{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PAC1921-1-AIA-TR","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"PAC1921-1-AIA-TR","canonicalUrl":"https://icboms.com/microchip/PAC1921-1-AIA-TR","factsUrl":"https://icboms.com/api/mcp/products/PAC1921-1-AIA-TR","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology PAC1921-1-AIA-TR current monitor, high-side sensing, ±0.4% accuracy, 3V–5.5V input, 10-VFDFN exposed pad, -40°C to 85°C, Tape & Reel.","salesMarkdown":"## High-side current monitor with ±0.4% accuracy for power rail tracking The PAC1921-1-AIA-TR: This level of precision means the device can resolve small current changes — useful for detecting load faults, battery charge/discharge rates, or idle current draw in battery-powered gear. The high-side sensing method keeps the sense resistor between the supply and the load, preserving the system ground path — a cleaner arrangement than low-side sensing for applications where ground integrity matters. ## Package and board-fit for production and prototype runs A via array under the pad helps spread heat into the inner copper planes. It is offered on Tape & Reel (TR) for automated pick-and-place in volume production, and also in Cut Tape (CT) for prototype or low-quantity builds. The reel quantity is standard for the 10-VFDFN package size — confirm the reel count at quote time.","metaTitle":"PAC1921-1-AIA-TR Current Monitor, ±0.4% Accuracy, 10-VDFN","metaDescription":"Microchip Technology PAC1921-1-AIA-TR high-side current monitor, ±0.4% accuracy, 3V-5.5V input, -40°C to 85°C, 10-VFDFN exposed pad. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Accuracy":"±0.4%","Function":"Current Monitor","Mounting Type":"Surface Mount","Package / Case":"10-VFDFN Exposed Pad","Sensing Method":"High-Side","Voltage - Input":"3V ~ 5.5V","lifecycle_stage":"eol_hot","Operating Temperature":"-40°C ~ 85°C","Supplier Device Package":"10-VDFN (3x3)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.24","priceTiers":[{"qty":1,"price":"$1.24000","currency":"USD"},{"qty":25,"price":"$1.12480","currency":"USD"},{"qty":5000,"price":"$1.12500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/f2949787e7ed72eefbac3158c9fb6bee.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/PAC1921-1-AIA-TR/alternatives.json"},"ai":{"faq":[{"question":"What is the ±0.4% accuracy specification and why does it matter?","answer":"This level of precision allows the monitor to detect small current changes — useful for battery charge/discharge tracking, load fault detection, or idle current monitoring in portable equipment."},{"question":"What package does PAC1921-1-AIA-TR come in and is it available in Tape & Reel?","answer":"It comes in a 10-VFDFN exposed-pad package (3x3 mm body, 0.5 mm pitch). The device is offered on Tape & Reel (TR) for automated assembly and also in Cut Tape (CT) for prototype quantities."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/PAC1921-1-AIA-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/PAC1921-1-AIA-TR 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}}