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4 pins silver plated Ceramic Vacuum Tube Socket base for 811 300B 2A3
specifications︰ Main Characteristics:
Model NO. 811R
Working voltage：500V
Contact resistance：≤0.01Ω
Insulation resistance：≥10,000MΩ
(under normal condition)
Testing voltage：1500V
Total breakaway force：1.5~5kgf
Life time：200
Usage Descriptions︰ For tubes：
U4A
Tube pins:Ф2.03mm(2), Ф2.04mm(2)
300B、2A3、811、45、50、71A、83、5Z3、572B、5U4G、6B4G、274A、866、PX4，etc
Mounting Method: DIP
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