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The H10682 series is a photon counting head device consisting of a metal package photomultiplier tube, along with a high speed photon counting circuit and a high-voltage power supply circuit. The high voltage supply for photomul- tiplier tube and the discrimination level are preset to optimum values, allowing photon counting measurement by just connecting a +5 V supply. The H10682-110 has the super bialkali (SBA) photocathode and the H10682-210 has the ultra bialkali (UBA) photocathode, so they have higher sensitivity than conventional photon counting heads. The H10682 series has also over light detection function to output a signal at the state that an output count falls by excessive incident light. By this signal, measurement data can be judged that it is normal or not. Metal package PMT Photon Counting Head H10682 Series Type No. Features H10682-110 H10682-210 H10682-01 Spectral Response 230 nm to 700 nm 230 nm to 700 nm 230 nm to 870 nm Super Bialkali Photocathode, high sensitivity in visible range Ultra Bialkali Photocathode, high sensitivity in visible range Multialkali Photocathode, For UV to near IR range 300 nm 400 nm 500 nm 600 nm 700 nm 800 nm Typ. Max. Min. Typ. Min. Typ. Min. Max. Parameter H10682-210 Unit Input Voltage Max. Input Voltage Max. Input Current Effective Area Peak Sensitivity Wavelength Count Sensitivity Count Linearity * Dark Count *2 Pulse-pair Resolution Output Pulse Width Output Pulse Height Signal Output Logic Recommended Load Resistance Over Light Detection Output Operating Ambient Temperature *4 Storage Temperature *4 Weight Typ. 50 Ω Load Un-terminated V V mA mm nm s-1·pW-1 s-1 s-1 ns ns V Ω V g +4.75 to +5.25 400 3.9 × 10 6.1 × 105 4.6 × 105 1.3 × 105 9.1 × 103 5.0 × 106 100 +2.2 +4.4 Positive logic +3.5 +0.5 +5 to +40 -20 to +50 H10682-01 2.7 × 10 3.6 × 105 2.8 × 105 2.0 × 105 1.2 × 105 3.0 × 104 600 1000 H10682-110 3.7 × 105 4.9 × 105 3.7 × 105 1.1 × 105 7.7 × 103 100 *1: Random pulse, at 10 % count loss *2: After 30 minutes storage in darkness *3: Load resistance 10 kΩ *4: No condensation (at 25 °C) This product can't be used at vacuum environment or reduced pressure environment. High Level Low Level

Characteristics (Count sensitivity, Dark count) Block Diagram Dimensional Outlines (Unit: mm) Options (Optical Fiber Adapter) (Unit: mm) Photon Counting Heads TACCA0055EB E5776-51 (SMA Type) TACCA0239EB E5776 (FC Type) SIDE VIEWFRONT VIEW 4-M2 FC-R 14.0 ± 0.2 14.0 ± 0.2 12.0 ± 0.2 22.0 ± 0.5 GASKET (Supplied) 0.5 SIDE VIEWFRONT VIEW 4-M2 SMA 14.0 ± 0.2 14.0 ± 0.2 16.2 ± 0.2 3.18 22.0 ± 0.5 GASKET (Supplied) 0.5 TPMOB0217EA GCount Rate Linearity and Over Light Detection Output GCount Rate Linearity Correction 103 103 104 105 106 107 108 109 1010 104 105 106 107 108 RELATIVE INPUT LIGHT COUNT RATE (s-1) 109 1010 1011 1012 OVER LIGHT DETECTION OUTPUT 0 V +4 V OUTPUT COUNT TPMOB0218EA 103 -80 -70 -60 -50 -40 -30 -20 -10 4 105 106 107 108 COUNT RATE (s-1) DEVIATION (%) MEASURED CORRECTED Correction Formula N M t : Real Count Rate (s-1) : Measured Count Rate (s-1) : Pulse Pair Resolution (s) N = M 1-Mt TPMOA0058EA TPMOC0226EB TPMOB0215EB 200 103 104 105 106 300 400 500 WAVELENGTH (nm) 600 700 800 900 COUNT SENSITIVITY (s-1·pW-1) H10682-110 H10682-210 H10682-01 TPMOB0216EB 40.0±0.5 200 ±20 0.5 20.0±0.210 14.0±0.2 22.0±0.5 36.0±0.5 14.0±0.2 LOW VOLTAGE INPUT (+5 V) GND OVER LIGHT DETECTION OUTPUT SIGNAL OUTPUT : AWG24 (RED) : AWG24 (BLACK) : AWG24 (BLUE) : RG-174/U WINDOW PHOTOCATHODE MOUNTING THREADED HOLE (2-M3 DEPTH 4) EFFECTIVE AREA ( 8 MIN.) THREADED HOLE FOR OPTION (4-M2 DEPTH 4) 5 1 01 52 02 53 03 54 0 100 101 102 103 104 AMBIENT TEMPERATURE (°C) DARK COUNTS (s-1) H10682-110 H10682-210 H10682-01 OVER LIGHT DETECTION OUTPUT +4.0 V at the over light condition

0 V at the normal condition

L.L.D. HV POWER SUPPL Y / VOLTAGE DIVIDER CIRCUIT GND POWER INPUT +5 V TO PULSE COUNTER RL 50 Ω