{"product_id":"adum1402arwz-digital-isolator-16soic-antminer-d7-hashboard","title":"ADUM1402ARWZ-RL Digital Isolator 16-SOIC for Antminer D7 Hashboard","description":"\u003ch2\u003eADUM1402ARWZ-RL 4-Channel Digital Isolator | 16-SOIC iCoupler Replacement for Antminer D7 Hashboard Repair\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eADUM1402ARWZ-RL\u003c\/strong\u003e is a \u003cstrong\u003e4-channel digital isolator\u003c\/strong\u003e in a \u003cstrong\u003e16-SOIC package\u003c\/strong\u003e, used on the \u003cstrong\u003eAntminer D7 hashboard\u003c\/strong\u003e to provide galvanic isolation between the high-voltage \/ high-current side and the low-voltage logic side. Built on the iCoupler magnetic-coupling architecture — \u003cstrong\u003e2500Vrms isolation\u003c\/strong\u003e, \u003cstrong\u003e25kV\/µs common-mode transient immunity\u003c\/strong\u003e, and \u003cstrong\u003e1Mbps data rate\u003c\/strong\u003e with tight channel-to-channel matching (\u0026lt;2ns CRW).\u003c\/p\u003e\n\u003cp\u003eWhy isolation matters on the D7 hashboard: the ASIC chains generate substantial switching noise and the local control logic needs a clean reference. The ADUM1402ARWZ keeps the two domains decoupled — when this isolator fails, the result is corrupted communication between control logic and ASIC chains, missing chips on diagnostic scans, or full chain dropouts under load.\u003c\/p\u003e\n\u003ch3\u003eWhen to Replace the ADUM1402ARWZ\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAntminer D7 chain missing chips or dropping under load\u003c\/strong\u003e — isolator channel failure breaking the signal path.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGarbled communication\u003c\/strong\u003e between the control board and a specific hashboard — isolator pulse-width distortion climbing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisible damage on the 16-SOIC package\u003c\/strong\u003e after a high-voltage event on the isolated side.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHashboard boots intermittently\u003c\/strong\u003e with random communication drops — isolator degraded under thermal stress.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne of the four channels dead\u003c\/strong\u003e — replace the whole IC, individual channels not field-isolable.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eADUM1402ARWZ-RL Specifications\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003eADUM1402ARWZ-RL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase Product\u003c\/td\u003e\n\u003ctd\u003eADUM1402\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunction\u003c\/td\u003e\n\u003ctd\u003e4-channel digital isolator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTechnology\u003c\/td\u003e\n\u003ctd\u003eMagnetic coupling (iCoupler)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Configuration\u003c\/td\u003e\n\u003ctd\u003e4 unidirectional (3 forward + 1 reverse \/ configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIsolation Voltage\u003c\/td\u003e\n\u003ctd\u003e2500 Vrms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon-Mode Transient Immunity (min)\u003c\/td\u003e\n\u003ctd\u003e25 kV\/µs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData Rate\u003c\/td\u003e\n\u003ctd\u003e1 Mbps\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePropagation Delay (max)\u003c\/td\u003e\n\u003ctd\u003e100ns (tpLH \/ tpHL)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePulse Width Distortion (max)\u003c\/td\u003e\n\u003ctd\u003e40ns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRise \/ Fall Time (typ)\u003c\/td\u003e\n\u003ctd\u003e2.5ns \/ 2.5ns\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e2.7V to 5.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-40°C to +105°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003e16-SOIC (0.295\" \/ 7.5mm width)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible Hashboard\u003c\/td\u003e\n\u003ctd\u003eAntminer D7\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondition\u003c\/td\u003e\n\u003ctd\u003eBrand New\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eFAQ — ADUM1402ARWZ Digital Isolator\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I confirm the isolator is the failed part?\u003c\/strong\u003e\u003cbr\u003eA: With power on, scope the input pin and corresponding output pin on each of the four channels. Healthy channel: output mirrors input with ~100ns delay. Failed channel: output stuck high or low, doesn't track input. Test all four channels — even if only one is dead, replace the whole IC since individual channels share the substrate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I substitute a generic optoisolator?\u003c\/strong\u003e\u003cbr\u003eA: No — optoisolators top out at maybe 10kV\/µs CMTI and have very different propagation delay characteristics. The ADUM1402's 25kV\/µs CMTI and tight 2.5ns rise \/ fall times are specifically why this part was chosen on the D7 hashboard. Substituting a slower or less robust isolator will cause intermittent or undetected failures.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: 16-SOIC rework profile?\u003c\/strong\u003e\u003cbr\u003eA: Standard 16-SOIC rework. Bottom-side preheat 130°C, top-side hot air 320°C with flux paste. Match pin-1 orientation carefully — 16-SOIC is symmetrical-looking but pin-1 reversal will short rails on power-up.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Bulk pricing for Antminer D7 repair benches?\u003c\/strong\u003e\u003cbr\u003eA: Yes — email contact@lys-sz.com for tube-quantity ADUM1402ARWZ pricing.\u003c\/p\u003e\n\u003ch3\u003eRelated products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/adum130d0brz-digital-isolator-3000vrms-avalon-921-hashboard-repair\"\u003eADUM130D0BRZ Digital Isolator 3000Vrms (Avalon 921)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/si8261-si8261bbd-isolator-gate-drivers-cryptominer-repair\"\u003eSI8261BBD 5kV Isolator Gate Driver (Whatsminer P21)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/nsi8100n-isolator-chip-bitmain-apw17-power-supply-unit\"\u003eNSi8100N Isolator Chip (Bitmain APW17 PSU)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/antminer-d7-water-cooling-plate-heatsink-heat-dissipation-improved-mining-performance\"\u003eAntminer D7 Water Cooling Plate Kit\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAntminer D7 repair benches stocking ADUM1402ARWZ digital isolators by the tube? Email \u003ca href=\"mailto:contact@lys-sz.com\"\u003econtact@lys-sz.com\u003c\/a\u003e for bulk pricing. Worldwide shipping from our Shenzhen warehouse.\u003c\/p\u003e","brand":"LYS Shenzhen","offers":[{"title":"Default Title","offer_id":42469074075827,"sku":null,"price":3.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6710\/4179\/files\/ADUM1402ARWZ-RL-Digital-Isolator-16-SOIC-Antminer-D7-Hashboard.webp?v=1773983508","url":"https:\/\/lys-sz.com\/products\/adum1402arwz-digital-isolator-16soic-antminer-d7-hashboard","provider":"LYS Shenzhen","version":"1.0","type":"link"}