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DL4758A Datasheet(PDF) 1 Page - DAESAN ELECTRONIC CORP. |
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DL4758A Datasheet(HTML) 1 Page - DAESAN ELECTRONIC CORP. |
1 / 3 page DL4728A THRU DL4764A 1W SURFACE MOUNT ZENER DIODES Features Mechanical Data · 1.0W Power Dissipation · 3.9V - 100V Nominal Zener Voltages · Standard VZ Tolerance is 5% · Case : MELF(DO-41) glass · Terminals : Solderable per MIL-STD-202, method 208 · Polarity : Cathode band · Approx. Weight : 0.25 grams Absolute Maximum Ratings (Limiting Values) (TA=25℃) Symbols Value Units Zener current see table "Characteristics" Power dissipation at TA=25℃ (Note 1) W V K/W mA 1 Thermal resistance - Junction to ambient air (Note 1) 1.2 -65 to +200 Forward voltage at IF=200 mA Operating & storage temperature range Notes : (1) Valid provided that electrodes of the case ard kept at ambient temperature. (2) Measured under thermal equilibrium and DC (IZT) test conditions. (3) The Zener impedance is derived from the 60Hz AC voltage which results when an AC current having an RMS value equal to 10% of the Zener current (IZT or IZK) is superimposed on IZT or IZK. Zener impedance is measured at two points to insure a sharp knee on the breakdown curve and to eliminate unstable units. ℃ Pd VF Iz Pd/Vz TJ, 170 TSTG RθJA Dimensions in inches and (millimeters) MELF (DO-41) 0.205(5.20) 0.190(4.80) 0.024(0.60) 0.018(0.46) SOLDERABLE ENDS 0.105(2.70) 0.095(2.40) |
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