{"product_id":"threaded-diode-zp300a-200a-100a-50a-30a-1600v-power-positive-stud-mount-rectifier-diode-200v-3000v-welding-machines-parts","title":"Threaded Diode ZP300A 200A 100A 50A 30A 1600V Power Positive Stud Mount Rectifier Diode 200V-3000V Welding Machines Parts","description":"\u003ch2\u003eZP Series Threaded Stud Mount Rectifier Diode — 30A to 300A, 200V to 3000V\u003c\/h2\u003e\n\n\u003cp\u003eIndustrial-grade positive stud mount rectifier diodes in the ZP series, featuring a glass-passivated silicon chip, brass threaded stud body, and hydrogen arc welding construction for maximum reliability in high-current rectification applications. Available in current ratings from 30A to 300A and voltage ratings from 200V to 3000V, covering the full range of single-phase and three-phase bridge rectifier requirements in welding machines, electroplating power supplies, and industrial motor drives.\u003c\/p\u003e\n\n\u003ch3\u003eVariant Selection Table\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eAverage Rectified Current (IF)\u003c\/th\u003e\n\u003cth\u003eRepetitive Peak Reverse Voltage (VRRM)\u003c\/th\u003e\n\u003cth\u003eStud Diameter\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eZP10A\u003c\/td\u003e\n\u003ctd\u003e10A\u003c\/td\u003e\n\u003ctd\u003e200V–3000V selectable\u003c\/td\u003e\n\u003ctd\u003eM8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZP20A\u003c\/td\u003e\n\u003ctd\u003e20A\u003c\/td\u003e\n\u003ctd\u003e200V–3000V selectable\u003c\/td\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZP30A\u003c\/td\u003e\n\u003ctd\u003e30A\u003c\/td\u003e\n\u003ctd\u003e200V–3000V selectable\u003c\/td\u003e\n\u003ctd\u003eM10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZP50A\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003ctd\u003e200V–3000V selectable\u003c\/td\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZP100A (12mm)\u003c\/td\u003e\n\u003ctd\u003e100A\u003c\/td\u003e\n\u003ctd\u003e200V–3000V selectable\u003c\/td\u003e\n\u003ctd\u003eM12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZP100A (16mm)\u003c\/td\u003e\n\u003ctd\u003e100A\u003c\/td\u003e\n\u003ctd\u003e200V–3000V selectable\u003c\/td\u003e\n\u003ctd\u003eM16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZP200A\u003c\/td\u003e\n\u003ctd\u003e200A\u003c\/td\u003e\n\u003ctd\u003e200V–3000V selectable\u003c\/td\u003e\n\u003ctd\u003eM20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZP300A\u003c\/td\u003e\n\u003ctd\u003e300A\u003c\/td\u003e\n\u003ctd\u003e200V–3000V selectable\u003c\/td\u003e\n\u003ctd\u003eM24\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eParameter\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eChip Technology\u003c\/td\u003e\n\u003ctd\u003eGlass-passivated silicon (GP chip)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStud Material\u003c\/td\u003e\n\u003ctd\u003eBrass (copper alloy), threaded positive stud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction\u003c\/td\u003e\n\u003ctd\u003eHydrogen arc welding (H-arc), hermetically sealed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eJunction Temperature (TJ)\u003c\/td\u003e\n\u003ctd\u003e−40°C to +150°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature (TSTG)\u003c\/td\u003e\n\u003ctd\u003e−40°C to +150°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eForward Voltage Drop (VF)\u003c\/td\u003e\n\u003ctd\u003e≤1.2V (typical at rated IF)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eThreaded stud (positive polarity), nut-and-washer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eHeatsink required (bolt-on to aluminium heatsink)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification\u003c\/td\u003e\n\u003ctd\u003eCE, RoHS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWelding Machines:\u003c\/strong\u003e Primary rectification in MIG, MMA, and TIG welding power supplies. ZP100A–ZP300A variants handle the high-current DC bus in industrial welding inverters and transformer-based welders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectroplating \u0026amp; Anodising Power Supplies:\u003c\/strong\u003e High-current DC rectification for electroplating baths, anodising tanks, and electrolytic processes requiring stable low-ripple DC at 50–300A.