vishay ztk series document number 85812 rev. 1.3, 27-nov-03 vishay semiconductors www.vishay.com 1 94 9367 voltage stabilizers features ? temperature-compensated stabilizing circuits monolithic linear integrated circuits with extremely short thermal run-in time producing a constant temperature-compensated voltage. they are par- ticularly suitable for stabilizing the tuning voltage in radio and tv tuners employing voltagevariable capacitance diodes. mechanical data case: do-35 glass case weight: approx. 0.13 g packaging codes/options: tr/ 10k per 13 " reel (52 mm tape), 30 k/box tap/ 10k per ammo tape, (52 mm tape), 30 k/box absolute maximum ratings t amb = 25 c, unless otherwise specified thermal characteristics t amb = 25 c, unless otherwise specified 1) valid provided that leads are kept at ambient temperature at a distance of 8 mm from case 2) at the end of this time ? v z has reached 90 % of its final value ? v z max. ? v z max = v z (a) - v z (0), where v z (0) = v z in the instant of turn-on and v z (a) = v z at thermal equilibrium parameter test condition symbol value unit operating current (see table "characteristics") junction temperature t j 150 c storage temperature range t s - 20 to + 150 c parameter test condition symbol min ty p. value unit temperature coefficient of the operating voltage i z = 5 ma 0.5 in the range of t amb = 20 to 60 c vz - 10 - 2 + 5 1) 10 -5 /c thermal run-in-time t th - 20 2) s thermal resistance junction to ambient air t ja 400 c/w
www.vishay.com 2 document number 85812 rev. 1.3, 27-nov-03 vishay ztk series vishay semiconductors electrical characteristics 3) tested with pulses t p = 5 ms 4) valid provided that leads are kept at ambient temperature at a distance of 8 mm from case. typical characteristics (t amb = 25 c unless otherwise specified) partnumber operating voltage dynamic resistance permissable operating v z @ i z = 5 ma 3) r zj @ i z = 5 ma i z max @ t amb = 25 c 4 v w ? ztk6.8 6.4 to 7.1 10(<25) 36 ztk9 8 to 10 10(<25) 27 ztk11 10 to 12 10(<25) 1 ztk18 16 to 20 11(<25) 13 ztk22 20 to 24 11(<25) 1 ztk27 24 to 30 12(<25) 8 ztk33a 30 to 32 12(<25) 7 ztk33b 32 to 34 12(<25) 7 ztk33c 34 to 36 12(<25) 7 figure 1. time dependence figure 2. dynamic resistance versus operating current 18385 18386 figure 3. permissible operating current versus ambient temperature figure 4. change of temperature coefficient versus operating current 18387 c 18388
vishay ztk series document number 85812 rev. 1.3, 27-nov-03 vishay semiconductors www.vishay.com 3 package dimensions in mm (inches) cathode identification ? 1.7 (0.066) max. ? 0.55 (0.021) max. 3.9 (0.152) max. 26 (1.014) min. technical drawings according to din specifications 94 9366 standard glass case 54 a 2 din 41880 jedec do 35 26 (1.014) min.
www.vishay.com 4 document number 85812 rev. 1.3, 27-nov-03 vishay ztk series vishay semiconductors ozone depleting substances policy statement it is the policy of vishay semiconductor gmbh to 1. meet all present and future national and international statutory requirements. 2. regularly and continuously improve the performance of our products, processes, distribution and operatingsystems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. it is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances (odss). the montreal protocol (1987) and its london amendments (1990) intend to severely restrict the use of odss and forbid their use within the next ten years. various national and international initiatives are pressing for an earlier ban on these substances. vishay semiconductor gmbh has been able to use its policy of continuous improvements to eliminate the use of odss listed in the following documents. 1. annex a, b and list of transitional substances of the montreal protocol and the london amendments respectively 2. class i and ii ozone depleting substances in the clean air act amendments of 1990 by the environmental protection agency (epa) in the usa 3. council decision 88/540/eec and 91/690/eec annex a, b and c (transitional substances) respectively. vishay semiconductor gmbh can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. we reserve the right to make changes to improve technical design and may do so without further notice. parameters can vary in different applications. all operating parameters must be validated for each customer application by the customer. should the buyer use vishay semiconductors products for any unintended or unauthorized application, the buyer shall indemnify vishay semiconductors against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. vishay semiconductor gmbh, p.o.b. 3535, d-74025 heilbronn, germany telephone: 49 (0)7131 67 2831, fax number: 49 (0)7131 67 2423
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