{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BAS70FILM","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"BAS70FILM","canonicalUrl":"https://icboms.com/stmicroelectronics/BAS70FILM","factsUrl":"https://icboms.com/api/mcp/products/BAS70FILM","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics BAS70FILM Schottky diode, 70 V reverse voltage, 70 mA average rectified current, 1 V forward drop at 15 mA, 2 pF capacitance, SOT-23-3 surface mount.","salesMarkdown":"The STMicroelectronics BAS70FILM is a small-signal Schottky diode rated for 70 V reverse voltage (Vr max) and 70 mA average rectified current (Io). Its 1 V forward drop at 15 mA is typical for a Schottky of this current class, and the 2 pF junction capacitance at 0 V, 1 MHz makes it suitable for high-speed switching and signal clamping in low-power circuits. The SOT-23-3 package allows direct placement on compact PCBs alongside other surface-mount passives. ## Obsolete — last-time-buy reality The BAS70FILM is marked obsolete by STMicroelectronics. For a production BOM, a pin-compatible alternative from the BAS70 family (such as the BAS70-04FILM or BAS70-05FILM) should be evaluated; those remain in current lifecycle status. ## Low capacitance — design note for signal clamping The 2 pF capacitance (at 0 V, 1 MHz) is the standout spec for RF and high-speed digital I/O protection. A standard switching diode like the 1N4148 has roughly 4 pF; the BAS70FILM halves that, reducing signal degradation on clock lines and data buses up to several hundred MHz. If the application is a simple DC rectifier or polarity protection below 100 kHz, the capacitance is irrelevant — but for ESD clamps on Ethernet, USB, or CAN lines, this part earns its place.","metaTitle":"BAS70FILM Schottky Diode, 70 V 70 mA SOT-23-3, Obsolete","metaDescription":"STMicroelectronics BAS70FILM Schottky diode: 70 V reverse, 70 mA average, 1 V forward at 15 mA, 2 pF capacitance. SOT-23-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Small Signal =< 200mA (Io), Any Speed","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Technology":"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":"BAS70","Capacitance @ Vr, F":"2pF @ 0V, 1MHz","Supplier Device Package":"SOT-23-3","Current - Reverse Leakage @ Vr":"10 µA @ 70 V","Voltage - DC Reverse (Vr) (Max)":"70 V","Current - Average Rectified (Io)":"70mA","Operating Temperature - Junction":"150°C (Max)","Voltage - Forward (Vf) (Max) @ If":"1 V @ 15 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4100","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/6ef6cbd80280d76fbec9e9af8c2aee5d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BAS70FILM/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for BAS70FILM?","answer":"There is no official STMicroelectronics replacement. Within the same BAS70 family, the BAS70-04FILM (dual series) or BAS70-05FILM (dual common-cathode) are still in current lifecycle and share the same 70 V / 70 mA ratings and SOT-23-3 footprint. For a single-diode alternative, the BAS70-00FILM (single) is the closest. The BAT54 is a common cross-shop but is rated at 30 V reverse — verify the voltage margin before substituting."},{"question":"What are the specifications of BAS70FILM?","answer":"Schottky diode, 70 V reverse voltage, 70 mA average rectified current, 1 V forward drop at 15 mA, 2 pF capacitance at 0 V, 1 MHz, SOT-23-3 package, junction temperature 150 °C max."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/BAS70FILM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/BAS70FILM when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:15:20.493Z","lastPublished":"2026-07-16T15:15:20.493Z","indexable":true}}