(1/2)
Conformity to RoHS Directive
Multilayer Chip Baluns
For DCS-PCS/Tx & Rx
HHM Series HHM1518A3
SHAPES AND DIMENSIONS
2.0 0.15
5
0.95 0.1
6
4
3
1
2
Terminal functions
0.65 0.2
0.3 0.2
1
2
3
4
5
6
Unbalanced port
GND or DC feed+ RF GND
Balanced port
Balanced port
GND
N.C.
0.2 0.2 0.35 0.2
Dimensions in mm
CIRCUIT DIAGRAM
6
5
4
3
Unbalanced
input
50Ω
Balanced
output
150Ω
1
2
RECOMMENDED PC BOARD PATTERNS
0.3 0.2
This width is 50Ω.
Micro-strip line for 0.4mm thick
glass-epoxy substrate.
6
1
5
2
4
3
ø0.3 Through-hole
Dimensions in mm
0.3
ELECTRICAL CHARACTERISTICS
Unbalanced impedance
Balanced impedance
50Ω
150Ω
Frequency range
1710 to 1990MHz
Unbalanced port return loss
Phase imbalance at balanced port
Amplitude imbalance at balanced port
Insertion loss
10dB min.
180 10deg.
0 1.0dB
1.0dB max.
–40 to +85°C
–40 to +85°C
2000pieces/reel
Operating
Storage
Temperature range
Packaging style and quantities
• 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.
• All specifications are subject to change without notice.
001-02 / 20080106 / e751_hhm1518a3.
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