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

Vishay General Semiconductor - Diodes Division 1N5819-E3/51

Name: 1N5819-E3/51
Brand: Vishay General Semiconductor - Diodes Division
SKU: 1N5819-E3/51
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 1N5819-E3/51

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Diodes

Package:: DO-204AL, DO-41, Axial

Datasheet:: 1N5819-E3/51.pdf

Description:: DIODE SCHOTTKY 40V 1A DO204AL

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Inventory:6,971

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Product details

Overview

1N5819-E3/51 from Vishay General Semiconductor is a Schottky barrier rectifier optimized for low-voltage, high-frequency DC-to-DC conversion and freewheeling applications. It delivers 1.0 A average forward current, 40 V maximum repetitive peak reverse voltage, and 0.60 V typical forward voltage at 1.0 A, enabling high-efficiency power conversion in compact designs.

For engineers reviewing the 1N5819-E3/51 datasheet, 1N5819-E3/51 pinout, 1N5819-E3/51 application, or 1N5819-E3/51 equivalent, key selection criteria include its 25 A surge rating, 125 °C junction temperature limit, DO-41 package compatibility, and low 110 pF junction capacitance at 4.0 V for fast switching integrity.

Technical Context

This discrete Schottky diode uses a planar silicon structure with guardring overvoltage protection to sustain transient reverse stress without degradation. Its low forward voltage drop and extremely fast recovery (no minority carrier storage) minimize conduction and switching losses in high-frequency topologies.

The device operates across –65 °C to +125 °C and maintains stable reverse leakage (<10 mA at 100 °C) and thermal resistance (R_θJL = 15 °C/W) under pulsed and continuous load conditions per JESD 22-B106 solderability standards.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	40 V - Maximum repetitive reverse blocking capability for 24 V rail protection and 36 V transient clamping
I_F(AV)	1.0 A - Continuous forward current rating at 90 °C case temperature with 9.5 mm lead length
V_F @ 1.0 A	0.60 V - Low conduction loss enabling >92 % efficiency in 5–12 V buck converters
I_FSM	25 A - Peak surge withstand for inductive kickback in motor drive freewheeling paths
C_J @ 4 V	110 pF - Minimal capacitive loading for clean switching waveforms up to 1 MHz
T_J max.	125 °C - Junction temperature limit supporting operation in sealed industrial enclosures

Pinout & Package

Package: DO-204AL (DO-41), axial-leaded, glass-passivated silicon die in molded epoxy case with matte tin-plated leads compliant to J-STD-002 and JESD 22-B102. Polarity indicated by cathode band.

Pin/Terminal	Circuit Role	Design Meaning
Anode (unbanded end)	Forward current entry	Connects to lower-potential side of source (e.g., switch node in buck converter)
Cathode (banded end)	Forward current exit / reverse blocking terminal	Connects to output rail or ground return; blocks reverse voltage up to 40 V

Key Features

Feature	Design Value
Guardring overvoltage protection	Prevents localized avalanche breakdown during line transients, extending reliability in unregulated inputs
Very small conduction losses	0.60 V V_F at 1.0 A reduces power dissipation to 0.6 W versus >1.1 W for standard PN rectifiers
Extremely fast switching	No reverse recovery time (t_rr ≈ 0 ns) eliminates switching spikes and EMI in SMPS
RoHS-compliant & whisker-tested	E3 suffix meets JESD 201 Class 1A tin whisker resistance and EU Directive 2011/65/EU requirements

Applications

DC-to-DC Converters	Freewheeling Diodes
Use Scenario: Step-down (buck) regulator in portable battery-powered equipment operating from 5–24 V input rails. IC Role / Device Role / Timing Role: Output rectifier conducting during low-side switch off-time to maintain inductor current continuity. Use Value: 0.60 V V_F minimizes conduction loss and thermal rise, enabling higher power density without heatsinking.	Use Scenario: Inductive load suppression in relay drivers and brushed DC motor H-bridge circuits. IC Role / Device Role / Timing Role: Freewheeling path for stored inductor energy during switch turn-off transitions. Use Value: Zero reverse recovery eliminates voltage overshoot spikes that could damage MOSFETs or cause EMI compliance failure.
Polarity Protection	Low-Voltage Inverters
Use Scenario: Reverse-input protection in 3.3 V or 5 V USB-powered peripherals and IoT sensor nodes. IC Role / Device Role / Timing Role: Series-blocking diode preventing damage from accidental reverse connection. Use Value: 40 V V_RRM provides margin against hot-swap transients while 0.60 V drop preserves >90 % input voltage under full load.	Use Scenario: High-frequency AC output stage in compact solar microinverters and LED driver modules. IC Role / Device Role / Timing Role: Output rectification of high-frequency (100–500 kHz) transformer secondary waveforms. Use Value: 110 pF C_J and 25 A I_FSM support clean waveform fidelity and robust surge handling without snubbers.

DC-to-DC Converters

Freewheeling Diodes

Use Scenario: Step-down (buck) regulator in portable battery-powered equipment operating from 5–24 V input rails.

IC Role / Device Role / Timing Role: Output rectifier conducting during low-side switch off-time to maintain inductor current continuity.

Use Value: 0.60 V V_F minimizes conduction loss and thermal rise, enabling higher power density without heatsinking.

Use Scenario: Inductive load suppression in relay drivers and brushed DC motor H-bridge circuits.

IC Role / Device Role / Timing Role: Freewheeling path for stored inductor energy during switch turn-off transitions.

Use Value: Zero reverse recovery eliminates voltage overshoot spikes that could damage MOSFETs or cause EMI compliance failure.

