{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"K815P","brand":"Vishay","brandSlug":"vishay","productSlug":"K815P","canonicalUrl":"https://icboms.com/vishay/K815P","factsUrl":"https://icboms.com/api/mcp/products/K815P","rawCanonicalId":null},"summary":{"shortDescription":"Vishay K815P Darlington optocoupler, 1-channel, 5300 Vrms isolation, 600% min CTR at 1 mA, 80 mA output, 4-DIP through-hole, tube.","salesMarkdown":"## Active production — no last-time-buy pressure The K815P: The ROHS3 compliance covers EU and similar markets without exemption-based restrictions. ## Darlington output — 600% CTR at 1 mA drive The Darlington output stage delivers a minimum current transfer ratio of 600% at just 1 mA forward current. That means a 1 mA LED drive produces at least 6 mA at the output — enough to saturate the transistor and switch a 5 V logic input or a 24 V PLC digital input without an external pull-up transistor. The 80 mA continuous output rating handles relay coils and small solenoids directly. Vce saturation is 100 mV max at the rated output current — the transistor drops under 0.1 V when fully on, keeping power dissipation low in the 4-DIP package. ## 5.3 kVrms isolation — industrial and mains-referenced circuits The 5300 Vrms isolation rating provides reinforced insulation for separating low-voltage control logic from mains-voltage power circuits. This covers IEC 60950-1 / IEC 62368-1 reinforced insulation requirements for 250 Vrms working voltage. The 4-DIP package with 7.62 mm pin pitch maintains the creepage distance needed for that isolation level across the PCB. Operating temperature spans -40°C to +100°C, covering industrial enclosures and outdoor telecom cabinets without derating at the high end. ## Switching speed — 300 µs rise, 250 µs turn-off Rise time is 300 µs typical; turn-off time is 250 µs typical. This optocoupler is suited for DC signal isolation and low-frequency AC line sensing (50/60 Hz zero-cross detection), not for high-speed data or PWM gate drive above a few hundred hertz. The 300 µs rise means the output takes about 0.3 ms to go from low to high — a 1 kHz square wave would be heavily distorted. Input is DC-coupled — the LED forward voltage is 1.2 V typical with a maximum forward current of 60 mA. A series resistor from the MCU GPIO or PLC output sets the LED current; 1 mA to 10 mA is the practical range for the 600% CTR. ## Package and board-fit — 4-DIP through-hole The supplier device package is 4-DIP. Through-hole mounting means the part inserts into a drilled PCB and is wave-soldered or hand-soldered — no reflow profile needed. The tube packaging protects the leads during handling and storage.","metaTitle":"Vishay K815P Optocoupler, 5.3 kVrms, Darlington, 4-DIP","metaDescription":"Vishay K815P Darlington optocoupler, 5300 Vrms isolation, 600% min CTR at 1 mA, 80 mA output, 4-DIP through-hole. Active production, ROHS3. Quoted to order.","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":"Darlington","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)":"100mV","Operating Temperature":"-40°C ~ 100°C","Rise / Fall Time (Typ)":"300µs, -","Voltage - Output (Max)":"35V","Supplier Device Package":"4-DIP","Current - Output / Channel":"80mA","Current Transfer Ratio (Min)":"600% @ 1mA","Voltage - Forward (Vf) (Typ)":"1.2V","Turn On / Turn Off Time (Typ)":"-, 250µs","Current - DC Forward (If) (Max)":"60 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.73","priceTiers":[{"qty":1,"price":"$0.73000","currency":"USD"},{"qty":10,"price":"$0.47500","currency":"USD"},{"qty":100,"price":"$0.31120","currency":"USD"},{"qty":1000,"price":"$0.24566","currency":"USD"},{"qty":2000,"price":"$0.22928","currency":"USD"},{"qty":5000,"price":"$0.22109","currency":"USD"},{"qty":10000,"price":"$0.21781","currency":"USD"},{"qty":25000,"price":"$0.21290","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c358bd16ae5e98118c1c25d6ac2d913d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/K815P/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to K815P?","answer":"The K815P is a Vishay-specific order code. The 4-DIP Darlington optocoupler footprint is standard across the industry — parts with the same 0.300-inch pitch and 4-pin layout from other manufacturers may fit, but electrical parameters (CTR, isolation, switching speed) must be verified against the BOM requirements."},{"question":"What compliance documentation does Vishay provide for K815P?","answer":"Vishay certifies the K815P as ROHS3 compliant, meaning no restricted substances above threshold limits per EU RoHS Directive 2011/65/EU and its amendment 2015/863. No UL, CSA, or VDE approval numbers are listed in the available specification data."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/vishay/K815P","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/vishay/K815P 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}}