[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-672604-105":3,"detail-sidebar-cat-0-en-105":79,"doc-detail-672604-en":129},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":72,"head_meta":74,"extra_data":76,"updated_unix":78},105,"en","shuguang-beijing-vacuum-tube-datasheet-analog-metric-limited-2a3-series","Shuguang Beijing Vacuum Tube Datasheet Analog Metric Limited - 2A3 Series","","Cross reference table and technical datasheets for Shuguang vacuum tube types supplied by Analog Metric Limited, including triode, beam tetrode, pentode, emitter tube, rectifier, and Compactron entries. The document provides compatibility mappings (e.g., 2A3B/2A3C with 2A3, and 300B-98 with 300B) and detailed product sections for 2A3B and 2A3C with descriptions, features, and electrical specifications such as filament heating, maximum ratings, capacitances, DC parameters, and recommended operating conditions for class A and class AB use in audio frequency applications.",{"@graph":14,"@context":71},[15,34,54],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/technology/","Technology",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/shuguang-beijing-vacuum-tube-datasheet-analog-metric-limited-2a3-series/672604/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":48,"encodingFormat":47,"isAccessibleForFree":49,"interactionStatistic":50},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/shuguang-beijing-vacuum-tube-datasheet-analog-metric-limited-2a3-series/672604.png","ImageObject",300,407,{"name":42,"@type":43},"（）","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-11-02",true,{"@type":51,"interactionType":52,"userInteractionCount":22},"InteractionCounter",{"@type":53},"ViewAction",{"@type":55,"mainEntity":56},"FAQPage",[57,63,67],{"name":58,"@type":59,"acceptedAnswer":60},"What tubes are listed under the triode cross reference table?","Question",{"text":61,"@type":62},"The triode section includes mappings such as 2A3B(2A3), 2A3C(2A3), 300B-98B(300B), 300BA(300B), and 300BS-B(300B), along with 211 with GL-211 and UV-211 cross references.","Answer",{"name":64,"@type":59,"acceptedAnswer":65},"What are the main features described for 2A3B and 2A3C?",{"text":66,"@type":62},"For 2A3B, the document highlights new filament hooking design, high carbon alloy plate, and a high transparency T16 glass envelope. For 2A3C, it lists gold-plated pins and ceramic tube socket, a high-transparency 300B-type tube envelope, a new filament hooking design, improved stability, and a three-layer mica film to reduce vibration and microphone effect.",{"name":68,"@type":59,"acceptedAnswer":69},"Which operating modes and key electrical specifications are provided for the 2A3 series?",{"text":70,"@type":62},"The datasheets provide filament heating and maximum ratings, capacitances, and DC parameters, plus recommended operating conditions for class A amplification with fixed biasing and for class AB amplification with fixed biasing or self-biasing, targeting audio frequency amplification.","https://schema.org",{"og:url":32,"og:type":73,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":75,"canonical":32},"index,follow",{"doc_id":77,"site_id":7},672604,1793600944,{"code":4,"msg":80,"data":81},"success",[82,86,90,94,99,103,108,113,118,121,125],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":83,"show_sort_weight":84,"slug":85},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":87,"show_sort_weight":88,"slug":89},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":91,"show_sort_weight":92,"slug":93},"Exam",70,"exam",{"id":95,"doc_module":4,"doc_module_name":25,"category_name":96,"show_sort_weight":97,"slug":98},5,"Comic",60,"comic",{"id":100,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":101,"slug":102},6,50,"technology",{"id":104,"doc_module":4,"doc_module_name":25,"category_name":105,"show_sort_weight":106,"slug":107},7,"Healthcare",40,"healthcare",{"id":109,"doc_module":4,"doc_module_name":25,"category_name":110,"show_sort_weight":111,"slug":112},8,"Research & Report",30,"research-report",{"id":114,"doc_module":4,"doc_module_name":25,"category_name":115,"show_sort_weight":116,"slug":117},9,"Religion & Spirituality",20,"religion-spirituality",{"id":116,"doc_module":4,"doc_module_name":25,"category_name":119,"show_sort_weight":116,"slug":120},"World Cup","world-cup",{"id":122,"doc_module":4,"doc_module_name":25,"category_name":123,"show_sort_weight":122,"slug":124},10,"Lifestyle","lifestyle",{"id":126,"doc_module":4,"doc_module_name":25,"category_name":127,"show_sort_weight":95,"slug":128},19,"General","general",{"code":4,"msg":80,"data":130},{"doc_id":77,"user_id":131,"nickname":42,"user_avatar":132,"doc_module":4,"category_id":100,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":133,"file_id":134,"file_url":135,"file_type":136,"file_size":137,"view_count":22,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":138,"language":139,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":140,"faqs":141,"seo_title":142,"seo_description":12,"update_tm":78,"read_time":143},5909898202386,"https://ap-avatar.wpscdn.com/davatar_29158cc5080c5b710cf443261637dec0","Analog Metric Limited Email: [sales@analogmetric.com](sales@analogmetric.com)  \nShuguang Vacuum Tube  \nCross Reference Table  \n\n| Type | Part Number | Cross Reference |\n| --- | --- | --- |\n| Triode | 2A3B(2A3) | 2A3C |\n|  | 2A3C(2A3) | 2A3B |\n|  | 300B-98B(300B) | 300B-98 |\n|  | 300BA(300B) |  |\n|  | 300BS-B(300B) |  |\n|  | 211 | GL-211 and UV-211 |\n| Beam Tetrode | EL34-B |  |\n|  | KT66 |  |\n|  | KT88-98(KT88), | 6550 and CV5220 |\n|  | 5881A(5881) | 6L6G, 6L6GA, 6L6GB and 6L6GC |\n|  | 6L6GCR(6L6G) | 6L6G and 5881 |\n|  | 6P3P | 6L6G |\n| Pentode | EL34A(EL34) | 6CA7 |\n|  | EL156 | KT series and 6550 |\n| Emitter Tube | 572B |  |\n|  | 805(FU-5) | GL-805 |\n|  | 807(FU-7J) | UY-807 |\n|  | 811(FU-811) | 811A |\n|  | 845B | UY-845 |\n| Rectifier | 274B | 5Z3P and 5Z3PA |\n|  | 5Z3PAT(5Z3P) | 5U4G and CV841 |\n| Compactron | 12AX7B(12AX7) | 12AX7A, 7025 and ECC83 |\n|  | 12AT7 | GT-12AT7, 6021 and ECC81 |\n|  | 12AU7 | 5814, 6189 and ECC82 |\n|  | 6N1 | 6922 and 6DJ8 |\n|  | 6N2 |  |\n\n[http://www.AnalogMetric.com](http://www.AnalogMetric.com) 1  \nAnalog Metric Limited Email: [sales@analogmetric.com](sales@analogmetric.com)  \nTriode  \n􀀁 2A3B (2A3)  \n􀀁 2A3C (2A3)  \n􀀁 300B-98 (300B)  \n􀀁 300BA (300B)  \n􀀁 300BS-B (300B)  \n􀀁 211  \n[http://www.AnalogMetric.com](http://www.AnalogMetric.com) 2  \nAnalog Metric Limited Email: [sales@analogmetric.com](sales@analogmetric.com)  \nShuguang Vacuum Tube 2A3 Series  \nTriode: 2A3B (2A3)  \nDESCRIPTION  \n2A3B is compatible with 2A3 . It is direct heating cathode and low power consumption. Two triodescan be used in class A and AB amplification. The output power of single tube can reach 6.5W. High evacuated tube, it achieve high performance tube in audio frequency.  \nFEATURES  \n􀀁 New filament hooking design  \n􀀁 Plate of high carbon alloy  \n􀀁 Using high transparency ofT16 as glass envelope  \n[http://www.AnalogMetric.com](http://www.AnalogMetric.com) 3  \nAnalog Metric Limited Email: [sales@analogmetric.com](sales@analogmetric.com)  \nSPECIFICATION  \nFilament Heating  \nUf……………………… 2.5 V  \nIf…………………………2.5 A  \nMaximum Ratings  \nPlate voltage…………………………300 V  \nPlate power dissipation…………….