{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BU7421SG-TR","brand":"ROHM Semiconductor","brandSlug":"rohm","productSlug":"BU7421SG-TR","canonicalUrl":"https://icboms.com/rohm/BU7421SG-TR","factsUrl":"https://icboms.com/api/mcp/products/BU7421SG-TR","rawCanonicalId":null},"summary":{"shortDescription":"ROHM BU7421SG-TR, single CMOS op-amp, 90 kHz gain bandwidth, 0.05 V/µs slew rate, 8.5 µA supply, 1.7–5.5 V supply range, -40 to 105°C, SC-74A/SOT-753 package.","salesMarkdown":"## 90 kHz CMOS op-amp for low-frequency sensor conditioning The ROHM BU7421SG-TR is a single-channel CMOS operational amplifier designed for applications where power consumption and signal fidelity at low frequencies matter more than raw speed. The 8.5 µA supply current per channel keeps the power budget tight, and the rail-to-rail output swing lets you drive an ADC input directly without an extra gain stage. ## Input bias and offset — DC accuracy for precision loops With a 1 pA typical input bias current and 1 mV input offset voltage, the BU7421SG-TR handles high-impedance sources like pH probes or piezoelectric sensors without loading the signal. The 8 mA output drive per channel is enough to swing a small relay or drive a 2 kΩ load to the rails, but not intended for heavy capacitive loads — keep the load capacitance under a few hundred picofarads unless you add a series resistor. ## Package and footprint — SOT-753 / SC-74A","metaTitle":"ROHM BU7421SG-TR CMOS Op-Amp, 90 kHz, 1.7–5.5 V","metaDescription":"ROHM BU7421SG-TR single CMOS op-amp: 90 kHz GBP, 8.5 µA supply, 1.7–5.5 V range, -40 to 105°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Slew Rate":"0.05V/µs","Mounting Type":"Surface Mount","Amplifier Type":"CMOS","Package / Case":"SC-74A, SOT-753","lifecycle_stage":"eol_hot","Current - Supply":"8.5µA","Number of Circuits":"1","Current - Input Bias":"1 pA","Operating Temperature":"-40°C ~ 105°C","Gain Bandwidth Product":"90 kHz","Voltage - Input Offset":"1 mV","Supplier Device Package":"5-SSOP","Current - Output / Channel":"8 mA","Voltage - Supply Span (Max)":"5.5 V","Voltage - Supply Span (Min)":"1.7 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.76","priceTiers":[{"qty":1,"price":"$0.76000","currency":"USD"},{"qty":10,"price":"$0.66500","currency":"USD"},{"qty":25,"price":"$0.62440","currency":"USD"},{"qty":100,"price":"$0.50950","currency":"USD"},{"qty":250,"price":"$0.47328","currency":"USD"},{"qty":500,"price":"$0.40280","currency":"USD"},{"qty":1000,"price":"$0.32224","currency":"USD"},{"qty":3000,"price":"$0.29203","currency":"USD"},{"qty":6000,"price":"$0.28500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/cb1d277425d2c7e2615c89739c57d6c0.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BU7421SG-TR/alternatives.json"},"ai":{"faq":[{"question":"Is BU7421SG-TR RoHS compliant?","answer":"Yes, the BU7421SG-TR is ROHS3 compliant per ROHM's official status."},{"question":"Does BU7421SG-TR have an equivalent or second-source part?","answer":"The closest functional peer is the ROHM BU7271SG-TR, which shares the same 90 kHz GBP, 0.05 V/µs slew rate, 1 pA input bias, and 8 mA output drive in an identical SOT-753 package. The BU7271SG-TR is specified as a general-purpose amplifier rather than CMOS type, but the parametric overlap is high enough to qualify as a drop-in alternative for most designs. For a wider bandwidth option, the BU7462NUX-TR offers 1 MHz GBP and 1 V/µs slew rate in a dual-channel package."},{"question":"What is the difference between BU7421SG-TR and BU7421SG?","answer":"The BU7421SG-TR is the tape-and-reel packaged variant of the same die. The suffix '-TR' indicates the reeled format for automated pick-and-place assembly, while the base BU7421SG typically ships in tube or bulk. Electrical characteristics and package (SOT-753) are identical."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/rohm/BU7421SG-TR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/rohm/BU7421SG-TR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T14:34:45.345Z","lastPublished":"2026-07-20T14:34:45.345Z","indexable":true}}