© PHOENIX CONTACT - 01/2009
2431_en_A
TRABTECH
CN-LAMBDA/4-2.2…
Data Sheet
Description
The CN-LAMBDA/4-2.2… with N-type connector protects
radio devices against surge voltage. Placed on both sides
of the device being protected, transient voltages are pre-
vented from damaging equipment. With its high energy-ab-
sorbing capacity, the CN-LAMBDA/4-2.2… greatly reduces
system failure when using exposed antenna systems.
The Lambda/4 technology provides excellent protection
with limited signal degradation. Compatible with 0.82 to
2.2 GHz signals, the adapter is ideal for protecting mobile
phones and satellite location systems.
For maximum protection, install a CN-LAMBDA/4-2.2… at
each coaxial input and output connector to protect a device
against both lightning strikes and transient voltage picked
up by the cable. The adapter includes a seal for mounting
through a 16 mm diameter hole in a bulkhead. An optional
mounting bracket allows mounting to a plate. Grounding is
through the bulkhead, optional bracket or separate wire (up
to 4 AWG/25 mm2) attached to the grounding lug (requires
user-supplied M8 screw).
Phoenix Contact offers a full line of surge protection prod-
ucts. For additional information, visit our website at
www.phoenixcon.com/trabtech.
Figure 1 Function Diagrams
Figure 2 Typical VSWR and Insertion Loss
λ/4 λ/4
Make sure to always use the latest documentation.
It can be downloaded at www.download.phoenixcontact.com.
COAXTRAB Surge Voltage Protection for Mobile
Phone and Broadband Communication Systems
CN-LAMBDA/4-2.2…
2431_en_A PHOENIX CONTACT 2
Ordering Data
Technical Data
Products
Description Type Order No. Pcs./Pkt
COAXTRAB, Protective adapter for antenna connection,
socket-socket connector CN-LAMBDA/4-2.2-BB 2800024 1
COAXTRAB, Protective adapter for antenna connection,
plug-socket connector CN-LAMBDA/4-2.2-SB 2800025 1
Accessories
Description Type Order No. Pcs./Pkt
CN-UB Assembly Bracket, 90°, 50 mm CN-UB/MP-90DEG-50 2803137 1
General Data
Weight 215 g (0.47 lb.)
Degree of protection IP 68
RF Specifications
Frequency 0.82-2.2 GHz
VSWR (typical/maximum) 1.1/1.2
Insertion Loss (typical/maximum) 0.05/0.15 dB
Return Loss (typical/maximum) -26.4/-20.8 dB
RF Power 0.5 kWAVG/4 kWPK
Surge Protection
Maximum discharge surge current Imax (8/20 µs waveform) 60 kAPK
Nominal discharge surge current In (8/20 µs waveform) 50 kA
Let-through VPK/µJ (8/20 µs waveform) 12 V/15 µJ @ 6 kV/3 kA; 1.2 x 50
Iimp (10/350 µs waveform) 20 kA
Approvals
CE EN
CN-LAMBDA/4-2.2…
2431_en_A 3
PHOENIX CONTACT GmbH & Co. KG • 32823 Blomberg • Germany • Phone: +49-(0) 5235-3-00
PHOENIX CONTACT • P.O.Box 4100 • Harrisburg • PA 17111-0100 • USA • Phone: +717-944-1300
www.phoenixcontact.com
Figure 3 CN-LAMBDA/4-2.2… dimensions
Figure 4 CN-UB/MP-90DEG-50 dimensions
M8 x 1.25
thread
83 mm
(3.3 in.)
66 mm
(2.6 in.)
13.7 mm
(0.54 in.)
Ø 16.0 mm
(Ø 0.63 in.)
CN-LAMBDA/4-2.2-SB
(2800025)
CN-LAMBDA/4-2.2-BB
(2800024)
Ø 6.0 mm
(Ø 0.24 in.)
25.00 mm
(0.984 in.)
45.00 mm
(1.772 in.)
2803137
13.7 mm
(0.539 in.)
50.00 mm
(1.968 in.)
30.00 mm
(1.181 in.)
Ø16.0 mm
(0.629 in.)
R15.0 mm
(0.590 in.)
40.00 mm
(1.574 in.)
36.00 mm
(1.417 in.)
10.00 mm
(0.394 in.)
10.00 mm
(0.394 in.)
Ø5.2 mm
(0.205 in.)
