{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MAX31855JASA+","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"MAX31855JASA","canonicalUrl":"https://icboms.com/analog-devices/MAX31855JASA","factsUrl":"https://icboms.com/api/mcp/products/MAX31855JASA%2B","rawCanonicalId":null},"summary":{"shortDescription":"Maxim Integrated MAX31855JASA+, Thermocouple to Digital Converter, J-Type Input, Digital Output, 8-SOIC Package, -40°C to 125°C, 900 µA Supply.","salesMarkdown":"## What this part is and where it fits The MAX31855JASA+ from Maxim Integrated is a thermocouple-to-digital converter designed specifically for J-type thermocouple probes. It digitises the cold-junction-compensated temperature reading and outputs the result over a SPI-compatible interface. The part comes in an 8-SOIC surface-mount package and operates across -40°C to 125°C, making it suitable for industrial process control, HVAC, engine monitoring, and other harsh-environment temperature sensing where a J-type probe is specified. ## Package and mounting The 900 µA supply current allows powering from a shared rail. The J-type input is the main selection gate: if your probe is type K, the pinout is the same, but the internal linearisation differs. The -40°C to 125°C operating range covers both the cold end of a freezer line and the hot side of an engine bay. ## Lifecycle and sourcing posture This part is listed as Active with ROHS3 compliance, so there is no last-time-buy clock ticking. No production-status uncertainty here.","metaTitle":"MAX31855JASA+ Thermocouple to Digital Converter, J-Type","metaDescription":"MAX31855JASA+ is an active thermocouple-to-digital converter for J-type probes in 8-SOIC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Type":"Thermocouple to Digital Converter","Package":"Tube","Input Type":"Thermocouple (J)","Output Type":"Digital","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Current - Supply":"900 µA","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"8-SOIC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10.5","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$10.50000","currency":"USD"},{"qty":10,"price":"$9.48900","currency":"USD"},{"qty":25,"price":"$9.04800","currency":"USD"},{"qty":100,"price":"$7.85640","currency":"USD"},{"qty":250,"price":"$7.50328","currency":"USD"},{"qty":500,"price":"$6.84124","currency":"USD"},{"qty":1000,"price":"$5.95850","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/702eda9c8c984a7dfb07f8d4396c8db3.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is MAX31855JASA+ equivalent to MAX31855KASA+?","answer":"The two parts are pin-compatible and share the same package and interface, but the MAX31855JASA+ is linearised for J-type thermocouples while the MAX31855KASA+ is for K-type. They are not electrically interchangeable without changing the probe type."},{"question":"Where can I buy MAX31855JASA+?","answer":"This part is sourced to order through independent distribution. Submit an RFQ for current availability and pricing — stock and lead time are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/MAX31855JASA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/MAX31855JASA 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}}