High Speed Photodetector, 300-1100 nm Battery Biased Silicon Detector, 1.2 GHz

The 818-BB-21 High Speed Silicon Optical Detector consists of a free-space 300 to 1100 nm Battery Biased Silicon detector with a 0.40 mm active diameter and a <300 ps rise time. It includes a built-in bias supply consisting of three standard 3 V lithium cells (9 V total bias) and a 50 ohm BNC connector output. The batteries are easily replaceable and by disconnecting the detector from the oscilloscope input, when not in use, you can extend the lifetime of the batteries. It is equivalent to Coherent's Model ET-2030 (P/N 120-10011-0001).

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

An 8-32 threaded hole at the bottom of 818-BB biased photoreceivers allows for optical post mounting.

Handle With ESD Care

These detectors are very susceptible to damage by electrostatic discharge (ESD). Please use ESD protective measures, like the FK-STRAP , when unpacking and handling these devices.

Specifications

Technical Specs

Optical Input
Free Space
Device Type
Biased Detector
Detector Diameter
0.4 mm
Active Area
0.4 mm²
Detector Material
Silicon
Detector Type
PIN
Acceptance Angle
10°
Wavelength Range
300-1100 nm
3 dB Bandwidth
DC to 1.2 GHz
Rise Time
300 ps
Responsivity
0.47 A/W @ 830 nm

Amplified
No
Bias Voltage
9 V
Cut-off Frequency
1.2 GHz
Dark Current
<0.1 nA
Junction Capacitance
<1.5 pF
Measurement Type
Beam shape, frequency
Reverse Breakdown
20 V
NEP
<0.01 pW/√Hz
Fall Time
<300 ps
Saturation Current
3 mA
Thread Type
8-32 and M4

Optical Input
Free Space
Device Type
Biased Detector
Detector Diameter
0.4 mm
Active Area
0.4 mm²
Detector Material
Silicon
Detector Type
PIN
Acceptance Angle
10°
Wavelength Range
300-1100 nm
3 dB Bandwidth
DC to 1.2 GHz
Rise Time
300 ps
Responsivity
0.47 A/W @ 830 nm

Amplified
No
Bias Voltage
9 V
Cut-off Frequency
1.2 GHz
Dark Current
<0.1 nA
Junction Capacitance
<1.5 pF
Measurement Type
Beam shape, frequency
Reverse Breakdown
20 V
NEP
<0.01 pW/√Hz
Fall Time
<300 ps
Saturation Current
3 mA
Thread Type
8-32 and M4

Resources & Downloads

3D Product Models

2D Product Drawings

Silicon Photodetectors Datasheet(663 kB, PDF)
Non-amplified Photodetectors User's Manual(788.3 kB, PDF)
818-BB Battery Installation(1.2 MB, PDF)
MKS EU RoHS2 - 818-BB Detectors(287.8 kB, PDF)
Optical Receiver Finder

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