• 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.
Thin Film Balun Transformers
For DVB-H/T, ISDB-T
TTB Series
Type:
Issue date:
TTB12G51 (1.25×1.0×0.6mm)
December 2010
(1/2)
001-01 / 20101215 / e751_filmbalun_ttb02
• All specifications are subject to change without notice.
Thin Film Chip Baluns
For DVB-H/T and ISDB-T
TTB Series TTB12G51
FEATURES
• This is an optimal, thin film chip balun transformer for 50 to 50Ω
with low loss at DVB-H/T and ISDB-T frequency bands(174 to
860MHz).
• Does not contain lead and is compatible with lead-free
soldering.
• It is a product conforming to RoHS directive.
APPLICATIONS
Balanced/unbalanced conversion for DVB-H/T and ISDB-T radio
frequency inputs
PRODUCT IDENTIFICATION
(1) Series name
(2) Case size
(3) Product identification number
G51: Z0=50Ω
(4) Common mode impedance
900: 90Ω [at 100MHz]
(5) Number of line
2P: 2-line
(6) Packaging style
T: ø180mm reel taping
(7) TDK internal code
PACKAGING STYLE AND QUANTITIES
SHAPES AND DIMENSIONS/RECOMMENDED PC BOARD
PATTE RN
CIRCUIT DIAGRAM
ELECTRICAL CHARACTERISTICS
Conformity to RoHS Directive
TTB 12 G51 - 900 - 2P - T 20
(1) (2) (3) (4) (5) (6) (7)
Packaging style Quantity
Taping 4000 pieces/reel
0.6±0.07
0.25±0.15
1.25±0.07
1.0±0.07
Weight: 4mg
Dimensions in mm
0.5±0.1
0.3±0.1
1
2
4
3
0.15typ.
0.55
1.75
0.75
0.3
1
2
4
3
Unbalanced input
50Ω
Balanced output
50Ω
・No polarity
Part No. TTB12G51-900-2P
Characteristics impedance 50Ω typ.
DC resistance [1 line] 1.7Ω max.
Rated current Idc 0.1A max.
Rated voltage Edc 10V max.
Insulation resistance 10MΩ min.
Amplitude balance at balanced port [174 to 860MHz] 0±1.5dB
Phase balance at balanced port [174 to 860MHz] 180±15deg.
Insertion loss [174MHz] 0.5dB typ.
[860MHz] 0.7dB typ.
Operating temperature ranges –25 to +85°C
• 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)
001-01 / 20101215 / e751_filmbalun_ttb02
• All specifications are subject to change without notice.
FREQUENCY CHARACTERISTICS
INSERTION LOSS
AMPLITUDE BALANCE at BALANCED PORT
RETURN LOSS
PHASE BALANCE at BALANCED PORT
–10
–8
–9
–6
–7
–4
–5
–2
–3
–1
0
Insertion loss SDS21(dB)
Frequency(MHz)
100 200 300 400 500 600 700 800 900 1000
Frequency(MHz)
100 200 300 400 500 600 700 800 900 1000
3.5
3.0
4.0
4.5
0.5
0.0
–0.5
1.5
1.0
2.0
2.5
Amplitude balance(dB)
100 200 300 400 500 600 700 800 900 1000
–20
–25
–15
–10
–5
0
Return loss(dB)
Frequency(MHz)
Frequency(MHz)
100 200 300 400 500 600 700 800 900 1000
175
185
195
170
165
160
180
190
200
Phase balance(deg.)
