{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MMBT2222A","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"MMBT2222A","canonicalUrl":"https://icboms.com/stmicroelectronics/MMBT2222A","factsUrl":"https://icboms.com/api/mcp/products/MMBT2222A","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics MMBT2222A NPN transistor, 40 V Vce, 600 mA Ic, 350 mW, SOT-23-3 surface mount, Tape & Reel.","salesMarkdown":"## Obsolete NPN general-purpose switch The STMicroelectronics MMBT2222A is an NPN general-purpose switching transistor in the SOT-23-3 surface-mount package, rated for 40 V collector-emitter breakdown and 600 mA continuous collector current. The 270 MHz transition frequency (fT) means it handles switching speeds into the low-MHz range without excessive storage time, though the 350 mW power dissipation ceiling in the SOT-23 package limits continuous conduction to well below the 600 mA peak rating — derate for ambient temperature and duty cycle. Vce saturation is specified at 1 V maximum with 50 mA base drive and 500 mA collector current — a useful figure for estimating on-state voltage drop in a saturated switch. ## Package and compliance The SOT-23-3 footprint (also known as TO-236-3 or SC-59) is a standard small-signal transistor land pattern — the same footprint used by hundreds of NPN and PNP devices, so board spins for alternative parts are minimal. ## Sourcing an obsolete part Because STMicroelectronics has marked the MMBT2222A obsolete, the primary supply channel is independent distribution — surplus and new-old-stock inventory held by brokers and specialty houses.","metaTitle":"STMicroelectronics MMBT2222A NPN Transistor","metaDescription":"STMicroelectronics MMBT2222A NPN transistor, 40V Vce, 600mA Ic, 350mW, SOT-23-3. Obsolete status, RoHS3 compliant. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Obsolete","categoryPath":["Discrete Semiconductors"],"specifications":{"Mfr":"STMicroelectronics","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Power - Max":"350 mW","Mounting Type":"Surface Mount","Package / Case":"TO-236-3, SC-59, SOT-23-3","Product Status":"Obsolete","Transistor Type":"NPN","lifecycle_stage":"eol_hot","Base Product Number":"MMBT2222","Operating Temperature":"150°C (TJ)","Frequency - Transition":"270MHz","Supplier Device Package":"SOT-23-3","Vce Saturation (Max) @ Ib, Ic":"1V @ 50mA, 500mA","Current - Collector (Ic) (Max)":"600 mA","Current - Collector Cutoff (Max)":"10nA (ICBO)","DC Current Gain (hFE) (Min) @ Ic, Vce":"100 @ 150mA, 10V","Voltage - Collector Emitter Breakdown (Max)":"40 V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3300","priceTiers":[{"qty":1,"price":"$0.13000","currency":"USD"},{"qty":10,"price":"$0.12300","currency":"USD"},{"qty":20,"price":"$0.11700","currency":"USD"},{"qty":50,"price":"$0.11000","currency":"USD"},{"qty":100,"price":"$0.10700","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/MMBT2222A/alternatives.json"},"ai":{"faq":[{"question":"What are the key electrical ratings of the MMBT2222A?","answer":"It is an NPN transistor with 40 V Vce breakdown, 600 mA maximum collector current, 350 mW power dissipation, a minimum hFE of 100 at 150 mA, and a 270 MHz transition frequency."},{"question":"Is the MMBT2222A RoHS compliant?","answer":"Yes — it is RoHS3 compliant, with no lead, cadmium, or other restricted substances above the threshold limits."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/MMBT2222A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/MMBT2222A when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-20T20:11:20.401Z","lastPublished":"2026-07-20T20:11:20.401Z","indexable":true}}