PSVANE ACME 274B A274B Vacuum Rectifier Tube Replace 5U4G 5AR4 GZ34 Vintage Hifi Audio Tube AMP DIY Upgrade 1PC

274B is very similar with 5U4G and 5Z3P, which can be replaced by each other.

Uf………………5V
If……………….. 2.5A

anode inverse peak voltage……………1550V
anode peak current………………..………750mA

Recommend working condition

Anode supply voltage             2×500V

Each arm impedance                  75Ω

Filter capacitor                            4μF

Rectifier current                        ≧220mA