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Electrical characteristics
Type
Power
P
70
Operating Temp.
range
MPV
VSWR
(Max.)
Impedance Attenuation range & tolerance Frequency range
ATV321 40mW
-55°Cto+125°C 50V 1.3 50Ω
-1dB to -5dB ±0.3 dB
-1dB to -10dB DC to 2.5 GHz
-6dB to -10dB ±0.5 dB
-15dB ±1.0 dB
-15dB to -20dB DC to 2.0 GHz
-20dB ±2.0 dB
Environmental characteristics
Performance test Test method Procedure Requirements
Life
MIL-STD-202G-
method 108A
1 000 hours at 70 ±5°C applied RCWV
1.5 hours on, 0.5 hours off, still air required
Max.: ±0.3 dB
Humidity
(steady state)
JIS C 5202 7.5
1000hours,40±2°C,93(+2/-3)%RH
RCWV applied for 1.5 hours on and 0.5 hour off
Max.: ±0.3 dB
Moisture resistance
MIL-STD-202G-
method 106F
Eachtemperature/humiditycycleisdenedas8hours(method
106F),3cycles/24hoursfor10dwith25°C/65°C95%R.H
Max.: ±0.3 dB
Thermal shock
MIL-STD-202G-
method 107G
LCT/UCT,numberofcyclesrequiredis300
Maximum transfer time is 20 seconds
Max.: ±0.3 dB
Solder-
ability
Wetting
J-STD-002B
testB
Electricaltestnotrequired.Magnication50X
Lead-free solder bath at 245 ±3°C
Dipping time: 3 ±0.5 seconds
Well tinned
(≥95%covered)
Resistance to
soldering heat
MIL-STD-202G-
method 210F
Lead-free solder, 260°C, 10 seconds immersion time Max.: ±0.1 dB
Short time overload
MIL-R-55342D-
para 4.7.5
2.5 times RCWV or maximum overload voltage whichever is
less for 5 seconds at room temperature
Max.: ±0.3 dB
Chip Resistors Selection Charts
AT - RF attenuator chip resistors, 0404