1977 Datasheet, PDF (1/2 Pages) Bourns Electronic Solutions – High Frequency Coaxial SPD

*RoHS ^COMPLIANT
Features
■ Heavy duty design
■ High frequency DC-4 GHz
■ DC Pass to ±48 V
■ VSWR <1.2
■ Low insertion loss <0.1 dB
■ Bidirectional
■ Water resistant
■ Replaceable gas tube
■ Three grounding options
■ RoHS compliant*
■ Listed (File: E360007)
1977 Series High Frequency Coaxial SPD
General Information
The Bourns^® Model 1977 Series Coaxial Surge Protective Device (SPD) has been designed to provide heavy duty protection for
antennas, broadband, microwave, GPS, cellular and CATV applications against surges caused by lightning and other electrical
transients.
Electrical Characteristics
Characteristic
Frequency Range
DC Turn-On (Breakdown)
Technology
Insertion Loss
Return Loss
VSWR
Ipeak (8/20 μs)
Maximum Power
Maximum Current
Impedance
1 _{Impedance for F-Type Connector is 75 ohms.}
1977-09-xxx
90-130 V
25 W
Model No.
1977-25-xxx
DC-4 GHz
200-300 V
Gas Discharge Tube
≤0.2 db
≥20 db
<1.2:1
20 kA
190 W
10 A
50 ohms ¹
1977-50-xxx
400-600 V
780 W
General Characteristics
Characteristic
Connection Method
Connectors
Grounding
Weight
1977-09-xxx
Model No.
1977-25-xxx
Series (Bidirectional)
N, F
M6 Screw, Bulkhead, Bracket
4.4 oz.
1977-50-xxx
Environmental Characteristics
Characteristic
Environmental Rating
Operating Temperature
Operating Altitude
Relative Humidity
1977-09-xxx
Model No.
1977-25-xxx
IP 65
-50 °C to +85 °C
13,000 ft. (4,000 m)
Up to 5-95 %
Non-condensing: Up to 100 %
1977-50-xxx
Asia-Pacific: Tel: [phone] • Fax: [phone]
Europe: Tel: [phone] • Fax: [phone]
The Americas: Tel: [phone] • Fax: [phone]
www.bourns.com
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
Specifications 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 specific applications.