Model	Pk Volts	Pk Current (A)	Pk Power (W)	Window
EP-3872	2.20	1.10	2.40	Sapphire
EP-3962	2.60	1.05	2.70	Sapphire
EP-3963	3.00	1.00	3.00	Sapphire
EP-3964	3.5	1.00	3.5	Sapphire
EP-3965	3.5	2.00	7.2	Sapphire

Pulsable/Steady State NiCr Filament Source (TO-8)

Model	Pk Volts	Pk Current (A)	Pk Power (W)	Window
EF-8530	3.5	1.3	3.9	None
EF-8531	3.5	1.3	3.9	Sapphire
EF-8532	3.5	1.3	3.9	CaF2
EF-8533	3.5	1.3	3.9	ZnSe

Steady State Kanthal Filament Source (TO-8)

Model	Pk Volts	Pk Current (A)	Pk Power (W)	Window
EK-8520	3.00	1.48	4.4	None
EK-8521	3.00	1.48	4.4	Sapphire
EK-8522	3.00	1.48	4.4	CaF2
EK-8523	3.00	1.48	4.4	ZnSe