{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TCET1106G","brand":"Vishay","brandSlug":"vishay","productSlug":"TCET1106G","canonicalUrl":"https://icboms.com/vishay/TCET1106G","factsUrl":"https://icboms.com/api/mcp/products/TCET1106G","rawCanonicalId":null},"summary":{"shortDescription":"Vishay TCET1106G transistor output optocoupler, 1-channel, DC input, 5000Vrms isolation, 100-300% CTR at 5mA, 4-DIP through-hole package, -40°C to 100°C.","salesMarkdown":"The TCET1106G: That isolation voltage is tested per the 4-DIP package's creepage and clearance — it certifies the part for reinforced insulation in mains-connected circuits where a fault on the primary side must not reach the secondary. With a DC input and a phototransistor output, this is the workhorse topology for logic-level signal isolation, PLC digital inputs, and isolated feedback in switch-mode power supplies. ## CTR range and switching speed — the two numbers that decide fit The current transfer ratio (CTR) is specified as 100% minimum and 300% maximum at If = 5 mA. A 100% floor means the output transistor can sink at least as much current as the LED draws — so a 5 mA LED drive guarantees at least 5 mA of output drive, enough to pull a TTL or CMOS input low through a pull-up resistor. The 300% ceiling tells you the gain spread across temperature and manufacturing; a design that works with a 100% CTR part will saturate the output harder with a 300% unit, but the turn-off time will be slower because of stored base charge. Switching speed is characterised two ways: rise/fall times of 3 µs and 4.7 µs typical, and turn-on/turn-off times of 6 µs and 5 µs typical. These numbers set the practical data rate at roughly 50-100 kbit/s for NRZ signalling — fast enough for 9600 baud serial, slow for CAN or SPI. For PWM dimming or relay drive at a few hundred Hz, the 6 µs turn-on delay is negligible. The 70 V output breakdown and 50 mA continuous output current mean the phototransistor can drive a small relay coil directly or interface to a 24 V industrial logic rail without a level shifter. ## Temperature range and package — board-fit constraints The 4-DIP (0.400-inch, 10.16 mm pitch) through-hole package is a standard 4-pin DIP footprint with 2.54 mm pin spacing — it drops into a socket or solders directly into a plated-through-hole PCB. The 1.25 V typical forward voltage at 5-10 mA LED current is standard for an infrared LED; the 60 mA absolute-maximum forward current gives headroom for pulsed operation above the 5 mA test condition. ## Active lifecycle and compliance documentation The part ships in Tube packaging, the standard through-hole DIP format for pick-and-place or manual assembly. For EU-market shipments, the ROHS3 declaration covers the ten restricted substances including the four phthalates added in the 2015 amendment.","metaTitle":"Vishay TCET1106G Optocoupler, 5000Vrms, 4-DIP","metaDescription":"Vishay TCET1106G transistor output optocoupler, 5000Vrms isolation, 100-300% CTR at 5mA, 4-DIP through-hole. Active production, ROHS3. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Input Type":"DC","Output Type":"Transistor","Mounting Type":"Through Hole","Package / Case":"4-DIP (0.400\\\", 10.16mm)","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)":"300% @ 5mA","Current Transfer Ratio (Min)":"100% @ 5mA","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":"$0.55","priceTiers":[{"qty":1,"price":"$0.55000","currency":"USD"},{"qty":10,"price":"$0.36200","currency":"USD"},{"qty":100,"price":"$0.23920","currency":"USD"},{"qty":1000,"price":"$0.18466","currency":"USD"},{"qty":2000,"price":"$0.16686","currency":"USD"},{"qty":5000,"price":"$0.15574","currency":"USD"},{"qty":10000,"price":"$0.15017","currency":"USD"},{"qty":25000,"price":"$0.14795","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c9931f06b9043d6a7d74bdd97dac7943.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TCET1106G/alternatives.json"},"ai":{"faq":[{"question":"What is the TCET1106G's input type and output type?","answer":"The input type is DC (the LED is driven by a DC current, not an AC signal), and the output is a phototransistor. This is the standard topology for DC-coupled isolation in digital signal paths."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/TCET1106G","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/TCET1106G 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}}