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Specialized - Klystron ·Klystron

SZ53

Rugged wide-band low-voltage reflex klystron local oscillator covering approximately 8.5–9.655 GHz, emphasizing low noise, low warm-up drift, and stability.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized
Sections
1
Base
-
Socket code
-
Base pins
-
Nominal heater
6.3 V / 1.2 A

Description

Ferranti SZ53 is a rugged wide-band reflex klystron local oscillator covering about 8.5-9.655 GHz. It emphasizes low-voltage operation, low noise, small warm-up drift and high stability, and is a direct replacement for VA201B.

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base
-
Socket code
-
Base pins
-
Nominal heater voltage
6.3 V
Nominal heater current
1.2 A
Parallel heater voltage
-
Parallel heater current
-
Series capable
No

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

Klystron

X-ray radiationInterelectrode capacitances
Max plate voltage
350 V

Klystron beam/resonator anode voltage is promoted to MaxPlateVoltage where applicable; original published labels and conditions are retained in parameter rows.

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 Ferranti

Published operating points and test conditions from this source.

SECTION 1

Klystron

Other

  • Heater voltage

    6.3 V

    Nominal

  • Heater voltage absolute limits

    5.7 to 6.9 V

  • Heater current

    1.2 A

    Nominal ±10%

  • Maximum resonator voltage

    350 V

  • Maximum resonator current

    60 mA

  • Maximum negative reflector voltage

    500 V

    Magnitude; reflector negative

  • Maximum reflector current

    10 uA

  • Maximum heater-cathode voltage

    45 V

  • Maximum body temperature

    200 C

  • Reflector voltage at 250 V resonator

    -120 to -40 V

    Mode 6 3/4

  • Maximum resonator current at 250 V

    45 mA

  • Power output at 250 V

    12 to 66 mW

  • Reflector voltage at 300 V resonator

    -200 to -80 V

    Mode 5 3/4

  • Maximum resonator current at 300 V

    60 mA

  • Power output at 300 V

    40 to 120 mW

Frequency

  • Operating frequency

    8500 to 9655 Mc/s

    Mechanical tuning range

Characteristic

  • Electronic tuning range at 250 V

    30 Mc/s

  • Electronic tuning range at 300 V

    20 Mc/s

  • Temperature coefficient

    -100 to 50 kc/s/C

  • Noise

    <3e-14 W/Mc/s/mW

    RF noise metric

  • Maximum tuner side-thrust error

    0.5 Mc/s