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

Diodes Incorporated S3K-13

Name: S3K-13
Brand: Diodes Incorporated
SKU: S3K-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S3K-13

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: S3K-13.pdf

Description:: DIODE GEN PURP 800V 3A SMC

Quantity:: RFQ Add To RFQ list

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Inventory:5,770

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Product details

Overview

S3K-13 from Diodes Incorporated is a 3.0A, 800V peak repetitive reverse voltage (V_RRM) surface-mount glass passivated rectifier diode in SMB package, optimized for high-current AC/DC conversion in power supplies and industrial controls, with 1.15V forward voltage at 3.0A and 100A non-repetitive surge capability.

For engineers reviewing the S3K-13 datasheet, S3K-13 pinout, S3K-13 application, or S3K-13 equivalent, this device serves as a standard single-phase half-wave rectifier requiring thermal derating above 75°C terminal temperature, compatible with automated SMT assembly and RoHS-compliant lead-free reflow profiles.

Technical Context

The S3K-13 is a unidirectional silicon junction rectifier with glass-passivated die construction, enabling stable operation up to +150°C junction temperature and low leakage (10 µA @ 25°C, 250 µA @ 125°C) under rated 800V DC blocking voltage. Its 10 °C/W junction-to-terminal thermal resistance assumes mounting on a 5.0 mm² copper pad.

Designed for resistive or inductive 60Hz line-frequency rectification, it requires 20% current derating for capacitive loads and exhibits 40 pF typical junction capacitance at 1 MHz and 4.0V reverse bias - critical for EMI filtering and snubber design in offline SMPS front-ends.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	800 V - Maximum peak reverse voltage before breakdown; defines safe operating limit in bridge or half-wave configurations with 60Hz AC input.
I_O	3.0 A @ T_T = 75°C - Average forward current rating; must be derated linearly to zero at 150°C terminal temperature per Fig.1.
V_FM	1.15 V @ I_F = 3.0A - Forward voltage drop determining conduction loss and thermal load in continuous operation.
I_FSM	100 A - Peak surge current tolerance for 8.3ms half-sine waveform; supports inrush immunity during cold-start of power supplies.
R_JT	10 °C/W - Junction-to-terminal thermal resistance with specified 5.0 mm² copper pad; used to calculate junction temperature rise under load.
C_T	40 pF @ 1 MHz, 4V - Junction capacitance affecting high-frequency noise coupling and snubber component selection.

Pinout & Package

SMB (DO-214AA) surface-mount package: molded plastic case, UL 94V-0 rated, cathode indicated by band marking; terminals are solder-plated for MIL-STD-202 compliant reflow.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry point during forward conduction	Connected to AC source or transformer secondary; polarity-sensitive for correct rectification direction.
Cathode	Current exit point during forward conduction	Marked with band; connects to output filter capacitor or load return; defines DC output polarity.

Key Features

Feature	Design Value
Glass passivated die	Enables stable long-term reliability and reduced surface leakage under humid or high-temperature conditions.
Low V_F (1.15V)	Reduces conduction losses by ~15% vs. comparable 1N54xx series diodes at 3A, lowering heatsink requirements.
100A surge rating	Withstands transformer inrush and lightning-induced transients without failure in 230VAC input stages.
RoHS-compliant lead-free finish	Meets EU Directive Annex exemptions for high-temp solder/glass; compatible with Pb-free reflow profiles (J-STD-020C Level 1).

Applications

AC/DC Power Supply Input Stage

Industrial Motor Drive Front-End

Use Scenario: Single-phase rectification of 230VAC mains in open-frame switch-mode power supplies.

IC Role / Device Role / Timing Role: Primary rectifier converting AC input to pulsating DC prior to bulk capacitor filtering.

Use Value: 800V V_RRM provides 2× safety margin over 230VAC RMS, while 1.15V V_FM limits conduction loss to <3.5W at full 3A load.

Use Scenario: Half-wave rectification in low-cost variable frequency drive (VFD) auxiliary power rails.

IC Role / Device Role / Timing Role: Supplies isolated control logic power from main DC bus via step-down transformer and rectifier stage.

Use Value: 100A I_FSM withstands motor startup surges; SMB footprint enables compact PCB layout in space-constrained gate driver modules.

LED Driver Bulk Rectification

UPS Battery Charger Input Stage

Use Scenario: Off-line LED driver with passive PFC using valley-fill topology.

IC Role / Device Role / Timing Role: Conducts during positive half-cycles to charge storage capacitors and supply constant-current LED string drivers.