…15 W  \nGrid resistance  \nFor self-biasing voltage…………………0.5 M Ω  \nFor fix biasing voltage…………………0.05 M Ω  \nCapacitances  \nInput capacitance……………… 7.5pF Output capacitance……………16.5pF Muller capacitance…………..……5pF  \nDC Parameters  \nUa   300V  \n-Ug………………………… 45V  \nIa………………………… 60mA  \nGm………………………… 5.25mA/V  \nri………………………… 0.8k Ω  \nu………………………… 4.2  \nPout…………………………3.5W  \nRecommended Operating Conditions (suggested value)  \nSingle tube class A amplifying (fix biasing voltage)  \nUa   250V  \n-Ug…………………45V  \nRL…………………2.5 k Ω  \nIa(0)…………………60mA  \nGm………………5.25 Ma/V  \nri……………………0.8 K Ω  \nu……………………4.2  \nPout…………………3.5 W  \nDtot……………………5 %  \nDriving class AB amplifier  \nfixed biasing self-biasing  \nUa……………300 300 V  \n-Ug……………62V Rk=780 Ω  \nRL……………3 5 k Ω  \n[http://www.AnalogMetric.com](http://www.AnalogMetric.com) 4  \nAnalog Metric Limited Email: [sales@analogmetric.com](sales@analogmetric.com)  \nüg(pk)………87 110 V  \nIa(0)…………80 80 mA  \nIa(max.sig)…140 100 mAPout……………15 10 W  \nDtot……………2.5 5 %  \n[http://www.AnalogMetric.com](http://www.AnalogMetric.com) 5  \nAnalog Metric Limited Email: [sales@analogmetric.com](sales@analogmetric.com)  \nShuguang Vacuum Tube 2A3 Series  \nTriode: 2A3C (2A3)  \nCompatible with: 2A3B  \nDESCRIPTION  \n2A3C is compatible with 2A3 and 2A3B. Direct heating cathode and low power consumption. Two triodes can be used for class A and AB amplification.  \nFEATURES  \n􀀁 Gold-plated pins, ceramic tube socket  \n􀀁 Using high transparency tube envelop of 300B  \n􀀁 New design of filament hooking  \n􀀁 High evacuated tube, make it more stable and reliable.  \n􀀁 Fix three layer mica film provides firm inner structure for anti-vibration and reduces microphone effect.  \n[http://www.AnalogMetric.com](http://www.AnalogMetric.com) 6  \nAnalog Metric Limited Email: [sales@analogmetric.com](sales@analogmetric.com)  \nSPECIFICATION  \nFilament Heating  \nUf…………………","cbCaifYz1NbKtH4E","https://ap.wps.com/l/cbCaifYz1NbKtH4E","pdf",1851084,67,"English","# Cross Reference Table\n## Triode Cross References\n## Beam Tetrode Cross References\n## Pentode / Emitter Tube / Rectifier / Compactron\n# 2A3 Series Datasheet\n## 2A3B: Description and Features\n## 2A3B: Specification and Operating Conditions\n## 2A3C: Description and Features\n## 2A3C: Specification and Operating Conditions","[{\"question\":\"What tubes are listed under the triode cross reference table?\",\"answer\":\"The triode section includes mappings such as 2A3B(2A3), 2A3C(2A3), 300B-98B(300B), 300BA(300B), and 300BS-B(300B), along with 211 with GL-211 and UV-211 cross references.\"},{\"question\":\"What are the main features described for 2A3B and 2A3C?\",\"answer\":\"For 2A3B, the document highlights new filament hooking design, high carbon alloy plate, and a high transparency T16 glass envelope. For 2A3C, it lists gold-plated pins and ceramic tube socket, a high-transparency 300B-type tube envelope, a new filament hooking design, improved stability, and a three-layer mica film to reduce vibration and microphone effect.\"},{\"question\":\"Which operating modes and key electrical specifications are provided for the 2A3 series?\",\"answer\":\"The datasheets provide filament heating and maximum ratings, capacitances, and DC parameters, plus recommended operating conditions for class A amplification with fixed biasing and for class AB amplification with fixed biasing or self-biasing, targeting audio frequency amplification.\"}]","Shuguang Beijing Vacuum Tube Datasheet Analog Metric Limited - 2A3 Series | PDF",169]