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

Taiwan Semiconductor Corporation SK32BHR5G

Name: SK32BHR5G
Brand: Taiwan Semiconductor Corporation
SKU: SK32BHR5G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SK32BHR5G

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AA, SMB

Datasheet:: SK32BHR5G.pdf

Description:: DIODE SCHOTTKY 20V 3A DO214AA

Quantity:: RFQ Add To RFQ list

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Inventory:4,439

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Product details

Overview

SK32BHR5G from Taiwan Semiconductor is a 3A, 20V Schottky barrier surface-mount rectifier in DO-214AA (SMB) package, qualified to AEC-Q101, with 0.50V max forward voltage at 3A/25°C, 70A non-repetitive surge current, and guard-ring overvoltage protection-used in automotive LED lighting and DC/DC converter freewheeling paths.

For engineers reviewing the SK32BHR5G datasheet, SK32BHR5G pinout, SK32BHR5G application, or SK32BHR5G equivalent, this page delivers verified electrical parameters, thermal resistance values, reverse leakage behavior at multiple junction temperatures, packaging dimensions, and AEC-Q101 qualification context for automotive-grade power rectification design.

Technical Context

The SK32BHR5G implements a single-die Schottky junction optimized for low forward voltage drop and fast switching in low-voltage, high-frequency power conversion. Its 20V V_RRM, 3A continuous forward current rating, and 10,000 V/μs dV/dt capability support robust operation in automotive 12V systems and synchronous rectifier auxiliary paths.

Thermally, it features 23°C/W junction-to-lead (R_θJL) and 63°C/W junction-to-ambient (R_θJA) resistance, enabling reliable conduction under sustained load without forced airflow. The device operates across –55°C to +125°C junction temperature range and meets JESD201 Class 2 whisker resistance and J-STD-020 Level 1 moisture sensitivity requirements.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	20 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in 12V automotive circuits with transient spikes.
I_F	3 A - Continuous forward current; supports compact PCB layout in space-constrained DC/DC converters and LED drivers.
V_F (max)	0.50 V @ 3A, 25°C - Low conduction loss reduces heat generation and improves system efficiency in battery-powered applications.
I_FSM	70 A - Peak surge current handling for load dump or cold-crank events in automotive environments.
R_θJL	23 °C/W - Enables direct thermal coupling to copper pour or heatsink pad for passive thermal management.
T_J Range	–55°C to +125°C - Validated operation across full automotive ambient temperature envelope including engine bay mounting.
AEC-Q101	Qualified - Confirmed reliability for automotive electronics per stress test standard, including HTRB, HTGB, and temperature cycling.

Pinout & Package

Package: DO-214AA (SMB), surface-mount plastic case with matte tin-plated leads, cathode indicated by band, weight ≈0.100 g.

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-battery protection configurations.
Cathode	Forward current exit / reverse-blocking terminal	Marked by band; ties to higher-potential rail (e.g., battery input or output node); blocks reverse current flow above 20V.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive use via high-temperature reverse bias, temperature cycling, and mechanical shock testing.
Guard ring structure	Enhances edge termination robustness against voltage transients and localized field crowding during reverse bias.
Low I_R at 100°C	≤10 mA reverse leakage at rated V_RRM and 100°C-minimizes standby power loss in always-on vehicle modules.
Moisture sensitivity level 1	No bake requirement before reflow; compatible with standard SMT assembly processes without preconditioning.
Halogen-free & RoHS compliant	Meets IEC 61249-2-21 and EU RoHS Directive 2011/65/EU for environmentally restricted substances.

Applications

Automotive LED Lighting	12V DC/DC Converter Freewheeling
Use Scenario: Powering headlamp or DRL modules in 12V vehicle architectures with PWM dimming and load-dump transients. IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current path during MOSFET off-time in buck or boost regulators. Use Value: 0.50V V_F minimizes conduction loss and thermal rise, extending LED driver lifetime under continuous operation.	Use Scenario: Secondary-side rectification in isolated flyback or forward converters powering infotainment or ADAS subsystems. IC Role / Device Role / Timing Role: Unidirectional current valve enabling energy transfer from transformer secondary to output capacitor. Use Value: 70A I_FSM withstands startup surges and line transients without degradation in cyclic duty applications.
Reverse Battery Protection	Engine Control Unit (ECU) Power Input
Use Scenario: Preventing damage when jumper cables are incorrectly connected during service or jump-starting. IC Role / Device Role / Timing Role: Series-connected anode-to-battery and cathode-to-system rail, blocking reverse polarity current flow. Use Value: 20V V_RRM provides sufficient margin above nominal 12V while maintaining low V_F for minimal insertion loss.	Use Scenario: Input stage protection and rectification in ECU power supply modules exposed to harsh engine bay conditions. IC Role / Device Role / Timing Role: Primary rectifier converting alternator AC output or battery feed into stable DC input for LDOs and PMICs. Use Value: AEC-Q101 qualification and –55°C to +125°C T_J range ensure functional integrity across full automotive lifecycle and environmental stress.

Automotive LED Lighting

12V DC/DC Converter Freewheeling

Use Scenario: Powering headlamp or DRL modules in 12V vehicle architectures with PWM dimming and load-dump transients.

IC Role / Device Role / Timing Role: Freewheeling diode providing low-loss current path during MOSFET off-time in buck or boost regulators.

Use Value: 0.50V V_F minimizes conduction loss and thermal rise, extending LED driver lifetime under continuous operation.

Use Scenario: Secondary-side rectification in isolated flyback or forward converters powering infotainment or ADAS subsystems.

