CG2350LTR

**Gas Discharge Tubes** CG/CG2 Series 

~~|_|~~ ~~**RoHS** @ SAM~~ 

## 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. 

## ~~**Agency Approvals**~~ 

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AGENCY AGENCY FILE NUMBER<br>Wi E128662 [1]<br>Wi E320116 [2]<br>NOTES:<br>**----- End of picture text -----**<br>


1. Certified to UL 497B. 

2. Only CG2300, CG2470, CG2600, CG2800 and CG221000.  Certified to UL 1449. 

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. 

The CG Series (75V-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. 

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**~~ 

- RoHS and Lead-free • Meets REA PE-80 compliant • Available in surface 

- • Rugged Ceramic-Metal mount, and a variety of construction lead options options 

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Additional Information<br>= a<br>Datasheet Resources Samples<br>CG/CG2 CG/CG2 CG/CG2<br>**----- End of picture text -----**<br>


- Low Capacitance (<1.5pf) 

- ~~**Applications**~~ 

- ~~[Po~~ 

- Communication lines • Instrumentation circuits and equipment • Medical electronics 

   - Medical electronics 

- CATV equipment 

   - ADSL equipment 

- Test equipment 

   - Telecom SLIC protection 

- Data lines 

- Power supplies 

© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/06/15 

**Gas Discharge Tubes** CG/CG2 Series 

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## ~~**Electrical Characteristics**~~ 

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Device Specifications  (at 25°C) Life Ratings<br>DC Breakdown Impulse  Impulse  Insulation  Capaci- Arc  Surge  Nominal  Nominal  AC  DC Max<br>in Volts Break- Break- Resistance  tance  Voltage  Life  Impulse  AC  Dischage  Holdover Impulse<br>(@100V/s) down  down In  (@1MHz) (on state  (@500A  Discharge  Discharge  Current  Voltage [2] Discharge<br>in Volts Volts  Voltage)  Current  Current (9 cycle  Current<br>10/1000µs)<br>(@100V/µs) (@1 Kv/µsec) @1Amp  (8/20µs) (10x1sec @50Hz) (1 Application<br>Part  Min @50-60Hz) @ 10/350µs)<br>Number MIN TYP MAX MAX MIN MAX TYP TYP<br>CG75 60 75 90 400 650<br>CG90 72 90 108 400 600 10 [10]  Ω 52 V 4kA<br>CG90 SN 72 90 108 400 600 (at 50V)<br>CG110 88 110 132 450 600<br>CG2145 116 145 174 500 600 80 V<br>CG2145 SN 120 145 174 500 600<br>CG2230 [1] 195 230 265 600 700<br>CG2230 SN [1] 184 230 276 600 700<br>CG2250 213 250 288 625 725<br>10 shots<br>CG2250 SN 200 250 300 625 725 20 A<br>400 (@20kA) [3] 100 A<br>CG2300 255 300 345 700 800 1.5 pf 15 V<br>shots<br>CG2300 SN 240 300 360 700 800<br>10 [10]  Ω 2.5kA<br>CG2350 297 350 403 750 900 (at 100V)<br>CG2350 SN 280 350 420 750 900 135 V<br>CG2420 357 420 483 800 1000<br>CG2470 [1] 400 470 540 850 1200<br>CG2470 SN [1] 376 470 564 850 1200<br>CG2600 [1] 510 600 690 1000 1400<br>CG2600 SN [1] 480 600 720 1000 1400<br>CG2800 [1] 680 800 920 1200 1500 10 shots<br>10 A<br>CG21000 [1] 850 1000 1150 1500 1600 (@10kA) 65 A<br>**----- End of picture text -----**<br>


NOTES: 

1. Certified to UL 1449. 

2. Reference REA PE-80, 0.2A. Tested to ITU-T Rec K.12 and REA PE 80 < 150 mSec. 

3. 5 x [5 (+) or 5 (-)] applications 20kA 8/20µSec. (75 to 600 volt devices.) 

