Gas Discharge Tube (GDT) Products CG/CG2 Series CG/CG2 Series Description Littelfuse highly reliable CG/CG2 Series GDTs provide a high degree of surge protection in a small size ideal for board level circuit protection. GDTs function as switches which dissipate a minimum amount of energy and therefore handle currents that far surpass other types of transient voltage protection. Their gas-filled, rugged ceramic metal construction make them well suited to adverse environments. The CG/CG2 series comes in a variety of forms including surface mount, core, straight and shaped leads, to serve a variety of mounting methods. Agency Approvals AGENCY The CG Series (75-110V) is ideal for protection of test and communication equipment and other devices in which low voltage limits and extremely low arc voltages are required. AGENCY FILE NUMBER & & The CG2 Series (145V-1000V) is ideal for protecting equipment where higher voltage limits and holdover voltages are necessary. 2 Electrode GDT Graphical Symbol Features t3VHHFE$FSBNJD.FUBM construction t-PX$BQBDJUBODF (<1.5pf) t.FFUT3&"1& t"WBJMBCMFJOTVSGBDF mount, and a variety of lead options options Applications t$PNNVOJDBUJPOMJOFT and equipment t$"57FRVJQNFOU t5FTUFRVJQNFOU t%BUBMJOFT t1PXFSTVQQMJFT CG/CG2 Series 20 Revised: September 26, 2011 t*OTUSVNFOUBUJPODJSDVJUT t.FEJDBMFMFDUSPOJDT t"%4-FRVJQNFOU t5FMFDPN4-*$ protection (c)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 CG/CG2 Series Electrical Characteristics Device Specifications (at 25C) DC Breakdown in Volts (@100V/s) Part Number MIN TYP MAX Impulse Breakdown in Volts Impulse Breakdown In Volts (@100V/s) (@1 Kv/sec) MIN 60 75 90 400 650 CG90 72 90 108 400 600 CG90 SN 72 90 108 400 600 CG110 88 110 132 450 600 CG2145 116 145 174 500 600 CG2145 SN 120 145 174 500 600 CG2230 195 230 265 600 700 CG2230 SN 184 230 276 600 700 CG2250 213 250 288 625 725 CG2250 SN 200 250 300 625 725 CG2300 !.)[ MAX CG75 255 300 345 700 800 CG2300 SN 240 300 360 700 800 CG2350 297 350 403 750 900 CG2350 SN 280 350 420 750 900 CG2420 357 420 483 800 1000 CG2470 1200 400 470 540 850 CG2470 SN 376 470 564 850 1200 CG2600 510 600 690 1000 1400 CG2600 SN 480 600 720 1000 1400 CG28001 680 800 920 1200 1500 CG210001 850 1000 1150 1500 1600 Life Ratings Insulation CapaciArc Resistance tance Voltage MAX (on state Voltage) !"NQ .JO Surge Life !" 10/1000s) Nominal Nominal AC DC Max Impulse AC Dischage Holdover Impulse Discharge Discharge Current Voltage2 Discharge (9 cycle Current Current Current (10x1sec !)[ T !)