1N746A - 1N759A ZENER DIODES DO - 35 Glass (DO-204AH) VZ : 3.3 to 12V PD : 500mW FEATURES : 1.00 (25.4) min. 0.079(2.0 )max. • Silicon planar power zener diodes. • Standard zener voltage tolerance is ± 5% • Other tolerances are available upon request. • Pb / RoHS Free 0.150 (3.8) max. Cathode Mark MECHANICAL DATA : Case: DO-35 Glass Case Weight: approx. 0.13g 1.00 (25.4) min. 0.020 (0.52)max. Dimensions in inches and ( millimeters ) Maximum Ratings and Thermal Characteristics Rating at 25 °C ambient temperature unless otherwise specified. Parameter Symbol Value Unit VF 1.2 V Zener Current see Table "Characteristics" Maximum Forward Voltage at IF = 200 mA. Power Dissipation at TL = 75°C Thermal Resistance Junction to Ambient Air PD RθJA (1) mW (2) °C/W 500 300 Junction temperature TJ 175 °C Storage temperature range TS -65 to + 150 °C Notes: (1) TL is measured 3/8” from body. (2) Valid provided that leads at a distance of 3/8” from case are kept at ambient temperature. Page 1 of 2 Rev. 02 : March 25, 2005 ELECTRICAL CHARACTERISTICS Rating at 25 °C ambient temperature unless otherwise specified. Nominal Zener Voltage VZ @ IZT Test Current IZT 1N746A (V) 3.3 (mA) 20 Maximum Zener Impedance ZZT @ IZT (1) (Ω) 28 1N747A 3.6 20 24 10 30 100 1N748A 3.9 20 23 10 30 95 1N749A 4.3 20 22 2 30 85 1N750A 4.7 20 19 2 30 75 1N751A 5.1 20 17 1 20 70 1N752A 5.6 20 11 1 20 65 1N753A 6.2 20 7 0.1 20 60 1N754A 6.8 20 5 0.1 20 55 1N755A 7.5 20 6 0.1 20 50 1N756A 8.2 20 8 0.1 20 45 1N757A 9.1 20 10 0.1 20 40 1N758A 10 20 17 0.1 20 35 1N759A 12 20 30 0.1 20 30 Type Maximum Reverse Leakage Current (2) IR @ VR=1V Ta=25°C Ta=150°C (µA) (µA) 10 30 Maximum DC. Zener Current IZM (mA) 110 Notes : (1) The Zener impedance is derived from the 1 kHz AC voltage which results when an AC current having an RMS value equal to 10% of the Zener current (IZT) is superimposed on IZT. Zener impedance is measured at two points to insure a sharp knee on the breakdown curve and to eliminate unstable units. (2) Valid provided that leads at a distance of 3/8” from case are kept at ambient temperature. (3) The type number listed have a standard tolerance on the nominal zener voltage of ± 5.0%. Page 2 of 2 Rev. 02 : March 25, 2005