RGN2504 Data Sheet

This tube feature a series connected filament for both diodes together, which has certain advantages.

This tube can supply 200mA with a C-L-C filter. 


High Resolution


Guarantee program for first owner.

At EML we have the normal guarantee. In addition to that, the first owner can register the tube within 4 weeks after receival, at the Emission Labs website, to participate in the 5 years guarantee program.

Our Guarantee conditions

Register here for the 5years guarantee


RGN2504 Filament Ratings

Filament Voltage
4Volt (AC or DC)
Tolerance on filament voltage
Filament Current

RGN2504 Maximum Conditions

AC input (*2) 2x 300V 2x 400V 2x 500V
DC output 200mA 150mA 120mA
First Capacitor 60uF 50uF 50uF
Transformer minimum DC resistance (*1) 2x 70R 2x 100R 2x 120R
*1) This is minimum value. If transformer DC resistance is too low, a series resistors must be used.

*2) For each other transformer voltage, maximum allowed DC output current is calculated as follows:

I (in mA) = 60000 / Transformer AC voltage


RGN2504 Mechanical Data

Size including Socket
(but excluding pins)

145 x 58 mm

Weight of one tube: 140 Gram

Shipment weight for pair in gift box: 350 Gram

Pin 1: Anode1
Pin 4: Anode2
Pin2: Filament
Pin3: Filament