?2009 littelfuse, inc. gas discharge tube (gdt) products 19 revised: november 10, 2009 speci?cations are subject to change without notice. please refer to www.littelfuse.com for current information. customer should verify actual device performance in their speci?c applications. sl1021a/b, sl1024a/b and pmt8 series sl1021a/b, sl1024a/b and pmt8 series description gdt circuit protection devices dissipate electrical surge energy safely within a contained plasma gas. commonly used to help protect sensitive telecom and networking equipment and lines, gdts protect from damage that may result from lightning strikes and equipment switching operations. the littelfuse gdt series described in this document are available in a variety of leaded and surface mount forms and offered with and without optional fail- safe clip. please refer to the electrical speci?cations, dimension and packaging options section of this document for additional information. sl1021a/b and sl1024a/b series: sl1021a/b and sl1024a/b series gdts are designed to offer high levels of performance on fast rising transients in the range of 100v/s to 1kv/s, which are those most likely created by induced lightning disturbances. these devices feature ultra low capacitance (typically 1.5pf or less) and are extremely robust with sl102xa devices able to divert a 10,000 amp pulse without destruction, and sl102xb suf?x devices able to divert a 20,000 amp pulse without destruction. these series offer optimized internal geometry which provide low insertion loss at high frequencies, ideal for the protection of broadband and other high speed transmission equipment. pmt8 series: pmt8 gdt's are telecom grade devices designed to meet the recommendations in ccitt-k12 and bellcore gr-1361-core. the three electrode con?guration is used in applications where simultaneous crowbar action of two signal lines is required. features ? rohs compliant ? low insertion loss ? excellent response to fast rising transients ? ultra low capacitance ? 10ka (a suf?x devices) / 20ka (b suf?x devices) surge capability tested with 8/20s pulse as de?ned by iec 61000-4-5 ? available with thermal failsafe option (add f suf?x to part number) applications sl1021 / sl1024: ? broadband equipment ? adsl equipment ? xdsl equipment ? satellite and catv equipment ? splitters ? general telecom equipment pmt8: ? telecom network interfaces ? telephone line cards ? repeaters ? modems ? line test equipment sl1021a/b, sl1024a/b and pmt8 series agency agency file number ? e128662 agency approvals 3 electrode gdt graphical symbol a e b a = tip b = ring e = ground (center electrode) ? product characteristics materials dull tin plate 17.5 12.5 microns. with ceramic insulator product marking lf mark, voltage& date code: sl102x a - red /white text sl102x b & pmt8 - blue /white text glow to arc transition current ~ 1amp glow voltage ~60-200 volts storage and operation temperature -40 to +90c transverse voltage (delay time) < 0.2sec (tested to itu-t rec. k.12) arc voltage ~10 to 35 volts holdover voltage <150ms (tested to itu-t rec. k.12)
?2009 littelfuse, inc. gas discharge tube (gdt) products 20 revised: november 10, 2009 speci?cations are subject to change without notice. please refer to www.littelfuse.com for current information. customer should verify actual device performance in their speci?c applications. sl1021a/b, sl1024a/b and pmt8 series sl1021a/b, sl1024a/b and pmt8 series electrical characteristics device speci?cations (at 25c) life ratings part number* dc voltage 100v/sec. dc voltage 100 v/ sec. dc voltage 1kv/ sec. capaci- tance (@1mhz) insulation resistance ac current 50hz 1sec.x10 1 surge current 8/20sec x10 1 max single surge 8/20sec 1 max single surge 10/350sec 1 surge life 10/1000 secx300 1 min typ max min sl1021a090 sl1024a090 sl1021b090 sl1024b090 pmt 8 090 72 90 108 500 650 <1.5pf 10amps 10ka 2 20ka 3 15ka 2 25ka 3 4ka 2 5ka 3 200amps sl1021a145 sl1024a145 sl1021b145 sl1024b145 116 145 174 600 2.5ka 2 5ka 3 sl1021a150 sl1024a150 sl1021b150 sl1024b150 120 150 180 sl1021a200 150 200 250 sl1021a230 sl1024a230 sl1021b230 sl1024b230 pmt 8 230 184 230 276 450 650 sl1021a250 sl1024a250 sl1021b250 sl1024b250 pmt 8 250 200 250 300 500 sl1021a260 sl1024a260 sl1021b260 sl1024b260 210 260 310 550 700 sl1021a300 sl1024a300 sl1021b300 sl1024b300 240 300 360 650 850 sl1021a350 sl1024a350 sl1021b350 sl1024b350 pmt 8 350 280 350 420 700 900 sl1021a400 sl1024a400 sl1021b400 sl1024b400 pmt 8 400 320 400 480 850 950 sl1021a420 sl1024a420 sl1021b420 sl1024b420 345 420 500 sl1021a450 sl1024a450 sl1021b450 sl1024b450 360 450 540 900 1000 sl1021a500 sl1024a500 sl1021b500 sl1024b500 400 500 600 950 1100 sl1021a600 sl1024a600 480 600 720 1000 1200 notes: *max capacitance is 1.5 pf, measured at 1 mhz. 1. total current through centre electrode, tested in accordance with itu-t rec k.12 2. sl a series 3. sl b series & pmt 8 series