10 x [5 (+) and 5 (-)] applications 10kA 8/20µSec. (800 and 100 volt devices.) 

||~~**Product Characteristics**~~|~~**Product Characteristics**~~|||||
|---|---|---|---|---|---|---|
||||||||
||**Materials**|**LS, Axial:**<br>Device: Tin Plated 2–5 Microns<br>Lead Wires: Tin Plated 17.5 ± 12.5 Microns<br>Construction: Ceramic Insulator<br>**Core:**<br>Device: Tin Plated 17.5 ± 12.5 Microns.<br>Construction: Ceramic Insulator<br>**MS:**||**Glow to arc**<br>**transition current**<br>**Glow Voltage**<br>**Storage and**<br>**Operational**<br>**Temperature**|< 0.5Amps<br>60-160 Volts<br>-40 to +90||
|||Device: Dull Tin Plated 7–9 Microns<br>Construction: Ceramic Insulator||**Maximum Follow**<br>**On Current1**|230 Volts r.m.s, 200 Amps.<br>(800V and 1000V devices tested to UL1449 3rd edition)||
||||||||
||**Product Marking**|LF Logo, Voltage and date code; Black in<br>positive print|||||



© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/06/15 

**Gas Discharge Tubes** CG/CG2 Series 

## ~~**Device Dimensions** Lo~~ 

**Leaded 'L' Type Straight Axial Devices** 

**Leaded 'LS' Type Shaped Lead Devices** 

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PROFILE VIEW TOP VIEW PROFILE VIEW TOP VIEW<br>6.07 ± 0.3 8.10 Max.<br>[0.239 ± 0.012] [0.319 DIA Max.]<br>0.81 DIA. TYP.<br>[0.032]<br>8.10 DIA. MAX.<br>[0.319]<br>8.40 ± 0.3<br>[0.331 ± 0.012]<br>6] | A s ra<br>6.07 ± 0.15<br>[0.239 ± 0.006]<br>0.80<br>    0.004 8.4 ± 0.3 [0.032]<br>62 ± 2 2 Surfaces 0.40 ± 0.03 [0.331 ± 0.012]<br>9.85 ± 0.30 [0.0157 ± 0.0012]<br>[0.388 ± 0.012]<br>HF " |) aS<br>11.15 ± 0.30<br>P [0.439 ± 0.012] e p<br>SOLDER PAD LAYOUT<br>— 9.85 —<br>[0.388]<br>TOP VIEW PROFILE VIEW SEMI–PROFILE VIEW 8.60<br>[0.339]<br>[0.032 Max.] 8.10 Max. 6.07 ± 0.15<br>[0 .239 ± 0.0059]<br>5.89  [0.232] 1.80<br>[0.071]<br>a= = T 11.65 T<br>[0.459]<br>0.47 ± 0.1  'MS' Type Devices<br>[0.019 ± 0.0039]<br>8.10 Max.<br>**----- End of picture text -----**<br>


## **Core Devices** 

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TOP VIEW<br>8.30 ± 0.1 PROFILE VIEW SEMI–PROFILE VIEW<br>[0.327 ± 0.0039]<br>4 ± 0.2<br>[0.157 ± 0.0079] 5.58  [0.220]<br>R5.29  [R0.208] 6.05 ± 0.2<br>[0.238 ± 0.0079]<br>Ele<br>0.47 ± 0.1<br>OIL [0.019 ± 0.0039]<br>SOLDER PAD LAYOUT<br>2.29  [0.090]<br>8.71  [0.343]<br>i 5.89  [0.232]<br>[0.366 ± 0.0079] 9.30 ± 0.2<br>ø8.30±0.1<br>**----- End of picture text -----**<br>


© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/06/15 

**Gas Discharge Tubes** CG/CG2 Series 

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## ~~**Soldering Parameters - Refow Soldering (Surface Mount Devices)**~~ 

|Refow Condition<br>Pre Heat<br>- Temperature Min (Ts(min))<br>- Temperature Max (Ts(max))<br>- Time (Min to Max) (ts)<br>Average ramp up rate (Liquidus Temp<br>(TL) to peak|Refow Condition<br>Pre Heat<br>- Temperature Min (Ts(min))<br>- Temperature Max (Ts(max))<br>- Time (Min to Max) (ts)<br>Average ramp up rate (Liquidus Temp<br>(TL) to peak|Pb – Free assembly<br>150°C<br>200°C<br>60 – 180 secs<br>3°C/second max|
|---|---|---|
|TS(max)to TL|- Ramp-up Rate|5°C/second max|
|Refow|- Temperature (TL) (Liquidus)<br>- Temperature (tL)|217°C<br>60 – 150 seconds|
|Peak Temperature (TP)||260+0/-5°C|
|Time within 5°C of actual peak<br>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|



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t P<br>T P<br>Critical Zone<br>Ramp-up TL to TP<br>T S(max) T L t L<br>Ramp-down<br>Preheat<br>T S(min)<br>t S<br>25<br>time to peak temperature Time<br>(t 25ºC to peak)<br>Temperature<br>**----- End of picture text -----**<br>


