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| Compact Head-on PMT Photon Counting Head H7828 Series The H7828 series are photon counting head devices using a 19 mm (3/4") diameter head-on photomultiplier tube, high-speed photon counting circuit, and high-voltage power supply circuit. The high voltage supply for photomultiplier tube and the discrimination level are preset to optimum levels, allowing photon counting measurement by just connecting a +5 V supply. Despite its compact size, the effective photosensitive area is as large as 15 mm in diameter, so the incident light can be collected very efficiently. Compared to other PMT modules, the H7828 series devices have higher resistance to vibration and shock, making them suitable for portable or mobile measurement equipment. Two types of photomultiplier tubes with different spectral response characteristics are provided for measurement in the visible range or visible to near IR range. Product Variations Type No. H7828 H7828-01 Spectral Response 300 nm to 650 nm 300 nm to 850 nm Features For visible range For visible to near IR range Specifications Parameter Input Voltage Max. Input Voltage Max. Input Current Effective Area Peak Sensitivity Wavelength 300 nm 400 nm Count Typ. 500 nm Sensitivity 600 nm 700 nm Count Linearity *1 Typ. Dark Count *2 Max. Pulse-pair Resolution Output Pulse Width Typ. Output Pulse Height *3 Min. Recommended Load Resistance Signal Output Logic Operating Ambient Temperature Storage Temperature Weight H7828 +4.5 to +5.5 +6 60 15 420 2.1 x 105 3.6 x 105 2.8 x 105 5.0 x 104 -- 1.5 x 106 200 500 70 30 3.5 3.0 50 Positive logic +5 to +40 -20 to +50 70 2000 3500 380 1.7 x 105 2.1 x 105 1.6 x 105 1.0 x 105 5.9 x 104 H7828-01 Unit V V mA mm nm s-1*pW-1 s-1 s-1 ns ns V -- C C g *1: Random pulse, at 10 % count loss *2: After 30 minute storage in darkness *3: With input voltage +5 V, Load resistance 50 and Coaxial cable RG-174/U (450 mm) 46 Photon Counting Heads Characteristics (Count sensitivity, Dark count) 106 TPHOB0051EA 105 TPHOB0052EA 104 COUNT SENSITIVITY (s-1. pW-1) H7828-01 H7828-01 DARK COUNT (s-1) 105 103 H7828 102 H7828 104 101 103 200 300 400 500 600 700 800 900 100 5 10 15 20 25 30 35 40 WAVELENGTH (nm) AMBIENT TEMPERATURE (C) Block Diagram PMT AMP COMPARATOR + LLD. HV POWER SUPPLY VOLTAGE DIVIDER CIRCUIT POSITIVE LOGIC RL 50 PULSE SHAPER OUTPUT TO PULSE COUNTER GND +5 V TPHOC0035ED POWER INPUT Dimensional Outlines (Unit: mm) 26.0 +0.5 -0 13.0 0.5 EFFECTIVE AREA ( 15 MIN.) 0 +0.1 -0.3 56.0 +0.5 -0 SIGNAL OUTPUT BNC-R 19.0 0.5 18.0 0.5 POWER INPUT CONNECTOR HIROSE HR10A-7R-6P 1: Vcc +5 V 2: GND 3: IC* 4: IC* 5: NC 6: NC * Internal Connection (Do not use) 50.0 +1.0 -0 14.0 0.5 18 4-M2 DEPTH: 5 10.0 0.5 FRONT VIEW 16.0 0.5 SIDE VIEW 25.0 0.5 18.6 0.7 2-M3 DEPTH: 5 REAR VIEW Power cable with connector (HIROSE HR10A-7P-6S) is supplied with H7828 series BLACK : GND RED : LOW VOLTAGE INPUT (+5 V) 700 20 TPHOA0028EB 47 |
Price & Availability of H7828-01
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