{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"4N28300","brand":"onsemi","brandSlug":"onsemi","productSlug":"4N28300","canonicalUrl":"https://icboms.com/onsemi/4N28300","factsUrl":"https://icboms.com/api/mcp/products/4N28300","rawCanonicalId":null},"summary":{"shortDescription":"onsemi 4N28300 optoisolator, 1-channel DC input, transistor with base output, 5300Vrms isolation, 6-DIP (0.300\", 7.62mm) through hole, tube.","salesMarkdown":"The 4N28300 is listed as obsolete by onsemi. Quantities are lot-specific; availability and pricing confirmed at RFQ. No pin-compatible drop-in replacement from onsemi is documented. ## 5300Vrms isolation, 10% CTR at 10 mA Rated for 5300Vrms isolation — this is the galvanic barrier rating for basic or reinforced insulation in a 6-DIP package. The 10% minimum current transfer ratio at 10 mA forward current means the output transistor saturates reliably when the LED is driven at that level. Typical turn-on and turn-off times are 2 µs each, which suits medium-speed digital isolation or feedback in a switched-mode supply — the 30V Vce(max) output accommodates common control rails. The 1.18V typical forward voltage at 10 mA is standard for a GaAs IR LED. ## 6-DIP through-hole package Housed in a 6-DIP (0.300\", 7.62mm) through-hole package with a 500mV max Vce saturation. The tube packaging is standard for DIP optoisolators — the 7.62mm body width is the common DIP-6 footprint.","metaTitle":"onsemi 4N28300 Optoisolator, 5300Vrms, 6-DIP, Obsolete","metaDescription":"onsemi 4N28300 obsolete optoisolator, 1-ch DC input, transistor output, 5300Vrms isolation, 6-DIP. Sourced to order against RFQ through independent channels.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Optoisolators"],"specifications":{"Mfr":"onsemi","Series":"-","Package":"Tube","Input Type":"DC","Output Type":"Transistor with Base","Mounting Type":"Through Hole","Package / Case":"6-DIP (0.300\\\", 7.62mm)","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Number of Channels":"1","Base Product Number":"4N28","Voltage - Isolation":"5300Vrms","Vce Saturation (Max)":"500mV","Operating Temperature":"-55°C ~ 100°C","Rise / Fall Time (Typ)":"-","Voltage - Output (Max)":"30V","Supplier Device Package":"6-DIP","Current - Output / Channel":"-","Current Transfer Ratio (Max)":"-","Current Transfer Ratio (Min)":"10% @ 10mA","Voltage - Forward (Vf) (Typ)":"1.18V","Turn On / Turn Off Time (Typ)":"2µs, 2µs","Current - DC Forward (If) (Max)":"100 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.1167","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/cdfaf651d7a1a3387e48131363a5f4f6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/4N28300/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to 4N28300?","answer":"No official pin-compatible successor from onsemi is documented. The 4N28 family (base product number 4N28) shares the same 6-DIP footprint and pinout, but individual CTR and isolation grades vary. A cross-reference search against the 4N28 family may yield a functional equivalent, but no drop-in replacement is guaranteed."},{"question":"How do I get current pricing and availability for 4N28300?","answer":"Submit a request for the quantity needed; pricing and lot-specific availability are confirmed at quote time."},{"question":"What is the input type and output configuration of 4N28300?","answer":"DC input on the LED side; transistor output with base access on the detector side. The base pin allows external bias adjustment or feedback compensation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/4N28300","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/4N28300 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-21T06:21:16.081Z","lastPublished":"2026-07-21T06:21:16.081Z","indexable":true}}