Gas Discharge Tube (GDT) Products SG Series SG Series Description Littelfuse SG series GDT offers high surge ratings in a miniature package. It’s designed for surface mounting on PCB with small size 4.5x3.2x2.7mm. Low insertion loss is perfectly suited to broadband equipment applications. The capacitance does not vary with voltage, and will not cause operational problems with ADSL2+, where capacitance variation across Tip and Ring is undesirable. These devices are extremely robust and are able to divert a 1000A pulse without destruction. Features Agency Approvals AGENCY t3P)4DPNQMJBOUBOE Lead-free t()[XPSLJOHGSFRVFODZ t&YDFMMFOUTUBCJMJUZPO multiple pulse duty cycle t&YDFMMFOUSFTQPOTFUP fast rising transients. t6MUSB-PX*OTFSUJPO-PTT t,"TVSHFDBQBCJMJUZ tested with 8/20μS QVMTFBTEFmOFECZ*&$ 61000-4-5 AGENCY FILE NUMBER E128662 2 Electrode GDT Graphical Symbol t6MUSBTNBMMEFWJDFT offered in a variety of mounting lead forms t/PO3BEJPBDUJWF t-PXDBQBDJUBODFQ' t7PMUBHF3BOHFT7UP 7 t6-SFDPHOJ[FE t$POGPSNTUP*565, *&$ t4RVBSF0VUMJOF Applications t Communication equipment t$"57FRVJQNFOU t5FTUFRVJQNFOU t%BUBMJOFT t1PXFSTVQQMJFT t5FMFDPN4-*$ protection ©2011 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. 63 Revised: September 26, 2011 t#SPBECBOEFRVJQNFOU t"%4-FRVJQNFOU including ADSL2+ t9%4-FRVJQNFOU t4BUFMMJUFBOE$"57 equipment t(FOFSBMUFMFDPN equipment SG Series Gas Discharge Tube (GDT) Products SG Series Electrical Characteristics Device SpecificationsBU¡$ Life Ratings Impulse Insulation CapaciArc Glow Glow Nominal Nominal Nominal DC Breakdown Impulse Breakdown Breakdown Resistance tance Voltage to Arc Voltage AC Impulse Impulse in Volts in Volts In Volts Transition Discharge Discharge Discharge !7T !.)[ !" Current Current Current !7T !,WTFD Current Part Number MIN TYP MAX Y!)[ MAX MIN SG75 52 75 98 500 650 SG90 63 90 117 500 600 SG150 105 150 195 500 600 SG230 172 230 288 650 800 SG300 225 300 375 700 850 SG300Q 210 300 390 580 650 263 350 437 750 900 SG350Q 263 350 437 SG350 600 700 SG400 300 400 500 800 950 SG420 315 420 525 800 1000 SG420Q 315 420 525 650 750 Y!T MAX 2kA ~10 V ~1.0 A ~60 V ~12 V ~0.5 A ~90 V ~20 V ~0.8 A ~140 V ~90 V 2A ~12 V ~0.5 A ~140 V NA* ~90 V 2A ~60 V 2A ~140 V NA* 2A <1 pf !*ȍ (at 50VDC) <0.8 pf <1 pf ~10 V ~1.0 A ~20 V T DZDMFT 10 A NA* 1kA 4QFDJGJDBJPOJTOPUBQQMJDBCMFGPSRVJDLSFTQPOTF4(YYYQ WFSTJPOPGQSPEVDU Product Characteristics Voltage vs. Time Characteristic %FWJDF5JO1MBUFE.JDSPOT Construction Ceramic Insulator. Storage and Operational Temperature UP¡$ Max dynamic breakover voltage Voltage (V) Materials Typical Insertion Loss Hold-over voltage !()[E# On-State voltage !()[E# !()[E# 0 200 400 600 800 1000 1200 Time (ns) !()[E# !()[E# !()[E# !()[E# !()[E# SG Series 64 Revised: September 26, 2011 ©2011 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 SG Series Soldering Parameters - Reflow Soldering (Surface Mount Devices) 1Co'SFFBTTFNCMZ Pre Heat - Temperature Min (Ts(min)) ¡$ - Temperature Max (Ts(max)) ¡$ - Time (Min to Max) (ts) 60 – 180 secs Critical Zone TL to TP Ramp-up TL TS(max) Average ramp up rate (Liquidus Temp (TL) to peak ¡$TFDPOENBY TS(max) to TL - Ramp-up Rate ¡$TFDPOENBY Reflow tP TP Temperature Reflow Condition - Temperature (TL) (Liquidus) ¡$ - Temperature (tL) 60 – 150 seconds tL Ramp-down Preheat TS(min) tS 25 Peak Temperature (TP) 260+0/-5¡$ Time within 5°C of actual peak Temperature (tp) 10 – 30 seconds Ramp-down Rate ¡$TFDPOENBY Time 25°C to peak Temperature (TP) NJOVUFT.BY Do not exceed ¡$ time to peak temperature (t 25ºC to peak) Device Dimensions Time Part Numbering System and Ordering Information SG xxx Q Dimensions in Millimeters. Series Square GDT Breakdown Voltage 3.2 +/- 0.3 75 = 75V 90 = 90V 150 = 150V 230 = 230V 300 = 300V 350 = 350V 400 = 400V 420 = 420V 0.5 +/- 0.1 2.7 +/- 0.3 4.5 +/- 0.3 Device Option Code 5.2 (Blank) = Standard device Q = Quick Response Version (300V, 350V and 420V only) 4 2.8 Packaging Recommended Soldering Pad Layout Part Number and Device Type SGxxx Surface mount 2000pcs/reel in tape and reel 4.9 12 Tape Dimenstions 5BQFTJ[FJTBDDPSEJOHUP*&$ Quantity and Packaging Description 3 8 3.65 1.5 ©2011 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. 65 Revised: September 26, 2011 SG Series