TDK HHM Series HHM1791A1 - Manual

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002-01 / 20080520 / e751_hhm1791a1.fm
• 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
6 5 4
1 2 3
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
1 2 3
5 6 4
Unbalanced
input
50 Ω
Balanced
output
100 Ω
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
6 5 4
1 2 3
This width is 50 Ω.
Micro-strip line for 0.4mm thick
glass-epoxy substrate.
ELECTRICAL CHARACTERISTICS
Unbalanced impedance 50 Ω
Balanced impedance 100 Ω
Frequency range 500 to 2 2 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.