2

LD7246A

GENERAL CHARACTERISTICS

ELECTRICAL

Frequency ……………………………………………… 13.75 to 14.5 GHz

Output Power ………………………………………… 123 W

Heater Voltage ………………………………………… 4.5 V

Heater Current ………………………………………… 1.0 A

Type of Cathode ……………………………………… Indirectly heated, Impregnated

Cathode Warm-up Time

…………………………… 180 s

MECHANICAL

Dimensions …………………………………………… See Outline

Weight ………………………………………………… 1.3 kg approx.

Focusing

……………………………………………… Periodic Permanent Magnet

Mounting Position …………………………………… Any

Electrical Connections ……………………………… Flying Leads

Heater, Heater-Cathode,

Helix, Collector-1, Collector-2

RF Connections

Input ………………………………………………… SMA- Female

Output ……………………………………………… Mates with UBR-120 Flange

Cooling ………………………………………………… Conduction

ABSOLUTE RATINGS ( Note 1, 2 and 3 )

ELECTRICAL

Min.

Max.

Unit

Heater Voltage ………………………………………

4.2

4.8

V

Heater Surge Current

……………………………

–

2.5

A

Heater Current ………………………………………

–

1.3

A

Heater Warm-up Time ……………………………

180

–

s

Helix Voltage

………………………………………

6.0

6.4

kV

Helix Current

………………………………………

–

5.0

mA

Collector-1 Voltage …………………………………

3.1

3.3

kV

Collector-2 Voltage …………………………………

1.5

1.7

kV

Cathode Current ……………………………………

–

140

mA

RF Drive Power ……………………………………

–

1.0

dBm

Load VSWR …………………………………………

–

1.5 : 1

MECHANICAL

Min.

Max.

Unit

Baseplate Temperature

Storage ……………………………………………

–30

+110

˚C

Operation …………………………………………

–30

+110

˚C