Gas Discharge Tubes Omega Range RoHS Greentube™ SL1024B Series Gas Plasma Arresters Pb ® The SL1024B series offers high levels of current handling on fast rising transients created by induced Lightning disturbances. These devices are extremely robust and are able to divert pulses of 20,000 Amps. The SL1024B also features ultra low capacitance (typically 1pF or less) making them ideal for the protection of high-speed transmission equipment. FEATURES • RoHS compliant except ‘RS’ suffix • Low insertion loss • Excellent response to fast rising transients. • Ultra low capacitance. • 20KA surge capability tested with 8/20µs pulse as defined by IEC 61000-4-5 • Available with thermal failsafe option (add ‘F’ or ‘S’ suffix to part number) Applications: • Broadband equipment. • ADSL equipment. • XDSL equipment. • Satellite and CATV equipment. • Splitters • General telecom equipment. SL1024B xxxC SL1024B xxxR All dimensions in mm a b ø8.0+ _0.2 e 9.5 MAX 3 ELECTRODE GDT a=TIP b=RING e=GROUND (centre electrode) GRAPHICAL SYMBOL ORDERING INFORMATION SL1024B xxxRF ø1.0+ _0.2 SL 1024 B 344 Voltage Mechanical Specifications: Pin Configuration C=Core R=Leaded Failsafe Optio n F=Plastic S=Solder Weight: Materials: Device Marking: w w w. l i t t e l f u s e . c o m 2.7g (0.095 oz.) Electrode Base: Nickel Iron Alloy Electrode Plating: Bright Sn Body: Ceramic Littelfuse ‘LF’ marking, Voltage and date code. Red. Gas Discharge Tubes Omega Range RoHS Pb Greentube™ SL1024B Series Gas Plasma Arresters ® LITTELFUSE 3 TERMINAL ARRESTER SERIES TOTALLY NON-RADIOACTIVE, UL RECOGNIZED Max Dynamic Breakover Voltage @ 100/µs (V) Alternating Alternating Discharge Discharge Current5,3 Current1,3 (A) (A) Max Max Repetitive Single Impulse Impulse Discharge Discharge Current Current 8/20µs1,4 8/20µs1.6 (kA) (kA) Max Single Impulse Discharge Current 10/350µs5,2 (kA) SL1024B090 90 70-120 600 20 10 20 40 2.5 SL1024B145 145 116-174 500 20 10 20 40 2.5 SL1024B150 150 120-180 500 20 10 20 40 2.5 SL1024B230 230 184-276 350 20 10 20 40 2.5 SL1024B250 250 200-300 400 20 10 20 40 2.5 SL1024B260 260 210-310 420 20 10 20 40 2.5 SL1024B300 300 240-360 450 20 10 20 40 2.5 SL1024B350 350 280-420 500 20 10 20 40 2.5 SL1024B400 400 320-480 600 20 10 20 40 2.5 SL1024B420 420 345-500 650 20 10 20 40 2.5 SL1024B450 450 360-540 650 20 10 20 40 2.5 SL1024B500 500 400-500 700 20 10 20 40 2.5 8 GAS DISCHARGE TUBES Part Number DC Voltage (V) DC Breakover Voltage Min-Max7 @ 100V/sec (V) (1) Total current through centre (ground) electrode, both line electrodes pulsed simultaneously; half value through respective line terminal to ground. (2) 100 amps, 10/1000µS pulse (3) 10 shots, A.C. 60 Hz, 1sec. Duration. (4) 10 shots, 8/20µS waveform (5) either end (line) electrode to centre (ground) electrode (6) Applies to ‘C’ option devices mounted in a suitable connector with high pressure contacts. Time vs. Current for Failsafe Voltage vs Time Characteristic 50 Max dynamic breakover voltage 45 40 35 Time (s) Voltage (V) 30 25 20 15 Hold-over voltage 10 5 On-State voltage 0 0 0 200 400 600 Time (ns) 800 1000 1200 1 1 line to ground both lines to ground w w w. l i t t e l f u s e . c o m 2 3 4 5 6 Current (A) 345 Gas Discharge Tubes Omega Range RoHS Pb Greentube™ SL1024B Series Gas Plasma Arresters Profile for reflow soldering ® Profile for wave soldering 250 300 225 T 1 max = 266oC Solder Flow Area 175 150 T 1 = 239oC 125 100 200 75 Temperature (˚C) Temperature ˚C 200 50 25 0 0 50 100 150 200 250 300 Time in seconds 350 400 450 Tm = 179oC Forced Cooling Preheating Area 500 100 10 20 30 Time(seconds) Notes: T1 max T1 Tm Tamb = Maximum TabTemperature = 266oC = Flow Tempearture of Solder = 239oC = Melting Point of Solder = 179oC o = 25 C o 1. Maximum permissible rate of temperature change = 7C / sec 2. Not for RF style devices 346 w w w. l i t t e l f u s e . c o m 40