Specifications are subject to change without notice.
Features
I
Protects subscribers and equipment from
destructive power crosses and lightning
surges
I
Reduces frequency of service calls
I
Increases reliability of network operation
I
Reduces cost of network maintenance
I
Listed per UL 497*
1965 Series 50 Ohm Coaxial Surge Protector
Characteristics
The Bourns 1965 Series Coaxial Surge Protector is intended for use with low power VHF and UHF transmitters, 2-way base
station transceivers, and receive-only systems. All models provide GDT technology. The 1965 arrester is symmetric and
bidirectional. Either end may be used for the input or output. Various power and voltage choices are available - see
specifications below for proper selection. Available with a choice of connectors.
Note: The arrester ground plate is common with the connector body; hence the coax cable shields will be grounded at their
connection to the arrester.
VSWR and Insertion Loss
Characteristic Impedance .................................................................................................................................... 50
Frequency Characteristics (DC - 1 GHz)
VSWR (Max.) ................................................................................................................................................... <1.2:1
Transmission/Insertion Loss (Max.) ................................................................................................................. <0.2 dB
Impulse Discharge
20 kA, 8/20
s ................................................................................................................................................. 1 time
10 kA, 8/20
s ................................................................................................................................................. 10 times
500 A, 10/1000
s ........................................................................................................................................... 500 times
Arc Voltage (during discharge) ............................................................................................................................. 10 V
Operating Temperature ........................................................................................................................................ -40
to +85C
Maximum Operating Altitude ............................................................................................................................... 7,000 m
Impulse Sparkover (100 V/
s)
1965-20*
1965-35
1965-50
1965-95
100 V/
s ............................................... 400 V................... 550 V ................... 700 V.................. 1300 V
1 kV/
s ................................................. 500 V................... 650 V ................... 800 V.................. 1450 V
10 kV/
s ............................................... 650 V................... 800 V ................... 900 V.................. 1650 V
*Model 1965-20-Axx is UL Listed per UL 497 for indoor/outdoor use in a listed, compatible NID.
REV. H
0
.200
.175
.150
.125
.100
.075
.050
.025
0
100
200
300
400
500
Frequency (MHz)
Insertion
Loss
(-dB)
1.16
1.14
1.12
1.10
1.08
1.06
1.04
1.02
1.00
600
700
800
900
1000
VSWR
VSWR
INSERTION LOSS
UL
Specifications are subject to change without notice.
1965 Series 50 Ohm Coaxial Surge Protector
How to Order
Product Dimensions
Note: Radio frequency and transmit power should be known. The above curves apply to systems with a VSWR of 1.2:1 or
less. Choose the protector whose curve lies first above the power-frequency coordinates of the radio system. For systems
with a VSWR in excess of 1.2:1, or for a more exact determination if desired, multiply the actual radio power by the
expression 0.83[2xVSWR
(1+VSWR)]
2
, and use this new power value to enter the graph.
MM
(INCHES)
DIMENSIONS:
2
4 6 8
105
102
103
106
107
108
109
1965-20
1965-35
1965-50
1965-95
2
4
6
8
Frequency (Hz)
Power
(Watts)
Part No.
Description
1965-xx-A00 ...... N(f) and N(f)
1965-xx-A01 ...... N(f) and N(m)
1965-xx-A04 ...... BNC(f) and BNC(f)
1965-xx-A05 ...... BNC(f) and BNC(m)
1965-xx-A12 ...... UHF(f) and UHF(f)
41.0
(1.61)
5.3
(.209)
4.5
(.177)
DIA.
57.0
(2.24)
3.3
(0.13)
46
(1.81)
How to Order Connector Fittings
Asia-Pacific:
TEL +886- (0)2 25624117
FAX +886- (0)2 25624116
Europe:
TEL +41-41 7685555
FAX +41-41 7685510
North America:
TEL +1-909 781-5500
FAX +1-909 781-5700
bourns.com
COPYRIGHT 2001, BOURNS, INC. LITHO IN U.S.A. IP 09/01 G0133
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