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

Diodes Incorporated 1N5819HW-13

Name: 1N5819HW-13
Brand: Diodes Incorporated
SKU: 1N5819HW-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5819HW-13

Manufacturer:: Diodes Incorporated

Category:: Single Diodes

Package:: SOD-123

Datasheet:: 1N5819HW-13.pdf

Description:: DIODE SCHOTTKY 40V 1A SOD123

Quantity:: RFQ Add To RFQ list

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Inventory:2,876

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Product details

Overview

1N5819HW-13 from Diodes Incorporated is a 1.0A surface-mount Schottky barrier rectifier in SOD-123 package, featuring 40V peak repetitive reverse voltage, 0.45V typical forward voltage at 1.0A, and 25A non-repetitive surge current capability; used for polarity protection and freewheeling in DC-DC converters and low-voltage power supplies.

For engineers reviewing the 1N5819HW-13 datasheet, 1N5819HW-13 pinout, 1N5819HW-13 application, or 1N5819HW-13 equivalent, key selection criteria include forward voltage drop at rated current, thermal resistance (222°C/W), reverse leakage at elevated temperature, and SOD-123 footprint compatibility with high-frequency switching topologies.

Technical Context

This Schottky diode employs guard-ring die construction to enhance transient robustness and reduce leakage under reverse bias. Its low junction capacitance (110pF at 4V, 1MHz) and fast recovery behavior support operation in 100kHz–1MHz DC-DC flyback and buck converter freewheeling paths.

The device operates across –65°C to +125°C with derated average current above 90°C ambient, and exhibits 1.0mA reverse leakage at 40V/25°C and 15mA at 40V/100°C - critical for thermal-aware power rail design in compact industrial and automotive modules.

Key Specifications

Parameter	Value and Actual Design Meaning
VRRM	40 V - Maximum reverse voltage before breakdown; sets upper limit for input rail protection in 24V systems.
IF(AV)	1.0 A @ TL = 90°C - Continuous DC output current rating with heatsink-limited terminal temperature.
VF	0.45 V @ IF = 1.0A - Low conduction loss enabling >92% efficiency in 3.3V/5V synchronous rectifier replacements.
IFSM	25 A - Surge withstand for 8.3ms half-sine; supports inrush limiting in hot-plug circuits.
RJA	222 °C/W - Thermal resistance on FR-4 board; defines minimum copper area needed for 1A continuous operation.
CT	110 pF @ VR = 4V, f = 1MHz - Low junction capacitance minimizes switching noise and EMI in high-frequency SMPS.

Pinout & Package

Package: SOD-123 - Surface-mount plastic case (UL 94V-0), dimensions 3.55–3.85 mm × 2.55–2.85 mm × 1.40–1.70 mm, cathode band marked, weight ≈ 0.01 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Current entry node during forward conduction	Connected to lower-potential side of load or switch node; requires 0.25″×1.0″ copper pad per datasheet layout guidance.
Cathode	Current exit node; marked with band	Connected to higher-potential rail or ground return; requires larger 0.75″×1.0″ copper pad for thermal dissipation.

Key Features

Feature	Design Value
Guard-ring die construction	Improves transient immunity and reduces leakage drift under voltage stress, enhancing reliability in noisy industrial environments.
Low VF at 1A	0.45 V enables <0.45W conduction loss at full load - critical for thermally constrained PCB layouts.
High IFSM	25A surge rating allows use without external fusing in 12V automotive accessory power rails.
SOD-123 footprint	Standardized JEDEC outline ensures compatibility with automated placement and reflow profiles for high-volume manufacturing.

Applications

DC-DC Converter Freewheeling

Polarity Protection

Use Scenario: Used as secondary-side freewheeling diode in non-synchronous buck converters operating at 500kHz.

IC Role / Device Role: Provides low-loss current path during high-side MOSFET off-time, minimizing voltage overshoot and switching losses.

Use Value: 0.45V VF reduces conduction loss by ~35% vs. standard PN rectifiers, improving efficiency by 1.2% at 1A output.

Use Scenario: Placed in series with V_IN to prevent damage from reversed battery or adapter connections.

IC Role / Device Role: Unidirectional current gate blocking reverse voltage up to 40V while passing 1A forward current.

Use Value: Low 0.32V VF at 0.1A ensures minimal dropout (<3%) in 3.3V supply lines, preserving system margin.

Low-Voltage Inverter Output

Automotive Body Control Module

Use Scenario: Output rectification stage in 12V-to-24V boost inverters for LED lighting drivers.

