H14601-200

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Product Specification Sheet: H14601-200

Category	Parameter	Specification / Value	Notes / Conditions
General Information	Manufacturer Part Number	H14601-200	The -200 suffix defines this high-performance variant.
	Base Part Number	H14601	Typically denotes a 19mm diameter tube.
	Product Type	Head-On Type Photomultiplier Tube (PMT)
	Description	19mm PMT with High-Temperature Bialkali Photocathode, -1500V Operating Voltage	The -200 code defines these key attributes.
	Manufacturer	Hamamatsu Photonics K.K.
	RoHS Status	Exempt	Due to specialized glass and materials.
Optical Characteristics
	Spectral Response Range	300 nm to 650 nm	Standard visible light range.
	Peak Wavelength (λp)	420 nm	Slight peak shift is common for high-temp variants.
	Cathode Material	High-Temperature Bialkali	The -200 denotes this specialized, stable cathode.
	Window Material	Borosilicate Glass
Electrical & Gain Characteristics
	Operating Voltage (Variant -200)	-1500 V DC	The suffix indicates a higher voltage rating for higher gain.
	Number of Dynode Stages	10
	Gain (Typical)	1.0 x 10⁷	Significantly higher gain achievable at higher voltage.
	Dark Current (Typ.)	5 nA	At rated voltage and room temperature.
	Anode Current (Average)	100 µA
Performance & Ratings
	Operating Temperature	-20°C to +75°C	Wider/Higher temperature range is a key feature of the -200 variant.
	Storage Temperature	-40°C to +85°C
	Cooling	Required for optimal performance at upper temp range
Physical Characteristics
	Package / Shape	Head-On (Circular) / Cylindrical
	Base Type	8-Pin (Octal) Base
	Dimensions (Dia. x L)	19 mm (0.75 inch) diameter	Characteristic of the H14601 series.
	Weight	~35 g
Application & Usage
	Primary Applications	High-Temperature Environments, Oil Well Logging, High-Energy Physics, Medical Imaging (PET)
	Handle with Care	Extremely sensitive to light, mechanical shock, and humidity.	Keep in complete darkness until installed.