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3C45

Hydrogen thyratron designed for fast high-power pulse switching, using rapid ionization and deionization for pulse-modulator and network-discharge service.

Directly heatedCold cathodeCommon cathodeDissimilarSpecialized

Sections: 1
Base: -
Socket code: UX4
Base pins: 4
Nominal heater: 6.3 V / 2.25 A

Description

Hydrogen thyratron; the supplied 3C45 sheet is a cross-reference to the microwave-equipment chapter rather than a full data sheet.

Socket description

Medium-shell UX 4-contact

General specifications

Tube and section characteristics

Properties common to every published source and operating point.

Heater and base

Base: -
Socket code: UX4
Base pins: 4
Nominal heater voltage: 6.3 V
Nominal heater current: 2.25 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

Thyratron

X-ray radiationInterelectrode capacitances

Max plate voltage: 3000 V
Max cathode current: 35 A
Rectifier forward voltage drop: 150 V

Published maximum ratings and characteristics audited; remaining values retained densely in parameter table.

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

1962 ITT

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

THE [1]
3
THE 3C45 1S A UNIPOTENTIAL CATHODE, THREE ELEMENT HYDROGEN FILLED THYRATRON
THE [2]
5
THE 3C45 1S A UNIPOTENTIAL CATHODE, THREE ELEMENT HYDROGEN FILLED THYRATRON
THE [3]
1
THE 3C45 1S A UNIPOTENTIAL CATHODE, THREE ELEMENT HYDROGEN FILLED THYRATRON
FOR PRODUCING PULSE OUTPUTS OF
55 kW
FOR PRODUCING PULSE OUTPUTS OF 55 KW AT AN AVERAGE POWER LEVEL OF MORE
HEATER VOLTAGE [1]
6.3 V
HEATER VOLTAGE 6.3 5.7 6.6 VoLTS A.C,
HEATER VOLTAGE [2]
5.7 V
HEATER VOLTAGE 6.3 5.7 6.6 VoLTS A.C,
HEATER VOLTAGE [3]
6.6 V
HEATER VOLTAGE 6.3 5.7 6.6 VoLTS A.C,
HEATER CURRENT (AT [1]
6.3 A
HEATER CURRENT (AT 6.3 VoLrts) 2.0 2.5 AMPERES
HEATER CURRENT (AT [2]
2 A
HEATER CURRENT (AT 6.3 VoLrts) 2.0 2.5 AMPERES
HEATER CURRENT (AT [3]
2.5 A
HEATER CURRENT (AT 6.3 VoLrts) 2.0 2.5 AMPERES
Max. Peak ANODE VoLTAGE, FORWARD
3 V
Max. Peak ANODE VoLTAGE, FORWARD 3.0 KirLovoLTs
MiN. ANODE SuPPLY VOLTAGE
800 V
MiN. ANODE SuPPLY VOLTAGE 800 VoLTS D.C.
Max. Peak ANODE CURRENT
35 mA
Max. Peak ANODE CURRENT 35 AMPERES
Max. AVERAGE ANODE CURRENT
45 mA
Max. AVERAGE ANODE CURRENT 45 MiLLIAMPERES
Max. ANODE CURRENT RATE OF RISE
750 mA
Max. ANODE CURRENT RATE OF RISE 750 AMPERES/USECOND
Max. PEAK INVERSE TRIGGER VOLTAGE
200 V
Max. PEAK INVERSE TRIGGER VOLTAGE 200 VoiLTts
Max. ANODE DELAY TIME DRIFT
0.15
Max. ANODE DELAY TIME DRIFT 0.15 MIiICROSECOND
AMB IENT TEMPERATURE [1]
-500
AMB IENT TEMPERATURE -500 10 £900 Cenr.
AMB IENT TEMPERATURE [2]
10
AMB IENT TEMPERATURE -500 10 £900 Cenr.
AMB IENT TEMPERATURE [3]
900
AMB IENT TEMPERATURE -500 10 £900 Cenr.
PEAK NETWORK VOLTAGE
3 V
PEAK NETWORK VOLTAGE 3.0 KiLovoLTs
PuLsSE REPETITION RATE
2500
PuLsSE REPETITION RATE 2500 PuLses/SECOND
PuLse LENGTH
0.5
PuLse LENGTH 0.5 MICROSECOND
TR1IGGER VOLTAGE
200 V
TR1IGGER VOLTAGE 200 VoLTs
Peak Power OutPur (RESISTIVE LOAD [1]
92 W
Peak Power OutPur (RESISTIVE LOAD 92% ZN) h7.2 KiLowarTs
Peak Power OutPur (RESISTIVE LOAD [2]
2 W
Peak Power OutPur (RESISTIVE LOAD 92% ZN) h7.2 KiLowarTs
Peax ANODE CURRENT
35 A
Peax ANODE CURRENT 35 AMPERES
COOLING OF THE ANODE LEAD
1
COOLING OF THE ANODE LEAD 1S PERMISSIBLE, BUT THERE SHALL BE NO AIR BLAST
THE PEAK INVERSE VOLTAGE SHOULD NOT EXCEED l [1]
5 kV
THE PEAK INVERSE VOLTAGE SHOULD NOT EXCEED l.5 KV DURING THE FIRST 25
THE PEAK INVERSE VOLTAGE SHOULD NOT EXCEED l [2]
25 kV
THE PEAK INVERSE VOLTAGE SHOULD NOT EXCEED l.5 KV DURING THE FIRST 25
A. VOLTAGE [1]
175 V
A. VOLTAGE 175-250 VoLTs
A. VOLTAGE [2]
-250 V
A. VOLTAGE 175-250 VoLTs
THE TIME OF ANODE DELAY [1]
1
THE TIME OF ANODE DELAY 1S MEASURED BETWEEN THE 26 PERCENT POINT ON THE
THE TIME OF ANODE DELAY [2]
26
THE TIME OF ANODE DELAY 1S MEASURED BETWEEN THE 26 PERCENT POINT ON THE
TIME JITTER [1]
1 A
TIME JITTER 1S MEASURED AT THE 50 PERCENT POINT ON THE ANODE CURRENT
TIME JITTER [2]
50 A
TIME JITTER 1S MEASURED AT THE 50 PERCENT POINT ON THE ANODE CURRENT
|. HEATER
365
|. HEATER 365 max —
Published value
2
2. CATHODE
Published value
3
3. GRID
Published value [1]
4
4 HEATER & CATHODE TOP CAP CI '\'*r 426 wax
Published value [2]
426
4 HEATER & CATHODE TOP CAP CI '\'*r 426 wax

