(1/2)
001-03 / 20080106 / e751_hhm1521.fm
• All specifications are subject to change without notice.
Multilayer Chip Baluns
For Bluetooth & 2.4GHz W-LAN
HHM Series HHM1521
SHAPES AND DIMENSIONS
0.95
±
0.1
1.25
±
0.15
0.65
±
0.2
0.3
±
0.2
0.2
±
0.2
0.35
±
0.2
2.0
±
0.15
6
5
4
1
2
3
Dimensions in mm
0.25
+
0.1
–0.2
1
Unbalanced port
2
GND or DC feed+ RF GND
3
Balanced port
4
Balanced port
5
GND
6
N.C.
Terminal functions
CIRCUIT DIAGRAM
1
2
3
5
6
4
Unbalanced
input
50
Ω
Balanced
output
200
Ω
RECOMMENDED PC BOARD PATTERNS
0.2
0.3
0.3
0.8
0.6
0.7
ø0.3 Through-hole
This width is 50
Ω
.
Micro-strip line for 0.4mm thick
glass-epoxy substrate.
Dimensions in mm
6
5
4
1
2
3
0.8
ELECTRICAL CHARACTERISTICS
Unbalanced impedance
50
Ω
Balanced impedance
200
Ω
Frequency range
2400 to 2500MHz
Unbalanced port return loss
10dB min.
Phase imbalance at balanced port
180±10deg.
Amplitude imbalance at balanced port
0±2.0dB
Insertion loss
1.0dB max.
Temperature range
Operating
–40 to +85°C
Storage
–40 to +85°C
Packaging style and quantities
2000pieces/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.
