Gas DischarGe Tubes
General Characteristics
Solderability
•ꢀAllꢀthru-holeꢀtypesꢀcomplyꢀwithꢀMILꢀSTDꢀ202G,ꢀMethodꢀ208H.
•ꢀForꢀsurfaceꢀmountꢀtypesꢀseeꢀbelowꢀ(J-STD-020C).
Features
•ꢀ ULꢀRecognition.
•ꢀ CULꢀRecognitionꢀ(specificꢀtypes).
•ꢀ ComplianceꢀtoꢀMILꢀSTDꢀ202G,ꢀmethodꢀ208Hꢀandꢀ106.
•ꢀ CanꢀbeꢀusedꢀtoꢀmeetꢀtheꢀrequirementsꢀofꢀGR-1361ꢀandꢀITUꢀK.12.
•ꢀ AQLꢀbasedꢀonꢀMILꢀSTDꢀ1916
Lead-Free Reflow Profile Recommendation (IPC/JEDEC
J-STD-020C
Reflow Parameter
Lead-Free Assembly
•ꢀ RoHsꢀCompliantꢀandꢀHalogenꢀFree.
Minimum preheat temperature (TsMIN)
150°C
Maximum preheat temperature (TsMAX) 200°C
Temperature Rating
Preheat Time
60-180ꢀseconds
Storageꢀ-40°Cꢀtoꢀ+150°C
Operateꢀ-40°Cꢀtoꢀ+90°C
TsMAXꢀtoꢀTLꢀramp-upꢀrate
TimeꢀaboveꢀtemperatureꢀTLꢀ(tLꢀ)
Peak Temperature (TP)
Timeꢀ25°CꢀtoꢀTP
3°C/secondꢀmaximum
217°Cꢀ60-120ꢀseconds
245°Cꢀ~260°C(recommendedꢀ250°Cꢀ)
6 minute maximum
100% Inspection
•ꢀ DCꢀBreakdown,ꢀinsulationꢀresistance,ꢀphysicalꢀdimensions,ꢀlead/weldꢀꢀ
strength and appearanceꢀ
•ꢀ Allꢀotherꢀgasꢀtubeꢀcharacteristicsꢀareꢀcheckedꢀusingꢀtheꢀappropriate
sampling proceduresꢀ
•ꢀ ISOꢀ9001ꢀCertified.
Timeꢀwithinꢀ5°ꢀofꢀPeakꢀTP
Ramp-downꢀrate
10-20ꢀseconds
4°C/secondꢀmaximum
IR/Convection Reflow Profile (IPC/JEDEC J-STD-020C)
•ꢀ GasꢀTubesꢀhaveꢀnoꢀradioactiveꢀcontent.
Tp
Tp
RAMP UP
RoHS Compliance
TSMAX
WPGT Series Gas Discharge Tubes purchased from World Products, LLC
complyꢀtoꢀaꢀmaximumꢀconcentrationꢀvalueꢀofꢀ0.1%ꢀbyꢀweightꢀinꢀhomoge-
neousꢀmaterialsꢀforꢀleadꢀ(Pb),ꢀmercury,ꢀhexavalentꢀchromium,ꢀpolybrominatedꢀ
biphenyls (PBB) and polybrominated diphenyl ethers (PBDE) and of 0ꢀ01%
weight in homogeneous materials for cadmium and are in compliance with
Directiveꢀ2002/95/ECꢀofꢀtheꢀEuropeanꢀParliamentꢀandꢀofꢀtheꢀCouncilꢀofꢀ27ꢀ
January 2003 on the restriction of the use of certain hazardous substances
inꢀelectricalꢀandꢀelectronicꢀequipmentꢀ(RoHSꢀDirective).ꢀꢀFailꢀsafeꢀtypesꢀwithꢀ
dateꢀcodeꢀofꢀ10/05ꢀorꢀafterꢀcomplyꢀtoꢀRoHSꢀstandardsꢀstatedꢀabove.ꢀ
TSMIN
RAMP DOWN
PREHEAT
25
t 25ºC TO PEAK
TIME
Terms and Definitions
Theꢀvoltageꢀmeasuredꢀatꢀaꢀriseꢀtimeꢀofꢀ100v/s.
