{"product_id":"osg65r069hs-mosfet-power-supply-unit-repair","title":"OSG65R069HS 700V 159A MOSFET for ASIC Miner Power Supply Unit","description":"\u003ch2\u003eOSG65R069HS 700V \/ 159A MOSFET | High-Voltage Power Transistor Replacement for ASIC Miner Power Supply Unit Repair\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eOSG65R069HS\u003c\/strong\u003e is a \u003cstrong\u003e700V \/ 159A N-channel MOSFET\u003c\/strong\u003e built around the charge-balancing super-junction architecture — used in the \u003cstrong\u003eprimary switching stage of ASIC miner power supplies\u003c\/strong\u003e. Direct drop-in replacement when an original device fails: restores stable power delivery and clears the dead-PSU \/ overcurrent-trip symptoms that come from a degraded high-voltage primary switch. Designed to withstand powerful avalanche events, which is what kills ordinary MOSFETs in mining PSU primary-side service.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003echarge-balancing method\u003c\/strong\u003e delivers \u003cstrong\u003elow on-resistance (Rds(on))\u003c\/strong\u003e and \u003cstrong\u003elow gate charge (Qg) together\u003c\/strong\u003e — historically a trade-off, super-junction breaks it. Result: \u003cstrong\u003eminimal conduction losses\u003c\/strong\u003e at sustained high current, \u003cstrong\u003efast switching with low switching losses\u003c\/strong\u003e, and \u003cstrong\u003epeak switching performance\u003c\/strong\u003e across the broad operating envelope mining PSUs see. Suitable for high-power-density applications including computer batteries, LED lighting, telecom power, server power, EV chargers, and solar \/ UPS systems beyond crypto mining.\u003c\/p\u003e\n\u003ch3\u003eWhen to Replace the OSG65R069HS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePSU primary stage dead\u003c\/strong\u003e — high-voltage MOSFET failed short or open, no switching action on the primary side.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOvercurrent trip on PSU startup\u003c\/strong\u003e — short across drain-source pulling the primary controller into protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcessive heating\u003c\/strong\u003e at the MOSFET location — degraded Rds(on), conduction loss rising above safe envelope.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisible burn or thermal damage\u003c\/strong\u003e on the package — direct replacement, swap any paralleled MOSFETs on the same leg.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePreventive PSU refurbishment\u003c\/strong\u003e — replace primary-stage MOSFETs alongside electrolytics during a complete rebuild.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eOSG65R069HS MOSFET 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\u003eOSG65R069HS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eN-Channel MOSFET (super-junction, charge-balancing)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrain-Source Voltage (Vds min @ Tj max)\u003c\/td\u003e\n\u003ctd\u003e700V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrain Current (Id pulse)\u003c\/td\u003e\n\u003ctd\u003e159A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOn-Resistance (Rds(on))\u003c\/td\u003e\n\u003ctd\u003eLow (charge-balancing super-junction)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGate Charge (Qg)\u003c\/td\u003e\n\u003ctd\u003eLow (charge-balancing topology)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvalanche Capability\u003c\/td\u003e\n\u003ctd\u003eHigh — withstands powerful avalanche events\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Loss\u003c\/td\u003e\n\u003ctd\u003eLow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFOM (Figure of Merit)\u003c\/td\u003e\n\u003ctd\u003eLow Rds(on) × Qg product\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Applications\u003c\/td\u003e\n\u003ctd\u003eASIC miner PSU primary stage, server \/ telecom power, EV charger, solar \/ UPS\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 — OSG65R069HS MOSFET\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Why does charge-balancing super-junction matter for mining PSU duty?\u003c\/strong\u003e\u003cbr\u003eA: Traditional MOSFETs trade off between Rds(on) (conduction loss) and Qg (switching loss) — lower one, the other rises. Charge-balancing super-junction breaks the trade-off, delivering both low Rds(on) and low Qg. Result: the part stays efficient both at static load (low conduction loss) and at high switching frequency (low switching loss) — exactly the duty profile of an ASIC PSU primary stage.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How do I diagnose a failed OSG65R069HS in-circuit?\u003c\/strong\u003e\u003cbr\u003eA: Diode-test drain-source with the gate grounded — a healthy N-channel reads infinite drain-source resistance. Short across drain-source confirms a dead part. Visual inspection catches the obvious burn cases. Note: the part operates at 400V+ in the primary stage — discharge bulk capacitors before probing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Should I replace all paralleled MOSFETs on the affected leg?\u003c\/strong\u003e\u003cbr\u003eA: For best long-term reliability replace all paralleled MOSFETs on the affected leg — the surviving parts have absorbed thermal stress from the failure event and have shortened service life.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Bulk pricing for repair shops?\u003c\/strong\u003e\u003cbr\u003eA: Yes — email \u003ca href=\"mailto:contact@lys-sz.com\"\u003econtact@lys-sz.com\u003c\/a\u003e with your monthly volume. Tube and tray quantities are stocked.\u003c\/p\u003e\n\u003ch3\u003eRelated products\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/si7n65f-650v-mosfet-antminer-apw17-apw12-psu-repair\"\u003eSi7N65F 650V MOSFET – Antminer APW17 \/ APW12 PSU\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/uj4c075044k4s-750v-sic-mosfet-antminer-apw17\"\u003eUJ4C075044K4S 750V SiC MOSFET – Antminer APW17\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/d100n06esl-100a-60v-n-channel-mosfet-asic-miner-psu\"\u003eD100N06ESL 100A 60V N-Channel MOSFET – ASIC PSU\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/fnks8n90k-mos-tube-replacement-part-antminer-apw11-psu-repair\"\u003eFNKS8N90K MOSFET TO-252 – Antminer APW11 PSU\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRepair shops stocking OSG65R069HS MOSFETs by the tray? 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":42359239246003,"sku":null,"price":2.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0627\/6710\/4179\/files\/OSG65R069HS-MOSFET-ASIC-Miner-Power-Supply-Unit.webp?v=1774239651","url":"https:\/\/lys-sz.com\/products\/osg65r069hs-mosfet-power-supply-unit-repair","provider":"LYS Shenzhen","version":"1.0","type":"link"}