TDK HHM Series HHM1727D1 Specifications

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001-02 / 20080106 / e751_hhm1727d1.fm

• All specifications are subject to change without notice.

Multilayer Chip Baluns

For WiMAX

HHM Series  HHM1727D1

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

Unbalanced port

2

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

50

Ω

RECOMMENDED PC BOARD PATTERNS

Unbal port

Bal port

0.25

0.25

0.3

0.5

0.5

0.85

0.2

0.3

0.95

0.15

ø0.3 Through-hole

Dimensions in mm

Land

Line width be designed to match 50

Ω characteristic impedance depending on 

PCB material and thickness.

ELECTRICAL CHARACTERISTICS

Unbalanced impedance

50

Ω

Balanced impedance

50

Ω

Frequency range

00 to 

33

3900MHz

Unbalanced port return loss

10dB min.

Phase imbalance at balanced port

180±15deg

Amplitude imbalance at balanced port

0±1.5dB

Insertion loss

1.2dB

Attenuation

[800 to 960MHz]

11dB min.

[1700 to 1900MHz]

4dB min.

[1900 to 1980MHz]

3.5dB min.(4dB typ.)

Power capacity

0.5W 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.