Data set 02

1963 Philips Electron Tubes Handbook V3

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

Device family
Hydrogen thyratron
Section1
Source reference
See chapter Tubes for Microwave Equipment in this volume
SourceCrossReference

Data set 03

1971 RCA HB3 Binder 2 of 7

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Characteristics

Voltage — published value 1
6.3 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Voltage — published value 2
10 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Current at 6.3 volts
6.3 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Minimum
2 A
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Average
2.3 A
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Minimum heating time
2
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Ionization Time (Approx.)°
0.6 s
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Deionization Time (Approx )
25 s
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
at middle of pulse duration
150 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
DC ANODE-SUPPLY VOLTAGE
800 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Inverse
5 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Peak positive-pulse
175 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
AMBIENT-TEMPERATURE RANGE — published value 1
-50 C
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
AMBIENT-TEMPERATURE RANGE — published value 2
90 C
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
DC Anode-Supply Voltage
1250 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Forward
3000 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
current pulse
530 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Negative, before conduction
0 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Peak positive-pulse (Unloaded)
175 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Effective Grid-Circuit Resistance
1000 ohm
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Peak
35 A
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Average°
35 mA
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
amplitude and the point on the anode-current Dulse which is 26 Der cent
26 A
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Of 0.05 µsec. The grid pulse ha5a minimum peak ampl itude of 130 volts, — published value 1
0.05 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Of 0.05 µsec. The grid pulse ha5a minimum peak ampl itude of 130 volts, — published value 2
130 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
voltage Is applied at a rate not to exceed 75,000 volts per second — published value 1
75 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
voltage Is applied at a rate not to exceed 75,000 volts per second — published value 2
0 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
pulse envelope at which instantaneous amplitudes are equal to 70.7 per
70.7 A
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

Other

Maximum
2.5 A
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Forward (Ebmf)
3000 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
During first 25 µsec — published value 1
25 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
During first 25 µsec — published value 2
1500 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
After first 25 µsec — published value 1
25 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
After first 25 µsec — published value 2
3000 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
before conduction
200 V
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Peak
35 mA
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Average°
0.045 mA
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Rate of rise
750 mA
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
Effective Grid-Circuit Resistance
1500 mA
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.
maximum internal impedance of 1500 ohms
1500 ohm
Published datasheet value; multiple values on one row represent separate limits, service ratings, or operating conditions.

Data set 04

1982 Toshiba

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

Peak Anode Current
35 A
Average Anode Current
45 mA
Minimum DC Supply Voltage
800 V
Maximum Rate of Rise of Anode Current
750 A/us
Pulse Repetition Rate
2500 pps
Pulse Duration
6 us
DC Anode Supply Voltage
1500 V
PulseModulator
Pulse Repetition Rate
2500 pps
PulseModulator
Pulse Width
0.5 us
PulseModulator
Peak Power Output
45 kW
PulseModulator

Data set 05

1999 Philips 0-D

Published operating points and test conditions from this source.

SECTION 1

Thyratron

Other

Pour des tensions supérieures a
2 kV
Pour des tensions supérieures a 2 kV, le support doit
Heizung : indirekt 1r(Ve
6.3 V
Heizung : indirekt 1r(Ve = 6,3 V) = 2,0 2,5 A
Vg invp = max,
200 V
Vg invp = max, 200 V
Heizung : indirekt Ir(Vr
6.3 V
Heizung : indirekt Ir(Vr = 6,3 V) = 2,0 2,54
Ia = max
45 mA
Ia = max. 45 mA
Vg invp = max
200 V
Vg invp = max. 200 V
Bei mindestens
50 V
Bei mindestens 50 V Amplitude