{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"PS2703-1-K-A","brand":"Renesas Electronics","brandSlug":"renesas","productSlug":"PS2703-1-K-A","canonicalUrl":"https://icboms.com/renesas/PS2703-1-K-A","factsUrl":"https://icboms.com/api/mcp/products/PS2703-1-K-A","rawCanonicalId":null},"summary":{"shortDescription":"Renesas NEPOC series PS2703-1-K-A, single-channel DC-input phototransistor optocoupler, 3750Vrms isolation, 200% to 400% CTR at 5mA, 300mV Vce sat, 120V output, 30mA output, -55°C to 100°C, 4-SMD gull wing package.","salesMarkdown":"## 3750Vrms isolation in a 4-SMD gull wing The Renesas PS2703-1-K-A is a single-channel phototransistor optocoupler from the NEPOC series, packing 3750Vrms isolation into a compact 4-SMD gull wing package. It takes a DC input on the LED side and switches a phototransistor output rated for 120V and 30mA per channel. The current transfer ratio is specified at 200% minimum and 400% maximum at a 5mA forward current, which gives the designer a predictable gain window for sizing the LED drive resistor and the pull-up on the output side. Rise and fall times are both 10µs typical, making this part suited for status feedback, relay replacement, and isolated logic-level translation at moderate speeds — think PLC digital inputs, motor drive fault signals, or medical equipment isolation barriers where the 3750Vrms rating meets basic safety isolation requirements. ## CTR window — 200% to 400% at 5mA The 200% minimum CTR at 5mA forward current means the phototransistor collector current will be at least 10mA when the LED is driven at 5mA, which is enough to saturate a typical 10kΩ pull-up to 5V or 3.3V. The 400% maximum cap prevents overdrive that could slow turn-off. At low forward currents below 1mA the CTR drops off, so if you are trying to save LED power, verify the CTR curve — the min/max spec is only guaranteed at 5mA. The 300mV Vce saturation at the rated output current keeps the logic-low voltage well within TTL and CMOS thresholds. ## -55°C to 100°C — industrial cold, not full automotive hot The operating temperature range is -55°C to 100°C. It is ROHS3 compliant. No last-time-buy clock is ticking.","metaTitle":"PS2703-1-K-A NEPOC Optocoupler, 3750Vrms, 4-SMD Gull Wing","metaDescription":"PS2703-1-K-A NEPOC phototransistor optocoupler, single channel, 3750Vrms isolation, 200-400% CTR at 5mA, -55°C to 100°C, 4-SMD gull wing.","metaKeywords":null},"attributes":{"series":"NEPOC","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Optoisolators"],"specifications":{"Series":"NEPOC","Package":"Strip","Input Type":"DC","Output Type":"Transistor","Mounting Type":"Surface Mount","Package / Case":"4-SMD, Gull Wing","lifecycle_stage":"eol_hot","Number of Channels":"1","Voltage - Isolation":"3750Vrms","Vce Saturation (Max)":"300mV","Operating Temperature":"-55°C ~ 100°C","Rise / Fall Time (Typ)":"10µs, 10µs","Voltage - Output (Max)":"120V","Supplier Device Package":"4-SOP","Current - Output / Channel":"30mA","Current Transfer Ratio (Max)":"400% @ 5mA","Current Transfer Ratio (Min)":"200% @ 5mA","Voltage - Forward (Vf) (Typ)":"1.1V","Current - DC Forward (If) (Max)":"50 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.03","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.03000","currency":"USD"},{"qty":10,"price":"$0.67400","currency":"USD"},{"qty":100,"price":"$0.44140","currency":"USD"},{"qty":1000,"price":"$0.34845","currency":"USD"},{"qty":2000,"price":"$0.32522","currency":"USD"},{"qty":5000,"price":"$0.31360","currency":"USD"},{"qty":10000,"price":"$0.30896","currency":"USD"},{"qty":25000,"price":"$0.30199","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/bc4c8ca9847b2a9316bf7c33e9938237.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/renesas/PS2703-1-K-A","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/renesas/PS2703-1-K-A 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}}