{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VO618A-2","brand":"Vishay","brandSlug":"vishay","productSlug":"VO618A-2","canonicalUrl":"https://icboms.com/vishay/VO618A-2","factsUrl":"https://icboms.com/api/mcp/products/VO618A-2","rawCanonicalId":null},"summary":{"shortDescription":"Vishay VO618A-2 optoisolator, 1-channel DC input, transistor output, 5300 Vrms isolation, 4-DIP through-hole package, -55°C to 110°C operating range, CTR 63% to 125% at 1 mA.","salesMarkdown":"## 5300 Vrms isolation in a 4-DIP through-hole package The Vishay VO618A-2 is a single-channel optoisolator with a DC input and a phototransistor output, housed in a standard 4-DIP (0.300\", 7.62mm) through-hole package. Its 5300 Vrms isolation rating is the key spec for any design requiring reinforced insulation between a low-voltage control side and a higher-voltage load side — think motor-drive IGBT gate drive, PLC digital inputs, or medical patient-isolation barriers. The through-hole DIP package suits manual assembly or sockets in prototype and low-volume production runs. ## CTR at 1 mA — what the 63% to 125% range means for your drive circuit The current transfer ratio is specified at a forward current of 1 mA, with a minimum of 63% and a maximum of 125%. That 63% floor is the number to design around: it tells you that with 1 mA through the LED, the output transistor can sink at least 630 µA of collector current. If your downstream logic input needs 1 mA to guarantee a low state, you need to increase the LED drive — or pick a part with a higher CTR min. The 125% ceiling matters for saturation margin: a high-CTR unit might saturate harder, but the 400 mV Vce(sat) max keeps the voltage drop predictable across the batch. ## Switching speed: 2 µs rise/fall, 3 µs turn-on, 2.3 µs turn-off Typical rise and fall times are 2 µs each, with turn-on at 3 µs and turn-off at 2.3 µs. That puts this part in the medium-speed class — fine for 10 kHz PWM or 115.2 kbps serial isolation, but not for high-speed gate drive or fast data links. The 80 V collector-emitter rating and 50 mA output current per channel give you headroom for driving small relays, DC solenoids, or logic-level loads directly. ## Temperature range and environment Rated for -55°C to 110°C operating temperature, the VO618A-2 covers industrial and outdoor equipment — motor drives, solar inverters, HVAC controllers — where the ambient inside the enclosure can hit 85°C and self-heating adds another 15-20°C. The 60 mA absolute-maximum LED forward current and 400 mV Vce(sat) max hold across the full range, though CTR typically drops at cold temperatures; factor in the 63% min at 25°C and derate further if your system must switch at -40°C. ## Lifecycle and compliance For dual-sourcing flexibility, the VO618A family includes pin-compatible CTR-graded variants — the VO618A-2 sits in the middle of the CTR range; the VO618A-3 offers a higher min CTR if your design needs more output current at the same 1 mA LED drive.","metaTitle":"VO618A-2 Optoisolator, 5300 Vrms, 4-DIP Through Hole","metaDescription":"VO618A-2 optoisolator from Vishay: 5300 Vrms isolation, transistor output, CTR 63-125% at 1 mA, -55°C to 110°C, 4-DIP through hole.","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":"5300Vrms","Vce Saturation (Max)":"400mV","Operating Temperature":"-55°C ~ 110°C","Rise / Fall Time (Typ)":"2µs, 2µs","Voltage - Output (Max)":"80V","Supplier Device Package":"4-DIP","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"125% @ 1mA","Current Transfer Ratio (Min)":"63% @ 1mA","Voltage - Forward (Vf) (Typ)":"1.1V","Turn On / Turn Off Time (Typ)":"3µs, 2.3µs","Current - DC Forward (If) (Max)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.53","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.54000","currency":"USD"},{"qty":10,"price":"$0.33000","currency":"USD"},{"qty":100,"price":"$0.18950","currency":"USD"},{"qty":1000,"price":"$0.14832","currency":"USD"},{"qty":2000,"price":"$0.13596","currency":"USD"},{"qty":5000,"price":"$0.12360","currency":"USD"},{"qty":10000,"price":"$0.11536","currency":"USD"},{"qty":25000,"price":"$0.11124","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e54efe308117a0f7b19d06b7396bb83e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is VO618A-2 a direct replacement for VO618A?","answer":"The VO618A-2 is a CTR-graded variant within the same VO618A family. It is pin-compatible and functionally identical to the base VO618A, but with a specified CTR range of 63% to 125% at 1 mA. If your design calls for a tighter or higher CTR, check the VO618A-3 (higher min) or the base VO618A (broader range)."},{"question":"What is the current transfer ratio of VO618A-2?","answer":"At 1 mA LED current, the output can sink between 630 µA and 1.25 mA of collector current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/VO618A-2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/VO618A-2 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}}