{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N5822US","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N5822US","canonicalUrl":"https://icboms.com/microchip/1N5822US","factsUrl":"https://icboms.com/api/mcp/products/1N5822US","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N5822US Schottky diode, 40 V reverse, 3 A forward, 500 mV Vf, SQ-MELF B package, surface mount, fast recovery < 500 ns.","salesMarkdown":"## Schottky rectifier — 40 V, 3 A, hermetic barrel The 1N5822US is a 40 V, 3 A Schottky rectifier in a hermetic SQ-MELF (B) package from Microchip Technology. Its 500 mV forward drop at 3 A keeps conduction losses low in power rectification, freewheeling, and OR-ing stages. The junction temperature range spans -65 to 125 °C — a military-grade temperature window that suits avionics power supplies, downhole instrumentation, or outdoor telecom rectifier stages where commercial parts would derate or fail. ## Switching speed and leakage — what the ratings mean Listed with a fast recovery spec of < 500 ns at > 200 mA — unusual for a Schottky, which is already a majority-carrier device. This suggests the part is characterized for higher-frequency rectification (e.g., 100 kHz+ switching supplies) where stored charge in a standard Schottky could still cause ringing. Reverse leakage is 100 µA at the full 40 V rating. Leakage in a Schottky doubles roughly every 10 °C; at 125 °C junction, expect leakage in the milliampere range — factor that into standby power budgets for hot environments. SQ-MELF (B) is a hermetic ceramic barrel with metallized end caps — no plastic body, no moisture sensitivity. It survives high-humidity or vacuum environments where a standard SMC package would absorb moisture and pop during reflow. Surface-mount, but the barrel shape requires careful solder-paste stencil design: the end-cap terminations need enough paste volume to form a fillet without bridging to the body. The package footprint is non-standard — confirm the land pattern against the manufacturer's recommended pad layout before committing the PCB. ## Lifecycle and compliance RoHS non-compliant. The hermetic construction typically uses lead-bearing solder in the end-cap termination. For EU or RoHS-enforced builds, an exemption (e.g., RoHS Annex III exemption 7a for high-melting-temperature solder) may be required — verify with your compliance team before specifying.","metaTitle":"Microchip 1N5822US Schottky Diode, 40V 3A, SQ-MELF","metaDescription":"Schottky rectifier, 40 V reverse, 3 A forward, 500 mV Vf. Active production. SQ-MELF hermetic package. RoHS non-compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Microchip Technology","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","Series":"-","Package":"Bulk","Diode Type":"Schottky","Mounting Type":"Surface Mount","Package / Case":"SQ-MELF, B","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"1N5822","Capacitance @ Vr, F":"-","Supplier Device Package":"B, SQ-MELF","Current - Reverse Leakage @ Vr":"100 µA @ 40 V","Voltage - DC Reverse (Vr) (Max)":"40 V","Current - Average Rectified (Io)":"3A","Operating Temperature - Junction":"-65°C~125°C","Voltage - Forward (Vf) (Max) @ If":"500 mV @ 3 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$77.8600","priceTiers":[{"qty":1,"price":"$77.86000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c0c11d3f339b5284279a9ea50d4643ca.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N5822US/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N5822US","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N5822US when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}