Skip to main content
Tube Tinker — Electron Tube Database
Alternatives & variationsDownload PDF datasheet

Voltage - Triode (single high frequency) ·Triode

E88C

Special-quality UHF triode for professional high-frequency amplifier service.

Directly heatedCold cathodeCommon cathodeDissimilar
Sections
1
Base
Noval
Socket code
B9A
Base pins
9
Nominal heater
6.3 V / 155 mA

Description

E88C is a Triode device. Special-quality low-noise VHF/UHF grounded-grid aerial-amplifier triode.

Socket description

Small-button Noval 9-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
Noval
Socket code
B9A
Base pins
9
Nominal heater voltage
6.3 V
Nominal heater current
155 mA
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

Noval - Terminal pinout

Electrical assignments shared by every tube using this base designation.

No verified pinout is recorded for this base designation.

Section ratings

1 physical section, each with unique specifications.

Section 1

Triode

X-ray radiationInterelectrode capacitances
Plate resistance
4800 Ω
Transconductance
0.0135 S
Amplification factor
65
Max plate dissipation
2.6 W
Max cathode current
16.5 mA

Special-quality low-noise VHF/UHF grounded-grid aerial-amplifier triode.

Source-dependent data

Operating conditions by source

Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.

Data set 01

1963 Philips Electron Tubes Handbook V1a

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Plate voltage

    160 V

  • Grid voltage

    -1.25 V

  • Plate current

    12.5 mA

Characteristic

  • Transconductance

    13500 uS

  • Amplification factor

    65

  • Plate resistance

    4.8 kOhm

  • Equivalent noise resistance

    240 ohm

  • Noise figure at 850 MHz

    10 dB

Capacitance

  • Anode-to-grid capacitance

    1.2 pF

Data set 02

1963 Siemens

Published operating points and test conditions from this source.

SECTION 1

Triode

Other

  • Frequency limit

    1000 MHz

Characteristics

  • Noise figure

    7.7 dB

    800MHz

  • Cathode resistance

    230 Ohm

Data set 03

1999 Philips E-Z

Published operating points and test conditions from this source.

SECTION 1

Triode

Characteristic

  • Life test

    10000 h

    Published datasheet value

  • Heater voltage Vg

    6.3 V

    Published datasheet value

  • Heater current Ig

    155 mA

    Published datasheet value

  • Anode current Iy

    12.5 mA

    Published datasheet value

  • Mutual conductance S

    13.5 mA/V

    Published datasheet value

  • Noise figure at

    850 MHz

    Published datasheet value

  • Anode voltage Va

    160 V

    Published datasheet value

  • Equivalent noise resistance Req

    240 Q

    Published datasheet value

  • Frequency

    850 MHz

    Published datasheet value

  • Anode supply voltage Vba

    170 V

    Published datasheet value

  • Cathode resistor R

    820 Q

    Published datasheet value

  • Grid supply voltage +Vbg

    9 V

    Published datasheet value

  • Anode current I

    12.5 mA

    Published datasheet value

  • Anode supply voltage Vba

    161 V

    Published datasheet value

  • Cathode resistor Rk

    100 Q

    Published datasheet value

  • and heater Vif =

    125 V

    Published datasheet value

  • Grid to cathode and heater Cg/kf |

    -4.4 pF

    Published datasheet value

  • The tube is subjected during

    32 h

    Published datasheet value

  • Production samples are tested during

    10000 h

    Published datasheet value

  • Anode dissipation Wy max

    2.6 W

    Published datasheet value

  • Cathode current Ik max

    16.5 mA

    Published datasheet value

  • Grid disspation Wg max

    50 mW

    Published datasheet value

  • Cathode positive Vif(kH) max

    125 V

    Published datasheet value

  • Heater voltage: The average heater voltage should be

    6.3 V

    Published datasheet value

  • Variation of the heater voltage exceeding the range of

    6 V

    Published datasheet value

  • Frequency f

    800 MHz

    Published datasheet value

  • Bandwidth

    8 MHz

    Published datasheet value

  • Anode current Iy

    12.8 mA

    Published datasheet value

  • Z =

    60 Q

    Published datasheet value