[ TYP "QQMJDBUJPO !T TYP 52 V 1010 (at 50V) 4kA 80 V 1.5 pf 15 V 400 shots 10 shots (@20kA)3 20 A 100 A 1010 (at 100V) 2.5kA 135 V 10 shots (@10kA) 10 A 65 A /05&4 5FTUFEUP6-5IJSE&EJUJPO 3FGFSFODF3&"1& "5FTUFEUP*5653FD,BOE3&"1&N4FD Product Characteristics Materials Product Marking LS, Axial: %FWJDF/JDLFM1MBUFEo.JDSPOT -FBE8JSFT5JO1MBUFE.JDSPOT $POTUSVDUJPO$FSBNJD*OTVMBUPS Core: %FWJDF5JO1MBUFE.JDSPOT $POTUSVDUJPO$FSBNJD*OTVMBUPS MS: %FWJDF%VMM5JO1MBUFEo.JDSPOT $POTUSVDUJPO$FSBNJD*OTVMBUPS Glow to arc transition current "NQT Glow Voltage 7PMUT Storage and Operational Temperature -40 to +90 Maximum Follow On Current1 7PMUTSNT "NQT 7BOE7EFWJDFTUFTUFEUP6-SEFEJUJPO LF Logo, Voltage and date code; Black in positive print (c)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. 21 Revised: September 26, 2011 CG/CG2 Series Gas Discharge Tube (GDT) Products CG/CG2 Series Device Dimensions Leaded 'L' Type Straight Axial Devices PROFILE VIEW Leaded 'LS' Type Shaped Lead Devices TOP VIEW PROFILE VIEW TOP VIEW 6.07 0.3 [0.239 0.012] 8.10 Max. [0.319 DIA Max.] 0.81DIA. TYP. [0.032] 8.10DIA. MAX. [0.319] 8.40 0.3 [0.331 0.012] 6.07 0.15 [0.239 0.006] 0.004 62 2 8.4 0.3 [0.331 0.012] 0.40 0.03 [0.0157 0.0012] 2 Surfaces 9.85 0.30 [0.388 0.012] 0.80 [0.032] 11.15 0.30 [0.439 0.012] SOLDER PAD LAYOUT Core Devices 9.85 [0.388] TOP VIEW PROFILE VIEW 8.10 Max. [0.032 Max.] 8.60 [0.339] SEMI-PROFILE VIEW 6.07 0.15 [0.239 0.0059] 1.80 [0.071] 5.89 [0.232] 8.10 Max. 11.65 [0.459] 'MS' Type Devices 0.47 0.1 [0.019 0.0039] TOP VIEW PROFILE VIEW 8.30 0.1 [0.327 0.0039] 4 0.2 [0.157 0.0079] SEMI-PROFILE VIEW 5.58 [0.220] 6.05 0.2 [0.238 0.0079] o8.300.1 R5.29 [R0.208] 2 9] 0. 7 .00 30 0 9. 6 6 .3 [0 0.47 0.1 [0.019 0.0039] SOLDER PAD LAYOUT 2.29 [0.090] 8.71 [0.343] 5.89 [0.232] CG/CG2 Series 22 Revised: September 26, 2011 (c)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 CG/CG2 Series Soldering Parameters - Reflow Soldering (Surface Mount Devices) 1Co'SFFBTTFNCMZ Pre Heat Critical Zone TL to TP Ramp-up - Temperature Min (Ts(min)) 150C - Temperature Max (Ts(max)) 200C - Time (Min to Max) (ts) oTFDT TL TS(max) Average ramp up rate (Liquidus Temp (TL) to peak $TFDPOENBY TS(max) to TL - Ramp-up Rate 5C/second max Reflow tP TP - Temperature (TL) (Liquidus) 217C - Temperature (tL) oTFDPOET Temperature Reflow Condition tL Ramp-down Preheat TS(min) tS 25 Peak Temperature (TP) +0/-5 C Time within 5C of actual peak Temperature (tp) oTFDPOET Ramp-down Rate $TFDPOENBY Time 25C to peak Temperature (TP) NJOVUFT.BY Do not exceed $ time to peak temperature (t 25C to peak) Time Soldering Parameters - Wave Soldering (Thru-Hole Devices) Recommended Process Parameters: 280 Wave Parameter 260 240 Lead-Free Recommendation Preheat: 220 %FQFOETPO'MVY"DUJWBUJPO5FNQFSBUVSF 200 180 160 140 120 100 5ZQJDBM*OEVTUSZ3FDPNNFOEBUJPO 5FNQFSBUVSF.JOJNVN 100 C 5FNQFSBUVSF.BYJNVN 1SFIFBU5JNF 150 C TFDPOET