3

LD7215, LD7215C, LD7215D

TYPICAL OPERATION (Note 1, 3 and 4)

Frequency ………………………………………………

6.175

GHz

Heater Voltage (Note 5) ………………………………

6.3

V

Heater Current …………………………………………

3.9

A

Coilector Voltage ………………………………………

8.25

kV

Helix Voltage ……………………………………………

13.5

kV

Accelerating Anode Voltage …………………………

11.5

kV

Collector Current ………………………………………

1.35

A

Helix Current ……………………………………………

5

mA

Accelerating Anode Current …………………………

0.02

mA

Power Gain

at Small Signal

……………………………………

52

dB

at 3 kW Output

……………………………………

46

dB

Gain Variation (at Small Signal) …………………… 2.5/1.0

dB (LD7215/LD7215C, LD7215D)

Gain Slope (at Small Signal)

………………………

0.02

dB/MHz

AM-PM Conversion

at less than 500 W …………………………………

2

°/dB

at 3 kW Output

……………………………………

3.5

°/dB

3rd Order Intermodulation

…………………………

–27

dBc

(Two equal carriers, 250 W total)

Cooling Air Flow ………………………………………

720

kg/hr

Air Pressure Drop

……………………………………

882.6

Pa

Note 1 : Absolute rating should not be exceeded under continuous or transient conditions. A single absolute

rating may be the limitation and simultaneous operation at more than one absolute rating may not be

possible.

Note 2 : The tube body is at ground potential in operation.

Note 3 : All voltages are referred to the cathode potential except the heater voltage.

Note 4 : The optimum operating parameters are shown on a test performance sheet for each tube.

Note 5 : These characteristics and operating values may be changed as a result of additional information or

product improvement. NEC should be consulted before using this information for equipment

design. This data sheet should not be referred to a contractual specification.