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Products / Light Analysis /Photodetectors /Photomultiplier Tubes (PMTs) /Photomultiplier Tube Head-On (Tube Only) / STN2021 /

Photomultipliers Tube Head-On (Tube Only), Diameter 2.5", Cathode Effective Diameter Min. 58mm, Spectral Response Range 290-650nm, Quantum Efficiency 18%, Cathode Luminous Sensitivity Typ. 70μA/lm, Cathode Blue Sensitivity Typ. 9μA/lmf, Anode Sensitivity Typ. 35A/lm, Gain Typ. 5×10^5, Rise Time 1.8ns

MODEL: STN2021

6-8 weeks Drawings

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* The prices are indicative only. Please contact us for an official quote. This is single product page, for detail specification please refer to product main page

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	Availability	Reference Price
STN4031 Photomultipliers Tube Head-On (Tube Only), Diameter 3", Spectral Response Range 290-650nm, Peak Wavelength of Radiant Sensitivity Typ. 420nm, Cathode Blue Sensitivity Typ.11.5μA/lmf, Anode Sensitivity Typ. 30A/lm, Gain Typ. 2.73×10^5 Rise Time Typ. 6ns	6-8 weeks	Request for quote
STN4022 Photomultipliers Tube Head-On (Tube Only), Diameter 2", Spectral Response Range 290-650nm, Peak Wavelength of Radiant Sensitivity Typ. 420nm, Cathode Blue Sensitivity Typ.10μA/lmf, Anode Sensitivity Typ. 30A/lm, Gain Typ. 2.73×10^5 Rise Time Typ. 6ns	6-8 weeks	Request for quote
STN4021-3 Photomultipliers Tube Head-On (Tube Only), Diameter 2", Cathode Effective Diameter Min. 46mm, Spectral Response Range 290-650nm, Quantum Efficiency Peak Wavelength Typ. 380nm, Cathode Luminous Sensitivity Min. 60μA/lm, Cathode Blue Sensitivity Min. 7μA/lmf, Anode Sensitivity Typ. 400A/lm, Gain Typ. 1.6×10^6, Rise Time Min. 7ns	6-8 weeks	Request for quote
STN4021-2 Photomultipliers Tube Head-On (Tube Only), Diameter 2", Cathode Effective Diameter Min. 46mm, Spectral Response Range 290-650nm, Quantum Efficiency Peak Wavelength Typ. 380nm, Cathode Luminous Sensitivity Min. 60μA/lm, Cathode Blue Sensitivity Min. 9μA/lmf, Anode Sensitivity Typ. 1250A/lm, Gain Typ. 1.6×10^7, Rise Time Min. 7ns	6-8 weeks	Request for quote
STN4021-1 Photomultipliers Tube Head-On (Tube Only), Diameter 2", Cathode Effective Diameter Min. 46mm, Spectral Response Range 290-650nm, Quantum Efficiency Peak Wavelength Typ. 380nm, Cathode Luminous Sensitivity Min. 60μA/lm, Cathode Blue Sensitivity Min. 10.5μA/lmf, Anode Sensitivity Typ. 2000A/lm, Gain Typ. 2.5×10^7, Rise Time Min. 7ns	6-8 weeks	Request for quote
STN2041 Photomultipliers Tube Head-On (Tube Only), Diameter 4", Spectral Response Range 290-650nm, Quantum Efficiency@410nm Typ.28%, Top Detection Efficiency Typ. 24%, Top Collection Efficiency 90%, Gain Typ. 5×10^6, Dark Count Rate@0.2pe at Room Temperature Max. 1000Hz, Anode Pulse Rise Time Typ. 2.7ns	6-8 weeks	Request for quote
STN2031 Photomultipliers Tube Head-On (Tube Only), Diameter 3", Spectral Response Range 290-650nm, Quantum Efficiency@410nm Typ.28%, Quantum Efficiency@450nm Typ. 24%, Gain Typ. 1×10^7, Rise Time 1.9ns	6-8 weeks	Request for quote
STN2018 Photomultipliers Tube Head-On (Tube Only), Diameter 1", Cathode Effective Diameter Min. 22mm, Spectral Response Range 290-650nm, Quantum Efficiency Peak Wavelength Typ. 380nm, Quantum Efficiency 12%, Cathode Luminous Sensitivity @25℃ Typ. 40μA/lm, Cathode Blue Sensitivity @25℃ Typ. 6μA/lm, Anode luminous sensitivity@25℃ Typ. 20A/lm, Gain@25℃ Typ. 5×10^5, Rise Time 1.5ns	6-8 weeks	Request for quote
STN2017 Photomultipliers Tube Head-On (Tube Only), Diameter 1", Cathode Effective Diameter Min. 22mm, Spectral Response Range 290-650nm, Quantum Efficiency Peak Wavelength Typ. 380nm, Cathode Luminous Sensitivity Typ. 60μA/lm, Cathode Blue Sensitivity Typ. 10μA/lm, Gain Typ. 7×10^6, Rise Time 1.4ns	6-8 weeks	Request for quote
