American Microwave Corporation
7309-A Grove Road
Frederick, MD 21704


ISO -9001:2015

In Pursuit of Excellence
Through Engineering since 1978


AMC Model SW-2181-2A-202 is a Reflective SPDT
Band-Select Switch With
Integral TTL Driver, Packaged in a Miniature Postage Stamp
Size Housing,
designed For Ultra Broad-Band Applications such as Wide-Band


 Frequency Range

Low-Band (J1-J2): 0.01 – 3 GHz Minimum
High-Band (J1-J3): 1.0 – 20 GHz Minimum

 Insertion Loss

Low-Band: 1.3 dB Maximum
High-Band: 2.4 dB Maximum


Low-Band: 0.01 – 3 GHz: 70 dB Minimum
High-Band:  1 – 12  GHz: 65 dB Minimum
12 – 18 GHz: 60 dB Minimum
18 – 20 GHz: 55 dB Minimum

 VSWR (On)

Low-Band: 1.6:1 Maximum
High-Band: 1.8:1 Maximum

 Switching Time

Rise (10% RF  To 90% RF):   75 nS Maximum
Fall  (90% RF  To 10% RF):   75 nS Maximum
On  (50% CTL To 90% RF): 250 nS Maximum
Off  (50% CTL To 10% RF): 250 nS Maximum


TTL Compatible, Unity Load
Single Control (Toggle)
Logic “0” = J1-J2 Path On (Low Band)
Logic “1” = J1-J3 Path On (High Band)

 RF Power Ratings

+27 dBm CW Maximum

 Power Supply

+ 5 VDC  +/-5% @ 65 mA Maximum
-15  VDC +/-5% @ 65 mA Maximum


RF Input/Output: SMA (Female)
Power: Solder Pin
Control: Solder Pin


0.80″ X 0.62″ X 0.38″


Available Options:


50 Ohm Control Impedance


100 Ohm Control Impedance


Inverse Control Logic


Two Individual Controls


J1 SMA Male, J2 And J3 SMA Female


J1 SMA Female, J2 And J3 SMA Male

Environmental Ratings:

Our standard
environmental ratings are as follows, for specific
requirements please contact us…

 -55 ºC to +95
ºC Operating
ºC to +125 ºC Non-Operating
 Humidity:  MIL-STD-202F,
Method 103B Cond. B
 Shock:  MIL-STD-202F,
Method 213B Cond. B
 Vibration:  MIL-STD-202F,
Method 204D Cond. B
 Altitude:  MIL-STD-202F,
Method 105C Cond. B

 Temperature Cycle:
Method 107D Cond. A


Outline Drawing:

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Product Feature:

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Revised Product Feature
(added to the website 01/04/08):

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