Gas Discharge Tube (GDT) Products AC and CG3 Series AC and CG3 Series ® Description Littelfuse AC series two-electrode line protectors provide a high degree of surge protection in AC line applications. The two models, AC120 and AC240 are designed for use with 120VAC and 240VAC lines respectively. They are able to extinguish AC follow-on currents of at least 200A. Littelfuse CG3 two electrode high voltage (1.0 - 7.5 KV) devices are designed for surge protection and high isolation applications, and for applications for which bias voltages or signal levels of several hundred volts are normally present. Agency Approvals Features AGENCY ® AGENCY FILE NUMBER •Rugged ceramic-metal construction •Low capacitance (<1.5 pF) E320116* *NOTE: CG3 7.5 product UL approval is currently pending 2 Electrode GDT Graphical Symbol •Available in tape-andreel packaging •Available with or without leads Applications AC Series: •Long branch circuits (AC wall outlet) •Short branch circuits (at breaker box, computer, etc) •Power supplies •Test equipment •Submersible pumps •Medical electronics CG3 Series: •CRT terminals •CATV equipment •Antennas ©2010 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. 13 Revised: January 21, 2011 •Power supplies •Medical electronics AC and CG3 Series Gas Discharge Tube (GDT) Products AC and CG3 Series Electrical Characteristics Device Dimension Type Device Specifications (at 25°C) MIN TYP MAX MAX AC1201 A 230 285 340 500 550 AC2401 A 480 600 720 1100 1200 Part Number DC Breakdown in Volts (@100V/s) Life Ratings Impulse Impulse Insulation CapaciArc Max Nominal AC Nominal Max BreakBreak- Resistance tance Voltage Follow AC Discharge Impulse Surge (on state down down In On Discharge Current Discharge Current5 (@1MHz) Voltage) (1 x 50Hz in Volts Volts Current3 Current Current4 (@8/20µs) (@100V/µs) @1Amp Min (@1 Kv/µsec) MIN CG3 1.01 A 800 1000 1200 1400 1500 CG3 1.11 A 880 1100 1320 1600 1700 CG3 1.21 A 960 1200 1440 1700 1800 CG3 1.31 A 1040 1300 1560 1800 1900 CG3 1.51 A 1200 1500 1800 1800 2000 CG3 2.0 1 A 1600 2000 2400 2500 2750 CG3 2.51 A 2000 2500 3000 3200 3500 CG3 2.71 A 2160 2700 3240 3600 4000 CG3 3.01 A 2400 3000 3600 4000 4200 CG3 3.31 A 2640 3300 3960 4600 4700 CG3 4.0 2 B 3200 4000 4800 5800 6000 CG3 4.52 B 3600 4500 5400 6150 6500 CG3 5.02 B 4000 5000 6000 7500 8000 CG3 6.22,7 B 4960 6200 7440 8100 9500 CG3 6.52,7 B 5200 6500 7800 9500 10000 CG3 7.52,6,7 B 6000 7500 9000 10000 10600 MAX (10x1sec @50-60Hz) 9 cycles) (@8/20µs) TYP 10 GΩ <1.5 pf (at 100V) ~ 25 V 200 Amps 5A 65 A 10 shots 5kA 1 shot 10kA 10 GΩ <1.5 pf (at 100V) ~ 25 V 200 Amps N/A N/A 10 shots 5kA 1 shot 10kA NOTES: 1. Refer to Production Dimensions section, outline A devices 2. Refer to Production Dimensions section, outline B devices 3. Tested to UL1449 Third Edition -- 120V r.ms. for AC120, 230V r.m.s. all others. Conducted with suitable MOV connected in series. 4. 10 x [5(+) and 5(-)] applications 5kA @ 8/20µs 5. 