Gas Discharge Tube Gdt Products Page 42 Gas Discharge Tube GDT Products

Gas Discharge Tubes 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/06/15 SL1021A/B Series Time vs. Current for Failsafe 0.5 1 2 3 4 5 6 7 8 9 11 12 13 14 15 10 20 30 60 1 2 5 10 15 30 SL102xA with Failsafe SL102xB or PMT8 500 Volt Higher Melting Point Solder SL102xB or PMT8 90 Volt Higher Melting Point Solder SL102xB or PMT8 350 Volt Higher Melting Point Solder Voltage vs. Time Characteristic Voltage (V) Time (ns) 0 200 400 600 800 1000 1200 Max dynamic breakover voltage Hold-over voltage On-State voltage Reflow Condition Pb - Free assembly Pre Heat - Temperature Min (T s(min) ) 150C - Temperature Max (T s(max) ) 200C - Time (Min to Max) (t s ) 60 - 180 secs Average ramp up rate (Liquidus Temp (T L ) to peak 3C/second max T S(max) to T L - Ramp-up Rate 5C/second max Reflow - Temperature (T L ) (Liquidus) 217C - Temperature (t L ) 60 - 150 seconds Peak Temperature (T P ) 260 +0/-5 C Time within 5C of actual peak Temperature (t p ) 10 - 30 seconds Ramp-down Rate 6C/second max Time 25C to peak Temperature (T P ) 8 minutes Max. Do not exceed 260C Soldering Parameters - Reflow Soldering (Surface Mount Devices) Time Temperature T P T L T S(max) T S(min) 25 t P t L t S time to peak temperature (t 25C to peak) Ramp-down Ramp-up Preheat Critical Zone T L to T P Soldering Parameters - Wave Soldering (Thru-Hole Devices) Soldering Parameters - Hand Soldering Dwell Time 0 20 40 60 80 100 120 140 160 180 200 220 240 260 280 300 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240 Time (Seconds) Temperature (C) - Measured on bottom side of board Cooling Time Preheat Time Wave Parameter Lead-Free Recommendation Preheat: (Depends on Flux Activation Temperature) (Typical Industry Recommendation) Temperature Minimum: 100 C Temperature Maximum: 150 C Preheat Time: 60-180 seconds Solder Pot Temperature: 280 C Maximum Solder Dwell Time: 2-5 seconds Recommended Process Parameters: Solder Iron Temperature: 350 C +/- 5C Heating Time: 5 seconds max. Note: Surge Arrestors with a Failsafe mechanism should be individually examined after soldering

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