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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation SK26AH

Name: SK26AH
Brand: Taiwan Semiconductor Corporation
SKU: SK26AH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SK26AH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AC, SMA

Datasheet:: SK26AH.pdf

Description:: DIODE SCHOTTKY 60V 2A DO214AC

Quantity:: RFQ Add To RFQ list

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Inventory:14,469

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Product details

Overview

SK26AH from Taiwan Semiconductor is a 2 A, 60 V Schottky barrier surface-mount rectifier in DO-214AC (SMA) package, qualified to AEC-Q101, with 0.70 V forward voltage at 2 A and 25 °C, 50 A 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 SK26AH datasheet, SK26AH pinout, SK26AH application, or SK26AH equivalent, key selection criteria include its 60 V repetitive peak reverse voltage, low VF for high efficiency, AEC-Q101 qualification for automotive use, moisture sensitivity level 1 rating, and DO-214AC mechanical compatibility with automated SMT placement.

Technical Context

The SK26AH operates as a single-die, unidirectional Schottky rectifier optimized for low-loss, high-frequency switching. Its guard ring structure provides over-voltage protection, and it exhibits 10,000 V/µs critical dV/dt rating-enabling robust operation in fast-switching topologies.

Thermally, it features an 88 °C/W junction-to-ambient thermal resistance and supports continuous operation up to 125 °C junction temperature. Reverse leakage is limited to 0.5 mA at 25 °C and 60 V, and 5 mA at 100 °C under same voltage conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	60 V - Maximum repetitive reverse blocking voltage; defines safe operating range in reverse-biased applications like reverse battery protection.
I_F	2 A - Continuous forward current rating; determines steady-state power handling in DC/DC output stages.
V_F	0.70 V @ 2 A, 25 °C - Low conduction loss enables >92% efficiency in 5–12 V output converters.
I_FSM	50 A - Non-repetitive surge current capacity; withstands inrush and transient overloads without failure.
T_J max	125 °C - Maximum junction temperature; allows operation in under-hood automotive environments without derating below full current.
R_θJA	88 °C/W - Thermal resistance defining temperature rise per watt dissipated on standard FR-4 PCB with minimal copper.
I_R	0.5 mA @ 60 V, 25 °C - Low reverse leakage preserves battery life in always-on automotive systems.

Pinout & Package

Package: DO-214AC (SMA), surface-mount plastic case with cathode band marking; dimensions per JEDEC DO-214AC, moisture sensitivity level 1, matte tin-plated leads.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential node (e.g., ground or switch-node return); polarity must align with cathode band orientation.
Cathode	Forward current exit / reverse-blocking terminal	Marked by band; connects to higher-potential rail (e.g., battery positive or converter output); blocks reverse current above 60 V.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD testing-enables direct use in car lighting and body control modules.
Guard ring structure	Enhances ruggedness against transient over-voltage events (e.g., load dump), reducing field failure risk in 12 V systems.
Low V_F and high I_FSM	Enables compact thermal design: 0.70 V drop minimizes power loss while 50 A surge rating eliminates need for parallel devices in peak-current scenarios.
DO-214AC (SMA) package	Standardized footprint compatible with high-speed pick-and-place equipment; supports reflow soldering per J-STD-020 Level 1.

Applications

Automotive LED Lighting	12 V DC/DC Buck Converter Output
Use Scenario: Powering headlamp or DRL modules with PWM dimming and reverse-polarity connection risk. IC Role / Device Role / Timing Role: Freewheeling diode and reverse-battery protection element in synchronous and non-synchronous buck regulators. Use Value: 60 V V_RRM and AEC-Q101 qualification ensure compliance with ISO 16750-2; 0.70 V V_F reduces heat generation in sealed lamp housings.	Use Scenario: Secondary-side rectification in 12 V input, 3.3–5 V output automotive DC/DC converters. IC Role / Device Role / Timing Role: Unidirectional current path enabling energy transfer during low-side switch off-time. Use Value: 2 A continuous rating and 50 A surge capability support transient loads (e.g., CAN transceiver wake-up pulses) without derating.
Reverse Battery Protection	Industrial 24 V Power Supply Input Stage
Use Scenario: Preventing damage when vehicle battery terminals are accidentally reversed during service. IC Role / Device Role / Timing Role: Series-connected blocking diode placed between battery input and downstream regulator. Use Value: 60 V V_RRM exceeds 12 V system surge limits (e.g., ISO 7637-2 pulse 1: −100 V/50 ms); low V_F avoids excessive voltage drop in normal operation.	Use Scenario: Input rectification and polarity protection in DIN-rail mounted 24 V industrial PSUs. IC Role / Device Role / Timing Role: Clamp and freewheeling component in flyback or buck-derived front-end stages. Use Value: 125 °C T_J max and 88 °C/W R_θJA allow operation in enclosed enclosures up to 70 °C ambient without forced cooling.

Automotive LED Lighting

12 V DC/DC Buck Converter Output

Use Scenario: Powering headlamp or DRL modules with PWM dimming and reverse-polarity connection risk.

IC Role / Device Role / Timing Role: Freewheeling diode and reverse-battery protection element in synchronous and non-synchronous buck regulators.

Use Value: 60 V V_RRM and AEC-Q101 qualification ensure compliance with ISO 16750-2; 0.70 V V_F reduces heat generation in sealed lamp housings.

Use Scenario: Secondary-side rectification in 12 V input, 3.3–5 V output automotive DC/DC converters.