?2009 littelfuse, inc. gas discharge tube (gdt) products 21 revised: november 10, 2009 speci?cations are subject to change without notice. please refer to www.littelfuse.com for current information. customer should verify actual device performance in their speci?c applications. sl1021a/b, sl1024a/b and pmt8 series sl1021a/b, sl1024a/b and pmt8 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 12 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 re?ow condition pb C free assembly pre heat - temperature min (t s(min) ) 150c - temperature max (t s(max) ) 200c - time (min to max) (t s ) 60 C 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 re?ow - temperature (t l ) (liquidus) 217c - temperature (t l ) 60 C 150 seconds peak temperature (t p ) 260 +0/-5 c time within 5c of actual peak temperature (t p ) 10 C 30 seconds ramp-down rate 6c/second max time 25c to peak temperature (t p ) 8 minutes max. do not exceed 260c soldering parameters - re?ow 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 25oc 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 t ime 0 20 4 0 60 80 100 120 1 4 0 160 180 200 220 2 4 0 260 280 300 0 10 20 30 4 0 50 60 70 80 90 100 110 120 130 1 4 0 150 160 170 180 190 200 210 220 230 2 4 0 t ime (seconds) t emperature (c) - measured on bottom side of board cooling t ime preheat t ime 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
?2009 littelfuse, inc. gas discharge tube (gdt) products 22 revised: november 10, 2009 speci?cations are subject to change without notice. please refer to www.littelfuse.com for current information. customer should verify actual device performance in their speci?c applications. sl1021a/b, sl1024a/b and pmt8 series sl1021a/b, sl1024a/b and pmt8 series 8.1 [0.319] 10.10 [0.398] 9.9 [0.354] 9.9 [0.354] 10.10 [0.398] 4.4 0.3 [0.173 0.12] 4.4 0.3 [0.173 0.12] 15 [0.590] 16.8 [0.661] 4.4 [0.173] 1.0 dia. max. [0.039] 12.4 1 [0.488 0.039] 11. 8 [0.464] 11.8 [0.464] 8.1. [0.319] 9.9 [0.354] 16.8 [0.661] 11.8 [0.464] 6.35 0.5 [0.25 0.25] 15 [0.590] 1.0 dia. max. [0.039] 8.1 dia. max. [0.319] 10.10 [0.398] 14.7 [0.579] 6.35 0.5 [0.25 0.25] 9.0 [0.354] 0.3mm minimum gap 0.3mm minimum gap 0.3mm minimum gap mounting area 9.0 [0.354] mounting area 9.0 [0.354] mounting area 9.9 [0.354] 10.10 [0.398] 5.5 0.3 [0.216 0.12] 5.5 0.3 [0.216 0.12] 15 [0.590] 16.8 [0.661] 4.4 [0.173] 1.0 dia. max. [0.039] 12.4 1 [0.488 0.039] 11. 8 [0.464] 8.1. [0.319] 0.3mm minimum gap 9.0 [0.354] mounting area 10.10 [0.398] 22 [0.866] 1.0 dia. max. [0.039] 50 3 [1.968 0.118 ] 8.1 dia. max. [0.319] 11.8 [0.464] 23.8 [0.937] 9.0 [0.354] mounting area 0.3mm minimum gap type 01 / c type 60 type 06 / y type 14 / x type 04 / r type 0 5 / p profile view soldering pad layout side view top view 7.7 0.3 [0.303 0.019] 10.0 0.3 [0.394 0.019] ?7.0 0.1 [0.275 0.004] 8.3 +0.3/-0.0 [0.327 +0.019/-0.00] 8.0 +0.3/-0.1 [0.315 +0.019/-0.004] 8.5 0.0 [0.335 0.000] 2.2 0.0 [0.087 0.000] 6.0 0.0 [0.236 0.000] 10.75 0.0 [0.423 0.000] 1.2 0.0 [0.047 0.000] 1.2 0.0 [0.047 0.000] overall product space do not encroach device dimensions note: failsafe option dimensions shown in green. shaped radial leaded devices: surface mount devices: straight radial leaded devices: straight "t" leaded devices:
?2009 littelfuse, inc. gas discharge tube (gdt) products 23 revised: november 10, 2009 speci?cations are subject to change without notice. please refer to www.littelfuse.com for current information. customer should verify actual device performance in their speci?c applications. sl1021a/b, sl1024a/b and pmt8 series sl1021a/b, sl1024a/b and pmt8 series packaging part numbering system and ordering information pmt8 xxx x x breakdown voltage 090 = 90v 230 = 230v 2 5 0 = 2 5 0v 3 5 0 = 3 5 0v 400 = 400v breakdown voltage 090 = 90v 14 5 = 14 5 v 1 5 0 = 1 5 0v 200 = 200v 230 = 230v 2 5 0 = 2 5 0v 260 = 260v 300 = 300v 3 5 0 = 3 5 0v 400 = 400v 420 = 420v 4 5 0 = 4 5 0v 5 00 = 5 00v 600 = 600v series pm t 8 con?guration code option code blank = no failsafe f = with failsafe sl102x x xxx x x series sl1021 sl1024 surge capability a = 10ka b = 20ka con?guration code (see device dimensions section) (see device dimensions section) c r p 01 04 0 5 06 y s x 10 14 60 blank = no failsafe f or g = with failsafe option code device type description quantity type 01 / c 100pcs/tray x 5 trays per carton 500 type 04 / r 100pcs/tray x 5 trays per carton 500 type 05 / p 100pcs/tray x 5 trays per carton 500 type 06 / y 100pcs/tray x 5 trays per carton 500 type 14 / x 50pcs/tray x 5 trays per carton 250 type 60 500pcs/reel* x 10 reels per carton 5000 * for tape and reel speci?cations, please contact factory.
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