dated : 04/09/2008 ? semtech electronics ltd. ( subsidiary of sino-tech internati onal holdings limited, a company listed on the hong kong stock exchange, stock code: 724 ) zmu100...zmu180 silicon planar power zener diodes for use in stabilizing and clipping circuits with high power rating. the zener voltages are graded according to the international e 12 standard. smaller voltage tolerances are upon request. absolute maximum ratings (t a = 25 o c) parameter symbol value unit power dissipation p tot 1 1) w junction temperature t j 175 o c storage temperature range t s - 55 to + 175 o c 1) valid provided that electrodes ar e kept at ambient temperature. characteristics at t amb = 25 o c parameter symbol max. unit thermal resistance junction to ambient air r tha 170 1) k/w 1) valid provided that electrodes ar e kept at ambient temperature. characteristics at t amb = 25 o c zener voltage 2) maximum dynamic resistance maximum reverse leakage current admissible zener current 1) type v z (v) at i zt (ma) z zt ( ? ) at i zt (ma) i r (a) at v r (v) i z (ma) zmu100 88...110 5 300 5 0.5 75 7 ZMU120 107...134 5 330 5 0.5 90 6 zmu150 130...165 5 360 5 0.5 112 5 zmu180 160...200 5 380 5 0.5 134 4 1) valid provided that electrodes ar e kept at ambient temperature. 2) tested with pulses tp = 20 ms ll-41
dated : 04/09/2008 ? semtech electronics ltd. ( subsidiary of sino-tech internati onal holdings limited, a company listed on the hong kong stock exchange, stock code: 724 ) admissible power dissipation versus ambient temperature valid provided that electrodes are kept at ambient temperature. zmu... 1.0 0.8 0.6 0.4 0.2 0 0100 200 c t amb p tot w o zmu... pulse thermal resistance versus pulse duration valid provided that electrodes are kept at ambient temperature. r thu 1 10 10 10 t p 5 4 3 2 3 2 -2 10 -5 -4 -3 10 10 10 -1 10 1 10 s t p t p p i t t v= 0.5 0.2 0.1 0.05 0.02 0.01 v=0 k/w zmu 120 0 0 2 6 4 8 iz 50 vz 150 200 100 v zmu 180 breakdown characteristics t j = constant (pulsed) ma 10 tj=25 c o zmu 100 zmu 150 zmu... 250 5 4 3 2 5 4 3 2 zmu100...zmu180 ambient temperature: ta ( c) o 0 25 100 150 0 0.2 0.4 0.6 power dissipation: ptot (w) 0.8 1.0 200 admissible power dissipation versus ambient temperature valid provided that electrodes are kept at ambient temperature.
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