solid state devices, inc. 14701 firestone blvd * la mirada, ca 90638 phone: (562) 404-4474 * fax: (562) 404-1773 ssdi@ssdi-power.com * www.ssdi-power.com designer?s data sheet features: ? hermetically sealed in glass ? axial lead rated at 250 mw ? surface mount rated at 400 mw ? available in axial (__), ro und tab surface mount (sm) and square tab surface mount (sms) versions ? available to tx, txv, and space levels 5 / ? available in 10% and 5% to lerances. for other voltage tolerances, contact factory. note: all specifications are subject to change without notification. scd's for these devices should be re viewed by ssdi prior to release. maximum ratings symbol value units nominal zener voltage v z 2.4 - 43 v zener current axial sm, sms i zm 5.5 - 95 8.25 ? 142.5 ma continuous power axial sm, sms p d 250 400 mw operating and storage temp. top, tstg -65 to +175 oc thermal resistance, junction to lead, l=3/8? (for axial) junction to end cap (for sm, sms) junction to ambient (for all) r jl r je r ja 500 300 600 oc/w part number/ordering information 4 / sz25 __ __ __ __ screening 5 / __ = not screened tx = tx level txv = txv s = s level (for sm, use ?s) package type 3 / __ = axial leaded sm = surface mount round tab sms = surface mount square tab voltage/family 2.4 thru 43 = 2.4v thru 43v, see table on page 2 voltage tolerance a = 10% voltage tolerance b = 5% voltage tolerance sz25a2.4 thru sz25a43 250mw and 400mw 2.4 ? 43 volts zener diodes dim min. max a .060? .090? b .120? .200? c 1.00? --- d .018? .022? axial (__) all dimensions are prior to soldering dim min. max. a .057? .067? b .130? .146? c .010? .022? d body to tab clearance: .001? round tab (sm) all dimensions are prior to soldering dim min. max. a .070? .078? b .175? .210? c .023? .027? d body to tab clearance: .001? square tab (sms) all dimensions are prior to soldering data sheet #: z00001l doc
notes: 1/ all zener voltages are measured with an automated test set using a 35 msec test time. longer or shorter test time will have a corresponding effect on the measured value due to heating effects. 2/ zener impedance is derived from the ac voltage divided by the ac current with rm s value of 10% of dc zener test current s uperimposed on the test current. 3/ ssdi standard marking consists of a contrasting color cathode dot or band. part number information is included on pack aging labels. 4/ for ordering information, price, op erating curves, and availability- contact factory. 5/ screening based on mil-prf-1 9500. screening flows available on request. 6/ suffix ?sm? for round tab surface mount and ?sms? for square tab surface mount. solid state devices, inc. 14701 firestone blvd * la mirada, ca 90638 phone: (562) 404-4474 * fax: (562) 404-1773 ssdi@ssdi-power.com * www.ssdi-power.com sz25a2.4 thru sz25a43 electrical characteristics @ 25c (unless oth erwise specified) part number 6 / nominal zener voltage (note 1) zener test current maximum zener impedance (note 2) maximum reverse leakage current maximum continuous current axial (l) surface mount (sm) and (sms) voltage tolerance vz @ izt izt zz @ izt ir @ vr vr 10% (a suffix) vr 5% (b suffix) izm izm 10% 5% volts ma ohms a volts volts ma ma sz25a2.4 sz25a2.7 sz25a3.0 sz25a3.3 sz25a3.6 sz25b2.4 sz25b2.7 sz25b3.0 sz25b3.3 sz25b3.6 2.4 2.7 3.0 3.3 3.6 10 10 10 10 10 30 30 30 28 24 100 75 50 25 15 0.95 0.95 0.95 0.95 0.95 1.0 1.0 1.0 1.0 1.0 95 90 85 80 75 142.5 135.0 127.5 120.0 112.5 sz25a3.9 sz25a4.3 sz25a4.7 sz25a5.1 sz25a5.6 sz25b3.9 sz25b4.3 sz25b4.7 sz25b5.1 sz25b5.6 3.9 4.3 4.7 5.1 5.6 10 10 10 10 5 23 22 20 18 14 10 5 5 5 5 0.95 0.95 1.9 1.9 2.9 1.0 1.0 2.0 2.0 3.0 70 65 60 55 50 105.0 97.5 90.0 82.5 75.0 sz25a6.2 sz25a6.8 sz25a7.5 sz25a8.2 sz25a8.7 sz25b6.2 sz25b6.8 sz25b7.5 sz25b8.2 sz25b8.7 6.2 6.8 7.5 8.2 8.7 5 5 5 5 5 10 8 10 12 14 5 3 3 3 3 3.8 4.8 5.7 6.2 6.2 4.0 5.0 6.0 6.5 6.5 45 35 31.8 29.0 27.4 67.5 52.5 47.7 43.5 41.1 sz25a9.1 sz25a10 sz25a11 sz25a12 sz25a13 sz25b9.1 sz25 b 10 sz25b11 sz25b12 sz25b13 9.1 10 11 12 13 5 5 5 5 5 16 18 24 32 36 3 3 2 1 0.5 6.7 7.6 8.0 8.7 9.4 7.0 8.0 8.4 9.1 9.9 26.2 24.8 21.6 20.4 19.0 39.3 37.2 32.4 30.6 28.5 sz25a14 sz25a15 sz25a16 sz25a17 sz25a18 sz25b14 sz25b15 sz25b16 sz25b17 sz25b18 14 15 16 17 18 5 2 2 2 2 40 126 128 130 132 0.1 0.1 0.1 0.1 0.1 9.5 10.5 11.4 12.4 13.3 10.0 11.0 12.0 13.0 14.0 17.5 16.3 15.4 14.5 13.2 26.25 24.45 23.10 21.75 19.80 sz25a19 sz25a20 sz25a22 sz25a24 sz25a25 sz25b19 sz25b20 sz25b22 sz25b24 sz25b25 19 20 22 24 25 2 2 2 2 2 134 136 138 140 142 0.1 0.1 0.1 0.1 0.1 13.3 14.3 16.2 17.1 18.1 14.0 15.0 17.0 18.0 19.0 12.5 11.9 10.8 9.9 9.5 18.75 17.85 16.20 14.85 14.25 sz25a27 sz25a28 sz25a30 sz25a33 sz25a36 sz25b27 sz25b28 sz25b30 sz25b33 sz25b36 27 28 30 33 36 2 2 2 2 2 144 146 150 155 160 0.1 0.1 0.1 0.1 0.1 20.0 20.0 22.0 24.0 26.0 21.0 21.0 23.0 25.0 27.0 8.8 8.5 7.9 7.2 6.6 13.20 12.75 11.85 10.80 9.90 sz25a39 sz25a43 sz25b39 sz25b43 39 43 2 2 165 170 0.1 0.1 29.0 31.0 30.0 33.0 6.1 5.5 9.15 8.25 note: all specifications are subject to change without notification. scd's for these devices should be re viewed by ssdi prior to release. data sheet #: z00001l doc
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