1N5822US Alternative and Replacement Guide

YINT SS34 is the primary commercial candidate for redesigns that need the 40 V, 3 A Schottky function associated with 1N5822US. Hermetic, D-5B and military requirements are handled separately through a specification review.

What the 1N5822US is

The 1N5822US is a 40 V 3 A Schottky rectifier in a hermetic square MELF package. Microchip lists it in production and ties the family to MIL-PRF-19500/620 options. The suffix and quality level therefore carry mechanical and compliance meaning beyond the basic voltage and current ratings.

The reference device is a hermetic SQ MELF Schottky rectifier using Schottky in D-5B square MELF surface mount. A useful replacement comparison covers reverse voltage, forward current, surge capability, forward loss, leakage, recovery behavior, temperature and package at the relevant test conditions.

1N5822US key specifications

The table summarizes the reference family and the YINT candidate. Confirm the complete manufacturer order code and current datasheet for the source in your BOM; YINT can help review the comparison for your application.

1N5822US and YINT candidate comparison

The reference 1N5822US is listed at 40 V and 3.0 A in D-5B square MELF surface mount. YINT SS34 is listed at 40 V and 3.0 A in SMA DO-214AC commercial surface mount. Use the table to compare the remaining surge, forward-voltage, leakage and temperature limits at the stated test conditions.

Choosing the right 1N5822US replacement

Reverse voltage margin

Measure the maximum reverse voltage at the diode terminals under steady state, startup, shutdown, minimum load, maximum input and credible fault conditions. Use a probe connection that does not create its own ringing. Select a repetitive reverse rating above the measured peak with the margin required by the product standard and reliability target.

Forward current and thermal design

Average current alone does not establish thermal compatibility. Rectifier current is often pulsed, and package ratings assume a defined lead or case temperature. Calculate conduction loss from the current waveform, then verify junction temperature using the replacement package thermal path and the actual copper area.

A small difference in forward voltage can change dissipation by several tenths of a watt at 3 A. Compare both devices at the same current and junction temperature before predicting thermal performance.

Surge current and startup stress

Compare the surge waveform, pulse duration, initial junction temperature and repetition rate with the candidate data. A single half-sine IFSM number is not a repetitive-current rating. Capacitor charging, motor stall and hot-plug events may need separate transient analysis.

Switching behavior

Schottky rectifiers have negligible minority-carrier storage, but they still have junction capacitance and reverse leakage. In a high-frequency converter, compare turn-off current, capacitance-related loss and switch-node ringing on the completed board.

Package options and design support

The proposed YINT package is SMA DO-214AC commercial surface mount, while the reference part uses D-5B square MELF surface mount. For a new PCB, review pad dimensions, polarity, creepage and thermal copper around the YINT package. For an existing layout, send the board drawing to YINT so the team can check the available package route.

For military, aerospace or source-controlled programs, send the required quality level, package specification and customer documentation to YINT. The team can separate the commercial redesign option from any program that needs a qualified hermetic device.

1N5822US replacement options from YINT

Recommended YINT alternative

SS34 provides the 40 V, 3 A Schottky function for a commercial redesign using a plastic SMA package. Projects that require hermetic construction or military screening need a separate source and quality review.

Package options for your design

Specify at the inquiry stage whether the design can use SMA DO-214AC commercial surface mount or must retain the D-5B square MELF surface mount layout. This lets YINT identify the correct order code and prepare a relevant sample.

Why choose YINT for 1N5822US replacement

YINT can support the 1N5822US replacement project with a focused parameter comparison, the YINT SS34 datasheet, package guidance and sample coordination. Share the original order code and application requirements to receive a recommendation based on the actual circuit instead of a generic part-number cross-reference.

YINT support for your 1N5822US replacement project

1. Submit the complete 1N5822US order code and a short description of the application.
2. YINT reviews the electrical class and shortlists the relevant SS34 order code.
3. The customer and YINT confirm the package, polarity and mounting requirements.
4. YINT coordinates the datasheet, quotation and sample quantity for the selected candidate.
5. The customer evaluates the sample in the target circuit, with YINT available for technical questions.
6. Sales confirms the production quantity, target date and commercial terms for the approved order code.

Information for a fast YINT replacement recommendation

• Original manufacturer, complete 1N5822US order code, datasheet or a clear part photo.
• Circuit function, schematic details, input and output conditions, and switching frequency.
• Required reverse voltage, forward current, surge waveform, recovery behavior, leakage and thermal limits.
• Existing package and footprint, polarity, solder process, and whether a PCB update is planned. The YINT SS34 candidate uses SMA DO-214AC commercial surface mount.
• Operating-temperature range, environmental or qualification standard, sample quantity and project timing.
• Any hermetic, D-5B, military quality-level or customer-controlled source requirement.

FAQ

1. Which YINT part is recommended as a 1N5822US alternative

Start with YINT SS34. Its headline class is 40 V and 3.0 A; the final order code depends on the package and operating conditions.

2. What is the reverse voltage of 1N5822US

The reference repetitive reverse-voltage rating is 40 V. The circuit waveform must remain below that rating with the required design margin.

3. What current can 1N5822US carry

The published average forward-current rating is 3.0 A, but the permitted current depends on the waveform, mounting condition and temperature.

4. Which package options are available for the replacement

The proposed YINT SS34 uses SMA DO-214AC commercial surface mount; the reference 1N5822US uses D-5B square MELF surface mount. Send a footprint drawing if package compatibility is a priority.

5. How can I request a confirmed YINT replacement recommendation

Send YINT the complete 1N5822US order code, original datasheet or part photo, circuit conditions, package requirement and target quantity. The team can then recommend an exact order code and coordinate samples for customer evaluation.

6. What should customers with hermetic or military requirements provide

Send YINT the full 1N5822US order code, D-5B package requirement, hermeticity requirement, military quality level and source-control documents. YINT can then identify whether a commercial redesign option or a qualified sourcing route best fits the project.

Selection summary

Use YINT SS34 as the first cross-reference candidate for 1N5822US, then choose the package and exact order code from the circuit's voltage, current, surge, thermal and switching requirements.

To begin, send YINT the complete 1N5822US order code, the required package, the main operating conditions, sample quantity and target date. The team can return a focused datasheet and sample response.