{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BAT54FILM","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"BAT54FILM","canonicalUrl":"https://icboms.com/stmicroelectronics/BAT54FILM","factsUrl":"https://icboms.com/api/mcp/products/BAT54FILM","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics BAT54FILM Schottky diode, 40 V DC reverse voltage, 300 mA average rectified current, 5 ns reverse recovery time, SOT-23-3 surface-mount package.","salesMarkdown":"## What this Schottky diode brings to the board The STMicroelectronics BAT54FILM is a 40 V, 300 mA Schottky barrier diode in the standard SOT-23-3 surface-mount package. The 10 pF junction capacitance at 1 V keeps signal distortion low in RF and fast-logic applications. ## Ratings that define the fit The 40 V maximum reverse voltage sets the rail ceiling for reverse-polarity blocking and low-side clamping. The 300 mA average rectified current covers typical signal-level loads and auxiliary supply rails; stay within this continuous limit for reliable operation. Forward voltage drops to 900 mV at 100 mA, which is typical for a Schottky in this current class and influences thermal dissipation in tight layouts. Reverse leakage is specified at 1 µA at 30 V, a figure that rises with junction temperature — factor in derating if the board runs near the 150 °C junction maximum. The 5 ns reverse recovery time is the headline switching spec: it allows the diode to turn off fast enough for 100 kHz+ rectifiers and snubber networks without excessive ringing. ## Where it goes and what it handles This diode is a standard building block for low-power DC-DC converter freewheeling paths, reverse-polarity protection on input lines up to 40 V, and signal clamping in I/O protection networks.","metaTitle":"STMicroelectronics BAT54FILM Schottky Diode, 40V, 300mA","metaDescription":"BAT54FILM Schottky diode from STMicroelectronics: 40V reverse voltage, 300mA average current, 5ns trr, SOT-23-3. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","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":"Active","lifecycle_stage":"eol_hot","Base Product Number":"BAT54","Capacitance @ Vr, F":"10pF @ 1V, 1MHz","Supplier Device Package":"SOT-23-3","Reverse Recovery Time (trr)":"5 ns","Current - Reverse Leakage @ Vr":"1 µA @ 30 V","Voltage - DC Reverse (Vr) (Max)":"40 V","Current - Average Rectified (Io)":"300mA","Operating Temperature - Junction":"-40°C ~ 150°C","Voltage - Forward (Vf) (Max) @ If":"900 mV @ 100 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4000","priceTiers":[{"qty":1,"price":"$0.43000","currency":"USD"},{"qty":10,"price":"$0.31800","currency":"USD"},{"qty":100,"price":"$0.18030","currency":"USD"},{"qty":500,"price":"$0.11942","currency":"USD"},{"qty":1000,"price":"$0.09155","currency":"USD"},{"qty":3000,"price":"$0.07961","currency":"USD"},{"qty":6000,"price":"$0.07165","currency":"USD"},{"qty":15000,"price":"$0.06510","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a45db93da6c352b18b3e390448765d10.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BAT54FILM/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to BAT54FILM?","answer":"Any standard BAT54 Schottky diode in SOT-23-3 from a major manufacturer (e.g., Nexperia, ON Semiconductor, Diodes Inc.) is pin-compatible and functionally equivalent. The BAT54FILM is the STMicroelectronics ordering code for the tape-and-reel variant; the base BAT54 die and footprint are industry-standard."},{"question":"Can I use BAT54FILM for reverse polarity protection?","answer":"Yes. With a 40 V reverse voltage rating and 300 mA forward current capacity, it is well suited for reverse-polarity blocking on low-power DC inputs up to 30 V or so, provided the load current stays under the 300 mA average limit."},{"question":"Is BAT54FILM RoHS and lead-free compliant?","answer":"Yes, it is ROHS3 compliant, meaning it meets the latest RoHS directive including the exemption for lead in solder."},{"question":"How to order BAT54FILM in tape and reel packaging?","answer":"The BAT54FILM ordering code itself specifies the tape-and-reel (TR) packaging. When submitting an RFQ, simply reference this exact MPN — the reel quantity and tape format are fixed per the manufacturer's standard."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/BAT54FILM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/BAT54FILM 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}}