{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BAT54SFILM","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"BAT54SFILM","canonicalUrl":"https://icboms.com/stmicroelectronics/BAT54SFILM","factsUrl":"https://icboms.com/api/mcp/products/BAT54SFILM","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics BAT54SFILM Schottky diode, 40 V Vr, 300 mA per diode, 5 ns trr, 900 mV Vf at 100 mA, 1 µA leakage at 30 V, SOT-23-3, -40°C to 150°C junction.","salesMarkdown":"## 5 ns reverse recovery — what it buys the switching design The BAT54SFILM is a small-signal Schottky diode from STMicroelectronics, configured as a series pair of two diodes in a single SOT-23-3 package. Its 5 ns reverse recovery time (trr) is the headline switching-speed spec — that is the time the diode takes to turn off after forward bias, and at 5 ns it is fast enough for high-frequency rectification, clamping, and steering in power supplies, DC-DC converters, and signal-conditioning circuits where a standard recovery diode would cause excessive switching loss or ringing. The 1 µA reverse leakage at 30 V is typical for a Schottky of this voltage class — low enough for most signal and low-power rail applications, but worth checking if the circuit runs from a battery or a high-impedance sense node where leakage current matters. The 150°C max junction is the thermal limit for derating — if the diode sits near a hot regulator or in a high-ambient enclosure, the forward current and power dissipation need to be derated per the thermal curve. ## SOT-23-3 dual diode — footprint and fit The BAT54SFILM comes in the industry-standard SOT-23-3 surface-mount package. The series-connected pair of Schottky diodes shares the same three-pin footprint as many other dual-diode SOT-23 parts, so the board layout is straightforward and the part is a drop-in for common-cathode or common-anode series configurations. The SOT-23-3 body is small enough for dense PCB layouts but still large enough for manual rework with a fine-tip iron or hot-air station.","metaTitle":"STMicroelectronics BAT54SFILM Schottky Diode, 5 ns trr","metaDescription":"STMicroelectronics BAT54SFILM Schottky diode, 40 V, 300 mA per diode, 5 ns reverse recovery time, SOT-23-3 package. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Speed":"Fast Recovery =< 500ns, > 200mA (Io)","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":"Active","lifecycle_stage":"eol_hot","Base Product Number":"BAT54","Diode Configuration":"1 Pair Series Connection","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","Operating Temperature - Junction":"-40°C~150°C","Voltage - Forward (Vf) (Max) @ If":"900 mV @ 100 mA","Current - Average Rectified (Io) (per Diode)":"300mA (DC)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a45db93da6c352b18b3e390448765d10.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BAT54SFILM/alternatives.json"},"ai":{"faq":[{"question":"What is the reverse recovery time of BAT54SFILM?","answer":"The reverse recovery time (trr) is 5 ns. That is the time the diode takes to switch from forward conduction to reverse blocking, and at 5 ns it is suitable for fast-switching applications like DC-DC converters and high-frequency rectification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/BAT54SFILM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/BAT54SFILM 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}}