{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BAS 40-05 B5003","brand":"Infineon Technologies","brandSlug":"infineon","productSlug":"BAS-40-05-B5003","canonicalUrl":"https://icboms.com/infineon/BAS-40-05-B5003","factsUrl":"https://icboms.com/api/mcp/products/BAS%2040-05%20B5003","rawCanonicalId":null},"summary":{"shortDescription":"Infineon BAS 40-05 B5003 Schottky diode, 1 pair common cathode, 40 V reverse voltage, 120 mA average rectified current per diode, 100 ps reverse recovery time, SOT-23 surface mount package.","salesMarkdown":"The BAS 40-05 B5003: Schottky diode with a 1 pair common cathode configuration, rated for 40 V reverse voltage and 120 mA average rectified current per diode. The 100 ps reverse recovery time suits high-speed switching applications. Infineon lists the BAS 40-05 B5003 as obsolete. That means no factory orders, no last-time-buy window — the only channel is surplus inventory or broker stock. ## Common cathode pair — why it matters for layout The 1 pair common cathode arrangement means both anodes share a single cathode node, reducing trace length and parasitic inductance in high-speed switching loops. For a flyback clamp or a dual-diode OR-ing circuit, this one-package solution saves board area versus two discrete SOT-23 diodes and simplifies the routing.","metaTitle":"Infineon BAS 40-05 B5003 Schottky Diode, 40 V","metaDescription":"Infineon BAS 40-05 B5003 Schottky diode, 40 V reverse voltage, 120 mA average rectified current, common cathode pair in SOT-23.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"Infineon Technologies","Speed":"Small Signal =< 200mA (Io), Any Speed","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Diode Type":"Schottky","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"BAS 40","Diode Configuration":"1 Pair Common Cathode","Supplier Device Package":"PG-SOT23","Reverse Recovery Time (trr)":"100 ps","Current - Reverse Leakage @ Vr":"1 µA @ 30 V","Voltage - DC Reverse (Vr) (Max)":"40 V","Operating Temperature - Junction":"150°C(Max)","Voltage - Forward (Vf) (Max) @ If":"1 V @ 40 mA","Current - Average Rectified (Io) (per Diode)":"120mA (DC)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/44df76da5149267357870826728c6c92.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the replacement for BAS 40-05 B5003?","answer":"Infineon does not list a direct official replacement. The base product number BAS 40 covers active variants in the same SOT-23 package with the same common cathode configuration — check those for a functional equivalent. For an exact pin-compatible drop-in, you will need to source the BAS 40-05 B5003 through surplus channels."},{"question":"Is BAS 40-05 B5003 a common cathode Schottky diode?","answer":"Yes, it is a 1 pair common cathode Schottky diode — both anodes share a single cathode node inside the SOT-23 package."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/infineon/BAS-40-05-B5003","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/infineon/BAS-40-05-B5003 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}