(1) 6-32 tapped hole in non-tubulated end.
(2) Identical tubulation on both ends.
(3) The voltage level at which the spark discharge occurs when a unipolarity pulse train is applied to the gap. Typically, the pulse repetition rate is 400 pps
(pulses/second) with a rise time of 0.3 µs and a pulse width of 0.5 µs. The “initial” range specifies at what increasing voltage the gap begins to fire and
the “rep” range specifies at what decreasing voltage the gap ceases to fire repetitively.
(4) Pulse repetition rate is 1500pps instead of the standard 400pps.
(5) Though outlines 2, 3, and 3A are identical, the electrode materials and configurations vary internally.
(6) Though outlines 4 and 4A are identical, gaps with outline 4A have heavier internal construction to withstand more severe shock and vibration.
Initial Repetitive
DC Breakdown Pulse Pulse
Part Voltage Breakdown Breakdown Package Dimension A Dimension B Dimension C
Number (kV ± 10%) Voltage (kV)(3) Voltage (kV)(3) Outline (Inches) (Inches) (Inches)
TG61 0.75 - - 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG62 1.00 - - 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG63 1.25 - - 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG64 1.50 - - 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG65 2.00 - - 5 0.770 ± .062 0.310 ± .020 0.520 ± .022
TG66 2.50 - - 5 0.790 ± .062 0.310 ± .020 0.540 ± .022
TG67 3.00 - - 5 0.790 ± .062 0.310 ± .020 0.540 ± .022
TG68 4.00 - - 5 0.820 ± .062 0.340 ± .020 0.570 ± .022
TG69 5.00 - - 5 0.820 ± .062 0.340 ± .020 0.570 ± .022
TG70 6.00 - - 5 0.820 ± .062 0.340 ± .020 0.570 ± .022
TG71 8.00 - - 5 0.860 ± .062 0.380 ± .020 0.610 ± .022
TG72 10.00 - - 5 0.860 ± .062 0.380 ± .020 0.610 ± .022
TG73 12.50 - - 5 0.965 ± .062 0.490 ± .020 0.715 ± .022
TG74 15.00 - - 5 0.965 ± .062 0.490 ± .020 0.715 ± .022
TG75 17.50 - - 5 0.965 ± .062 0.490 ± .020 0.715 ± .022
TG76 0.40 ± 0.05 - - 1 0.600 ± .030 0.494 ± .031 0.250 max
TG77 - 9.0 - 11.5 9.0 - 11.5 special - - -
TG78 1.00 - - 1A 0.620 max 0.425 ± .031 -
TG79 2.50 - - 2 - - -
TG82 15.00 15.0 - 19.0 13.0 - 18.0 7A 0.950 ± .050 - -
TG83 16.50 16.0 - 22.0(4) 16.0 - 22.0(4) 2---
TG84 30.00 31.0 - 43.0(4) 31.0 - 43.0(4) 4 4.000 ± .188 - -
TG85 15.00 9.0 - 11.5 9.0 - 11.5 special - - -
TG86 0.60 - - 1A 0.620 max 0.537 ± .031 -
TG87 0.80 - - 1A 0.620 max 0.537 ± .031 -
TG89(2) 2.90 - - 1 0.620 max 0.460 ± .031 0.188 max
TG90 20.00 17.0 - 24.0 - special - - -
TG98 0.345 ± .045 - - 3A - - -
TG99 2.75 ± 0.25 - - 2 - - -
TG100 38.00 - - 4 4.000 ± .188 0.440 ± .031 0.188 max
TG102 1.25 - - 1A 0.620 max 0.440 ± .031 0.188 max
TG103 1.50 - - 1A 0.620 max 0.445 ± .031 0.188 max
TG104 2.00 - - 1A 0.620 max 0.445 ± .031 0.188 max
TG105 2.50 - - 1A 0.620 max 0.445 ± .031 0.188 max
TG106 3.00 - - 1A 0.620 max 0.487 ± .031 0.188 max
TG107 3.50 - - 1A 0.620 max 0.487 ± .031 0.188 max
TG108 4.00 - - 1A 0.620 max 0.487 ± .031 0.188 max
TG109 5.00 - - 1A 0.620 max 0.487 ± .031 0.188 max
TG110 0.40 - - 1A 0.620 max - -
TG112 2.20 ± 0.10 - - 1 0.620 max 0.455 ± .031 0.275 ± .075
TG115 13.00 ± 1.00 - - 3 - - -
TG116(6) 25.00 - - 4A 3.750 ± .125 - -
TG117 21.00 17.0 - 24.0 - 7 2.000 ± .125 - -
TG118 21.50 16.0 - 22.0 - 5 0.965 ± .062 0.490 ± .020 0.715 ± .022
TG119 45.00 - - 4 4.250 ± .188 - -
TG120 8.00 7.4 - 8.7 - 5 0.860 ± .062 0.380 ± .020 0.610 ± .022
TG Two Electrode Legacy Series
www.highenergydevices.com 3 of 6
Specifications (@250C)