Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Diodes Incorporated SK32-7-F

Name: SK32-7-F
Brand: Diodes Incorporated
SKU: SK32-7-F
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: SK32-7-F

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: SK32-7-F.pdf

Description:: DIODE SCHOTTKY 20V 3A SMC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:3,268

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

SK32-7-F from Diodes Incorporated is a surface-mount Schottky barrier rectifier with 20 V maximum recurrent peak reverse voltage, 3.0 A average forward rectified current, and 0.50 V typical forward voltage at 3.0 A. It features guard ring construction for transient protection and is used in low-voltage DC/DC converter outputs and high-efficiency AC-DC secondary-side rectification.

For engineers reviewing the SK32-7-F datasheet, SK32-7-F pinout, SK32-7-F application, or SK32-7-F equivalent, key selection factors include VF vs. IR trade-off at 25°C/100°C, thermal resistance (R_JA = 60°C/W), SMC package footprint compatibility, and legacy design support versus B3X0-series migration path.

Technical Context

This Schottky rectifier operates with metal-semiconductor junction architecture to minimize forward conduction loss and enable fast switching recovery. Its guard ring structure enhances surge robustness against repetitive line transients in offline power supplies.

Rated for -65°C to +150°C junction temperature, it delivers 100 A non-repetitive peak forward surge current under JEDEC-standard 8.3 ms half-sine conditions and exhibits 300 pF typical junction capacitance at 1 MHz and 4.0 V reverse bias.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	20 V - Maximum allowable reverse voltage before breakdown; sets upper limit for secondary-side rectification in ≤15 V output supplies.
I_(AV)	3.0 A - Average forward current rating on 8.0 mm² copper land pads; defines continuous power delivery capability in thermally constrained layouts.
V_F @ 3.0 A	0.50 V - Forward voltage drop determining conduction loss (1.5 W at 3 A); directly impacts efficiency in high-current, low-V_OUT rails.
I_R @ 25°C	0.5 mA - Reverse leakage at rated V_DC; low value minimizes standby power loss in always-on circuits.
R_JA	60 °C/W - Junction-to-ambient thermal resistance with standard SMC mounting; used to calculate ΔT_J rise under load for reliability margining.
C_T	300 pF - Junction capacitance at 1 MHz / 4 V reverse bias; affects high-frequency switching noise and EMI filter design.

Pinout & Package

Package: SMC (DO-214AB), molded plastic case with matte tin lead-free plating, moisture sensitivity level 1 per J-STD-020A, cathode band polarity marking.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to transformer secondary or switching node; must handle 100 A surge peaks without bond wire fusing.
Cathode	Forward current exit point	Connected to output capacitor and load; cathode band identifies terminal orientation for automated placement verification.

Key Features

Feature	Design Value
Guard ring construction	Improves ruggedness against repetitive voltage transients in unregulated AC-DC outputs without external snubbers.
Low V_F (0.50 V @ 3 A)	Reduces conduction loss by ~30% versus comparable PN-junction rectifiers, enabling higher efficiency in 3.3–12 V output stages.
SMC package (6.6 × 7.1 mm)	Provides 2× PCB area reduction vs. SMA while maintaining 3 A current rating, supporting compact multi-rail power modules.
UL 94V-0 flammability rating	Meets safety requirements for enclosed industrial and consumer end equipment without additional flame-retardant conformal coating.

Applications

AC-DC Adapter Secondary Rectification

USB-C PD Power Delivery Output Stage

Use Scenario: 5–20 V output rectification in wall adapters with flyback topology.

IC Role / Device Role / Timing Role: Primary unidirectional current path converting transformer AC to regulated DC; no timing function.

Use Value: 0.50 V V_F reduces heat generation in sealed enclosures where airflow is restricted.

Use Scenario: 9/15/20 V output rail rectification in portable device chargers.

IC Role / Device Role / Timing Role: High-current Schottky diode handling up to 3 A continuous output; no control or timing role.

Use Value: SMC footprint enables dense layout matching USB-C controller ICs and dual-MOSFET synchronous rectifier footprints.

DC/DC Converter Output Stage

Industrial Sensor Power Supply

Use Scenario: 3.3–12 V isolated buck-derived outputs in telecom power modules.

IC Role / Device Role / Timing Role: Freewheeling path during switch off-time; critical for energy transfer efficiency.