1 x [1(+) and 1(-)] application 10kA @ 8/20µs 6. CG3 7.5 product UL approval is currently pending 7. When ordering this item, use suffix code D004 when entering the part number. The older product version without D004 suffix code has been discontinued. Refer to Part Numbering System section for additional information. Product Characteristics Core Outline A & B items: Device: Tin Plated 17.5±12.5 Microns Axial Outline A items: Device: Nickel Plated 2–5 Microns Wire: Tin Plated 17.5±12.5 Microns Materials Axial Outline B items: Device & Wire: Tin Plated 17.5±12.5 Microns AC and CG3 Series Product Marking LF Logo, Voltage and date code; Black ink positive print Glow to arc transition current < 0.5Amps Glow Voltage ~ 140 Volts Storage and Operational Temperature -40 to +90 14 Revised: January 21, 2011 ©2010 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 AC and CG3 Series Soldering Parameters - Reflow Soldering (Surface Mount Devices) Pb – Free assembly Pre Heat - Temperature Min (Ts(min)) 150°C - Temperature Max (Ts(max)) 200°C - Time (Min to Max) (ts) 60 – 180 secs 3°C/second max TS(max) to TL - Ramp-up Rate 5°C/second max - Temperature (TL) (Liquidus) 217°C - Temperature (tL) 60 – 150 seconds 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 tL Ramp-down Preheat TS(min) 25 Peak Temperature (TP) Critical Zone TL to TP Ramp-up TL TS(max) Average ramp up rate (Liquidus Temp (TL) to peak Reflow tP TP Temperature Reflow Condition tS time to peak temperature (t 25ºC to peak) Time Soldering Parameters - Wave Soldering (Thru-Hole Devices) Recommended Process Parameters: 280 Wave Parameter 260 Lead-Free Recommendation Preheat: 240 220 200 180 160 140 120 100 80 60 (Depends on Flux Activation Temperature) (Typical Industry Recommendation) Temperature Minimum: 100° C Temperature Maximum: Preheat Time: 150° C 60-180 seconds Solder Pot Temperature: 280° C Maximum Solder Dwell Time: 2-5 seconds 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 Solder Iron Temperature: 350° C +/- 5°C Heating Time: 5 seconds max. ©2010 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. 15 Revised: January 21, 2011 AC and CG3 Series Gas Discharge Tube (GDT) Products AC and CG3 Series Device Dimensions Axial Part Numbering System and Ordering Information PROFILE VIEW 0.80DIA. TYP. [0.031] A CG3 X.X XXX D004 AC XXX XXX TOP VIEW Series Series AC Line Voltage Breakdown Voltage CG3 120 = 120V 240 = 240V 8.0 ± 0.2 [0.314 ± 0.008] Lead / Packaging Option = Core (no leads) / Bulk pack, 400 pcs per bag L = Leaded / Bulk pack, 50 pcs per tray LTR = Leaded / Tape & Reel, 500 pcs per reel 6.0 ± 0.2 [0.236 ± 0.008] 62 ± 2 [2.441 ± 0.079] 7.9 ± 0.3 [0.311 ± 0.012] 8.0 ± 0.2 [0.314 ± 0.008] B Lead / Packaging Option = Core (no leads) / Bulk pack, 400 pcs per bag L = Leaded / Bulk pack, 50 pcs per tray LTR = Leaded / Tape & Reel, 500 pcs per reel 0.80DIA. TYP. [0.031] <1.2 Max. Lead Bend SEMI–PROFILE VIEW Core PROFILE VIEW 1.0 = 1000V 1.1 = 1100V 1.2 = 1200V 1.3 = 1300V 1.5 = 1500V 2.0 = 2000V 2.5 = 2500V 2.7 = 2700V 3.0 = 3000V 3.3 = 3300V 4.0 = 4000V 4.5 = 4500V 5.0 = 5000V 6.2 = 6200V 6.5 = 6500V 7.5 = 7500V Special Suffix Code Enter this D004 special suffix code when placing orders for CG36.2, CG36.5 and CG37.5 only TOP VIEW A 8.0 ± 0.2 [0.314 ± 0.008] <0.8 Max 52.4 [2.063] 6.0 ± 0.2 [0.236 ± 0.008] 22.8 [0.898] B 8.0 ± 0.2 [0.314 ± 0.008] 6.4 [0.252] 7.9 ± 0.3 5.0 Pitch [0.197] [0.311 ± 0.012] Packaging Dimensions For 'LTR' Option Code Axial Lead Items <1.2 Max. Lead Bend 254.0 - 356.0 [10.0 - 14.0] <0.8 Max 52.4 [2.063] 80.0 [3.15] Direction of Feed 22.8 [0.898] 6.4 [0.252] 5.0 Pitch [0.197] 254.0 - 356.0 [10.0 - 14.0] 80.0 [3.15] AC and CG3 Series Direction of Feed 16 Revised: January 21, 2011 ©2010 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.