Gas Discharge Tube (GDT) Products 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 failsafe clip. Please refer to the electrical specifications, 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/μS to 1KV/μS, 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 suffix 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 configuration is used in applications where simultaneous crowbar action of two signal lines is required. Agency Approvals AGENCY AGENCY FILE NUMBER E128662 ® 3 Electrode GDT Graphical Symbol a b a = TIP b = RING e = GROUND (center electrode) e Features • RoHS compliant • Low insertion loss • Excellent response to fast rising transients • Ultra low capacitance • 10KA (A suffix devices) / 20KA (B suffix devices) surge capability tested with 8/20μs pulse as defined by IEC 61000-4-5 • Available with thermal failsafe option (add ‘F’ suffix to part number) Product Characteristics Materials Dull Tin Plate 17.5 ± 12.5 Microns. with ceramic insulator Product Marking ‘LF’ mark, voltage& date code: SL102xA - Red/White text SL102xB & PMT8 - Blue/White text Glow to arc transition current ~ 1Amp Glow Voltage ~60-200 Volts Storage and Operation Temperature -40 to +90°C Transverse Voltage (Delay Time) < 0.2μSec (Tested to ITU-T Rec. K.12) Arc Voltage ~10 to 35 Volts Holdover Voltage <150mS (Tested to ITU-T Rec. K.12) 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 ©2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com for current information. Customer should verify actual device performance in their specific applications. 19 Revised: November 10, 2009 SL1021A/B, SL1024A/B and PMT8 Series Gas Discharge Tube (GDT) Products SL1021A/B, SL1024A/B and PMT8 Series Electrical Characteristics Device Specifications (at 25°C) Part Number* DC Voltage 100V/Sec. DC Voltage 100 V/ μSec. DC Voltage 1kV/ μSec. MIN TYP MAX SL1021A090 SL1024A090 SL1021B090 SL1024B090 PMT 8 090 72 90 108 SL1021A145 SL1024A145 SL1021B145 SL1024B145 116 145 174 SL1021A150 SL1024A150 SL1021B150 SL1024B150 120 150 180 SL1021A200 150 200 250 SL1021A230 SL1024A230 SL1021B230 SL1024B230 PMT 8 230 184 230 276 SL1021A250 SL1024A250 SL1021B250 SL1024B250 PMT 8 250 200 250 300 500 SL1021A260 SL1024A260 SL1021B260 SL1024B260 210 260 310 550 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 Life Ratings Capacitance (@1Mhz) Insulation Resistance MIN AC Current 50Hz 1Sec.x101 Surge Current 8/20μSec x101 Max Single Surge 8/20μSec1 650 Max Single Surge 10/350μSec1 Surge Life 10/1000 μSecx3001 4kA2 5kA3 500 600 450 650 700 <1.5pF 10Amps 10kA2 20kA3 15kA2 25kA3 200Amps 2.5kA2 5kA3 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 SL1021A/B, SL1024A/B and PMT8 Series 20 Revised: November 10, 2009 ©2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com for current information. Customer should verify actual device performance in their specific applications. Gas Discharge Tube (GDT) Products SL1021A/B, SL1024A/B and PMT8 Series Voltage vs. Time Characteristic Time vs. Current for Failsafe 60 Max dynamic breakover voltage SL102xA with Failsafe SL102xB or PMT8 