Excerpt from the tube collection of Peter Pfeiffer. These images (tube photos) were uploaded to the respective tubes or valves by Peter Pfeiffer.
	
	
	
		
			 
			
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					| I210 | 
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					| Common type USA tube/semicond. | 
					USA | 
				 
				
			 
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					| ICL3221 | 
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					| Common type USA tube/semicond. | 
					USA | 
				 
				
			 
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					| ICS570 | 
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					| Common type USA tube/semicond. | 
					USA | 
				 
				
			 
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					| ICS87972 | 
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					| Common type USA tube/semicond. | 
					USA | 
				 
				
			 
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					| ICS87973 | 
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					| Common type USA tube/semicond. | 
					USA | 
				 
				
			 
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					| ICS950810 | 
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					| Common type USA tube/semicond. | 
					USA | 
				 
				
			 
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					| IF860 | 
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					| Werk für Fernmeldewesen (OSW... | 
					D | 
				 
				
			 
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					| IL861 | 
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					| Werk für Fernmeldewesen (OSW... | 
					D | 
				 
				
			 
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					| ILQ2 | 
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					| Siemens (& Halske, -Schucker... | 
					D | 
				 
				
			 
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					| ILQ621 | 
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					| Siemens (& Halske, -Schucker... | 
					D | 
				 
				
			 
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					| iM4A3-128/64 | 
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					| Common type USA tube/semicond. | 
					USA | 
				 
				
			 
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					| INA105 | 
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					| Texas Instruments, Dallas | 
					USA | 
				 
				
			 
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					| INA111 | 
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					| Texas Instruments, Dallas | 
					USA | 
				 
				
			 
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					| INA114 | 
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					| Texas Instruments, Dallas | 
					USA | 
				 
				
			 
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					| IRF530 | 
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					| International Rectifier; Los... | 
					USA | 
				 
				
			 
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					| IRF540 | 
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					| International Rectifier; Los... | 
					USA | 
				 
				
			 
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					| IRF830 | 
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					| International Rectifier; Los... | 
					USA | 
				 
				
			 
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					| IRF840 | 
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					| International Rectifier; Los... | 
					USA | 
				 
				
			 
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					| IRF9530 | 
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					| International Rectifier; Los... | 
					USA | 
				 
				
			 
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					| IRF9622 | 
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					| International Rectifier; Los... | 
					USA | 
				 
				
			 
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					| IRFBC30 | 
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					| International Rectifier; Los... | 
					USA | 
				 
				
			 
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					| IRFBC42 | 
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					| International Rectifier; Los... | 
					USA | 
				 
				
			 
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					| IRFP450 | 
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					| International Rectifier; Los... | 
					USA | 
				 
				
			 
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					| IRFP460 | 
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					| International Rectifier; Los... | 
					USA | 
				 
				
			 
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					| IRFPC60 | 
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					| International Rectifier; Los... | 
					USA | 
				 
				
			 
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					| IRFR3303 | 
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					| International Rectifier; Los... | 
					USA | 
				 
				
			 
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					| IRFZ34 | 
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					| International Rectifier; Los... | 
					USA | 
				 
				
			 
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					| IS61C632A | 
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					| Common type Japan tube/semic... | 
					J | 
				 
				
			 
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					| ISL6227 | 
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					| Common type USA tube/semicond. | 
					USA | 
				 
				
			 
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	Peter Pfeiffer started his/her tube collection (valve collection) here on 07.May.2020.
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