{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TSZ121ICT","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"TSZ121ICT","canonicalUrl":"https://icboms.com/stmicroelectronics/TSZ121ICT","factsUrl":"https://icboms.com/api/mcp/products/TSZ121ICT","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics TSZ121ICT zero-drift operational amplifier, single circuit, 400 kHz gain bandwidth, 0.19 V/µs slew rate, 1 µV input offset, rail-to-rail output, SC-70-5 package, -40°C to 125°C.","salesMarkdown":"## Zero-drift precision in a 5-pin SC-70 The STMicroelectronics TSZ121ICT is a single-channel zero-drift operational amplifier with 1 µV input offset, 400 kHz gain-bandwidth product, and 0.19 V/µs slew rate. Supply current is 31 µA. Output drive is 18 mA per channel. Input bias current is 70 pA. ## Temperature range and package — where it fits on the board The SC-70-5 package (also known as SOT-353) is a five-lead, 2.0 mm × 2.1 mm footprint that fits on tight mixed-signal boards where every square millimetre counts. Surface-mount assembly is standard; no exposed pad, so the thermal path is through the leads only — keep the copper pour under the part connected to a ground plane for best heat spreading.","metaTitle":"STMicro TSZ121ICT Zero-Drift Op-Amp, 400 kHz, SC-70-5","metaDescription":"STMicroelectronics TSZ121ICT zero-drift op-amp: 1 µV offset, 400 kHz GBW, 31 µA supply, rail-to-rail output, -40 to 125°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":"0.19V/µs","Output Type":"Rail-to-Rail","Mounting Type":"Surface Mount","Amplifier Type":"Zero-Drift","Package / Case":"5-TSSOP, SC-70-5, SOT-353","lifecycle_stage":"eol_hot","Current - Supply":"31µA","Number of Circuits":"1","Current - Input Bias":"70 pA","Operating Temperature":"-40°C ~ 125°C","Gain Bandwidth Product":"400 kHz","Voltage - Input Offset":"1 µV","Supplier Device Package":"SC-70-5","Current - Output / Channel":"18 mA","Voltage - Supply Span (Max)":"5.5 V","Voltage - Supply Span (Min)":"1.8 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.51","priceTiers":[{"qty":1,"price":"$1.51000","currency":"USD"},{"qty":10,"price":"$1.35900","currency":"USD"},{"qty":25,"price":"$1.28200","currency":"USD"},{"qty":100,"price":"$1.09220","currency":"USD"},{"qty":250,"price":"$1.02556","currency":"USD"},{"qty":500,"price":"$0.89736","currency":"USD"},{"qty":1000,"price":"$0.74353","currency":"USD"},{"qty":3000,"price":"$0.69225","currency":"USD"},{"qty":6000,"price":"$0.66661","currency":"USD"},{"qty":15000,"price":"$0.64097","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8cf23f30d7f2dc8a3857ca49207c7d4a.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TSZ121ICT/alternatives.json"},"ai":{"faq":[{"question":"Is TSZ121ICT rail-to-rail?","answer":"Yes, the output type is rail-to-rail. The input common-mode range is not rail-to-rail — it extends from the negative rail to about 1.1 V below the positive rail at 3.3 V supply, so high-side sensing at low supply voltages needs attention."},{"question":"What is the closest functional equivalent to TSZ121ICT?","answer":"The OA4ZHA33Q is a quad-channel zero-drift amplifier with the same 400 kHz GBW, 0.19 V/µs slew rate, 1 µV offset, and 70 pA bias current, but in a different package and four circuits instead of one. For a single-channel drop-in, the TSV621ICT is a general-purpose (not zero-drift) alternative with 420 kHz GBW and 4 mV offset — the offset difference is significant for precision DC applications."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/TSZ121ICT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/TSZ121ICT 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}}