IC Role / Device Role / Timing Role: Unidirectional current path enabling energy transfer during low-side switch off-time.

Use Value: 2 A continuous rating and 50 A surge capability support transient loads (e.g., CAN transceiver wake-up pulses) without derating.

Reverse Battery Protection

Industrial 24 V Power Supply Input Stage

Use Scenario: Preventing damage when vehicle battery terminals are accidentally reversed during service.

IC Role / Device Role / Timing Role: Series-connected blocking diode placed between battery input and downstream regulator.

Use Value: 60 V V_RRM exceeds 12 V system surge limits (e.g., ISO 7637-2 pulse 1: −100 V/50 ms); low V_F avoids excessive voltage drop in normal operation.

Use Scenario: Input rectification and polarity protection in DIN-rail mounted 24 V industrial PSUs.

IC Role / Device Role / Timing Role: Clamp and freewheeling component in flyback or buck-derived front-end stages.

Use Value: 125 °C T_J max and 88 °C/W R_θJA allow operation in enclosed enclosures up to 70 °C ambient without forced cooling.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky rectifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SS26 (Diodes Inc.)	Same 2 A / 60 V rating, but V_F = 0.75 V @ 2 A; no AEC-Q101 qualification stated in datasheet.	Not validated for automotive under-hood use; suitable for industrial or consumer DC/DC where qualification is not required.	Select SS26 only if AEC-Q101 is not mandated and 0.05 V higher V_F is acceptable in thermal budget.
SB260 (ON Semiconductor)	V_RRM = 60 V, I_F = 2 A, V_F = 0.72 V @ 2 A; AEC-Q101 qualified; DO-214AC package.	Direct functional match with identical qualification and thermal specs; minor V_F variation within measurement tolerance.	SB260 is a functionally aligned alternative with equivalent automotive suitability and layout compatibility.

Compared with SK26AH, SS26 lacks automotive qualification and has marginally higher forward drop, while SB260 matches its AEC-Q101 status, electrical ratings, and package-making it the closest alternative for drop-in replacement in qualified designs.

Availability

SK26AH is available at Aetrix Electronics and suitable for automotive LED lighting, 12 V DC/DC converters, and reverse battery protection circuits requiring stable component supply and AEC-Q101-compliant sourcing.

Supply support for SK26AH 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, TVS diodes, and MOSFETs, with global distribution and automotive qualification capabilities.

The SK22AH–SK215AH family is designed specifically for high-efficiency, surface-mount rectification in automotive and industrial power supplies-emphasizing low V_F, surge robustness, and AEC-Q101 reliability.

FAQ

What is the maximum junction temperature rating for the SK26AH?

The SK26AH has a maximum junction temperature (T_J) of 125 °C, as specified in the Absolute Maximum Ratings table. This rating applies under continuous forward conduction at rated current and allows operation in automotive under-hood environments without mandatory derating below 2 A, provided board-level thermal design maintains junction temperature within limit. The SK26AH datasheet confirms this value across all test conditions and versions.

Is the SK26AH AEC-Q101 qualified?

Yes, the SK26AH is explicitly AEC-Q101 qualified, as stated in the FEATURES section of the official Taiwan Semiconductor datasheet (Version C2307). This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and ESD, making SK26AH suitable for automotive applications such as lighting and body electronics where reliability under harsh conditions is mandatory.

What is the forward voltage of the SK26AH at 2 A and 25 °C?

The forward voltage (V_F) of the SK26AH is 0.70 V at 2 A and 25 °C, per the ELECTRICAL SPECIFICATIONS table. This value is measured under pulsed conditions (PW = 0.3 ms) and reflects typical conduction loss in low-voltage DC/DC output stages. At elevated temperatures (e.g., 100 °C), V_F decreases slightly, improving efficiency in thermally stressed operation.

Which package does the SK26AH use, and is it compatible with standard SMT assembly?

The SK26AH uses the DO-214AC (SMA) package, with matte tin-plated leads compliant with J-STD-002 solderability requirements. It is rated moisture sensitivity level 1 per J-STD-020, meaning it can be stored indefinitely before reflow and requires no baking prior to assembly-fully supporting high-volume automated placement and lead-free reflow processes used in automotive electronics manufacturing.

What is the repetitive peak reverse voltage (V_RRM) of the SK26AH?

The repetitive peak reverse voltage (V_RRM) of the SK26AH is 60 V, as confirmed in the Absolute Maximum Ratings table under the SK26AH column. This defines the maximum reverse-bias voltage the device can block continuously without breakdown, making it appropriate for 12 V automotive systems where load dump transients reach up to 100 V-but requiring external clamping for those events, as V_RRM is not intended for transient suppression.

SK26AH 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):: 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

SK26AH FAQ

1.How can I place an order for SK26AH through Aetrix?

Please submit a Request for Quotation (RFQ) for SK26AH 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 SK26AH reliable?

The price and inventory of SK26AH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK26AH is usually 5 days.

3.What payment methods are accepted for SK26AH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK26AH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SK26AH?

SK26AH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SK26AH 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 SK26AH?

For technical support, including SK26AH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK26AH requirements.

6.How does Aetrix verify that SK26AH is sourced from the original manufacturer or authorized distributors?

All SK26AH 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 SK26AH meets industry standards.

7.What is the process for return or replacement of SK26AH?

All SK26AH units undergo pre-shipment inspection (PSI). If there is an issue with SK26AH, 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 SK26AH part is unused and in its original packaging.

Return procedure for SK26AH:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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