IC Role / Device Role / Timing Role: Unidirectional current valve enabling energy transfer from transformer secondary to output capacitor.

Use Value: 70A I_FSM withstands startup surges and line transients without degradation in cyclic duty applications.

Reverse Battery Protection

Engine Control Unit (ECU) Power Input

Use Scenario: Preventing damage when jumper cables are incorrectly connected during service or jump-starting.

IC Role / Device Role / Timing Role: Series-connected anode-to-battery and cathode-to-system rail, blocking reverse polarity current flow.

Use Value: 20V V_RRM provides sufficient margin above nominal 12V while maintaining low V_F for minimal insertion loss.

Use Scenario: Input stage protection and rectification in ECU power supply modules exposed to harsh engine bay conditions.

IC Role / Device Role / Timing Role: Primary rectifier converting alternator AC output or battery feed into stable DC input for LDOs and PMICs.

Use Value: AEC-Q101 qualification and –55°C to +125°C T_J range ensure functional integrity across full automotive lifecycle and environmental stress.

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-3K20H01-M3/5AT	Same DO-214AA package, 20V V_RRM, but 0.49V V_F (typ) at 3A; no AEC-Q101 documentation provided.	Not certified for automotive use; suitable for industrial/commercial DC/DC where qualification is not mandated.	Select if AEC-Q101 is not required and marginally lower V_F is prioritized over qualification traceability.
ON Semiconductor SB320-T	DO-214AA, 20V, 3A, 0.52V V_F (max) at 3A; AEC-Q101 qualified per datasheet Rev. 5 (2022).	Identical automotive qualification scope and thermal specs; slightly higher V_F increases conduction loss by ~4% at full load.	Choose when cross-manufacturer second sourcing is needed with equivalent reliability and same footprint.

Compared with VS-3K20H01-M3/5AT and SB320-T, the SK32BHR5G offers the lowest documented V_F maximum (0.50V) among AEC-Q101-qualified 20V/3A SMB Schottkys, delivering optimal efficiency in thermally constrained automotive modules without sacrificing qualification compliance.

Availability

SK32BHR5G is available at Aetrix Electronics and suitable for automotive LED lighting, 12V DC/DC converter freewheeling, and reverse battery protection requiring stable component supply across production lifecycles.

Supply support for SK32BHR5G 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 Company (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, specializing in power devices, TVS diodes, and rectifiers for automotive and industrial markets.

The SK32BHR5G belongs to TSC's SKxBH Schottky rectifier family, engineered specifically for AEC-Q101-compliant automotive power conversion where low forward voltage, high surge tolerance, and robust thermal performance are critical.

FAQ

What is the maximum junction temperature rating for SK32BHR5G?

The SK32BHR5G has a maximum junction temperature (T_J) of +125°C under continuous operation, with storage temperature ranging from –55°C to +150°C. This rating enables deployment in under-hood automotive applications where ambient temperatures exceed 85°C, provided thermal design maintains junction temperature within specification using its 23°C/W R_θJL.

Is SK32BHR5G suitable for reverse battery protection in 12V systems?

Yes, SK32BHR5G is suitable for reverse battery protection in 12V automotive systems. Its 20V V_RRM provides adequate margin above nominal 12V and typical load-dump transients, while its 0.50V V_F ensures minimal voltage drop and power loss during normal forward conduction-critical for preserving system efficiency and thermal budget in always-on modules.

Does SK32BHR5G have AEC-Q101 qualification documentation available?

Yes, SK32BHR5G is explicitly AEC-Q101 qualified per the official Taiwan Semiconductor datasheet (Version B2212). Qualification includes high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), temperature cycling, and mechanical shock testing-fully documented in the product release notes and supported by TSC's automotive quality management system.

What is the reverse leakage current of SK32BHR5G at 100°C?

At 100°C junction temperature and rated 20V reverse voltage, the SK32BHR5G exhibits a maximum reverse leakage current (I_R) of 10 mA. This value is confirmed in the Electrical Specifications table of the datasheet and reflects worst-case behavior under elevated thermal stress, supporting reliable operation in hot under-hood environments.

What packaging format is used for SK32BHR5G?

SK32BHR5G is supplied in DO-214AA (SMB) surface-mount package, with matte tin-plated leads compliant with J-STD-002 solderability standards. It ships in tape-and-reel format with 3,000 units per reel, meeting J-STD-020 Level 1 moisture sensitivity-requiring no baking prior to reflow soldering.

SK32BHR5G Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AA, SMB

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Schottky

Voltage - DC Reverse (Vr) (Max):: 20 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 500 mV @ 3 A

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

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 500 µA @ 20 V

Capacitance @ Vr, F:: -

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AA (SMB)

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

SK32BHR5G FAQ

1.How can I place an order for SK32BHR5G through Aetrix?

Please submit a Request for Quotation (RFQ) for SK32BHR5G 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 SK32BHR5G reliable?

The price and inventory of SK32BHR5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK32BHR5G is usually 5 days.

3.What payment methods are accepted for SK32BHR5G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK32BHR5G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SK32BHR5G?

SK32BHR5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SK32BHR5G 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 SK32BHR5G?

For technical support, including SK32BHR5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK32BHR5G requirements.

6.How does Aetrix verify that SK32BHR5G is sourced from the original manufacturer or authorized distributors?

All SK32BHR5G 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 SK32BHR5G meets industry standards.

7.What is the process for return or replacement of SK32BHR5G?

All SK32BHR5G units undergo pre-shipment inspection (PSI). If there is an issue with SK32BHR5G, 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 SK32BHR5G part is unused and in its original packaging.

Return procedure for SK32BHR5G:

1.Submit a request within 90 days.

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

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