78
Fixed Attenuators (SMA Type)
AT-100, AT-200, and AT-300 Series
AT-103
AT-206
AT-310
a73Features
1.Abundant Variations of Attenuators
Attenuation amounts are available in abundant
variations from 0 to 4 dB in 0.5 dB steps, from 4 to
10 dB in 1 dB steps, and in 12, 13, 15, 20, 26 and
30 dB so that levels can be finely adjusted.
2.SMA Type
The coupling portions are available in all types of
plug and jack combinations and stainless steel is
used for the external cladding to form a small and
durable structure.
3.High Degree of Matching and High Reliability
The design of the attenuation element uses a
distributed constant circuit and metal film resistor. A
high degree of matching is achieved as indicated in
the VSWR of the appended tables. Furthermore,
these attenuators show stable characteristics for
environments of varying temperature, humidity, and
gases.
a73Product Specifications
Ratings
Rated frequency range (Note)
Characteristic impedance
Maximum Input Power
DC to 18.0 GHz
50 ohms
1 W
Operating temperature range
Operating relative humidity
-10ç to +65ç
95% Max.
Note: The frequency range will differ depending on the model.
Item Standard Conditions
1.Vibration
2.Shock
3.Temperature cycle
No electrical discontinuity of 1 µs or more
No damage, cracks, or parts dislocation
No damage, cracks, or parts dislocation
Frequency of 10 to 2000 Hz, overall amplitude of 1.52 mm,
acceleration of 98 m/s
2
for 2 hours in each of 3 directions
Acceleration of 490 m/s
2
, sine half-wave waveform,
3 cycles in each of the 3 axis
Temperature: -55ç a161 +5ç to +35ç a161 +85ç a161 +5ç to +35ç
Time: 30 a161 15 max. a161 30 a161 15 max. (Minutes)
200 cycles
a71The test method conforms to MIL-STD-202.
a73Materials a73Ordering Information
1 2 3
AT - 1 00-(0)
AT: Indicates a fixed attenuator
Indicates the Series Name (Coupling Portion)
1: SMA plug - jack
2: SMA plug - plug
3: SMA jack - jack
1
2
Attenuation
01 : 1dB
06 : 6dB
00-(0) : 0dB
(Through)
00-(0.5) : 0.5dB
00-(3.5) : 3.5dB
3
Part
Connector Body Stainless steel Passivated
Insulator
Male contacts
Female contacts
Attenuation element
PTFE
Beryllium copper
Beryllium copper
Metal film
----------
Gold plating
Gold plating
----------
Material Finish