SL1024B250

Gas Discharge Tubes Omega Range RoHS Pb Greentube™ SL1024B Series Gas Plasma Arresters ® 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 SL 1024 B Voltage Pin Configuration C=Core R=Leaded Failsafe Optio n F=Plastic S=Solder 344 SL1024B xxxRF ø1.0+0.2 _ Mechanical Specifications: Weight: Materials: 2.7g (0.095 oz.) Electrode Base: Nickel Iron Alloy Electrode Plating: Bright Sn Body: Ceramic Littelfuse ‘LF’ marking, Voltage and date code. Red. Device Marking: w w w. l i t t e l f u s e . c o m Gas Discharge Tubes Omega Range RoHS Pb Greentube™ SL1024B Series Gas Plasma Arresters ® LITTELFUSE 3 TERMINAL ARRESTER SERIES TOTALLY NON-RADIOACTIVE, UL RECOGNIZED DC Breakover Voltage Min-Max7 @ 100V/sec (V) 70-120 116-174 120-180 184-276 200-300 210-310 240-360 280-420 320-480 345-500 360-540 400-500 Max Dynamic Breakover Voltage @ 100/µs (V) 600 500 500 350 400 420 450 500 600 650 650 700 Max Max Repetitive Single Impulse Impulse Discharge Discharge Current Current 8/20µs1,4 8/20µs1.6 (kA) (kA) 20 20 20 20 20 20 20 20 20 20 20 20 40 40 40 40 40 40 40 40 40 40 40 40 Max Single Impulse Discharge Current 10/350µs5,2 (kA) 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 Part Number SL1024B090 SL1024B145 SL1024B150 SL1024B230 SL1024B250 SL1024B260 SL1024B300 SL1024B350 SL1024B400 SL1024B420 SL1024B450 SL1024B500 DC Voltage (V) 90 145 150 230 250 260 300 350 400 420 450 500 Alternating Alternating Discharge Discharge Current5,3 Current1,3 (A) (A) 20 20 20 20 20 20 20 20 20 20 20 20 10 10 10 10 10 10 10 10 10 10 10 10 8 GAS DISCHARGE TUBES 5 6 (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. Voltage vs Time Characteristic 50 Max dynamic breakover voltage Time vs. Current for Failsafe 45 40 35 30 Voltage (V) Time (s) Hold-over voltage On-State voltage 25 20 15 10 5 0 0 1 1 line to ground both lines to ground 2 3 Current (A) 4 0 200 400 600 Time (ns) 800 1000 1200 w w w. l i t t e l f u s e . c o m 345 Gas Discharge Tubes Omega Range RoHS Pb Greentube™ SL1024B Series Gas Plasma Arresters Profile for reflow soldering Profile for wave soldering 300 ® 250 225 200 Temperature ˚C 175 150 125 100 Temperature (˚C) Solder Flow Area o T 1 m ax = 266C o T 1 = 239 C 200 75 50 25 0 0 50 100 150 200 250 300 350 400 450 500 Time in seconds Tm = 179oC Forced Cooling Preheating Area 100 10 20 Time(seconds) 30 40 Notes: T1 max T1 Tm Tam b = Maximum TabTemperature = 266oC = Flow Tempearture of Solder = 239oC = Melting Point of Solder = 179oC o = 25 C o C 1. Maximum permissible rate of temperature change = 7 / sec 2. Not for RF style devices 346 w w w. l i t t e l f u s e . c o m