven LED strings in door handle illumination and ambient lighting. IC Role / Device Role / Timing Role: Clamping inductive kickback from LED driver MOSFETs during PWM turn-off. Use Value: 10,000 V/µs dV/dt rating prevents false triggering and ensures clean commutation at >1 kHz PWM frequencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS26HE3/5BT | VRRM = 60 V, VF = 0.75 V @ 2 A, TJ max = 150°C, same DO-214AC package | No AEC-Q101 qualification; intended for industrial/commercial use only | Select when automotive qualification is not required and cost optimization is prioritized. |
| SB260-TB | VRRM = 60 V, VF = 0.85 V @ 2 A, TJ max = 125°C, DO-214AC package | Limited to 125°C operation; lacks guard ring and AEC-Q101 validation | Acceptable for non-automotive 12 V systems where ambient temperature remains below 85°C. |
Compared with SS26HE3/5BT and SB260-TB, SK26AHR3G provides verified AEC-Q101 compliance, lower VF (0.70 V vs. ≥0.75 V), and extended 150°C operation-making it the preferred choice for thermally demanding automotive front-end power designs.
Availability
SK26AHR3G is available at Aetrix Electronics and suitable for automotive LED lighting, 12 V DC/DC conversion, and reverse battery protection requiring stable component supply across production lifecycles.
Supply support for SK26AHR3G 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 for automotive, industrial, and consumer markets.
The SK2xAH series was developed specifically for high-reliability automotive power management, emphasizing low VF, AEC-Q101 qualification, and robust surge tolerance in compact surface-mount packages.
FAQ
What is the maximum junction temperature rating for SK26AHR3G?
The SK26AHR3G has a maximum junction temperature (TJ) rating of +150°C, validated per AEC-Q101 stress testing. This allows continuous operation in under-hood environments where ambient temperatures exceed 105°C, provided thermal design maintains junction temperature within this limit. The SK26AHR3G's RθJA of 88°C/W must be considered alongside PCB copper area and airflow to ensure safe thermal margin.
Is SK26AHR3G suitable for reverse battery protection in 24 V commercial vehicles?
Yes, SK26AHR3G is suitable for reverse battery protection in 24 V systems because its 60 V VRRM rating provides ≥2× derating margin above nominal 24 V plus load dump transients. Its 50 A IFSM handles typical ISO 16750-2 pulse 4 surges, and AEC-Q101 qualification confirms robustness across temperature cycling and humidity exposure-key for commercial vehicle durability requirements.
Does SK26AHR3G have a halogen-free and RoHS-compliant construction?
Yes, SK26AHR3G is both halogen-free and RoHS compliant, as confirmed in the official Taiwan Semiconductor datasheet revision C2307. The molding compound meets UL 94V-0 flammability rating, and terminals are matte tin plated per J-STD-002, supporting lead-free reflow profiles up to 260°C without compromising solder joint integrity or environmental compliance.
What is the forward voltage specification of SK26AHR3G at 2 A and 125°C?
The forward voltage of SK26AHR3G at 2 A and 125°C is not explicitly specified in the datasheet; only the 25°C value (0.70 V max) and 100°C value (0.75 V typ) are provided. However, characteristic curves (Fig.10) show VF increases to ~0.82 V at 2 A and 125°C for SK26AH variants. Designers should apply derating or consult TSC's thermal models to confirm performance at elevated temperatures.
How does the guard ring feature improve reliability of SK26AHR3G in automotive applications?
The guard ring in SK26AHR3G mitigates edge breakdown under high dv/dt or localized overvoltage conditions-common during load dump or alternator ripple events. By redistributing electric field stress away from the die periphery, it enhances long-term reliability in harsh automotive electrical environments and contributes to the device's AEC-Q101 qualification for high-surge, high-temperature operation.
SK26AHR3G 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):
- 60 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 @ 60 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
SK26AHR3G FAQ
1.How can I place an order for SK26AHR3G through Aetrix?
Please submit a Request for Quotation (RFQ) for SK26AHR3G 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 SK26AHR3G reliable?
The price and inventory of SK26AHR3G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK26AHR3G is usually 5 days.
3.What payment methods are accepted for SK26AHR3G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK26AHR3G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SK26AHR3G?
SK26AHR3G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SK26AHR3G 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 SK26AHR3G?
For technical support, including SK26AHR3G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK26AHR3G requirements.
6.How does Aetrix verify that SK26AHR3G is sourced from the original manufacturer or authorized distributors?
All SK26AHR3G 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 SK26AHR3G meets industry standards.
7.What is the process for return or replacement of SK26AHR3G?
All SK26AHR3G units undergo pre-shipment inspection (PSI). If there is an issue with SK26AHR3G, 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 SK26AHR3G part is unused and in its original packaging.
Return procedure for SK26AHR3G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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