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Micro-PMT photon counting head
H12406-01
H12406 series has an internal photon counting circuit. The H12406-01 is multialkali photocathode micro PMT photon counting head with spectral response range from 300 nm to 850 nm.
Specifications
| Spectral response | 300 nm to 850 nm |
|---|---|
| Peak sensitivity wavelength | 420 nm |
| Photocathode material | Multialkali |
| Window material | Borosilicate glass |
| Effective area | 1 mm x 3 mm |
| Input voltage | +4.75 V to +5.25 V |
| Max. Input voltage | +6 V |
| Max. Input current | 40 mA |
| Count sensitivity at 300 nm Typ. | 2.1 x 105 s-1・pW-1 |
| Count sensitivity at 400 nm Typ. | 2.7 x 105 s-1・pW-1 |
| Count sensitivity at 500 nm Typ. | 2.3 x 105 s-1・pW-1 |
| Count sensitivity at 600 nm Typ. | 1.7 x 105 s-1・pW-1 |
| Count sensitivity at 700 nm Typ. | 9.6 x 104 s-1・pW-1 |
| Count sensitivity at 800 nm Typ. | 2.1 x 104 s-1・pW-1 |
| Count linearity | 5.0 x 106 s-1 |
| Dark count Typ. | 100 s-1 |
| Dark count Max. | 500 s-1 |
| Pulse-pair resolution | 20 ns |
| Output pulse width | 10 ns |
| Output pulse height (at load resistance 50 Ω) Min. | +2.0 V |
| Output pulse height (at load resistance 50 Ω) Typ. | +2.2 V |
| Recommended load resistance | 50 Ω |
| Signal output logic | Positive logic |
| Excessive light detection output (Excessive light incident) Min. | +3.5 V |
| Excessive light detection output (Normally) Max. | +0.5 V |
Block diagram
Dimensional outline (Unit mm)
Signal input/output
| Cable | Color | Signal type |
|---|---|---|
| UL1430 AWG26 | Black | GND |
| Red | Low voltage input (+5 V) | |
| Blue | Over light detection output | |
| RG-174/U | - | Signal output / Signal GND (Coaxial) |
Details of input window
Cross section
- Confirmation
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