1977-09-A00 Bourns

Features Heavy duty design Replaceable gas tube High frequency DC-4 GHz Three grounding options DC Pass to 48 V RoHS compliant* Listed (File: E360007) VSWR <1.2 Low insertion loss <0.1 dB Bidirectional Water resistant 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 Model No. Characteristic 1977-09-xxx 1977-25-xxx 1977-50-xxx Frequency Range DC-4 GHz DC Turn-On (Breakdown) 90-130 V 200-300 V 400-600 V Technology Gas Discharge Tube Insertion Loss 0.2 db Return Loss 20 db VSWR <1.2:1 Ipeak (8/20 s) 20 kA Maximum Power 25 W 190 W 780 W Maximum Current 10 A 1 Impedance 50 ohms 1 Impedance for F-Type Connector is 75 ohms. General Characteristics Model No. Characteristic 1977-09-xxx 1977-25-xxx 1977-50-xxx Connection Method Series (Bidirectional) Connectors N, F Grounding M6 Screw, Bulkhead, Bracket Weight 4.4 oz. Environmental Characteristics Model No. Characteristic 1977-09-xxx 1977-25-xxx 1977-50-xxx Environmental Rating IP 65 Operating Temperature -50 C to +85 C Operating Altitude 13,000 ft. (4,000 m) Up to 5-95 % Relative Humidity Non-condensing: Up to 100 % Asia-Pacific: Tel: +886-2 2562-4117 Email: asiacus bourns.com EMEA: Tel: +36 88 885 877 Email: eurocus bourns.com The Americas: Tel: +1-951 781-5500 Email: americus bourns.com www.bourns.com *RoHS Directive 2015/863, Mar 31, 2015 and Annex. Specications are subject to change without notice. Users should verify actual device performance in their specic applications. The products described herein and this document are subject to specic legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. *RoHS COMPLIANTApplications Multi-point radio and backhaul bridges Tower Mounted Ampli ers (TMA) Antenna systems Tower Top Electronics (TTE) Transmitters and recievers WiFi Wimax broadband wireless 1977 Series High Frequency Coaxial SPD Product Dimensions 1977-xx-A00 1977-xx-A01 64.0 68.0 (2.520) (2.677) 25.0 16.0 25.0 20.0 (.984) (.630) (.984) (.787) DIA. 16.2 DIA. 16.2 (.638) (.638) 26.0 26.0 (1.161) (1.161) 13.8 13.8 (.543) (.543) MOUNTING HOLE MOUNTING HOLE 1977-xx-A02 1977-xx-A03 51.0 57.0 (2.008) (2.244) 15.0 12.0 15.0 19.0 (.591) (.472) (.591) (.748) DIA. DIA. 10.0 10.0 (.446) (.446) 26.0 26.0 (1.161) (1.161) 8.7 8.7 (.342) (.342) MOUNTING HOLE MOUNTING HOLE MM DIMENSIONS: (INCHES) How To Order 1977 - xx - xxx Examples: Series 1977-09-A00 .......................................Coax, DC to 4 GHz, N, FF, 25 W DC Turn-On 1977-09-A01 ......................................Coax, DC to 4 GHz, N, MF, 25 W 09 = 90-130 V 1977-09-A02 ........................................Coax, DC to 4 GHz, F, FF, 25 W 25 = 200-300 V 1977-09-A03 .......................................Coax, DC to 4 GHz, F, MF, 25 W 50 = 400-600 V Connector Type 1977-25-A00 .....................................Coax, DC to 4 GHz, N, FF, 190 W A00 = N-type Female/Female 1977-25-A01 ....................................Coax, DC to 4 GHz, N, MF, 190 W A01 = N-type Male/Female 1977-25-A02 ......................................Coax, DC to 4 GHz, F, FF, 190 W A02 = F-type Female/Female 1977-25-A03 .....................................Coax, DC to 4 GHz, F, MF, 190 W A03 = F-type Male/Female 1977-50-A00 .....................................Coax, DC to 4 GHz, N, FF, 780 W 1977-50-A01 ....................................Coax, DC to 4 GHz, N, MF, 780 W 1977-50-A02 ......................................Coax, DC to 4 GHz, F, FF, 780 W 1977-50-A03 .....................................Coax, DC to 4 GHz, F, MF, 780 W REV. 10/19 Specications are subject to change without notice. Users should verify actual device performance in their specic applications. The products described herein and this document are subject to specic legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.