IC Role / Device Role: Converts high-frequency AC from H-bridge into regulated DC output with minimal ripple.

Use Value: 110pF junction capacitance limits high-frequency ringing, reducing EMI filter component count by one stage.

Use Scenario: Reverse-battery protection in 12V microcontroller power domains within BCMs.

IC Role / Device Role: Blocks –14V transients while conducting 1A nominal current during cold-crank conditions.

Use Value: Withstands 15mA IR at 40V/100°C, ensuring no thermal runaway during extended engine-off high-temp soak.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SB140-TB	Same SOD-123 package, 40V VRRM, but 0.55V VF @ 1A (higher loss); RJA = 240°C/W	Higher thermal resistance limits continuous current to 0.85A at 90°C ambient	Prefer where cost sensitivity outweighs 0.1V VF penalty and board space allows minor copper adjustment.
SS14-E3/5AT	40V VRRM, 0.5V VF @ 1A, but 1.2A IF(AV); RJA = 190°C/W; RoHS-compliant matte tin lead finish	Higher current rating and better thermal performance enable 1.2A operation without derating	Select when upgrading legacy designs requiring tighter thermal margins or Pb-free compliance.

Compared with SB140-TB and SS14-E3/5AT, the 1N5819HW-13 delivers the lowest VF (0.45V) among SOD-123 1A Schottkys, making it optimal for efficiency-critical 1A loads where thermal headroom is constrained and lead-free finish is not mandated.

Availability

1N5819HW-13 is available at Aetrix Electronics and suitable for DC-DC converter freewheeling, polarity protection, and low-voltage inverter output applications requiring stable component supply and consistent SOD-123 assembly compatibility.

Supply support for 1N5819HW-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, headquartered in Plano, Texas, serving industrial, computing, consumer, and automotive markets with high-reliability components.

The 1N5819HW belongs to Diodes' general-purpose Schottky rectifier product line, engineered for high-efficiency, low-voltage power conversion in space-constrained surface-mount applications.

FAQ

What is the maximum junction temperature for continuous operation?

The 1N5819HW-13 has a maximum junction temperature of +125°C. Continuous operation at full 1.0A current requires maintaining terminal temperature ≤90°C per datasheet derating curve; exceeding this necessitates reduced current or enhanced PCB copper to manage R_JA = 222°C/W.

Is the 1N5819HW-13 RoHS compliant and halogen-free?

Yes - the 1N5819HW-13 meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. The SOD-123 package uses UL 94V-0 rated molding compound, and terminals are matte tin-plated copper, verified in Diodes' AP02007 packaging specification.

Can this diode replace a 1N5819 through-hole part in existing designs?

No - the 1N5819HW-13 is SOD-123 surface-mount only and not a direct footprint replacement for axial-lead 1N5819. Mechanical redesign is required; however, its electrical specs (40V, 1A, 0.45V VF) match closely, making it suitable for new SMT layouts targeting same functionality.

What is the reverse recovery time (t_rr) specification?

Schottky diodes like the 1N5819HW-13 have no minority-carrier storage, so t_rr is effectively zero. Datasheet specifies "no reverse recovery charge" - confirmed by absence of t_rr parameter and typical reverse recovery waveform showing instantaneous turn-off in application notes DS30217.

1N5819HW-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SOD-123

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Technology:: Schottky

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

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 750 mV @ 3 A

Speed:: No Recovery Time > 500mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 1 mA @ 40 V

Capacitance @ Vr, F:: 50pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-123

Operating Temperature - Junction:: -65°C ~ 125°C

1N5819HW-13 FAQ

1.How can I place an order for 1N5819HW-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5819HW-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 1N5819HW-13 reliable?

The price and inventory of 1N5819HW-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5819HW-13 is usually 5 days.

3.What payment methods are accepted for 1N5819HW-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5819HW-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5819HW-13?

1N5819HW-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5819HW-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 1N5819HW-13?

For technical support, including 1N5819HW-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5819HW-13 requirements.

6.How does Aetrix verify that 1N5819HW-13 is sourced from the original manufacturer or authorized distributors?

All 1N5819HW-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 1N5819HW-13 meets industry standards.

7.What is the process for return or replacement of 1N5819HW-13?

All 1N5819HW-13 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5819HW-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 1N5819HW-13 part is unused and in its original packaging.

Return procedure for 1N5819HW-13:

1.Submit a request within 90 days.

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

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