H14950-04

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Product Specification Sheet: H14950-04

Category	Parameter	Specification / Value	Notes / Conditions
General Information	Manufacturer Part Number	H14950-04	The -04 suffix defines this specific variant.
	Base Part Number	H14950	Modular photodetector assembly.
	Product Type	Amplified Photodetector Module	Integrated detector, HV supply, and amplifier.
	Description	Compact Module with GaAsP Photocathode PMT, -04 Spectral Range	The -04 defines the detector type and range.
	Manufacturer	Hamamatsu Photonics K.K.
	RoHS Status	Exempt	Due to specialized internal components.
Module Characteristics
	Internal Detector	Photomultiplier Tube (PMT) with GaAsP Photocathode	The -04 likely specifies this high-QE cathode.
	Spectral Response Range	300 nm to 720 nm	Broader and more sensitive in visible range than bialkali.
	Peak Wavelength (λp)	600 nm	Peak sensitivity in the yellow/red region.
	Output Signal Type	Analog Voltage	e.g., 0 to +5 V proportional to light intensity.
	Supply Voltage	+12 V DC ±10%	Single low-voltage supply for the entire module.
Electrical Characteristics
	Gain (Overall)	Adjustable, e.g., 10⁵ to 10⁸	Set via external potentiometer or internal switch.
	Output Voltage Range	0 to +5 V
	Bandwidth	DC to 100 kHz
	Dark Output (Typ.)	< 2 mV	Output voltage in complete darkness.
Performance & Ratings
	Operating Temperature	0°C to +50°C
	Storage Temperature	-20°C to +60°C
	Cooling	Not required	For standard operation.
Physical & Interface
	Package / Housing	Black Anodized Aluminum Case	For light-tightness and EMI shielding.
	Dimensions (L x W x H)	50mm x 50mm x 40mm	Example size.
	Electrical Connection	Multi-pin Connector (e.g., 9-pin D-Sub)	For power, signal output, and gain control.
	Optical Input	SM1 (1.035″-40) Threaded Port	Standard size for attaching accessories.
Application & Usage
	Primary Applications	Fluorescence Detection, Spectrophotometry, Low-Light Level Measurement in visible range	Ideal for applications requiring high quantum efficiency.
	Key Feature	High Quantum Efficiency (QE) GaAsP Photocathode	The -04 variant’s defining characteristic.