{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"DS1878T+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"DS1878T","canonicalUrl":"https://icboms.com/analog-devices/DS1878T","factsUrl":"https://icboms.com/api/mcp/products/DS1878T%2B","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices DS1878T+ SFP+ Controller, 2.5 mA supply, -40°C to 95°C, 28-WFQFN Exposed Pad / 28-TQFN (5x5), Tube, Surface Mount, Active.","salesMarkdown":"## SFP+ controller with digital LDD interface The DS1878T+ is an SFP+ controller from Analog Devices that integrates a digital laser-diode driver (LDD) interface, handling both analog and digital input types and outputting a digital signal for closed-loop control of the SFP+ transceiver bias and modulation. Its 2.5 mA supply current keeps the controller's own draw low enough that the SFP+ module's total power budget — typically capped at 1.5 W per the SFF-8431 specification — is not eaten by the control logic, leaving headroom for the laser driver and TIA. Rated for operation from -40°C to 95°C, the part covers the industrial temperature band plus a 10°C margin above the standard 85°C, useful in outdoor or poorly ventilated OLT/ONU equipment where the module ambient settles above 85°C. ## Package and board-fit for 28-TQFN The DS1878T+ is supplied in a 28-lead TQFN package (5x5 mm body, 0.50 mm pitch) with an exposed pad — the same footprint as the 28-WFQFN variant, so the PCB land pattern is shared across both order codes. Without adequate thermal relief under the pad, the junction temperature will rise above the 95°C ambient ceiling even at the 2.5 mA supply current.","metaTitle":"DS1878T+ SFP+ Controller, 2.5 mA, 28-TQFN, Analog Devices","metaDescription":"DS1878T+ SFP+ Controller from Analog Devices, active production, 2.5 mA supply, -40°C to 95°C, 28-TQFN package. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Type":"SFP+ Controller","Package":"Tube","Input Type":"Analog, Digital","Output Type":"Digital","Mounting Type":"Surface Mount","Package / Case":"28-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Current - Supply":"2.5 mA","Operating Temperature":"-40°C ~ 95°C","Supplier Device Package":"28-TQFN (5x5)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.59","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.59000","currency":"USD"},{"qty":10,"price":"$5.02400","currency":"USD"},{"qty":25,"price":"$4.74960","currency":"USD"},{"qty":100,"price":"$4.11630","currency":"USD"},{"qty":250,"price":"$3.90516","currency":"USD"},{"qty":500,"price":"$3.50410","currency":"USD"},{"qty":1000,"price":"$2.95526","currency":"USD"},{"qty":2500,"price":"$2.80750","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/82d0197ce5d5b4ebbc1c36422933fe64.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does the DS1878T+ come in?","answer":"It is shipped in tube packaging."},{"question":"What is the DS1878T+ used for?","answer":"The DS1878T+ is an SFP+ controller with a digital LDD interface, used to manage bias and modulation current in SFP+ optical transceivers. It accepts analog and digital inputs and outputs a digital control signal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/DS1878T","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/DS1878T when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}