{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1N4148-1","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"1N4148-1","canonicalUrl":"https://icboms.com/microchip/1N4148-1","factsUrl":"https://icboms.com/api/mcp/products/1N4148-1","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology 1N4148-1 standard switching diode, 75 V reverse, 200 mA forward, 20 ns trr, DO-35 axial through-hole package, bulk.","salesMarkdown":"## DO-35 axial footprint and board integration The 1N4148-1 comes in a DO-204AH (DO-35) axial-lead through-hole package — the same glass-sealed body that has been a staple in MIL-spec and industrial designs for decades. The 0.020-inch diameter leads suit hand-solder or wave-solder assembly; the body length is roughly 0.160 inches, so the seated height above the board is set by the lead bend radius, not the component itself. ## 20 ns trr — the switching ceiling Reverse recovery time is 20 ns — this is a standard-recovery switching diode, not a fast-recovery or Schottky type. At 20 ns, the diode can handle switching frequencies into the low-MHz range in clamping or snubbing roles, but the recovery charge will be higher than a Schottky of similar voltage rating. For a 100 kHz flyback clamp, the 20 ns trr is fine; for a 2 MHz synchronous rectifier, the reverse recovery losses will dominate the thermal budget. The forward voltage is 1.2 V maximum at 100 mA — typical for a standard silicon diode of this die size. At 200 mA average rectified current, the conduction loss is about 240 mW; the DO-35 glass body can dissipate that in still air with a 50°C ambient, but above 100°C ambient the junction temperature approaches the 175°C absolute maximum. ## Active production — no last-time-buy pressure Microchip Technology lists the 1N4148-1 as Active — no EOL notice, no NRND flag. This means the die, the glass passivation, and the assembly line are all current. For a BOM that already qualifies this part, there is no urgency to stockpile or qualify a substitute. The part is RoHS non-compliant, so it is restricted to legacy builds or exempt military/aerospace contracts that explicitly allow lead-bearing solder. The base product number is 1N4148, so cross-references to other manufacturers' 1N4148 variants are possible, but the -1 suffix indicates Microchip's specific screening and test flow; verify the BOM's acceptance of alternate sources before substituting.","metaTitle":"1N4148-1 Microchip Technology DO-35 Switching Diode","metaDescription":"1N4148-1 standard switching diode from Microchip Technology. 75V reverse, 200mA forward, 20ns trr. DO-35 axial package. Active production. RoHS non-compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Microchip Technology","Speed":"Small Signal =< 200mA (Io), Any Speed","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":"1N4148","Capacitance @ Vr, F":"-","Supplier Device Package":"DO-35","Reverse Recovery Time (trr)":"20 ns","Current - Reverse Leakage @ Vr":"500 nA @ 75 V","Voltage - DC Reverse (Vr) (Max)":"75 V","Current - Average Rectified (Io)":"200mA","Operating Temperature - Junction":"-65°C~175°C","Voltage - Forward (Vf) (Max) @ If":"1.2 V @ 100 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.7500","priceTiers":[{"qty":1,"price":"$0.75000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/76e98f5dc61ff5dd7bd7288693de5fac.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/1N4148-1/alternatives.json"},"ai":{"faq":[{"question":"What is 1N4148-1's reverse recovery time and what does it mean for switching applications?","answer":"The reverse recovery time (trr) is 20 ns. This is a standard-recovery silicon switching diode; it is suitable for general-purpose clamping, snubbing, and low-frequency rectification up to about 1 MHz. For higher-frequency switching or lower forward-drop requirements, a Schottky diode would be a better fit."},{"question":"What compliance documentation does Microchip Technology provide for 1N4148-1?","answer":"The 1N4148-1 is RoHS non-compliant (lead-bearing termination finish). Microchip provides a datasheet with electrical characteristics, thermal derating curves, and package dimensions."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/1N4148-1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/1N4148-1 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}}