78

Fixed Attenuators (SMA Type)

AT-100, AT-200, and AT-300 Series

AT-103

AT-206

AT-310

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.

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,

3 cycles in each of the 3 axis

Temperature: -55

ç ¡ +5ç to +35ç ¡ +85ç ¡ +5ç to +35ç

Time: 30 ¡ 15 max. ¡ 30 ¡ 15 max. (Minutes)

200 cycles

qThe test method conforms to MIL-STD-202.

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