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Part Number	Size [mm]
R7639	28

Click image to enlarge	28mm side on PMT for 115-230nm. solar blind. high QE
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Key Specifications	Drawing	Related Products
Part Number R7639 Type Side on Size 28mm ActiveDia/L 3mm ActiveHeight 12mm Min 115nm Max 230nm Peak Sens. 155nm Cathode Radiant Sensitivity 50mA/W Window MgF2 Cathode Type Diamond Gain 3.0E+06 Dark Current after 30 min. 0.5nA Rise Time 2.2ns Transit Time 22ns Transit Time Spread 1.2ns Number of Dynodes 9 Applied Voltage 1000V Multi Anode N Notes Diamond photocathode. circular-cage dynode structure Magnetic Shield E989 Socket Bare E678-11A Socket + bleeder assy. E717-75 E717-63 E717-500 Socket + bleeder + Amp. C7246-01 C7247-01 Socket + bleeder + HV circuit C6270 C8728 C8971 Socket + bleeder + HV + Amp C6271 C7950 Socket Other E1135-503 Power Supply C4900 C4900-01 C4900-50 C4900-51 C4710 C4710-01 C4710-02 C4710-50 C4710-51 C4710-52 C3830 C4720 Amplifier C7319 C6438 C5594 M7279 M8879	Click image to enlarge Typical Spectral Response Click image to enlarge	Magnetic Shield E989 Socket Bare E678-11A Socket + bleeder assy. E717-63 E717-500 Socket + bleeder + Amp. C7246-01 C7247-01 Socket + bleeder + HV circuit C6270 C8728 Socket + bleeder + HV + Amp C6271 C7950 Socket Other E1135-503 Power Supply C4900 C4900-01 C4900-50 C4900-51 C4710 C4710-01 C4710-02 C4710-50 C4710-51 C4710-52 Amplifier C7319 C6438 M7279 M8879