{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4N28TVM","brand":"onsemi","brandSlug":"onsemi","productSlug":"4N28TVM","canonicalUrl":"https://icboms.com/onsemi/4N28TVM","factsUrl":"https://icboms.com/api/mcp/products/4N28TVM","rawCanonicalId":null},"summary":{"shortDescription":"onsemi 4N28TVM single-channel optoisolator, DC input, transistor with base output, 4170Vrms isolation, 6-DIP (0.400\", 10.16mm) through-hole package, Bulk.","salesMarkdown":"## Last-buy lifecycle and sourcing The 4N28TVM carries a Last Buy status from onsemi — the manufacturer has announced end-of-life, and remaining inventory is being drawn down. Expect lot-specific date codes and sealed-reel or bulk packaging as available. ## 4170Vrms isolation and switching performance Rated for 4170Vrms isolation between input and output — this is a reinforced-grade isolation barrier for galvanic separation in industrial controls, motor drives, and power-supply feedback loops where the primary side must be kept electrically isolated from the secondary control logic. Typical turn-on and turn-off times are 2 µs each, which supports switching up to roughly 250 kHz in a digital isolator role — adequate for most PLC input modules, relay drivers, and isolated serial interfaces. ## CTR floor and drive requirements Minimum current transfer ratio is 10% at 10 mA forward current — meaning with 10 mA through the LED, the output transistor can sink at least 1 mA. This sets the minimum load resistance and the worst-case drive margin for the downstream logic or relay coil. Forward voltage is 1.18V typical, and the LED can handle up to 60 mA continuous DC forward current — the 10% CTR floor is specified at 10 mA, so the LED drive current should be set between 10 mA and 60 mA to guarantee the CTR across temperature and device spread. ## Through-hole DIP package and temperature grade Housed in a 6-pin DIP with 0.400-inch (10.16 mm) body width — the wider DIP footprint provides extra creepage distance across the package surface, supporting the 4170Vrms isolation rating. The through-hole mounting suits hand-assembly or wave-solder processes in low-volume or prototype builds. The output transistor saturates at 500 mV maximum (Vce), keeping power dissipation low in the on-state.","metaTitle":"onsemi 4N28TVM Optoisolator, 4170Vrms, 6-DIP, Last Buy","metaDescription":"onsemi 4N28TVM single-channel optoisolator, 4170Vrms isolation, 10% min CTR, 6-DIP through hole. Last Buy lifecycle — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Last Buy","categoryPath":["Optoisolators"],"specifications":{"Mfr":"onsemi","Series":"-","Package":"Bulk","Input Type":"DC","Output Type":"Transistor with Base","Mounting Type":"Through Hole","Package / Case":"6-DIP (0.400\\\", 10.16mm)","Product Status":"Last Time Buy","lifecycle_stage":"eol_hot","Number of Channels":"1","Base Product Number":"4N28","Voltage - Isolation":"4170Vrms","Vce Saturation (Max)":"500mV","Operating Temperature":"-40°C ~ 100°C","Rise / Fall Time (Typ)":"-","Voltage - Output (Max)":"30V","Supplier Device Package":"6-DIP","Current - Output / Channel":"-","Current Transfer Ratio (Max)":"-","Current Transfer Ratio (Min)":"10% @ 10mA","Voltage - Forward (Vf) (Typ)":"1.18V","Turn On / Turn Off Time (Typ)":"2µs, 2µs","Current - DC Forward (If) (Max)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.3256","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d7db4dc53d56bf7e534658a700fb47e3.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/4N28TVM/alternatives.json"},"ai":{"faq":[{"question":"How can I order 4N28TVM or check availability?","answer":"The 4N28TVM is in Last Buy status from onsemi. It is sourced through independent distribution — submit an RFQ for current pricing and lot availability. Quantities are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/4N28TVM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/4N28TVM when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:22:01.501Z","lastPublished":"2026-07-21T06:22:01.501Z","indexable":true}}