1ZH24B PENTODE
Miniature high-frequency pentode designed for high-frequency voltage amplification.
Oxide heater cathode.
Works in any position.
Manufactured in a glass tube.
Minimum service time 5000 hours
Maximum weight 4 gram
Basic Technical Specification of 1ZH24B pentode:
Nominal Electrical Parameters:
• Filament voltage, V ...... 1,2 ±0,12
• Filament current, mA ...... 13 ±2
• Anode voltage, V ...... 60
• Second grid voltage, V ...... 45
• First grid voltage, V ...... 0
• Anode current, mA ...... 0,95±0,45
• Second grid current, mA ...... max 0,1
• Mutual conductance, mA/V ...... 0,9±0,3
• Mutual conductance at filament voltage 0,95 V, mA/V ...... min 0,48
• Input impedance at frequency 60 MHz, MΩ..... min 100
• Internal noise resistance at frequency 30 MHz, Ω..... max 6
• Reversed first grid current at first grid voltage - 1 V and grid resistance 0,5 MΩ, kΩ...... max 6
• Microphonic voltage at anode resistance 10kΩ, at vibration frequency 50 Hz and acceleration 10g, m/s2 effective, mA ...... max 0,1
• Second grid current, mA ...... max 50
Maximum permissible electrical values:
• Maximum filament voltage, V ....... 1,4
• Minimum filament voltage, V ....... 0,95
• Maximum anode voltage, V ....... 120
• Maximum second grid voltage, V ....... 90
• Maximum anode dissipation, W ...... 0,12
• Maximum cathode current, mA ...... 1,6
• Maximum grid leak, mΩ...... 2,2
• Maximum tube temperature, оС....... 105
• Input capacitance, pF ..... 3,6±0,4
• Output capacitance, pF ..... 2,95±0,45
• Transfer capacitance, pF ..... 0,006
• Anode-cathode, pF ..... max 0,025
Environmental Impacts:
• Maximum ambient temperature, оС....... +85
• Minimum ambient temperature, оС....... 60
• Maximum atmospheric pressure, mmHg ....... 5
• Maximum relative humidity at ambient temperature +40 оС, % ....... 98
• Maximum linear acceleration, g ...... 100
• Anode current change at linear acceleration 100 g, % ...... ±20
• Maximum acceleration during vibration testing, g ....... 10
• Minimum acceleration during single impact test, g ....... 500
• Maximum acceleration during multiple impact test
(4000 impacts) at 40-60 impacts per minute, g ....... 150
