C7247-01

Delivery:

Payment:

Means of Payment

For your convenience, we accept multiple payment methods in USD, including PayPal, Credit Card, and wire transfer.

RFQ (Request for Quotations)

It is recommended to request for quotations to get the latest prices and inventories about the part.
Our sales will reply to your request by email within 24 hours.

IMPORTANT NOTICE

1. You’ll receive an order information email in your inbox. (Please remember to check the spam folder if you didn’t hear from us).
2. Since inventories and prices may fluctuate to some extent, the sales manager is going to reconfirm the order and let you know if there are any updates.

Product Specifications: Hamamatsu C7247-01

Category	Parameter	Specification / Description
General Information	Product Code	C7247-01
	Product Type	Head-On Type Photomultiplier Tube
	Variant Description	Selected version of the C7247 multialkali PMT, optimized for low dark current. Essential for high signal-to-noise ratio in NIR applications.
Photocathode	Type	Multialkali
	Form	Semi-Transparent
	Effective Area	Diameter: 51 mm (2 inches)
	Window Material	Borosilicate Glass
Spectral Response	Peak Wavelength	~440 nm
	Response Range	300 nm to 850 nm (Extended Red / NIR response)
Dynode System	Structure	Venetian Blind (10 stages)
	Material	Cu-Be
Gain	Typical Value	1 x 10<sup>6</sup> (at 1000 V)
	Maximum	5 x 10<sup>7</sup> (at 1500 V)
Voltage	Operating Range (Anode to Cathode)	-1000 V to -1500 V DC
	Polarity	Negative High Voltage (Cathode)
	Recommended Divider Ratio	Requires an external voltage divider circuit.
Current	Average Anode Current	100 μA (max)
	Average Output Current (Linear)	10 mA (max, for pulsed operation)
Performance	Dark Current (Typical)	10 nA (at 1000 V, room temp) (This is the key selection criteria – significantly lower than the standard C7247)
	Dark Current (Maximum Guaranteed)	< 30 nA (e.g., at 1000 V) (This guaranteed maximum is the defining feature of the -01 variant)
	Anode Luminous Sensitivity	40 μA/lm (Typ., at 2856 K)
	Cathode Luminous Sensitivity	150 μA/lm (Typ., at 2856 K)
	Rise Time	14 ns
	TTS (Transit Time Spread)	5.0 ns
Mechanical	Housing	Head-on type with stem at base
	Base	Requires external socket (e.g., Hamamatsu E1198-07)
	Overall Length	Approx. 135 mm
	Bulb Diameter	Approx. 58 mm
Environmental	Operating Temperature	-20 °C to +50 °C
	Storage Temperature	-20 °C to +60 °C
	Magnetic Shielding	Requires a mu-metal magnetic shield (e.g., Hamamatsu A50-XX) for stable operation.
Applications		Low-light NIR detection, Sensitive Spectroscopy, Biomedical Analyzers (e.g., for red fluorescence dyes), Low-flux Flame Detection.