{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TCET1204","brand":"Vishay","brandSlug":"vishay","productSlug":"TCET1204","canonicalUrl":"https://icboms.com/vishay/TCET1204","factsUrl":"https://icboms.com/api/mcp/products/TCET1204","rawCanonicalId":null},"summary":{"shortDescription":"Vishay TCET1204 optocoupler, 1-channel DC input, transistor output, 5000Vrms isolation, 4-DIP through-hole package, 160-320% CTR at 10mA, -40°C to 100°C, 70V output max, 50mA output current.","salesMarkdown":"## Galvanic isolation in a 4-DIP through-hole package The Vishay TCET1204 is a single-channel optocoupler with a DC-input phototransistor output, rated for 5000Vrms isolation between input and output. It comes in a 4-DIP through-hole package (0.300\", 7.62mm pitch), the traditional form factor for industrial control, PLC I/O modules, and motor-drive feedback interfaces where socketed or hand-solderable serviceability matters. ## CTR range and drive margin Current transfer ratio spans 160% minimum to 320% maximum, both specified at 10mA forward current. That 2:1 min-to-max spread is typical for a standard-transistor-output coupler and means the designer sizes the input LED current and output pull-up resistor to guarantee saturation at the low end while avoiding saturation delay at the high end. A 10mA LED drive with a 10kΩ collector load on a 5V rail leaves comfortable margin across temperature and device-to-device variation. ## Switching speed and output ratings Turn-on time is 6µs typical, turn-off 5µs typical; rise and fall times are 3µs and 4.7µs respectively. These are adequate for 10-100kHz switching in isolated gate drives, AC mains zero-cross detection, and status-feedback signals. The output transistor handles up to 70V and 50mA continuous, with a Vce saturation maximum of 300mV at rated current — clean logic-level signaling without an extra buffer stage. For a BOM planner, this means the part is a safe design-in choice for production runs through at least the next several years, and the through-hole DIP package stores well on the shelf without moisture-sensitivity bake requirements — just standard ESD handling.","metaTitle":"TCET1204 Optocoupler, 5kV Isolation, 4-DIP Through Hole","metaDescription":"Vishay TCET1204 optocoupler with 5000Vrms isolation, transistor output, 160-320% CTR at 10mA, -40°C to 100°C, 4-DIP through-hole. Active lifecycle, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tube","Input Type":"DC","Output Type":"Transistor","Mounting Type":"Through Hole","Package / Case":"4-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"5000Vrms","Vce Saturation (Max)":"300mV","Operating Temperature":"-40°C ~ 100°C","Rise / Fall Time (Typ)":"3µs, 4.7µs","Voltage - Output (Max)":"70V","Supplier Device Package":"4-DIP","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"320% @ 10mA","Current Transfer Ratio (Min)":"160% @ 10mA","Voltage - Forward (Vf) (Typ)":"1.25V","Turn On / Turn Off Time (Typ)":"6µs, 5µs","Current - DC Forward (If) (Max)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.56","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.56000","currency":"USD"},{"qty":10,"price":"$0.37100","currency":"USD"},{"qty":100,"price":"$0.24540","currency":"USD"},{"qty":1000,"price":"$0.18946","currency":"USD"},{"qty":2000,"price":"$0.17120","currency":"USD"},{"qty":5000,"price":"$0.15978","currency":"USD"},{"qty":10000,"price":"$0.15408","currency":"USD"},{"qty":25000,"price":"$0.15179","currency":"USD"}]},"links":{"datasheetUrl":"https://www.vishay.com/docs/83501/tcet1200.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the current transfer ratio (CTR) of TCET1204?","answer":"CTR is specified at 160% minimum and 320% maximum, both measured at 10mA forward current. This range is typical for a standard transistor-output optocoupler."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/TCET1204","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/TCET1204 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}