{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VOS618A-8X001T","brand":"Vishay","brandSlug":"vishay","productSlug":"VOS618A-8X001T","canonicalUrl":"https://icboms.com/vishay/VOS618A-8X001T","factsUrl":"https://icboms.com/api/mcp/products/VOS618A-8X001T","rawCanonicalId":null},"summary":{"shortDescription":"Vishay VOS618A-8X001T, single-channel DC-input phototransistor optocoupler, 3750Vrms isolation, 130%–260% CTR at 1 mA, 4-SOIC surface-mount package, -55°C to 110°C operating range.","salesMarkdown":"## 3750Vrms isolation in a 4-SOIC body The VOS618A-8X001T is a single-channel phototransistor optocoupler from Vishay, delivering 3750Vrms of galvanic isolation in a compact 4-SOIC package. The surface-mount 4-SSOP footprint (0.173\" body width) fits designs where board space is tight but a reinforced isolation barrier is still required. Input is DC-driven with a typical forward voltage of 1.1V and a maximum forward current of 50 mA. The output transistor can handle up to 80V and 50 mA continuous, with a saturation voltage ceiling of 400 mV — enough margin to drive a logic input or a small relay coil directly. ## CTR range and switching speed for logic interface Current transfer ratio is specified at 1 mA input: minimum 130%, maximum 260%. This 2:1 spread means the designer must verify the output transistor saturates at the lowest CTR across temperature and ageing. Typical rise and fall times are 5 µs and 7 µs, with turn-on and turn-off times of 5 µs and 8 µs — adequate for 10–100 kHz isolated signalling but not for high-speed data links. The -55°C to 110°C operating range covers industrial and automotive under-hood environments. At the cold end, the LED output drops and CTR falls; at the hot end, leakage current in the phototransistor rises. The datasheet's CTR vs temperature curve (not reproduced here) is the tool to check worst-case drive margin. ## Active production, ROHS3, tape-and-reel ready The part is offered in Tape & Reel (TR) and Cut Tape (CT) options, which aligns with both prototype and volume assembly workflows. Sourcing is straightforward: we quote to order against your BOM quantity. Confirm the 4-SOIC footprint matches your PCB land pattern — the 0.173\" body width is narrower than a standard SOIC-8, so the pad layout is specific to this package.","metaTitle":"VOS618A-8X001T Vishay Optoisolator – 3750Vrms, 4-SOIC","metaDescription":"Vishay VOS618A-8X001T single-channel phototransistor optocoupler, 3750Vrms isolation, 130-260% CTR at 1mA, -55°C to 110°C, 4-SOIC SMD. Active production, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Input Type":"DC","Output Type":"Transistor","Mounting Type":"Surface Mount","Package / Case":"4-SOIC (0.173\\\", 4.40mm Width)","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)":"5µs, 7µs","Voltage - Output (Max)":"80V","Supplier Device Package":"4-SSOP","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"260% @ 1mA","Current Transfer Ratio (Min)":"130% @ 1mA","Voltage - Forward (Vf) (Typ)":"1.1V","Turn On / Turn Off Time (Typ)":"5µs, 8µs","Current - DC Forward (If) (Max)":"50 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.62","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.62000","currency":"USD"},{"qty":10,"price":"$0.38400","currency":"USD"},{"qty":100,"price":"$0.22070","currency":"USD"},{"qty":1000,"price":"$0.17271","currency":"USD"},{"qty":3000,"price":"$0.15832","currency":"USD"},{"qty":6000,"price":"$0.14393","currency":"USD"},{"qty":15000,"price":"$0.13433","currency":"USD"},{"qty":30000,"price":"$0.12953","currency":"USD"},{"qty":75000,"price":"$0.12473","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9e18ade64f7506aeda7401d719d8a650.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is VOS618A-8X001T compatible with 3.3V logic?","answer":"Yes, with margin. The output transistor can sink up to 50 mA and saturates below 400 mV, so it can pull a 3.3V rail low through a pull-up resistor. The CTR at 1 mA input (130% min) means the LED side needs only about 1 mA from a 3.3V GPIO through a series resistor. Confirm the LED forward voltage (1.1V typ) and the GPIO drive capability at that current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/VOS618A-8X001T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/VOS618A-8X001T 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}}