H14121-40

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Product Specifications: H14121-40

Category	Parameter	Specification / Description
General Model Information	Product Code	H14121-40
	Product Type	Compact PMT Module with Built-in High Voltage Power Supply (HVPS)
	Manufacturer	Hamamatsu Photonics K.K.
	Key Feature	This model is part of a different series (H14121) from the H14119, indicating potential differences in the PMT type, size, or internal circuitry. The “-40” suffix suggests a specific performance grade.
Photocathode	Material	Likely Bialkali (K-Cs-Sb) or multi-alkali for a different response
	Window Material	Borosilicate Glass
	Effective Area	Likely different from H14119 (e.g., could be 3mm, 13mm, or a square format)
	Spectral Response Range	Dependent on photocathode type
	Peak Wavelength	Dependent on photocathode type
Dynode System	Structure	8-stage or 10-stage (series dependent)
Performance	Cathode Luminous Sensitivity	Defined by the “-40” grade specifications
	Anode Luminous Sensitivity	Defined by the “-40” grade specifications
	Gain	Typically > 10^6 (at specified control voltage)
	Dark Current (max. at rated voltage)	Specification unique to the H14121 series and the -40 grade.
	Anode Rise Time	Varies by PMT size and structure
	Output Signal	Analog current output
Power Supply	Input Operating Voltage	+12 V DC (±10%) or +5 V DC (Must be confirmed)
	Current Consumption	Dependent on input voltage and internal design
	HV Output Range	Adjustable via control voltage (e.g., 0 V to +1 V)
	HV Adjustment	Linear control via external voltage (0 V = min HV, +1 V = max HV)
Operating Conditions	Operating Temperature	0 °C to +50 °C
	Storage Temperature	-20 °C to +60 °C
	Warm-up Time	< 10 minutes to specified stability
Mechanical & Interface	Weight	Varies with PMT size and housing
	Magnetic Shielding	Integrated mu-metal shield
	Signal Output Connector	BNC
	Power/Control Connector	4-pin or 5-pin locking connector (Pinout may differ from H14119)