The 6H30 is a miniature dual triode that is all the rage today. It comes from Russia and people love it. It is similar to the 6DJ8, but differs in that it is much more buffed: it has a lower rp and mu , plus a greater plate dissipation. However, it requires much more heater current than the 6DJ8. It can be used in a phase splitter and driver circuits in power amplifiers. The amazing spec for this tube is its peak pulse current output of 2-3 amperes! In other words, this tube could be readily used as the output tube in a small OTL dynamic headphone amplifier. In addition, this tube is rated for 10000 hrs use.

Maximum Ratings
    Plate dissipation:  4 watts
    Cathode current (avg.): 40 mA
    Cathode current (pulse): 2-3 A !!!!
    Max DC plate voltage:  250V
    Heater-to-cathode voltage: 400v

Inter-electrode Capacitance
    Input : 6.3 pF
    Output : 2.4 pF

AC Characteristics
   Amplification factor (µ): 15
   Plate resistance (rp): 2000 ohms
   transconductance (Gm): 7.6 mA/Voltage

Heater
    Voltage:   6.3V @  Current: 0.825 A

This is a FREE program John Broskie wrote to display the plate curves for this tube dynamically. It will work with Win 9x/NT/2000/Me.

To download the installation file for this program click here and choose the link to the Tube CAD Journal Companion Software. 

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