{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BAT54ZFILM","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"BAT54ZFILM","canonicalUrl":"https://icboms.com/stmicroelectronics/BAT54ZFILM","factsUrl":"https://icboms.com/api/mcp/products/BAT54ZFILM","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics BAT54ZFILM Schottky diode, 40 V reverse voltage, 300 mA average rectified current, 5 ns reverse recovery time, SOD-123 surface-mount package, -40°C to 150°C junction temperature.","salesMarkdown":"The BAT54ZFILM is a Schottky barrier diode from STMicroelectronics, rated for 40 V DC reverse voltage and 300 mA average rectified current. Its 5 ns reverse recovery time places it in the fast-switching class, suitable for high-frequency rectification, freewheeling, and clamping in low-power DC-DC converters, polarity protection, and signal conditioning circuits. ## Obsolete — sourcing reality and the replacement path marks the BAT54ZFILM as Obsolete. This means ST has stopped production; no last-time-buy window remains. The closest active drop-in replacement for the SOD-123 footprint is the BAT54S series or the BAT54FILM variant, both still listed as current by ST. For BOM continuity, qualifying the BAT54FILM (same SOD-123 case, same electrical ratings) eliminates single-source risk. ## SOD-123 footprint — layout and thermal notes The SOD-123 package is a small outline diode package with a single cathode band. The 10 pF junction capacitance at 1 V is low enough for RF and high-speed switching applications up to several hundred MHz, but the 900 mV forward voltage drop at 100 mA is higher than some low-Vf Schottky types — expect about 0.45 V to 0.5 V at 10 mA, typical for a 40 V Schottky. The 1 µA reverse leakage at 30 V is tight for high-temperature operation; at 125°C junction, leakage can increase 10x, so derate the reverse voltage in hot environments.","metaTitle":"STMicroelectronics BAT54ZFILM Schottky Diode, 40V, 300mA","metaDescription":"BAT54ZFILM Schottky diode from STMicroelectronics: 40V reverse voltage, 300mA average current, 5ns trr, SOD-123.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","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":"SOD-123","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Base Product Number":"BAT54","Capacitance @ Vr, F":"10pF @ 1V, 1MHz","Supplier Device Package":"SOD-123","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":"$0.4700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a45db93da6c352b18b3e390448765d10.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BAT54ZFILM/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/BAT54ZFILM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/BAT54ZFILM when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T15:07:30.624Z","lastPublished":"2026-07-16T15:07:30.624Z","indexable":true}}