High Speed Photodetector, 320-1100 nm Biased Silicon Detector, 25 MHz
Model: 818-BB-40
Product Series Overview
Biased Free Space Optical DetectorsThe 818-BB-40 High Speed Silicon Detector consists of a free-space 320 to 1100 nm externally biased Silicon photodetector with a 4.57 mm active diameter and a <30 ns rise time. This detector comes with a 24 VDC external power supply. It includes a 50 ohm BNC connector output. It is a low-cost solution for ultra-fast measurements up to a 25 MHz bandwidth. This detectors are suitable for applications where detector rise time of <30 nsec are required for Q-switched and Ultrafast Laser output analysis. The 818-BB-40 comes with an external 24 VDC power supply. It is equivalent to Coherent's Model ET-2040 (P/N 120-10028-0001).
Silicon Free Space Optical Detectors
The 818-BB-21 and -40 consist of free-space, small and large area Silicon detectors, with rise times ranging from 300 ps to 1.5 ns. Each unit, other than the 818-BB-40, includes a built-in bias supply consisting of standard 3 V lithium cells and a 50 ohm BNC connector output. The 818-BB-40 comes with an external 24 VDC power supply.
Optical Post Mounting
Handle With ESD Care
Specifications
- Optical InputFree Space
- Device TypeBiased Detector
- Detector Diameter4.57 mm
- Detector MaterialSilicon
- Detector TypePIN
- Acceptance Angle60°
- Wavelength Range320-1100 nm
- 3 dB BandwidthDC to 25 MHz
- Rise Time30 ns
- Responsivity0.6 A/W @ 830 nm
- Output ConnectorBNC
- AmplifiedNo
- Bias Voltage24 V
- Cut-off Frequency>25 MHz
- Dark Current<10 nA
- Junction Capacitance<45 pF
- Reverse Breakdown50 V
- NEP<0.09 pW/√Hz
- Fall Time<30 ns
- Saturation Current2 mA
- Thread Type8-32 and M4
Resources & Downloads
3D Product Models
Literature
Silicon Photodetectors Datasheet(663 kB, PDF)
Manuals
Non-amplified Photodetectors User's Manual(788.3 kB, PDF)
Technical Notes
818-BB Battery Installation(1.2 MB, PDF)
MKS EU RoHS2 - 818-BB Detectors(287.8 kB, PDF) DS-042602 818-BB Detector Datasheet.pdf(1.7 MB, PDF)
2D Product Drawings
818-BB-40 Dimensional Drawing(266.5 kB, PDF)
Other
818-BB Manufacturer Part Cross-reference Chart(50 kB, PDF)
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