dssv series (for ul1459) features part number system dimensions marking over voltage testing (ul 1459, csa-22.2 no.225-m90) and surge protection for telephone lines (telephone, modem, facsimile etc.) dssv 301 - series dc spark-over voltage (vs) the first two digits are significant, and the third is number of zeros. yd - shape l dc spark-over voltage tolerance l ? 15% m ? 20% yd 4 terminal 2 terminal t5 dssv-yd type unit:mm top view 9.0 ? 0.5 side view 1 42 3 bottom view 10.5 ? 0.5 4.0 ? 0.7 ? 0.1 0.5 ? 0.1 5.0 ? 0.5 part number trade mark lot no. dssv-301l-yd mmcc e5d 18.0 ? 0.5 12.5 ? 0.5 mmcc dssv-t5 type front view side view 10.0 ? 0.5 5.0 ? 0.5 12 ? 0.8 ? 0.1 0.5 ? 0.1 5.0 ? 0.5 19.5 ? 0.5 4.0 ? 0.5 color code 99 88 77 66 55 44 401m 33 301l 22 11 white gray purple blue green yellow orange red brown black 0 0 part number lot no. (ten ? s digit) lot no. (unit ? s digit) first color band second color band third color band characteristics 1):fcc(10/560)-100a ? 3 times, (10/160)-200a ? 3 times 2):doc 1 cycle 10/1000 sec. 1kv-12 times, 100/1000 sec. 1kv-12 times respectively. 3):ul standard ul 497a file no. e131010(n) series part number dssv DSSV-401M-t5 dssv-301l-t5 DSSV-401M-yd dssv-301l-yd - - ? ul 497a 3) ul recognized ? dc spark-over voltage vs insulation resistance ir electrostatic capacitance 1khz-6v max. c 400v(320~480) 300v(255~345) 100m ? min. 2pf max. surge life test doc 1cycle 2) 400v(320~480) 300v(255~345) dssv-201m-yd 200v(160~240) dc 250v dc 100v dc 250v dc 100v 300a 400a fcc cycle 1) surge current capacity 8/20 sec.
dssv series - characteristics surge absorption characteristics overvoltage cut off properties of dssv type original waveform fcc 10/560 sec. 800v 10 sec./div 200v/div. 200v/div. 10 sec./div 10 sec./div. 200v/div. 200v/div. 10 sec./div. doc 10/1000 sec. 1000v absorption waveform dss ? 301l, dssv ? 301l ? yd, dssv ? 301l ? t5 fcc 10/560 sec. 800v dss ? 401l, dssv ? 401m ? yd, dssv ? 401m ? t5 doc 10/1000 sec. 1000v 10 sec./div. 200v/div. 200v/div. 10 sec./div. varistor 270v varistor 390v part number applied conditions ignites (fail/pass) 0/100 fuse opens 15~35m sec. ac600v ? 40a ? 1.50sec. ignites (fail/pass) 0/100 fuse opens 0.3~0.8 sec. ac600v ? 7a ? 5sec. dssv ? 301l ? yd, dssv ? 401m ? yd, dssv ? 301l ? t5, dssv ? 401m ? t5 ignites (fail/pass) 0/100 fuse opens 1~20 sec. ac600v ? 2.2a ? 30min. such overvoltage testing is required in safety standards for telephone, ul1459 and csa ? c22.2 no.225 ? m90. the dssv is effective in protecting against these overvoltage conditions by opening the circuit.
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