DC Breakdown Voltage
Theꢀmaximumꢀbreakdownꢀvoltageꢀatꢀriseꢀtimesꢀofꢀ100v/usꢀandꢀ1000v/usꢀforꢀ99%ꢀofꢀmeasuredꢀvalues.
Maximum Impulse Breakdown Voltage
Theꢀmaximumꢀcurrentꢀapplyingꢀaꢀwaveformꢀofꢀ8/20usꢀthatꢀcanꢀbeꢀappliedꢀacrossꢀtheꢀterminalsꢀofꢀtheꢀgasꢀ
tubeꢀwithoutꢀcausingꢀtheꢀgasꢀtubeꢀtoꢀchangeꢀmoreꢀthanꢀ-20%,ꢀ+30%ꢀfromꢀitsꢀinitialꢀmeasuredꢀDCꢀbreakdownꢀ
voltage.ꢀꢀDwellꢀtimeꢀbetweenꢀpulsesꢀisꢀ3ꢀminutes.
Maximum Impulse Discharge Current
Alternating Discharge Current
RatedꢀRMSꢀvalueꢀofꢀACꢀcurrentꢀatꢀ50Hz,ꢀ1ꢀsec.ꢀ10ꢀtimes.ꢀIntervals:ꢀꢀ3min.ꢀDCꢀbreakdownꢀvoltageꢀmayꢀnotꢀ
changeꢀmoreꢀthanꢀ±25%ꢀfromꢀitsꢀinitialꢀmeasuredꢀDCꢀbreakdownꢀvoltage.ꢀIRꢀ>ꢀ108 ohmsꢀ(-20%,ꢀ+30%ꢀforꢀ
70 – 90V)ꢀ
Theꢀminimumꢀnumberꢀofꢀimpulsesꢀofꢀaꢀspecifiedꢀwaveformꢀandꢀpeakꢀcurrentꢀwhichꢀaꢀgasꢀtubeꢀwillꢀconductꢀ
withoutꢀcausingꢀtheꢀgasꢀtubeꢀtoꢀchangeꢀmoreꢀthanꢀ±25%ꢀfromꢀitsꢀinitialꢀmeasuredꢀDCꢀbreakdownꢀvoltage.ꢀ
Dwellꢀtimeꢀbetweenꢀpulsesꢀisꢀ1-2ꢀminutes.ꢀꢀꢀ
Impulse Life
TheꢀmaximumꢀDCꢀvoltageꢀacrossꢀtheꢀtwoꢀterminalsꢀofꢀtheꢀgasꢀtubeꢀunderꢀwhichꢀitꢀmayꢀbeꢀexpectedꢀtoꢀreturnꢀ
to the high impedance state after the gas tube breakdownꢀ
DC Holdover Voltage
The resistance of the gas tube shall be measured each terminal to each other terminalꢀ
DC Breakdown Voltage
Measuring Voltage
70-150V
151-400V
470-1000V
1001-2000V
2001-6000V
50V
100V
250V
500V
1000V
Insulation Resistance
Capacitance
Theꢀcapacitanceꢀofꢀaꢀgasꢀtubeꢀshallꢀbeꢀmeasuredꢀeachꢀterminalꢀtoꢀeachꢀotherꢀterminal.ꢀTestꢀfrequency:ꢀ
1MHzꢀꢀInꢀmeasurementsꢀinvolvingꢀ3-electrodeꢀgasꢀtubes,ꢀtheꢀterminalꢀnotꢀbeingꢀtestedꢀshallꢀbeꢀconnectedꢀ
to a ground planeꢀ
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
WPI [ World Produts Inc. ]
