{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"H11B1M","brand":"onsemi","brandSlug":"onsemi","productSlug":"H11B1M","canonicalUrl":"https://icboms.com/onsemi/H11B1M","factsUrl":"https://icboms.com/api/mcp/products/H11B1M","rawCanonicalId":null},"summary":{"shortDescription":"onsemi H11B1M, single-channel DC-input optoisolator, Darlington with base output, 4170 Vrms isolation, 500% minimum CTR at 1 mA, 6-DIP through-hole package, -40°C to 100°C.","salesMarkdown":"The H11B1M is a single-channel optoisolator from onsemi with a Darlington transistor output that includes a base terminal — this gives you the option to tailor the switching threshold with an external resistor, something a standard Darlington opto lacks. Its 4170 Vrms isolation rating covers industrial motor drives, PLC I/O modules, and medical equipment where galvanic isolation between control and power domains is non-negotiable. The 500% minimum current transfer ratio at just 1 mA forward current means the LED side draws very little from the microcontroller GPIO — a 3.3 V logic output can drive it directly through a series resistor, saving a transistor stage. ## Switching speed and saturation voltage — timing and drive margin Turn-on time is 25 µs typical, turn-off 18 µs typical — this is not a high-speed isolator; it suits 10 kHz and below switching, relay drivers, and DC signal detection where the 25 µs delay is well within the system timing budget. Vce saturation is 1 V maximum at the rated output current, which keeps the Darlington drop low enough to drive a 5 V relay coil or a 24 V PLC input without exceeding the 30 V output maximum. The 150 mA continuous output current per channel is enough for small solenoids, indicator LEDs, or logic-level shifters — but for loads above 100 mA, check the thermal derating in the 6-DIP package. ## Active production, through-hole package — sourcing posture This is a production part you can commit to a BOM without obsolescence risk.","metaTitle":"H11B1M onsemi Optoisolator: 4170Vrms, Darlington Output","metaDescription":"onsemi H11B1M optoisolator: 4170Vrms isolation, Darlington with base output, 500% min CTR at 1mA, -40°C to 100°C, 6-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":"Darlington with Base","Mounting Type":"Through Hole","Package / Case":"6-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"4170Vrms","Vce Saturation (Max)":"1V","Operating Temperature":"-40°C ~ 100°C","Voltage - Output (Max)":"30V","Supplier Device Package":"6-DIP","Current - Output / Channel":"150mA","Current Transfer Ratio (Min)":"500% @ 1mA","Voltage - Forward (Vf) (Typ)":"1.2V","Turn On / Turn Off Time (Typ)":"25µs, 18µs","Current - DC Forward (If) (Max)":"80 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.72","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$0.72000","currency":"USD"},{"qty":10,"price":"$0.46700","currency":"USD"},{"qty":100,"price":"$0.30630","currency":"USD"},{"qty":1000,"price":"$0.24179","currency":"USD"},{"qty":2000,"price":"$0.22568","currency":"USD"},{"qty":5000,"price":"$0.21761","currency":"USD"},{"qty":10000,"price":"$0.21439","currency":"USD"},{"qty":25000,"price":"$0.20955","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/3b7a0e595c13b969737948a1da9a0357.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the H11B1M RoHS compliant?","answer":"Yes, the H11B1M is ROHS3 compliant per onsemi's listing."},{"question":"What is the closest functional second-source to the H11B1M?","answer":"The 4N29M is a close parametric match: same DC input, Darlington with base output, 4170 Vrms isolation, 150 mA output current, and 6-DIP through-hole package. Key difference: the 4N29M has a faster turn-on time (5 µs typical) but a slower turn-off (40 µs max) versus the H11B1M's 25 µs on / 18 µs off typical. The 4N32VM is also similar but with a 100 µs max turn-off. For a non-Darlington alternative, the H11A1TVM uses a transistor output with 400 mV saturation and 2 µs switching, but its CTR is much lower."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/H11B1M","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/H11B1M 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}}