Polarity Protection

Low-Voltage Inverters

Use Scenario: Reverse-input protection in 3.3 V or 5 V USB-powered peripherals and IoT sensor nodes.

IC Role / Device Role / Timing Role: Series-blocking diode preventing damage from accidental reverse connection.

Use Value: 40 V V_RRM provides margin against hot-swap transients while 0.60 V drop preserves >90 % input voltage under full load.

Use Scenario: High-frequency AC output stage in compact solar microinverters and LED driver modules.

IC Role / Device Role / Timing Role: Output rectification of high-frequency (100–500 kHz) transformer secondary waveforms.

Use Value: 110 pF C_J and 25 A I_FSM support clean waveform fidelity and robust surge handling without snubbers.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SB140-E3/52	Same DO-41 package; 40 V V_RRM, 1.0 A I_F(AV), but 0.55 V V_F @ 1.0 A (lower loss)	Slightly better efficiency in thermally constrained layouts due to lower V_F	Preferred where <0.55 V forward drop is required; verify layout clearance for alternate branding
SS14-HF	DO-214AC (SMA) surface-mount package; identical 40 V/1.0 A ratings; 0.55 V V_F @ 1.0 A	Requires PCB rework for SMT assembly; not drop-in for through-hole designs	Select when transitioning to automated SMT production; no change in electrical performance

Compared with 1N5819-E3/51, SB140-E3/52 offers lower conduction loss in the same through-hole footprint, while SS14-HF enables space-constrained SMT layouts without sacrificing voltage or current capability.

Availability

1N5819-E3/51 is available at Aetrix Electronics and suitable for DC-to-DC converters, freewheeling circuits, and polarity protection applications requiring stable component supply, long-term manufacturability, and RoHS-compliant sourcing.

Supply support for 1N5819-E3/51 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

Vishay Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements with emphasis on reliability, precision, and power efficiency.

The 1N5819-E3/51 belongs to Vishay's general-purpose Schottky rectifier product line, engineered for cost-effective, high-efficiency power conversion in consumer, industrial, and computing power supplies.

FAQ

What is the maximum junction temperature rating for the 1N5819-E3/51?

The 1N5819-E3/51 has a maximum junction temperature (T_J) of +125 °C, verified per Vishay Document Number 88525. This rating allows reliable operation in enclosed industrial environments and high-density PCB layouts where ambient temperatures reach 85 °C, provided thermal resistance to ambient remains within design limits. Derating curves in the 1N5819-E3/51 datasheet define safe current limits above 25 °C ambient.

Is the 1N5819-E3/51 RoHS-compliant and lead-free?

Yes, the 1N5819-E3/51 is RoHS-compliant and lead-free. The "E3" suffix confirms compliance with EU Directive 2011/65/EU and passing of JESD 201 Class 1A tin whisker testing. Lead finish is matte tin, solderable per J-STD-002 and JESD 22-B102. Vishay documentation explicitly states RoHS compliance for all E3-suffix parts in the 1N5817–1N5819 family.

What is the forward voltage drop of the 1N5819-E3/51 at 1.0 A?

The 1N5819-E3/51 exhibits a maximum instantaneous forward voltage (V_F) of 0.60 V at 1.0 A and 25 °C, as specified in the Electrical Characteristics table of Vishay Document Number 88525. At elevated temperatures (e.g., 100 °C), V_F decreases slightly, improving conduction efficiency in thermally managed designs using the 1N5819-E3/51.

Does the 1N5819-E3/51 have a specified reverse recovery time?

No, the 1N5819-E3/51 does not specify reverse recovery time (t_rr) because it is a Schottky barrier diode with majority-carrier conduction. Its switching is effectively instantaneous-no minority carrier storage means t_rr ≈ 0 ns. This eliminates switching losses and voltage spikes, a key advantage confirmed in Vishay's "Extremely fast switching" feature statement for the 1N5819-E3/51.

What package type is used for the 1N5819-E3/51?

The 1N5819-E3/51 uses the DO-204AL (DO-41) axial-leaded package, as documented in the Mechanical Data section of Vishay Document Number 88525. Dimensions include 2.7 mm diameter body, 5.2 mm length between leads, and matte tin-plated leads. Polarity is marked by a visible cathode band on the epoxy body.

1N5819-E3/51 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: -

Package/Case:: DO-204AL, DO-41, Axial

Packaging:: Bulk

Product Status:: Obsolete

Technology:: Schottky

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

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 600 mV @ 1 A

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

Reverse Recovery Time (trr):: -

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

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-204AL (DO-41)

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

1N5819-E3/51 FAQ

1.How can I place an order for 1N5819-E3/51 through Aetrix?

Please submit a Request for Quotation (RFQ) for 1N5819-E3/51 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 1N5819-E3/51 reliable?

The price and inventory of 1N5819-E3/51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5819-E3/51 is usually 5 days.

3.What payment methods are accepted for 1N5819-E3/51?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5819-E3/51 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 1N5819-E3/51?

1N5819-E3/51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 1N5819-E3/51 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 1N5819-E3/51?

For technical support, including 1N5819-E3/51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5819-E3/51 requirements.

6.How does Aetrix verify that 1N5819-E3/51 is sourced from the original manufacturer or authorized distributors?

All 1N5819-E3/51 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 1N5819-E3/51 meets industry standards.

7.What is the process for return or replacement of 1N5819-E3/51?

All 1N5819-E3/51 units undergo pre-shipment inspection (PSI). If there is an issue with 1N5819-E3/51, 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 1N5819-E3/51 part is unused and in its original packaging.

Return procedure for 1N5819-E3/51:

1.Submit a request within 90 days.

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

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