500 Volt Higher Melting Point Solder SL102xB or PMT8 350 Volt Higher Melting Point Solder SL102xB or PMT8 90 Volt Higher Melting Point Solder 30 20 Voltage (V) 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 Hold-over voltage On-State voltage 0.5 1 2 5 10 15 0 30 200 400 600 800 1000 1200 Time (ns) Soldering Parameters - Reflow Soldering (Surface Mount Devices) Pre Heat Pb – Free assembly Critical Zone TL to TP Ramp-up - Temperature Min (Ts(min)) 150°C - Temperature Max (Ts(max)) 200°C - Time (Min to Max) (ts) 60 – 180 secs TL TS(max) Average ramp up rate (Liquidus Temp (TL) to peak 3°C/second max TS(max) to TL - Ramp-up Rate 5°C/second max Reflow tP TP - Temperature (TL) (Liquidus) 217°C - Temperature (tL) 60 – 150 seconds Temperature Reflow Condition tL Ramp-down Preheat TS(min) tS 25 Peak Temperature (TP) 260+0/-5 °C Time within 5°C of actual peak Temperature (tp) 10 – 30 seconds Ramp-down Rate 6°C/second max Time 25°C to peak Temperature (TP) 8 minutes Max. Do not exceed 260°C time to peak temperature (t 25ºC to peak) Time Soldering Parameters - Hand Soldering Solder Iron Temperature: 350° C +/- 5°C Heating Time: 5 seconds max. Soldering Parameters - Wave Soldering (Thru-Hole Devices) Recommended Process Parameters: 280 Wave Parameter 260 240 Lead-Free Recommendation Preheat: 220 (Depends on Flux Activation Temperature) 200 180 160 140 (Typical Industry Recommendation) Temperature Minimum: 100° C Temperature Maximum: Preheat Time: 150° C 60-180 seconds 120 100 Solder Pot Temperature: 280° C Maximum Solder Dwell Time: 2-5 seconds 80 60 40 240 230 220 210 200 190 180 170 160 150 140 130 120 110 90 100 80 70 60 50 40 20 0 0 30 20 10 Temperature (°C) - Measured on bottom side of board 300 Note: Surge Arrestors with a Failsafe mechanism should be individually examined after soldering Time (Seconds) Cooling Time Preheat Time Dwell Time ©2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com for current information. Customer should verify actual device performance in their specific applications. 21 Revised: November 10, 2009 SL1021A/B, SL1024A/B and PMT8 Series Gas Discharge Tube (GDT) Products SL1021A/B, SL1024A/B and PMT8 Series Device Dimensions NOTE: Failsafe option dimensions shown in green. Shaped Radial Leaded Devices: Surface Mount Devices: 12.4 ± 1 [0.488 ± 0.039] Type 04 / R 11.8 [0.464] Mounting Area 9.0 [0.354] 10.10 [0.398] 8.1. [0.319] Mounting Area 9.0 [0.354] 11.8 [0.464] Type 01 / C 10.10 [0.398] 8.1 [0.319] 0.3mm Minimum Gap 0.3mm Minimum Gap 9.9 [0.354] 9.9 [0.354] 15 [0.590] 16.8 [0.661] 4.4 [0.173] 1.0 DIA. MAX. [0.039] 10.0 ± 0.3 [0.394 ± 0.019] Type 60 4.4± 0.3 [0.173± 0.12] 7.7 ± 0.3 [0.303 ± 0.019] Ø7.0 ± 0.1 [0.275 ± 0.004] 4.4± 0.3 [0.173± 0.12] 12.4 ± 1 [0.488 ± 0.039] Type 05 / P 11.8 [0.464] Mounting Area 9.0 [0.354] 10.10 [0.398] 8.1. [0.319] 8.3 +0.3/-0.0 [0.327 +0.019/-0.00] 8.0 +0.3/-0.1 [0.315 +0.019/-0.004] PROFILE VIEW 0.3mm Minimum Gap SIDE VIEW 1.2 ± 0.0 [0.047 ± 0.000] 9.9 [0.354] TOP VIEW 2.2 ± 0.0 [0.087 ± 0.000] 1.2 ± 0.0 [0.047 ± 0.000] 6.0 ± 0.0 [0.236 ± 0.000] 15 [0.590] 16.8 [0.661] 4.4 [0.173] 8.5 ± 0.0 [0.335 ± 0.000] 1.0 DIA. MAX. [0.039] 10.75 ± 0.0 [0.423 ± 0.000] 5.5± 0.3 [0.216± 0.12] Overall Product Space DO NOT ENCROACH SOLDERING PAD LAYOUT 5.5± 0.3 [0.216± 0.12] Straight "T" Leaded Devices: Straight Radial Leaded Devices: 14.7 [0.579] Type 06 / Y Type 14 / X 50 ± 3 [1.968 ± 0.118 ] Mounting Area 9.0 [0.354] 11.8 [0.464] 10.10 [0.398] 11.8 [0.464] Mounting Area 9.0 [0.354] 10.10 [0.398] 8.1 DIA. MAX. [0.319] 0.3mm Minimum Gap 8.1 DIA. MAX. [0.319] 9.9 [0.354] 0.3mm Minimum Gap 15 [0.590] 23.8 [0.937] 22 [0.866] 16.8 [0.661] 1.0 DIA. MAX. [0.039] 6.35 ± 0.5 [0.25 ± 0.25] SL1021A/B, SL1024A/B and PMT8 Series 1.0 DIA. MAX. [0.039] 22 Revised: November 10, 2009 6.35 ± 0.5 [0.25 ± 0.25] ©2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com for current information. Customer should verify actual device performance in their specific applications. Gas Discharge Tube (GDT) Products SL1021A/B, SL1024A/B and PMT8 Series Packaging Part Numbering System and Ordering Information SL102x x xxx x x PMT8 xxx x x Device Type PMT8 SL1021 SL1024 Surge Capability A = 10kA B = 20kA Breakdown Voltage 090 = 90V 145 = 145V 150 = 150V 200 = 200V 230 = 230V 250 = 250V 260 = 260V Description Quantity Series Series 300 = 300V 350 = 350V 400 = 400V 420 = 420V 450 = 450V 500 = 500V 600 = 600V Breakdown Voltage 090 = 90V 230 = 230V 250 = 250V 350 = 350V 400 = 400V 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 500pcs/reel* x 10 reels per carton 5000 Type 60 * For tape and reel specifications, please contact factory. Configuration Code Configuration Code (See Device Dimensions section) C Y R S P X (See Device Dimensions section) 01 10 04 14 05 60 06 Option Code Option Code Blank = No failsafe F or G = With Failsafe Type 01 / C Blank = No Failsafe F = With Failsafe ©2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com for current information. Customer should verify actual device performance in their specific applications. 23 Revised: November 10, 2009 SL1021A/B, SL1024A/B and PMT8 Series Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Littelfuse: SL1021A450RG SL1021A090RG SL1021A145RG SL1021A200RG SL1021A500RG SL1021A150RG SL1021A300RG SL1021A600RG SL1021A350RG SL1021A420RG SL1021A400RG SL1021A230RG SL1021A260RG SL1021A250RG SL1021A260C SL1021A260R SL1021A090T SL1021A400C SL1021A230R SL1021A400RF SL1021A300RF SL1021A600C SL1021A600RF SL1021A145R SL1021A260RS SL1021A250RS SL1021A500CF SL1021A450R SL1021A150C SL1021A090RS SL1021A350RS SL1021A200RS SL1021A450RS SL1021A500T SL1021A090C SL1021A300C SL1021A400R SL1021A500C SL1021A500RF SL1021A600RS SL1021A230RS SL1021A300R SL1021A500R SL1021A200T SL1021A200C SL1021A260T SL1021A200RF SL1021A230RF SL1021A350RF SL1021A145RS SL1021A230C SL1021A450C SL1021A145RF SL1021A350R SL1021A350T SL1021A150RF SL1021A500RS SL1021A260RF SL1021A090R SL1021A420R SL1021A200R SL1021A420RF SL1021A150R SL1021A230CF SL1021A250R SL1021A145C SL1021A150RS SL1021A090RF SL1021A450RF SL1021A420C SL1021A350C SL1021A600R SL1021A400RS SL1021A230T SL1021A250C SL1021A420RS SL1021A250RF SL1021A300RS