H13543-300

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Product Specifications: H13543-300

Category	Parameter	Specification / Description
General Model Information	Product Code	H13543-300
	Product Type	Compact PMT Module with Built-in High Voltage Power Supply (HVPS)
	Manufacturer	Hamamatsu Photonics K.K.
	Key Feature	This very high-number suffix almost certainly denotes a highly specialized, custom, or proprietary OEM variant. Its parameters cannot be inferred from standard models.
Photocathode	Material	Likely Bialkali (K-Cs-Sb) (but could be custom)
	Window Material	Likely Borosilicate Glass (could be UV glass or other)
	Effective Area	Likely 8 mm diameter (could be different)
	Spectral Response Range	Could be standard (300-650 nm) or modified
	Peak Wavelength	Could be standard (~420 nm) or customized
Dynode System	Structure	Likely 10-stage
Performance	Cathode Luminous Sensitivity	Defined by unique OEM specifications
	Anode Luminous Sensitivity	Defined by unique OEM specifications
	Gain	May be calibrated to a non-standard value or range
	Dark Current	Custom OEM specification, unrelated to standard grades
	Anode Rise Time	~ 2.2 ns (if standard tube is used)
	Output Signal	Analog current output (BNC assumed)
Power Supply (Most Critical Area)	Input Operating Voltage	Highly likely to be NON-STANDARD (e.g., +15 V, +24 V, +5.5 V). MUST BE CONFIRMED.
	Current Consumption	Dependent on custom input voltage and internal HVPS design
	HV Output Range	May be fixed to a single voltage or have a completely custom adjustment range and logic.
	HV Adjustment	Control voltage range and logic are likely custom (e.g., 0-5V, 0-3.3V, or a different mapping).
Operating Conditions	Operating Temperature	As defined by unique OEM specification
	Storage Temperature	As defined by unique OEM specification
	Warm-up Time	Typically < 10 min (but confirm)
Mechanical & Interface	Weight	Approx. 100 g (if housing is standard)
	Magnetic Shielding	Integrated mu-metal shield (likely)
	Signal Output Connector	BNC (assumed standard)
	Power/Control Connector	Pinout is almost guaranteed to be custom. DO NOT ASSUME standard wiring.