B78408A1900A003 Datasheet, PDF (2/4 Pages) EPCOS – RF transformers 10 dB directional coupler

Transformers for information technology
10 dB directional coupler
B78408A1900A003
DL 3.6, small
Technical data
■ Double-aperture transformer
■ Recommended frequency range:
47 MHz to 2000 MHz
■ Operating temperature: −40 °C to +85 °C
■ Weight: approx. 80 mg
Feature
■ RoHS-compatible
Marking
■ No marking on components
■ Minimum data on reel:
Manufacturer, ordering code,
quantity, date code
Delivery mode and packing unit
■ 12-mm blister tape to IEC 60286-3,
wound on 330-mm ∅ reel
■ Packing unit: 2100 pcs./reel
Dimensional drawing
4.6 max. ^{Exemplary winding}
construction
2 max.
0.6 max.
2 x 1.5 = 3
0.2
5.5 max.
654
Pick-and-place area
123
1
FIN0335-V-E
Layout
recommendation
1.5
2 x 1.5 = 3 FIN0287-O
Dimensions in mm
Circuit diagram and test arrangement
1
6
5
3
4
FIN0273-B
Output
1
75 Ω
3
6
Input
5
Coupled
4
FIN0274-J-E
Insertion loss
Measurement instrument: Network analyzer
Impedance: 75 Ω
Values specified at 25 °C
Frequency (MHz)
Mainline loss Input/Output (dB)
Coupling Input/Coupled (dB)
47
1.0 ±0.3
10.3 ±0.3
Please read Cautions and warnings and
Important notes at the end of this document.
2 03/08
862
1.0 ±0.4
10.0 ±0.6
2000
1.35 ±0.6
10.5 ±1.7