Use Value: 40 pF C_T minimizes high-frequency switching noise coupling into sensitive analog current regulation circuitry.

Use Scenario: Dual-mode UPS charger accepting both 120VAC and 230VAC inputs via auto-ranging transformer.

IC Role / Device Role / Timing Role: Main rectifier in universal-input AC/DC converter feeding battery charging controller and inverter stage.

Use Value: -65°C to +150°C operating range ensures reliable operation in unconditioned telecom cabinet environments.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MUR380E	Ultrafast recovery (t_rr = 75 ns), higher V_F (1.7V), same SMB package and 800V rating	Better suited for high-frequency flyback snubberless designs; not ideal for 60Hz line-frequency use due to higher conduction loss	Select when EMI reduction via faster switching outweighs efficiency penalty in low-frequency rectification
Vishay VS-3EYH08-M3	Standard recovery (t_rr ≈ 2 µs), identical V_RRM/I_O, but SMC package (larger footprint, lower R_θJL)	Higher thermal mass supports sustained 3A load without external heatsink; incompatible with SMB-only footprints	Choose for thermally demanding applications where board space allows SMC and no rework of land pattern is feasible

Compared with MUR380E and VS-3EYH08-M3, the S3K-13 offers optimal balance of low forward loss, robust surge handling, and SMB footprint for cost-sensitive 60Hz rectification - whereas alternatives trade off speed or thermal performance for different system priorities.

Availability

S3K-13 is available at Aetrix Electronics and suitable for AC/DC power supplies, industrial motor drives, LED lighting drivers, and UPS battery chargers requiring stable component supply and RoHS-compliant manufacturing.

Supply support for S3K-13 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 high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.

The S3x-B series targets cost-optimized, high-volume rectification in line-powered equipment, emphasizing thermal robustness, surge resilience, and compatibility with automated SMT assembly lines.

FAQ

What is the maximum allowable terminal temperature for continuous operation of S3K-13?

The S3K-13 is rated for 3.0A average forward current only up to 75°C terminal temperature (T_T). Above that, current must be linearly derated to zero at 150°C, as shown in Fig.1 of DS16005. Exceeding 75°C without derating risks thermal runaway and premature failure due to rising leakage current.

Can S3K-13 be used in capacitive-input filter circuits without modification?

No - the datasheet explicitly requires 20% derating of I_O for capacitive loads. In such configurations, peak charging currents increase dramatically, raising junction temperature beyond safe limits even if RMS current remains within spec. Use with choke-input or active PFC front-ends avoids this limitation.

Is the S3K-13 RoHS-compliant and lead-free?

Yes, the standard S3K-13 is RoHS-compliant per EU Directive Annex Notes 5 and 7, with glass and high-temperature solder exemptions applied. It features matte tin lead-free plating and meets J-STD-020C Level 1 moisture sensitivity - no pre-baking required before reflow.

How does the SMB package of S3K-13 compare thermally to the SMC version (S3K-13)?

The SMB package has higher thermal resistance (R_JT = 10 °C/W) than SMC variants (typically ~6–7 °C/W). This means for the same 3A load, junction temperature rises ~4–5°C higher in SMB. PCB layout must include ≥5.0 mm² copper pad per the datasheet to achieve rated performance.

S3K-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: DO-214AB, SMC

Packaging:: Tape & Reel (TR)

Product Status:: Discontinued at Digi-Key

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 800 V

Current - Average Rectified (Io):: 3A

Voltage - Forward (Vf) (Max) @ If:: 1.15 V @ 3 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 10 µA @ 800 V

Capacitance @ Vr, F:: 40pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SMC

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

S3K-13 FAQ

1.How can I place an order for S3K-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for S3K-13 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 S3K-13 reliable?

The price and inventory of S3K-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S3K-13 is usually 5 days.

3.What payment methods are accepted for S3K-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S3K-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S3K-13?

S3K-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S3K-13 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 S3K-13?

For technical support, including S3K-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S3K-13 requirements.

6.How does Aetrix verify that S3K-13 is sourced from the original manufacturer or authorized distributors?

All S3K-13 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 S3K-13 meets industry standards.

7.What is the process for return or replacement of S3K-13?

All S3K-13 units undergo pre-shipment inspection (PSI). If there is an issue with S3K-13, 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 S3K-13 part is unused and in its original packaging.

Return procedure for S3K-13:

1.Submit a request within 90 days.

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

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