{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"HCPL4503TSR2VM","brand":"onsemi","brandSlug":"onsemi","productSlug":"HCPL4503TSR2VM","canonicalUrl":"https://icboms.com/onsemi/HCPL4503TSR2VM","factsUrl":"https://icboms.com/api/mcp/products/HCPL4503TSR2VM","rawCanonicalId":null},"summary":{"shortDescription":"onsemi HCPL4503TSR2VM single-channel optocoupler, 5000Vrms isolation, 8-DIP through-hole package, DC input, transistor with base output, Tape & Reel.","salesMarkdown":"## 5000Vrms isolation — the safety barrier for mains-tied designs The HCPL4503TSR2VM is a single-channel optocoupler from onsemi, built around a phototransistor output with a base terminal brought out. The 5000Vrms isolation rating qualifies it for reinforced insulation between the primary and secondary sides of a power supply, motor drive, or PLC digital input — the same isolation class used in medical and industrial equipment where a single-fault condition must not create a shock hazard. ## CTR range and LED drive budget Current transfer ratio spans 19% to 50% at a forward current of 16 mA. The 19% minimum is the number that governs the worst-case design: at 16 mA input, the output transistor can sink at least 3 mA (19% of 16 mA). If your load requires 5 mA, you need to increase the LED current or choose a part with a higher CTR floor. The 50% maximum matters for the pull-up resistor — too large a resistor with a high-CTR unit saturates the output transistor slowly, stretching the turn-off time beyond the 260ns typical. Forward voltage is 1.45V typical at the LED, with an absolute maximum forward current of 25 mA. The 8 mA output current per channel is the continuous collector current rating — the transistor itself, not the CTR, limits the load side. For driving a logic input with a 10 kΩ pull-up to 5V, the 0.5 mA load is well within the 8 mA ceiling. ## Package and temperature grade This covers most factory-floor, outdoor telecom cabinet, and HVAC controller environments. The 5000Vrms isolation is tested per the component-level standard; system-level creepage and clearance still depend on the PCB layout and any conformal coating.","metaTitle":"onsemi HCPL4503TSR2VM Optocoupler, 5000Vrms, 8-DIP","metaDescription":"onsemi HCPL4503TSR2VM single-channel optocoupler, 5000Vrms isolation, 250ns/260ns switching, 19%-50% CTR at 16mA. Active production, sourced per RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Mfr":"onsemi","Series":"-","Package":"Tape & Reel (TR)","Input Type":"DC","Output Type":"Transistor with Base","Mounting Type":"Through Hole","Package / Case":"8-DIP (0.400\\\", 10.16mm)","Product Status":"Active","lifecycle_stage":"eol_hot","Number of Channels":"1","Base Product Number":"HCPL4503","Voltage - Isolation":"5000Vrms","Vce Saturation (Max)":"-","Operating Temperature":"-40°C~100°C","Rise / Fall Time (Typ)":"-","Voltage - Output (Max)":"20V","Supplier Device Package":"8-MDIP","Current - Output / Channel":"8mA","Current Transfer Ratio (Max)":"50% @ 16mA","Current Transfer Ratio (Min)":"19% @ 16mA","Voltage - Forward (Vf) (Typ)":"1.45V","Turn On / Turn Off Time (Typ)":"250ns, 260ns","Current - DC Forward (If) (Max)":"25 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.6945","priceTiers":[{"qty":195,"price":"$1.54000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a72f6fa6f14d48688d3319ad554435f6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/HCPL4503TSR2VM/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/onsemi/HCPL4503TSR2VM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/onsemi/HCPL4503TSR2VM 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}}