
M/A-COM Division of AMP Incorporated ■ North America: Tel. (800) 366-2266, Fax (800) 618-8883 ■ Asia/Pacific: Tel. +85 2 2111 8088, Fax +85 2 2111 8087
■ Europe: Tel. +44 (1344) 869 595, Fax +44 (1344) 300 020
www.macom.com AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
5-12
V3.00
3 dB Hybrid Couplers
203X Series
Features
● 90° Quadrature Phase
● Frequency Range: .06 to 18 GHz
● Temperature Range: -65° to +125°C
● Meets MIL-E-5400 Environments 
● Non-crossover Versions Available
Description
3dB quadrature mini-hybrids are the ultimate in compact, 
rugged high stress environment components. The 
crossover feature of the location of both outputs on one 
side allows simplicity in system or subsystem design. 
Multi-octave coverage of the complete frequency spectrum, along with high isolation performance, qualifies 
them as an asset to any system.
All dimensions are ± .020 except mounting diameters 
(± .005) and mounting hole location (± .010).
90° Crossover Electrical Specifications
90° Crossover Mechanical Specifications

M/A-COM Division of AMP Incorporated ■ North America: Tel. (800) 366-2266, Fax (800) 618-8883 ■ Asia/Pacific: Tel. +85 2 2111 8088, Fax +85 2 2111 8087
■ Europe: Tel. +44 (1344) 869 595, Fax +44 (1344) 300 020
www.macom.com AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
5-13
3 dB Hybrid Couplers 203X Series
V3.00
All dimensions are ± .020 except mounting diameters (± .005) 
and mounting hole location (± .010).
Features
Air Dielectric 
Non-Crossover Design 
90° Quadrature Phase 
Frequency Range: 1.0 to 18 GHz 
Temperature Range: -50° to +110°C 
Meets MIL-E-5400 and MIL-E-16400 Environments 
MIL-C-15370/8 Equivalent
Description
These 3dB coaxial hybrids are ultra-compact. A signal 
applied into any terminal appears at both outputs with 
one-half the amplitude and shifted 90 degrees out of 
phase.
The units mount four SMA jack, low VSWR connectors. 
These couplers may be used in mixers, duplexers and 
other applications requiring equal power division.
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90° Non-Crossover Electrical Specifications
90° Non-Crossover Mechanical Specifications

M/A-COM Division of AMP Incorporated ■ North America: Tel. (800) 366-2266, Fax (800) 618-8883 ■ Asia/Pacific: Tel. +85 2 2111 8088, Fax +85 2 2111 8087
■ Europe: Tel. +44 (1344) 869 595, Fax +44 (1344) 300 020
www.macom.com AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
5-14
Features
Crossover Design 
0° or 180° Phase Difference 
High Isolation 
Low VSWR 
Multi-Octave Frequency Range 
Temperature Range: -65° to +125°C 
Meets MIL-E-5400 and MIL-E-16400 Environments
Description
These 3dB 180° mini-hybrids are highly reliable rugged 
stripline-constructed units that can be used either to 
divide or combine R.F. power. A signal incident at the 
sum (() port will yield in-phase amplitude balanced signals at the output ports. Conversely, a signal applied to 
the difference (D) port will yield amplitude balanced and 
180° out of phase signals at the ouput ports.
3 dB Hybrid Couplers 203X Series
V3.00
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All dimensions are ± .020 except mounting diameters 
(± .005) and mounting hole location (± .010).
180° Crossover Electrical Specifications
180° Crossover Mechanical Specifications