{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"SFH618A-5X007T","brand":"Vishay","brandSlug":"vishay","productSlug":"SFH618A-5X007T","canonicalUrl":"https://icboms.com/vishay/SFH618A-5X007T","factsUrl":"https://icboms.com/api/mcp/products/SFH618A-5X007T","rawCanonicalId":null},"summary":{"shortDescription":"Vishay SFH618A-5X007T optoisolator, single-channel DC-input transistor output, 5300Vrms isolation, 250-500% CTR at 1mA, 55V output max, 50mA output, -55°C to 100°C, 4-SMD gull wing package, Tape & Reel.","salesMarkdown":"## What this opto does in the assembly The Vishay SFH618A-5X007T is a single-channel DC-input phototransistor optoisolator in a 4-SMD gull wing package. It provides 5300Vrms galvanic isolation between the input LED and output phototransistor, with a current transfer ratio between 250% and 500% at a forward current of 1mA. The output transistor can handle up to 55V and 50mA, with a maximum Vce saturation of 400mV. This is the part you reach for when you need to pass a DC logic-level signal across a safety isolation barrier in a surface-mount assembly — think motor drive feedback, PLC digital inputs, or isolated power-supply error amplifiers. ## 5300Vrms isolation — what it buys you The 5300Vrms isolation rating is the headline safety spec. For a PCB layout engineer, that number drives the creepage and clearance distances under IEC 60950 or IEC 62368 — you need at least 8mm creepage between primary and secondary for reinforced insulation at 250V working voltage. The 4-SMD gull wing package gives you the surface-mount footprint with enough pin spacing to meet that. For the component engineer, this is a reinforced-isolation-class device suitable for mains-isolated circuits, not just basic insulation. ## CTR spread and the 1mA test point The 250% to 500% CTR range is specified at 1mA forward current, not the usual 5mA or 10mA. That means this opto is designed to work with low-drive logic outputs — a 3.3V GPIO with a 2.2k series resistor delivers about 1.5mA, well within the 60mA absolute max forward current. The wide CTR spread means the test engineer needs to verify the minimum CTR at the operating temperature, because the phototransistor gain drops as the junction warms up. At -55°C the CTR will be at the high end; at 100°C it'll be at the low end. Plan your pull-up resistor value around the minimum CTR at the worst-case temperature. ## Switching speed — slow but predictable Rise time is 3.5µs typical, fall time 5µs typical, turn-on 6µs, turn-off 5.5µs. That is slow — this is not a part for high-speed serial isolation. For the firmware engineer, budget at least 10µs of propagation delay in any feedback loop that goes through this opto. It works fine for 100kHz PWM signals, DC state sensing, or relay-coil drive. If you need faster, look at the logic-output or high-speed opto families; this one is for the slow-and-reliable jobs where isolation integrity matters more than bandwidth. ## Temperature range and field service Rated for -55°C to 100°C operating temperature. If your assembly sits near a hot power stage or inside a sealed enclosure that can hit 105°C, this part is outside its rated range. For the field-service technician: this is a surface-mount part with gull-wing leads, so it can be swapped on site with a hot-air station and some solder wick. The package marking should be legible under magnification, but the 4-SMD body is small — bring a headset magnifier. ## Lifecycle and sourcing posture It is ROHS3 compliant.","metaTitle":"SFH618A-5X007T Optoisolator, 5300Vrms, 4-SMD Gull Wing","metaDescription":"SFH618A-5X007T Vishay optoisolator, 5300Vrms isolation, transistor output, 250-500% CTR at 1mA, -55°C to 100°C, 4-SMD gull wing. Active lifecycle.","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-SMD, Gull Wing","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"5300Vrms","Vce Saturation (Max)":"400mV","Operating Temperature":"-55°C ~ 100°C","Rise / Fall Time (Typ)":"3.5µs, 5µs","Voltage - Output (Max)":"55V","Supplier Device Package":"4-SMD","Current - Output / Channel":"50mA","Current Transfer Ratio (Max)":"500% @ 1mA","Current Transfer Ratio (Min)":"250% @ 1mA","Voltage - Forward (Vf) (Typ)":"1.1V","Turn On / Turn Off Time (Typ)":"6µs, 5.5µs","Current - DC Forward (If) (Max)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.14","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.14000","currency":"USD"},{"qty":10,"price":"$0.72200","currency":"USD"},{"qty":100,"price":"$0.53440","currency":"USD"},{"qty":500,"price":"$0.49106","currency":"USD"},{"qty":1000,"price":"$0.40440","currency":"USD"},{"qty":2000,"price":"$0.38419","currency":"USD"},{"qty":5000,"price":"$0.37552","currency":"USD"},{"qty":10000,"price":"$0.36685","currency":"USD"},{"qty":25000,"price":"$0.36108","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4bb15ce016d1cbb8f2e268ef9c695016.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum collector current of the SFH618A-5X007T?","answer":"The output transistor is rated for 50mA continuous output current per channel. The maximum collector-emitter voltage is 55V."},{"question":"Is the SFH618A-5X007T equivalent to a 4N35?","answer":"Both are single-channel phototransistor optoisolators, but they are not direct drop-in equivalents. The SFH618A-5X007T is in a 4-SMD gull wing surface-mount package, while the 4N35 is a through-hole DIP-6. The SFH618A-5X007T also has a higher isolation rating at 5300Vrms versus the 4N35's typical 3550Vrms, and its CTR is specified at 1mA forward current rather than 10mA. If you need a surface-mount part with reinforced isolation, the SFH618A-5X007T is the better choice; if you need a through-hole replacement, the 4N35 family is a different package class."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/SFH618A-5X007T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/SFH618A-5X007T 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}}