## ~~**Soldering Parameters - Wave Soldering (Thru-Hole Devices)**~~ 

## **Recommended Process Parameters:** 

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300<br>280<br>260 Wave Parameter Lead-Free Recommendation<br>240 Preheat:<br>220 (Depends on Flux Activation Temperature) (Typical Industry Recommendation)<br>200<br>180     Temperature Minimum: 100° C<br>160     Temperature Maximum: 150° C<br>140     Preheat Time: 60-180 seconds<br>120<br>100 Solder Pot Temperature: 280° C Maximum<br>80<br>60 Solder Dwell Time: 2-5 seconds<br>40<br>20<br>0<br>Time (Seconds)<br>Preheat Time Cooling Time<br>Dwell Time<br>Temperature (°C) - Measured on bottom side of board 0 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190 200 210 220 230 240<br>**----- End of picture text -----**<br>


## ~~**Soldering Parameters - Hand Soldering**~~ 

Solder Iron Temperature:  350° C +/-  5°C Heating Time:  5 seconds max. 

© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/06/15 

**Gas Discharge Tubes** CG/CG2 Series 

## ~~**Packaging Dimensions** EEE~~ 

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For 'L' Type Axial Lead Items<br>“ ir <1.2 Max. Lead Bend<br>254.0 - 356.0<br>i [10.0 - 14.0]<br><0.8 Max<br>Direction of Feed<br>0.0<br>52.4 15]<br>[2.063]<br>22.8<br>[0.898]<br>6.4<br>[0.252]<br>—— 5.0 Pitch<br>[0.197]<br>Core and 'MS' Type Items<br>275.0<br>[10.83]<br>10x4 ± 0.1 = 40 ± 0.2 100.0<br>[10 x 0.157 ± 0.004 = 1.575 ± 0.008] [3.94]<br>1.75 ± 0.1<br>0.4 ± 0.05 [0.069 ± 0.004] 1.5 DIA. MAX. 4 ± 0.1 76.0<br>[0.016 ± 0.002] [0.059] [0.157 ± 0.004] [2.99] 25.0<br>[0.98]<br>T ee | {|<br>7.5 ± 0.1<br>8.5 ± 0.1 [0.295 ± 0.004]<br>[0.335 ± 0.004] 16 +0.3 / -0.1 17.7<br>[0.630 +0.012 / -0.004] [0.697]<br>Direction of Feed<br>1.5 DIA. MAX.<br>T 8.6 ± 0.1 t MeRGH [0.059] 12 ± 0.1  eH | S e,<br>[0.339 ± 0.004] [0.472 ± 0.004]<br>For 'LS' Type Shaped Lead Items<br>10x4 ± 0.1 = 40 ± 0.2<br>0.5 ± 0.05[0.020 ± 0.002] [0.069 ± 0.004]1.75 ± 0.1 1.5 DIA. MAX.[10x.157 ± 0.004 = 1.575 [0.059] [0.157 ± 0.004]± 0.008]4 ± 0.1 [[275.010.8276.02.99]] [100.03.93] 25.0[0.98]<br>1.9<br>[0.075] [0.453 ± 0.004]11.5 ± 0.1 [1.01]25.7 Direction of Feed<br>11.75 ± 0.1 8 ± 0.1 24 +0.3 / -0.1<br>[0.463 ± 0.004] [0.315 ± 0.004] [0.945 +0.019 / -0.004]<br>0.5 ± 0.01<br>[0.020 ± 0.004]<br>1.5 DIA. MAX.<br>9 ± 0.1 [0.059] 16 ± 0.1<br>[0.354 ± 0.004] [0.630 ± 0.004]<br>**----- End of picture text -----**<br>


© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/06/15 

**Gas Discharge Tubes** CG/CG2 Series 

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## ~~**Part Numbering System and Ordering Information**~~ 

## **CG2 XXX XX * XX** 

**Series Examples: CG** -- for 75, 90, or 110V **CG2** -- for 145V to 1000V **CG75** -- A non-leaded 75V device **Breakdown Voltage CG2230L** -- A leaded 230V device **75 300 CG2800LTR** -- A leaded 800V device, tape-and-reel  (per EIA standard RS-296-D) **90 350 110 470 145 600 Notes: 230 800 250 1000** CG/CG2 devices with other breakdown voltages in the 75-1000 V range are available upon request. 

## **Lead Option Code** 

(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 LS(Blank) = Shaped Lead (see LS dimensions), Tape & Reel - 500 per reel 

© 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 11/06/15