Surge Arrester 3-Electrode-Arrester T90-A350XF Ordering code: B88069X3740C253 DC spark-over voltage 1) 2) 4) 350 ± 20 V % < 850 < 750 V V < 1000 < 850 V V Nominal impulse discharge current (wave 8/20 µs) 5) 5 kA Nominal alternating discharge current (50 Hz, 1 s) 5) 5 A Insulation resistance at 100 Vdc 4) >1 GΩ Capacitance at 1 MHz 4) < 1.5 pF Transverse delay time 3) < 0.2 µs Arc voltage at 1 A Glow to arc transition current Glow voltage ~ 10 ~1 ~ 60 V A V Weight ~ 0.8 g Storage temperature -40 ... +90 °C Climatic category (IEC 60068-1) 40/ 90/ 21 Impulse spark-over voltage 4) at 100 V/µs - for 99 % of measured values - typical values of distribution at 1 kV/µs - for 99 % of measured values - typical values of distribution Marking, blue 350 YY O 350 YY O - Nominal voltage - Year of production - Non radioactive 1) At delivery AQL 0.65 level II, DIN ISO 2859 In ionized mode 3) Test according to ITU-T Rec. K.12 4) Tip or ring electrode to center electrode 5) Total current through center electrode, half value through tip respectively ring electrode. Terms in accordance with ITU-T Rec. K.12 and DIN 57845/VDE0845 2) The arrester failsafe mechanism contains a insulating foil with a melting temperature of 260 °C. Arrester fail safe works at temperatures > 260 °C. The arrester has to be fixed mechanically, if the arrester is contacted by soldering and if the solder temperature is less than 260 °C. KB AB E / KB AB PM Issue 03, 21.07.2004 Page 1 of 2 Surge Arrester 3-Electrode-Arrester T90-A350XF Ordering code: B88069X3740C253 Not to scale Dimensions in mm Non controlled document EPCOS AG 2002. Reproduction, publication and dissemination of this data sheet, enclosures hereto and the information contained therein without EPCOS' prior express consent is prohibited. Purchase orders are subject to the General Conditions for the Supply of Products and Services of the Electrical and Electronics Industry recommended by the ZVEI (German Electrical and Electronic Manufacturers' Association), unless otherwise agreed. KB AB E / KB AB PM Issue 03, 21.07.2004 Page 2 of 2