{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N647-1","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N647-1","canonicalUrl":"https://icboms.com/microchip/1N647-1","factsUrl":"https://icboms.com/api/mcp/products/1N647-1","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N647-1 general purpose standard recovery diode, 400 V reverse, 400 mA average rectified current, DO-204AH (DO-35) axial-lead glass package, through-hole mount.","salesMarkdown":"## 400 V, 400 mA — the headroom decision The 1N647-1 is a general-purpose standard recovery rectifier rated for 400 V reverse voltage and 400 mA average rectified current. The 400 V Vr covers a 240 VAC line (340 V peak) with margin, but not a 400 VAC line (565 V peak). The 400 mA Io is continuous — peak repetitive current is higher but not specified here; for a capacitive-input filter, the surge current at power-on may exceed the rating unless a series resistor limits it. Standard recovery (>500 ns, >200 mA Io) means this diode is not intended for fast switching. At line-frequency rectification (50/60 Hz) the recovery time is irrelevant; in a flyback snubber above a few kHz the stored charge will cause excessive dissipation and junction heating. ## Junction temperature and package limits The junction temperature range is -65°C to 175°C — military temperature grade. The DO-35 glass package is hermetic, so moisture ingress and thermal cycling in avionics or downhole environments are not a concern. At 400 mA forward current and 1 V forward drop, dissipation is 400 mW; in still air the DO-35's thermal resistance (approx 200°C/W junction-to-ambient) means the junction rises 80°C above ambient, leaving 95°C headroom to the 175°C limit. Reverse leakage is 50 nA at 400 V — low enough for high-impedance bias circuits or voltage-dropper applications where leakage current would otherwise shift the operating point. The leakage doubles roughly every 10°C, so at 125°C junction it is about 1.6 µA, still negligible for most circuits.","metaTitle":"Microchip 1N647-1 General Purpose Diode, 400V 400mA DO-35","metaDescription":"1N647-1 standard recovery rectifier, 400V 400mA, DO-35 glass axial package. Active production at Microchip. RoHS non-compliant. Quoted 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":"Standard Recovery >500ns, > 200mA (Io)","Series":"-","Package":"Bulk","Diode Type":"Standard","Mounting Type":"Through Hole","Package / Case":"DO-204AH, DO-35, Axial","Product Status":"Active","lifecycle_stage":"eol_hot","Base Product Number":"1N647","Capacitance @ Vr, F":"-","Supplier Device Package":"DO-35","Current - Reverse Leakage @ Vr":"50 nA @ 400 V","Voltage - DC Reverse (Vr) (Max)":"400 V","Current - Average Rectified (Io)":"400mA","Operating Temperature - Junction":"-65°C~175°C","Voltage - Forward (Vf) (Max) @ If":"1 V @ 400 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6400","priceTiers":[{"qty":1,"price":"$1.64000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/920e06f676405e3a362af92fabfe974a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N647-1/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 1N647-1 and how is it quoted?","answer":"No stock-holding claim is made here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N647-1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N647-1 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}}