Available on Tape
and Reel for Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe
:
(315) 432-8909
(800) 411-6596
+44 2392-232392
Model BD2425NnRF
Rev B
Ultra Low Profile 0404 Balun
For nRF24L01 and nRF24L01+
(Anaren Application Note Ann-3001)
Description
The BD2425NnRF is a low cost, low profile sub-miniature unbalanced to
balanced transformer designed for differential inputs and output, tuned to provide
optimal performance in tandem with the Nordic Semiconductor nRF24L01 and
nRF24L01+. The BD2425NnRF is ideal for high volume manufacturing and delivers
higher performance than a discrete implementation. The BD2425NnRF has an
unbalanced port impedance of 50Ω and matched balanced port impedance when
used in the specified matching network, which is the conjugate match of the
nRF24L01 and nRF24L01+ devices. This transformation enables single ended
signals to be applied to differential ports on the nRF24L01 and nRF24L01+. The
BD2425NnRF is available on tape and reel for pick and place high volume
manufacturing.
Detailed Electrical Specifications: Specifications subject to change without notice.
ROOM (25°
°°
°C)
Parameter Min. Typ. Max Unit
Frequency 2400 2525 MHz
Unbalanced Port Impedance** 50 Ω
Balanced Port Impedance** Matched Ω
Return Loss** 10.2 dB
Insertion Loss* ** 1.25 dB
Power Handling 1 Watts
Features:
• 2400 – 2525 MHz
• 0.57 mm Height Profile
• Matched to Nordic Semiconductor
nRF24L01 and nRF24L01+
• Low Insertion Loss
• Surface Mountable
• Tape & Reel
• Non-conductive Surface
• RoHS Compliant
Operating Temperature -55 +85 ºC
* Insertion Loss stated at room temperature (Insertion Loss is approximately 0.1 dB higher at +85 ºC)
** Stated performance assumes proper matching network found in application note: Ann-3001
Outline Drawing
Mechanical Outline
Dimensions are in Inches [Millimeters]
Tolerances are Non-Cumulative
Bottom View (Far-side)Side ViewTop View (Near-side)
Unbalanced Port
GND / DC Feed
+ RF GND
4
3
Designation
Pin
1
2
12
3
4
Balanced Port
.041
±.004
[1.05
±0.10
]
.041
±.004
[1.05
±0.10
]
.022
±.001
[0.57
±0.03
]
.020 [0.50]
.020 [0.50]
Balanced Port
3x.010
[0.25]
3x.010
[0.25]
0.12 [0.30]
.012 [0.30]
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 411-6596
+44 2392-232392
Available on Tape and
Reel for Pick and Place
Manufacturing.
Model BD2425NnRF
Rev B
Mounting Configuration:
In order for Xinger surface mount components to work optimally, the proper impedance transmission lines must be
used to connect to the RF ports. If this condition is not satisfied, insertion loss, Isolation and VSWR may not meet
published specifications.
All of the Xinger components are constructed from ceramic filled PTFE composites which possess excellent electrical
and mechanical stability having X and Y thermal coefficient of expansion (CTE) of 17 ppm/
o
C.
An example of the PCB footprint used in the testing of these parts is shown below. An example of a DC-biased
footprint is also shown below. In specific designs, the transmission line widths need to be adjusted to the unique
dielectric coefficients and thicknesses as well as varying pick and place equipment tolerances
Plated thru
hole to
ground
Solder Resist
Footprint Pad (s)
Circuit Pattern
3X Transmission
Line
3X .011
[0.29]
3X .011
[0.29]
.020
[0.50]
.020
[0.50]
Dimensions are in Inches [Millimeters]
Mounting Footprint
.008 [0.21]
.008 [0.21]
.014 [0.36]
Available on Tape
and Reel for Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe
:
(315) 432-8909
(800) 411-6596
+44 2392-232392
Model BD2425NnRF
Rev B
Packaging and Ordering Information
Parts are available in reel and are packaged per EIA 481-2. Parts are oriented in tape and reel as shown below. Minimum order
quantities are 4000 per reel. See Model Numbers below for further ordering information.
B
ØA ØC
REEL DIMENSIONS (inches [mm])
ØA
B
ØC
0.32 [8.0]
2.0 [50.8]
7.00 [177.8]
4000
QUANTITY/REEL
TABLE 1
ØD
0.512 [13.0]
ØD
