TDK HHM Series HHM1791A1 Network Card User Manual


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• All specifications are subject to change without notice.
Multilayer Chip Baluns
For WiMAX
HHM Series HHM1791A1
SHAPES AND DIMENSIONS
0.6±0.1
0.8±0.1
0.3±0.1
0.1±0.1 0.25±0.1
1.6±0.1
654
123
Dimensions in mm
0.55±0.1
1 N.C.
2 GND
3 Balanced port
4 Balanced port
5 GND
6 Unbalanced port
Terminal functions
CIRCUIT DIAGRAM
123
564
Unbalanced
input
50
Ω
Balanced
output
100Ω
RECOMMENDED PC BOARD PATTERNS
0.3
0.25
0.25
0.6 0.3
0.6
ø0.3 Through-hole
Dimensions in mm
0.7
0.3
654
123
This width is 50Ω.
Micro-strip line for 0.4mm thick
glass-epoxy substrate.
ELECTRICAL CHARACTERISTICS
Unbalanced impedance 50Ω
Balanced impedance 100Ω
Frequency range 500 to 22 700MHz
Unbalanced port return loss 10dB min.
Phase imbalance at balanced port 180±10deg
Amplitude imbalance at balanced port 0±2.2dB
Insertion loss 0.8dB max.
Temperature range
Operating –40 to +85°C
Storage –40 to +85°C
Packaging style and quantities 4000pieces/reel
Conformity to RoHS Directive
• Conformity to RoHS Directive: This means that, in conformity with EU Directive 2002/95/EC, lead, cadmium, mercury, hexavalent chromium, and
specific bromine-based flame retardants, PBB and PBDE, have not been used, except for exempted applications.