• All specifications are subject to change without notice.
• 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.
Multilayer Balun Transformers
For GSM850 Tx & Rx
HHM Series
Type:
Issue date:
HHM1776B2 (1.6×0.8×0.6mm)
December 2010
(1/2)
001-04 / 20101206 / e751_multibalun_hhm01.fm
• All specifications are subject to change without notice.
Multilayer Chip Baluns
For AGSM/Tx & Rx
HHM Series HHM1776B2
SHAPES AND DIMENSIONS
RECOMMENDED PC BOARD PATTERNS
ELECTRICAL CHARACTERISTICS
Unbalanced impedance 50Ω
Balanced impedance 50Ω
Frequency range 824 to 894MHz
Unbalanced port return loss 10dB min.
Phase imbalance at balanced port 180±10deg.
Amplitude imbalance at balanced port 0±1.0dB
Insertion loss 1.2dB max.
Temperature range Operating –40 to +85°C
Storage –40 to +85°C
Packaging style and quantities 4000pieces/reel
Conformity to RoHS Directive
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
0.15±0.1
1 Unbalanced port
2 GND or DC feed+ RF GND
3 Balanced port
4 Balanced port
5 GND
6 N.C.
Terminal functions
0.25
0.30
Dimensions in mm
0.50
0.50
•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.
(2/2)
001-04 / 20101206 / e751_multibalun_hhm01.fm
• All specifications are subject to change without notice.
FREQUENCY CHARCTERISTICS
Unbalance 50Ω/Balance 50Ω
RETURN LOSS
INSERTION LOSS
AMPLITUDE BALANCE
PHASE BALANCE
–25
750 800 850 900 950
–20
–15
–10
–5
0
Return loss(dB)
Frequency(MHz)
1: 824.0MHz
–15.98dB
2: 859.0MHz
–19.42dB
3: 894.0MHz
–19.22dB
1
23
–3.0
750 800 850 900 950
–2.0
–2.5
–1.5
–1.0
–0.5
0.0
Frequency(MHz)
1: 824.0MHz
–0.93dB
2: 859.0MHz
–0.84dB
3: 894.0MHz
–0.82dB
Insertion loss(dB)
123
–1.5
750 800 850 900 950
–0.5
–1
0
0.5
1
1.5
Frequency(MHz)
1: 824.0MHz
–0.36dB
2: 859.0MHz
–0.23dB
3: 894.0MHz
–0.14dB
Amplitude balance(dB)
123
165
170
180
175
185
190
195
Phase balance(deg.)
750 800 850 900 950
Frequency(MHz)
123
1: 824.0MHz
176.74deg.
2: 859.0MHz
176.15deg.
3: 894.0MHz
175.51deg.
