{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VOM617A-3T","brand":"Vishay","brandSlug":"vishay","productSlug":"VOM617A-3T","canonicalUrl":"https://icboms.com/vishay/VOM617A-3T","factsUrl":"https://icboms.com/api/mcp/products/VOM617A-3T","rawCanonicalId":null},"summary":{"shortDescription":"Vishay VOM617A-3T transistor output optocoupler, 3750Vrms isolation, 1 channel, DC input, 4-SMD gull wing package, 100-200% CTR at 5mA.","salesMarkdown":"## Isolation and signal transfer in a 4-SOP package The VOM617A-3T is a single-channel transistor-output optocoupler from Vishay, built for galvanic isolation between a DC input and a transistor output. Its 3750Vrms isolation rating covers basic functional isolation in mains-powered equipment — think PSU feedback loops, digital input modules on a 24V PLC bus, or driving a low-side switch from a controller that shares a ground with a noisy motor drive. The 4-SOP (small-outline package with gull-wing leads) footprint matches the standard SOIC-4 land pattern, so it drops onto a board without a special pad layout. The package is surface-mount, and it ships on tape-and-reel for automated assembly or cut-tape for prototype runs. ## What the CTR range means for your circuit margin Current transfer ratio is the headline spec that decides whether the opto works in your circuit. The VOM617A-3T guarantees a CTR of 100% to 200% at a forward current of 5 mA. That means at 5 mA in, the output transistor can sink at least 5 mA and at most 10 mA — a tight bin that gives the designer a predictable min-max window for the pull-up resistor and the downstream logic threshold. A wider CTR bin (like the 50-600% on a generic 4N35) forces you to over-design the collector load to handle the gain spread; this part's 2:1 ratio keeps the resistor value in a tighter band. The output transistor is rated for 80 V collector-emitter and 50 mA continuous current. ## Temperature range and switching speed Rated for -55°C to +110°C operating ambient, this opto covers industrial and commercial environments without a temperature grade downgrade. The 3 µs typical rise and fall times and 6 µs / 4 µs turn-on / turn-off times place it in the medium-speed class — fine for 10-50 kHz switching or status feedback, but not for high-speed isolated data links. Forward voltage is 1.1 V typical at rated current, with an absolute maximum forward current of 60 mA. The input is a simple LED — no logic-level threshold, so the series resistor sets the If and therefore the CTR operating point. Design the resistor for 5 mA forward current to land in the middle of the CTR spec window.","metaTitle":"Vishay VOM617A-3T Optoisolator, 3750Vrms, 4-SOP","metaDescription":"Vishay VOM617A-3T transistor output optocoupler, 3750Vrms isolation, 100-200% CTR at 5mA, -55°C to +110°C. Active, ROHS3 compliant. Source through RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Input Type":"DC","Output Type":"Transistor","Mounting Type":"Surface Mount","Package / Case":"4-SMD, Gull Wing","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"3750Vrms","Vce Saturation (Max)":"400mV","Operating Temperature":"-55°C ~ 110°C","Rise / Fall Time (Typ)":"3µs, 3µs","Voltage - Output (Max)":"80V","Supplier Device Package":"4-SOP","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"200% @ 5mA","Current Transfer Ratio (Min)":"100% @ 5mA","Voltage - Forward (Vf) (Typ)":"1.1V","Turn On / Turn Off Time (Typ)":"6µs, 4µs","Current - DC Forward (If) (Max)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.6","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.60000","currency":"USD"},{"qty":10,"price":"$0.37100","currency":"USD"},{"qty":100,"price":"$0.21320","currency":"USD"},{"qty":1000,"price":"$0.16686","currency":"USD"},{"qty":3000,"price":"$0.15295","currency":"USD"},{"qty":6000,"price":"$0.13905","currency":"USD"},{"qty":15000,"price":"$0.12978","currency":"USD"},{"qty":30000,"price":"$0.12515","currency":"USD"},{"qty":75000,"price":"$0.12051","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/7a0741c70b9b9bf17ef3c0f0641c144f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the current transfer ratio (CTR) of the VOM617A-3T?","answer":"The CTR is specified as 100% minimum and 200% maximum at a forward current of 5 mA. This tight 2:1 ratio simplifies pull-up resistor selection compared to wider-bin optocouplers."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/VOM617A-3T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/VOM617A-3T 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}}