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

Taiwan Semiconductor Corporation SK84CH

Name: SK84CH
Brand: Taiwan Semiconductor Corporation
SKU: SK84CH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SK84CH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: SK84CH.pdf

Description:: DIODE SCHOTTKY 40V 8A DO214AB

Quantity:: RFQ Add To RFQ list

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Inventory:4,130

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Product details

Overview

SK84CH from Taiwan Semiconductor is a single-die, AEC-Q101-qualified Schottky barrier rectifier in DO-214AB (SMC) package, rated for 40 V repetitive peak reverse voltage (V_RRM), 8 A average forward current (I_F), and 150 A surge capability (I_FSM). It delivers low 0.55 V forward voltage at 8 A/25°C and supports automotive lighting, DC/DC converters, and reverse battery protection.

For engineers reviewing the SK84CH datasheet, SK84CH pinout, SK84CH application, or SK84CH equivalent, key selection factors include its 40 V V_RRM, 0.55 V V_F @ 8 A, 150 A I_FSM, AEC-Q101 qualification, and DO-214AB thermal performance (R_θJA = 20 °C/W).

Technical Context

The SK84CH employs a planar Schottky junction structure optimized for low conduction loss and fast switching in high-frequency power conversion. Its guard ring design enhances over-voltage robustness, and the matte tin-plated leads meet J-STD-002 solderability requirements.

Rated for operation from –55 °C to +150 °C junction temperature, it exhibits 15 mA reverse leakage (I_R) at 100 °C and 40 V, with dV/dt capability of 10,000 V/µs - enabling reliable use in noisy automotive environments and freewheeling applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	40 V - Maximum non-repetitive reverse blocking voltage; defines safe operating range in 12–24 V automotive systems.
I_F	8 A - Continuous average forward current at T_A = 75 °C; supports sustained power delivery in compact SMC packages.
V_F @ 8 A, 25 °C	0.55 V - Low conduction loss reduces heat generation and improves efficiency in DC/DC buck stages.
I_FSM	150 A - Peak non-repetitive surge current (8.3 ms half-sine); handles load dump transients in vehicle electrical systems.
T_J max	+150 °C - Extended junction temperature rating enables operation in under-hood environments without derating.
R_θJA	20 °C/W - Thermal resistance from junction to ambient; informs heatsink-free layout feasibility on FR-4 PCBs.
I_R @ 40 V, 100 °C	15 mA - Reverse leakage level at elevated temperature; impacts standby power in always-on modules.

Pinout & Package

DO-214AB (SMC) surface-mount package with cathode-indicated band; matte tin-plated leads, moisture sensitivity level 1 (J-STD-020), UL 94V-0 molding compound, and 0.210 g typical weight.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side (e.g., ground or switch node) in freewheeling or reverse protection configurations.
Cathode	Forward current exit / reverse blocking terminal	Marked by band; ties to higher-potential rail (e.g., battery+, input rail); blocks reverse current above 40 V.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test conditions.
Guard ring structure	Improves edge termination robustness against localized over-voltage events and surface contamination.
Low V_F (0.55 V)	Reduces conduction loss by ~30% vs. comparable 40 V Si diodes, lowering thermal load in space-constrained layouts.
High I_FSM (150 A)	Withstands automotive load dump surges without failure, eliminating need for parallel diode redundancy.
Halogen-free & RoHS	Complies with IEC 61249-2-21 and EU RoHS Directive; supports environmentally regulated OEM supply chains.

Applications

Automotive LED Lighting	12 V DC/DC Buck Converter Output
Use Scenario: High-brightness LED headlamp module powered from vehicle battery with PWM dimming and thermal foldback. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter output stage, conducting during low-side FET off-time. Use Value: 0.55 V V_F minimizes forward drop loss and self-heating, preserving lumen output stability across ambient temperatures up to 125 °C.	Use Scenario: 12 V input to 5 V/3 A step-down regulator supplying infotainment MCU and CAN transceiver. IC Role / Device Role / Timing Role: Output rectifier in non-synchronous buck topology, handling continuous 8 A peak inductor current. Use Value: 150 A I_FSM withstands cold-crank surges; DO-214AB footprint allows direct integration into existing 12 V power rail layouts.
Reverse Battery Protection	Start-Stop System Energy Recovery
Use Scenario: Protection circuit in body control module preventing damage during accidental reverse battery connection. IC Role / Device Role / Timing Role: Series-connected Schottky diode blocking reverse polarity current while passing normal forward current. Use Value: 40 V V_RRM exceeds 24 V system max; low V_F avoids excessive voltage drop in main power path during cranking.	Use Scenario: Regenerative braking energy recovery in 48 V mild-hybrid start-stop architecture. IC Role / Device Role / Timing Role: Freewheeling path for motor controller inverter during deceleration, returning energy to the 48 V bus. Use Value: 10,000 V/µs dV/dt rating ensures stable commutation during rapid voltage transitions; AEC-Q101 certification validates lifetime under vibration and thermal cycling.

Automotive LED Lighting

12 V DC/DC Buck Converter Output

Use Scenario: High-brightness LED headlamp module powered from vehicle battery with PWM dimming and thermal foldback.

IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter output stage, conducting during low-side FET off-time.

Use Value: 0.55 V V_F minimizes forward drop loss and self-heating, preserving lumen output stability across ambient temperatures up to 125 °C.