STN2016 Photomultipliers Tube Head-On (Tube Only), Diameter 1", Cathode Effective Diameter Min. 25mm, Spectral Response Range 290-650nm, Quantum Efficiency Peak Wavelength Typ. 380nm, Cathode Luminous Sensitivity Typ. 80μA/lm, Cathode Blue Sensitivity Typ. 11μA/lm, Anode Sensitivity Typ. 200A/lmf, Gain Typ. 4×10^6, Rise Time 1.9ns	6-8 weeks	Request for quote
STN2014-3 Photomultipliers Tube Head-On (Tube Only), Diameter 1", Cathode Effective Diameter Min. 22mm, Spectral Response Range 290-650nm, Quantum Efficiency Peak Wavelength Typ. 380nm, Cathode Luminous Sensitivity Typ. 60μA/lm, Cathode Blue Sensitivity Typ. 9μA/lm, Anode Blue Sensitivity Typ. 30A/lm, Gain Typ. 7×10^6, Anode Dark Current @1100V Max. 20nA, Rise Time 1.2ns	6-8 weeks	Request for quote
STN2014-2 Photomultipliers Tube Head-On (Tube Only), Diameter 1", Cathode Effective Diameter Min. 22mm, Spectral Response Range 290-650nm, Quantum Efficiency Peak Wavelength Typ. 380nm, Cathode Luminous Sensitivity Typ. 60μA/lm, Cathode Blue Sensitivity Typ. 9μA/lm, Anode Blue Sensitivity Typ. 30A/lm, Gain Typ. 7×10^6, Anode Dark Current @1050V Typ. 3nA, Dark Count Rate Max. 500Hz, Rise Time 1.2ns	6-8 weeks	Request for quote
STN2014-1 Photomultipliers Tube Head-On (Tube Only), Diameter 1", Cathode Effective Diameter Min. 22mm, Spectral Response Range 290-650nm, Quantum Efficiency Peak Wavelength Typ. 380nm, Cathode Luminous Sensitivity Typ. 60μA/lm, Cathode Blue Sensitivity Typ. 9μA/lm, Anode Blue Sensitivity Typ. 30A/lm, Gain Typ. 7×10^6, Anode Dark Current @1000V Typ. 3nA, Dark Count Rate Max. 100Hz, Rise Time 1.2ns	6-8 weeks	Request for quote
STN2013-3 Photomultipliers Tube Head-On (Tube Only), Diameter 1 1/8", Cathode Effective Diameter Min. 25mm, Spectral Response Rang 290-650nm, Quantum Efficiency Peak Wavelength Typ. 380nm, Cathode Luminous Sensitivity Typ. 80μA/lm, Cathode Blue Sensitivity Typ. 11μA/lmf, Anode Blue Sensitivity Typ. 30A/lmf, Gain Typ. 7×10^6, Dark Count Rate Max. 1000Hz, Rise Time Typ. 1.9ns	6-8 weeks	Request for quote
STN2013-2 Photomultipliers Tube Head-On (Tube Only), Diameter 1 1/8", Cathode Effective Diameter Min. 25mm, Spectral Response Rang 290-650nm, Quantum Efficiency Peak Wavelength Typ. 380nm, Cathode Luminous Sensitivity Typ. 80μA/lm, Cathode Blue Sensitivity Typ. 11μA/lmf, Anode Blue Sensitivity Typ. 30A/lmf, Gain Typ. 7×10^6, Dark Count Rate Max. 300Hz, Rise Time Typ. 1.9ns	6-8 weeks	Request for quote
STN2013-1 Photomultipliers Tube Head-On (Tube Only), Diameter 1 1/8", Cathode Effective Diameter Min. 25mm, Spectral Response Rang 290-650nm, Quantum Efficiency Peak Wavelength Typ. 380nm, Cathode Luminous Sensitivity Typ. 80μA/lm, Cathode Blue Sensitivity Typ. 11μA/lmf, Anode Blue Sensitivity Typ. 30A/lmf, Gain Typ. 7×10^6, Dark Count Rate Max. 140Hz, Rise Time Typ. 1.9ns	6-8 weeks	Request for quote
STN2002 Photomultipliers Tube Head-On (Tube Only), Diameter 0.5", Cathode Effective Diameter 10mm, Spectral Response Range 290-650 nm, Quantum Efficiency Peak Wavelength 380nm, Cathode Luminous Sensitivity Typ. 100μA/lm, Cathode Blue Sensitivity Typ. 8 μA/lmf, Anode Sensitivity Typ 100 A/lm, Gain 6×10^6, Anode Dark Current Typ. 1nA, Rise Time 2.1ns	6-8 weeks	Request for quote

Compatible

Compare	Model		Drawings & Specs	Availability	Reference Price

Photomultipliers Tube (Tube Only) – STN2021

This STN2021 is a head-on side photomultiplier tube with 2.5" diameter and 9 stages.

Feature

• Fast response, high pulse linearity

Application

• Radiation measurement

Product Specifications

Parameter		Description
Type		Head-on Type
Diameter		2.5"
Window Material		Borosilicate Glass
Photocathode Material		Bialkali
Dynode Structure		Linear Focused
Stage		9
STN2021		Min.	Typ.	Max.	Unit.
Cathode Parameters	Cathode Effective Diameter	58	/	/	mm
	Spectral Response Range	290-650			nm
	Quantum Efficiency	/	18	/	%
	Luminous Sensitivity	/	70	/	μA/lm
	Blue Sensitivity	8	9	/	μA/lmf
Anode Parameters	Anode Sensitivity	/	35	/	A/lm
	Supply Voltage	1500	1800	3000	V
	Gain	/	5×10⁵	/	/
	Anode Dark Current	/	3	5	nA
	Maximum Pulse Linear Current@10ns Time Width@10% Linear Deviation	/	300	/	mA
Time Response	Rise Time	/	1.8	/	ns