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WPGT-AE420D17 Datasheet(PDF) 4 Page - World Produts Inc. |
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WPGT-AE420D17 Datasheet(HTML) 4 Page - World Produts Inc. |
4 / 34 page Gas DischarGe Tubes WORLD PRODUCTS INC. 19654 Eighth Street East, Sonoma, CA 95476 | Phone (707) 996-5201 | Fax (707) 996-3380 | www.worldproducts.com Rev. 13.9 2 | Gas Discharge Tubes General Characteristics Features • ULRecognition. • CULRecognition(specifictypes). • CompliancetoMILSTD202G,method208Hand106. • CanbeusedtomeettherequirementsofGR-1361andITUK.12. • AQLbasedonMILSTD1916 • RoHsCompliantandHalogenFree. Temperature Rating Storage-40°Cto+150°C Operate-40°Cto+90°C 100% Inspection • DCBreakdown,insulationresistance,physicaldimensions,lead/weld strength and appearance . • Allothergastubecharacteristicsarecheckedusingtheappropriate sampling procedures . • ISO9001Certified. • GasTubeshavenoradioactivecontent. RoHS Compliance WPGT Series Gas Discharge Tubes purchased from World Products, LLC complytoamaximumconcentrationvalueof0.1%byweightinhomoge- neousmaterialsforlead(Pb),mercury,hexavalentchromium,polybrominated biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) and of 0 .01% weight in homogeneous materials for cadmium and are in compliance with Directive2002/95/ECoftheEuropeanParliamentandoftheCouncilof27 January 2003 on the restriction of the use of certain hazardous substances inelectricalandelectronicequipment(RoHSDirective).Failsafetypeswith datecodeof10/05oraftercomplytoRoHSstandardsstatedabove. Solderability •Allthru-holetypescomplywithMILSTD202G,Method208H. •Forsurfacemounttypesseebelow(J-STD-020C). Terms and Definitions DC Breakdown Voltage Thevoltagemeasuredatarisetimeof100v/s. Maximum Impulse Breakdown Voltage Themaximumbreakdownvoltageatrisetimesof100v/usand1000v/usfor99%ofmeasuredvalues. Maximum Impulse Discharge Current Themaximumcurrentapplyingawaveformof8/20usthatcanbeappliedacrosstheterminalsofthegas tubewithoutcausingthegastubetochangemorethan-20%,+30%fromitsinitialmeasuredDCbreakdown voltage.Dwelltimebetweenpulsesis3minutes. Alternating Discharge Current RatedRMSvalueofACcurrentat50Hz,1sec.10times.Intervals:3min.DCbreakdownvoltagemaynot changemorethan±25%fromitsinitialmeasuredDCbreakdownvoltage.IR>108 ohms(-20%,+30%for 70 – 90V) . Impulse Life Theminimumnumberofimpulsesofaspecifiedwaveformandpeakcurrentwhichagastubewillconduct withoutcausingthegastubetochangemorethan±25%fromitsinitialmeasuredDCbreakdownvoltage. Dwelltimebetweenpulsesis1-2minutes. DC Holdover Voltage ThemaximumDCvoltageacrossthetwoterminalsofthegastubeunderwhichitmaybeexpectedtoreturn to the high impedance state after the gas tube breakdown . Insulation Resistance The resistance of the gas tube shall be measured each terminal to each other terminal . DC Breakdown Voltage Measuring Voltage 70-150V 151-400V 470-1000V 1001-2000V 2001-6000V 50V 100V 250V 500V 1000V Capacitance Thecapacitanceofagastubeshallbemeasuredeachterminaltoeachotherterminal.Testfrequency: 1MHzInmeasurementsinvolving3-electrodegastubes,theterminalnotbeingtestedshallbeconnected to a ground plane . Lead-Free Reflow Profile Recommendation (IPC/JEDEC J-STD-020C Reflow Parameter Lead-Free Assembly Minimum preheat temperature (TsMIN) 150°C Maximum preheat temperature (TsMAX) 200°C Preheat Time 60-180seconds TsMAXtoTLramp-uprate 3°C/secondmaximum TimeabovetemperatureTL(tL) 217°C60-120seconds Peak Temperature (TP) 245°C~260°C(recommended250°C) Time25°CtoTP 6 minute maximum Timewithin5°ofPeakTP 10-20seconds Ramp-downrate 4°C/secondmaximum PREHEAT TIME t 25ºC TO PEAK RAMP DOWN RAMP UP IR/Convection Reflow Profile (IPC/JEDEC J-STD-020C) Tp Tp 25 T SMAX T SMIN |
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