Solder Pot Temperature: $.BYJNVN Solder Dwell Time: 2-5 seconds 80 60 40 240 230 220 210 200 190 180 170 160 150 140 130 120 110 90 100 80 70 60 50 40 20 0 0 30 20 10 Temperature (C) - Measured on bottom side of board 300 Time (Seconds) Cooling Time Preheat Time Dwell Time Soldering Parameters - Hand Soldering 4PMEFS*SPO5FNQFSBUVSF$ $ )FBUJOH5JNFTFDPOETNBY (c)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. 23 Revised: September 26, 2011 CG/CG2 Series Gas Discharge Tube (GDT) Products CG/CG2 Series Packaging Dimensions For 'L' Type Axial Lead Items <1.2 Max. Lead Bend 254.0 - 356.0 [10.0 - 14.0] <0.8 Max Direction of Feed 0.0 15] 52.4 [2.063] 22.8 [0.898] 6.4 [0.252] 5.0 Pitch [0.197] Core and 'MS' Type Items 275.0 [10.83] 10x4 0.1 = 40 0.2 [10 x 0.157 0.004 = 1.575 0.008] 1.75 0.1 [0.069 0.004] 0.4 0.05 [0.016 0.002] 100.0 [3.94] 4 0.1 [0.157 0.004] 1.5 DIA. MAX. [0.059] 76.0 [2.99] 25.0 [0.98] 7.5 0.1 [0.295 0.004] 8.5 0.1 [0.335 0.004] 17.7 [0.697] 16 +0.3 / -0.1 [0.630 +0.012 / -0.004] Direction of Feed 1.5 DIA. MAX. [0.059] 8.6 0.1 [0.339 0.004] 12 0.1 [0.472 0.004] For 'LS' Type Shaped Lead Items 275.0 [10.82] 10x4 0.1 = 40 0.2 [10x.157 0.004 = 1.575 0.008] 1.75 0.1 [0.069 0.004] 0.5 0.05 [0.020 0.002] 1.9 [0.075] 11.75 0.1 [0.463 0.004] 1.5 DIA. MAX. [0.059] 100.0 [3.93] 4 0.1 [0.157 0.004] 76.0 [2.99] 25.0 [0.98] 11.5 0.1 [0.453 0.004] 8 0.1 [0.315 0.004] 24 +0.3 / -0.1 [0.945 +0.019 / -0.004] 25.7 [1.01] Direction of Feed 0.5 0.01 [0.020 0.004] 9 0.1 [0.354 0.004] CG/CG2 Series 1.5 DIA. MAX. [0.059] 16 0.1 [0.630 0.004] 24 Revised: September 26, 2011 (c)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 CG/CG2 Series Part Numbering System and Ordering Information CG2 XXX XX * XX Series CG -- for 75, 90, or 110V CG2 -- for 145V to 1000V Examples: CG75"OPOMFBEFE7EFWJDF Breakdown Voltage 75 90 110 145 230 250 300 350 470 600 800 1000 Lead Option Code CG2230L"MFBEFE7EFWJDF CG2800LTR"MFBEFE7EFWJDF UBQFBOESFFM QFS&*"TUBOEBSE34% Notes: CG/CG2 devices with other breakdown voltages in the 75-1000 V range are available upon request. (Blank) = No Leads / Core L = Straight Leads LS = Shaped Leads MS = Surface Mount Option Code* SN = may have different DC Breakover Voltage Limit. Please refer to Electrical Characteristics table for additional information. Packaging Option Code (Blank) = No Leads / Core, Bulk Bag - 400 pcs L(Blank) = Straight Lead, Tray - 50 pcs LTR = Straight Lead, Tape & Reel per EIA RS-296-E - 500 per reel LTE = Straight Lead, Tape & Reel per IEC 60286-1 - 500 per reel LS(Blank) = Shaped Lead (see LS dimensions), Tape & Reel - 500 per reel (c)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. 25 Revised: September 26, 2011 CG/CG2 Series