Use Value: 300 pF capacitance minimizes high-frequency ringing when paired with ceramic output capacitors.

Use Scenario: 5 V auxiliary supply for analog sensor front-ends in harsh environments.

IC Role / Device Role / Timing Role: Input rectifier for linear regulator feeding precision analog circuitry.

Use Value: -65°C to +150°C operating range ensures functionality in outdoor or engine-bay mounted sensors.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
B320B-13-F	Same 20 V V_RRM, 3 A I_(AV), but lower V_F (0.45 V @ 3 A) and improved R_JA (50 °C/W).	Preferred for new designs targeting <1.4 W conduction loss; requires same SMC footprint.	Select for higher efficiency or tighter thermal margins; not drop-in due to different date code marking and tape/reel packaging.
SS32HE3/57T	20 V V_RRM, 3 A I_(AV), but higher V_F (0.55 V @ 3 A) and wider R_JA range (55–65 °C/W).	Used in cost-sensitive consumer power supplies where 0.05 V V_F penalty is acceptable.	Select when sourcing flexibility across multiple distributors is prioritized over minimal V_F.

Compared with SK32-7-F, B320B-13-F offers measurable efficiency gain and thermal improvement for new designs, while SS32HE3/57T provides broader distribution access at slight conduction loss cost-neither is pin-identical but all share SMC mechanical compatibility.

Availability

SK32-7-F is available at Aetrix Electronics and suitable for AC-DC adapter secondary rectification, USB-C PD output stages, and industrial sensor power supplies requiring stable component supply across extended production lifecycles.

Supply support for SK32-7-F 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in power management, signal integrity, and protection devices for industrial, computing, and consumer markets.

The SKxx series targets cost-effective, high-reliability Schottky rectification in legacy power supply designs, with emphasis on surge robustness and wide temperature operation rather than ultra-low VF optimization.

FAQ

Is SK32-7-F RoHS and REACH compliant?

Yes, SK32-7-F uses matte tin lead-free plating and complies with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Certificate of Compliance is available upon request and confirms absence of restricted substances including lead, cadmium, mercury, hexavalent chromium, PBB, and PBDE.

What is the maximum junction temperature during continuous operation at 3.0 A?

At 3.0 A average forward current with 8.0 mm² copper land pads and 25°C ambient, junction temperature rises by 180°C (3.0 A² × 60°C/W = 180°C), reaching 205°C - exceeding the 150°C absolute maximum. Derating per Fig. 1 is required; at 100°C ambient, max I_(AV) drops to ~1.8 A.

Can SK32-7-F replace SK33-7-F in an existing design?

No - SK32-7-F has 20 V V_RRM, while SK33-7-F is rated for 30 V. Substituting SK32-7-F in a 30 V circuit risks reverse breakdown during line surges or transient events. Only interchange within the same SKxx family if V_RRM and thermal profile match the original design margin.

Why is SK32-7-F marked "NOT RECOMMENDED FOR NEW DESIGN"?

Diodes Incorporated recommends migrating to the B3X0 series (e.g., B320B-13-F) for new designs due to its lower forward voltage (0.45 V), improved thermal resistance (50°C/W), and enhanced surge capability - all in the same SMC package. SK32-7-F remains supported for legacy repair and continuity programs.

SK32-7-F Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: DO-214AB, SMC

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

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:: 300pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMC

Operating Temperature - Junction:: -65°C ~ 150°C

SK32-7-F FAQ

1.How can I place an order for SK32-7-F through Aetrix?

Please submit a Request for Quotation (RFQ) for SK32-7-F 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 SK32-7-F reliable?

The price and inventory of SK32-7-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SK32-7-F is usually 5 days.

3.What payment methods are accepted for SK32-7-F?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SK32-7-F transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SK32-7-F?

SK32-7-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SK32-7-F 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 SK32-7-F?

For technical support, including SK32-7-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SK32-7-F requirements.

6.How does Aetrix verify that SK32-7-F is sourced from the original manufacturer or authorized distributors?

All SK32-7-F 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 SK32-7-F meets industry standards.

7.What is the process for return or replacement of SK32-7-F?

All SK32-7-F units undergo pre-shipment inspection (PSI). If there is an issue with SK32-7-F, 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 SK32-7-F part is unused and in its original packaging.

Return procedure for SK32-7-F:

1.Submit a request within 90 days.

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

Tech Hub

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…