Features
■ Protects subscribers and equipment from destructive power crosses and lightning surges
■ Reduces frequency of service calls
■ Increases reliability of network operation
■ Reduces cost of network maintenance
■ Listed per UL 497*
1965 Series – 50 Ohm Coaxial Surge Protector
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
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 specifi cations 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.
Characteristics
Characteristic Impedance ...................................................................................................................... 50 Ω
Frequency Characteristics (DC - 1 GHz)
VSWR (Max.) ................................................................................................................................... <1.2:1
Transmission/Insertion Loss (Max.) ................................................................................................. <0.2 dB
Impulse Discharge
20 kA, 8/20 μs .................................................................................................................................. 1 time
10 kA, 8/20 μs .................................................................................................................................. 10 times
500 A, 10/1000 μs ............................................................................................................................ 500 times
Arc Voltage (during discharge) .............................................................................................................. 10 V
Operating Temperature .......................................................................................................................... -40 ° to +85 °C
Maximum Operating Altitude ................................................................................................................. 7,000 m
Impulse Sparkover (100 V/μs) 1965-20* 1965-35 1965-50 1965-60
100 V/μs ..............................................400 V ...................... 550 V ...................... 700 V ................. 600 V
1 kV/μs ................................................500 V ...................... 650 V ...................... 800 V ................. 850 V
10 kV/μs ..............................................650 V ...................... 800 V ...................... 900 V ................. 1100 V
*Model 1965-20-Axx is UL Listed per UL 497 for indoor/outdoor use in a listed, compatible NID.
VSWR and Insertion Loss
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
How to Order
REV. J 04/15
Specifi cations are subject to change without notice.
The device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time.
Users should verify actual device performance in their specifi c applications.
1965 Series – 50 Ohm Coaxial Surge Protector
DIMENSIONS: MM
(INCHES)
2468
105
102
103
106107108109
1965-20
1965-35
1965-50
1965-60
2
4
6
8
Frequency (Hz)
Power
(Watts)
How to Order Connector Fittings
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)
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 fi rst 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.
Product Dimensions
41.0
(1.61)
5.3
(.209) 4.5
(.177) DIA.
57.0
(2.24)
3.3
(0.13)
46
(1.81)
Asia-Pacifi c: Tel: +886-2 2562-4117 • Fax: +886-2 2562-4116
EMEA: Tel: +36 88 520 390 • Fax: +36 88 520 211
The Americas: Tel: +1-951 781-5500 • Fax: +1-951 781-5700
www.bourns.com