Use Scenario: 12 V input to 5 V/3 A step-down regulator supplying infotainment MCU and CAN transceiver.

IC Role / Device Role / Timing Role: Output rectifier in non-synchronous buck topology, handling continuous 8 A peak inductor current.

Use Value: 150 A I_FSM withstands cold-crank surges; DO-214AB footprint allows direct integration into existing 12 V power rail layouts.

Reverse Battery Protection

Start-Stop System Energy Recovery

Use Scenario: Protection circuit in body control module preventing damage during accidental reverse battery connection.

IC Role / Device Role / Timing Role: Series-connected Schottky diode blocking reverse polarity current while passing normal forward current.

Use Value: 40 V V_RRM exceeds 24 V system max; low V_F avoids excessive voltage drop in main power path during cranking.

Use Scenario: Regenerative braking energy recovery in 48 V mild-hybrid start-stop architecture.

IC Role / Device Role / Timing Role: Freewheeling path for motor controller inverter during deceleration, returning energy to the 48 V bus.

Use Value: 10,000 V/µs dV/dt rating ensures stable commutation during rapid voltage transitions; AEC-Q101 certification validates lifetime 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-8EWH04FN-M3	Same DO-214AB package, 40 V V_RRM, but higher V_F (0.62 V @ 8 A) and lower I_FSM (120 A).	Less suitable for high-surge automotive environments; acceptable in industrial DC/DC where transient margin is relaxed.	Choose when cost sensitivity outweighs surge margin; verify thermal rise with 0.07 V higher V_F.
ON Semiconductor SB840	DO-214AB, 40 V, but rated only to +125 °C T_J max and not AEC-Q101 qualified.	Not approved for automotive under-hood use; limited to consumer or industrial power supplies.	Select only for non-automotive designs requiring identical V_RRM/I_F but no automotive qualification.

Compared with VS-8EWH04FN-M3 and SB840, the SK84CH uniquely combines AEC-Q101 qualification, +150 °C operation, 150 A surge rating, and 0.55 V V_F - making it the preferred choice for thermally demanding, safety-critical automotive power paths where reliability and efficiency are co-constrained.

Availability

SK84CH is available at Aetrix Electronics and suitable for automotive LED lighting, 12 V DC/DC converters, and reverse battery protection requiring stable component supply across multi-year production cycles.

Supply support for SK84CH 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, specializing in power devices, rectifiers, and protection components.

The SK82CH–SK810CH series was designed specifically for automotive and industrial power conversion applications demanding AEC-Q101 reliability, low-loss Schottky performance, and robust surge handling in compact SMC packages.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for SK84CH?

The SK84CH has a V_RRM of 40 V, confirmed in the Absolute Maximum Ratings table across all versions of the SK82CH–SK810CH family datasheet. This rating defines the highest reverse voltage the device can block repeatedly without breakdown and is validated under standard test conditions per JEDEC standards.

Is SK84CH qualified for automotive applications?

Yes, SK84CH is explicitly AEC-Q101 qualified, as stated in the FEATURES section of the official Taiwan Semiconductor datasheet. This qualification covers stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge - confirming suitability for automotive under-hood and chassis-mounted systems.

What is the forward voltage (V_F) of SK84CH at 8 A and 25 °C?

The SK84CH exhibits a maximum forward voltage of 0.55 V at I_F = 8 A and T_J = 25 °C, per the Electrical Specifications table. This value is measured using a 0.3 ms pulse width and reflects the device's low conduction loss characteristic critical for high-efficiency power conversion.

Which package does SK84CH use, and what are its key mechanical properties?

SK84CH uses the DO-214AB (SMC) surface-mount package. Key mechanical properties include UL 94V-0 flammability-rated molding compound, matte tin-plated leads compliant with J-STD-002, moisture sensitivity level 1, and a typical weight of 0.210 g - all documented in the MECHANICAL DATA section.

Does SK84CH have a specified junction-to-ambient thermal resistance (R_θJA)?

Yes, the SK84CH has a typical R_θJA of 20 °C/W, as published in the THERMAL PERFORMANCE section. This value assumes standard JEDEC high-K test board conditions and is essential for estimating junction temperature rise in PCB-level thermal design.

SK84CH Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AB, SMC

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 40 V

Current - Average Rectified (Io):: 8A

Voltage - Forward (Vf) (Max) @ If:: 550 mV @ 8 A

Speed:: Fast Recovery =< 500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 500 µA @ 40 V

Capacitance @ Vr, F:: -

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AB (SMC)

Operating Temperature - Junction:: -55°C ~ 125°C

SK84CH FAQ

1.How can I place an order for SK84CH through Aetrix?

Please submit a Request for Quotation (RFQ) for SK84CH 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 SK84CH reliable?

The price and inventory of SK84CH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK84CH is usually 5 days.

3.What payment methods are accepted for SK84CH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK84CH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SK84CH?

SK84CH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SK84CH 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 SK84CH?

For technical support, including SK84CH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK84CH requirements.

6.How does Aetrix verify that SK84CH is sourced from the original manufacturer or authorized distributors?

All SK84CH 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 SK84CH meets industry standards.

7.What is the process for return or replacement of SK84CH?

All SK84CH units undergo pre-shipment inspection (PSI). If there is an issue with SK84CH, 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 SK84CH part is unused and in its original packaging.

Return procedure for SK84CH:

1.Submit a request within 90 days.

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

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