{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6N138V","brand":"onsemi","brandSlug":"onsemi","productSlug":"6N138V","canonicalUrl":"https://icboms.com/onsemi/6N138V","factsUrl":"https://icboms.com/api/mcp/products/6N138V","rawCanonicalId":null},"summary":{"shortDescription":"onsemi 6N138V optoisolator, 1-channel, DC input, Darlington with Base output, 300% CTR min, 2500Vrms isolation, Through Hole, 8-DIP (0.300\", 7.62mm).","salesMarkdown":"## Obsolete — last-time-buy sourcing channel The 6N138V is officially listed as Obsolete by onsemi. ## Darlington output and CTR floor The 6N138V uses a Darlington with Base output stage, delivering a minimum current transfer ratio (CTR) of 300% at a forward current of 1.6 mA. That CTR floor means the output can sink 60 mA while the input LED draws only a few milliamps — a common choice for logic-level isolation in PLC digital inputs or sensor interfaces where the load side needs higher current gain than a phototransistor provides. The switching times are 1.5 µs turn-on and 7 µs turn-off typical. For a 24 VDC PLC input module sampling at 1 kHz, the 7 µs turn-off is fast enough; above 50 kHz the output rise time starts to limit the data rate. ## Isolation and temperature range Rated for 2500 Vrms isolation between input and output — sufficient for basic insulation in industrial control equipment per IEC 60950-1 reinforced isolation requirements. The 8-DIP (0.300\", 7.62mm) through-hole package fits standard 0.100-inch pitch sockets or solders directly into a PCB with 0.300-inch row spacing.","metaTitle":"6N138V onsemi Optoisolator, 1Ch Darlington, 2500Vrms, DIP-8","metaDescription":"onsemi 6N138V optoisolator, 1-channel Darlington output, 300% CTR min at 1.6mA, 2500Vrms isolation, DIP-8. Obsolete — sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Optoisolators"],"specifications":{"Mfr":"onsemi","Series":"-","Package":"Bulk","Input Type":"DC","Output Type":"Darlington with Base","Mounting Type":"Through Hole","Package / Case":"8-DIP (0.300\\\", 7.62mm)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Number of Channels":"1","Base Product Number":"6N138","Voltage - Isolation":"2500Vrms","Vce Saturation (Max)":"-","Operating Temperature":"-40°C ~ 85°C","Rise / Fall Time (Typ)":"-","Voltage - Output (Max)":"7V","Supplier Device Package":"8-DIP","Current - Output / Channel":"60mA","Current Transfer Ratio (Max)":"-","Current Transfer Ratio (Min)":"300% @ 1.6mA","Voltage - Forward (Vf) (Typ)":"1.3V","Turn On / Turn Off Time (Typ)":"1.5µs, 7µs","Current - DC Forward (If) (Max)":"20 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.0800","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b62d34c60f4ce21d8bd4b22e173d60f9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 6N138V?","answer":"The 6N138 (without the V suffix) shares the same die and pinout but may carry a different RoHS or lead-free status — verify the date code and compliance documentation before substituting. For new designs, consider a current-production single-channel Darlington optoisolator in DIP-8 from onsemi or a second source, but expect a board spin if the pinout differs."},{"question":"What compliance documentation does onsemi provide for 6N138V?","answer":"The evidence does not list specific compliance certifications (RoHS, REACH, UL, IEC) for this part. As an Obsolete device, the original onsemi datasheet and PCN documents are the authoritative source — request those at RFQ time. The part is not marked as AEC-Q101 qualified."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/6N138V","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/6N138V when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:24:17.355Z","lastPublished":"2026-07-21T06:24:17.355Z","indexable":true}}