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree-Phase Bridge Rectifiers:\u003c\/strong\u003e Used in sets of 6 (3 positive + 3 negative stud diodes) to build three-phase full-wave bridge rectifiers for industrial motor drives and UPS systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Charging Systems:\u003c\/strong\u003e High-current charger rectification for lead-acid, NiCd, and industrial battery banks in forklift, telecom, and backup power applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExcitation Systems:\u003c\/strong\u003e Rotating rectifier assemblies in synchronous generator excitation circuits, where stud-mount diodes are mounted on the rotating shaft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Electronics Repair:\u003c\/strong\u003e Direct replacement for failed stud-mount diodes in existing industrial equipment without redesigning the heatsink assembly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMount stud into an aluminium heatsink with thermal compound (e.g., Dowsil TC-5026) for optimal thermal performance\u003c\/li\u003e\n\u003cli\u003eTorque stud nut to manufacturer specification (typically 15–25 N·m depending on stud size) — over-tightening can crack the ceramic body\u003c\/li\u003e\n\u003cli\u003ePositive stud polarity: stud = anode (+), body\/lead = cathode (−)\u003c\/li\u003e\n\u003cli\u003eAlways use a snubber RC circuit (e.g., 0.1µF + 10Ω) across the diode in inductive load applications to suppress voltage spikes\u003c\/li\u003e\n\u003cli\u003eDerate current by 50% when operating above 100°C case temperature\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between ZP100A 12mm and ZP100A 16mm?\u003c\/strong\u003e\u003cbr\u003eA: Both are rated at 100A average rectified current. The 12mm variant uses an M12 threaded stud for standard heatsink mounting; the 16mm variant uses an M16 stud for higher-torque mounting in heavy industrial assemblies with larger heatsink bores.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I use a ZP300A diode in a single-phase bridge rectifier?\u003c\/strong\u003e\u003cbr\u003eA: Yes. A single-phase full-wave bridge requires 4 diodes (2 positive + 2 negative stud). For a 300A DC output, use ZP300A positive stud diodes paired with equivalent negative stud diodes (e.g., ZK300A or equivalent).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What voltage rating should I select for a 220V AC input?\u003c\/strong\u003e\u003cbr\u003eA: For 220V AC single-phase input, the peak voltage is 220 × √2 ≈ 311V. Apply a 2× safety factor: select at least 600V (VRRM). For three-phase 380V AC, peak line voltage ≈ 537V — select 1200V or higher.\u003c\/p\u003e\n\n\u003ch3\u003ePackage Contents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 × ZP series stud mount rectifier diode (model and voltage as selected)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Keszoox","offers":[{"title":"ZP300A \/ China Mainland","offer_id":47723227152619,"sku":"14:193#ZP300A;200007763:201336100","price":113.8,"currency_code":"USD","in_stock":true},{"title":"ZP200A \/ China Mainland","offer_id":47723227185387,"sku":"14:173#ZP200A;200007763:201336100","price":87.44,"currency_code":"USD","in_stock":true},{"title":"ZP100A 16mm \/ China Mainland","offer_id":47723227218155,"sku":"14:29#ZP100A 16mm;200007763:201336100","price":67.2,"currency_code":"USD","in_stock":true},{"title":"ZP100A 12mm \/ China Mainland","offer_id":47723227250923,"sku":"14:10#ZP100A 12mm;200007763:201336100","price":67.2,"currency_code":"USD","in_stock":true},{"title":"ZP50A \/ China Mainland","offer_id":47723227283691,"sku":"14:350853#ZP50A;200007763:201336100","price":55.08,"currency_code":"USD","in_stock":true},{"title":"ZP30A \/ China Mainland","offer_id":47723227316459,"sku":"14:200026864#ZP30A;200007763:201336100","price":50.64,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/1005\/8731\/files\/S71c81c59cc1b46b5bac3ea50175c8d753.webp?v=1770450055","url":"https:\/\/keszoox.com\/products\/threaded-diode-zp300a-200a-100a-50a-30a-1600v-power-positive-stud-mount-rectifier-diode-200v-3000v-welding-machines-parts","provider":"Keszoox","version":"1.0","type":"link"}