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www.anova-semi.com Revision: B Mar-26-2012 P. 1 VZ: 3.3 to 330 V PD: 1 W Note: For use in stabilizing and clipping circuits with high power rating Axial Lead Zener Diodes Features DO-41 Glass passivated chip Low leakage Built-in strain relief Low inductance High peak reverse power dissipation Lead (Pb)-free component Polarity: Color band denotes cathode end Mechanical Data Case: Molded plastic Epoxy: UL 94V-0 rate flame retardant Lead: Axial leads,Solderable per MIL- STD-202, method 208 guranteed Mounting position: Any Maximum Ratings(TA=25℃ unless otherwise noted) Parameter Symbol Value Unit DC power dissipation at TL = 75 °C(1) PD 1 W Maximum forward voltage at IF = 200 mA VF 1.2 V (2) Valid provided that leads are kept at ambient temperature at a distance of 10 mm from case Maximum thermal resistance junction to ambient air(2) RӨJA 170 °C/W Junction temperature range TJ - 55 to + 175 °C Storage temperature range TSTG - 55 to + 175 °C (1) TL = Lead temperature at 3/8 " (9.5mm) from body 0.033 0.028 [ 0.84 0.71 0.117 0.090 [ 2.97 2.29 MIN MIN DIA. DIA. Dimensions : inch [ mm ] 0.205 0.165 [ 5.21 4.19] 1.000 [25.40] 1.000 [25.40]
www.anova-semi.com Revision: B Mar-26-2012 P. 2 Fig. 1 - Power Temperature Derating Curve Fig. 2 - Temperature Coefficients v.s. Zener Voltage Fig. 3 - Typical Thermal Resistance v.s. Lead Length Fg. 4 - Maximum Surge Power Ratings and Characteristics Curves (TA=25℃ unless otherwise noted) 100 125 150 175 Junction to Lead Thermal Resistance, ӨJL, (°C/W) Lead Length to Heatsink , L, (inches) 0.0 0.2 0.4 0.6 0.8 1.0 0 25 50 75 100 125 150 175 200 Maximum Power Dissipation, PD (W) Lead Temperature ,TL (℃) 100 10 100 Temperature Coefficient,ӨVz, (mV/°C) Zener Voltage, Vz, (V) Range 100 0.01 0.1 1 10 100 1000 Peak Surge Power, Ppk, (W) Pulse Width, PW, (s) 11V-91V Non-Repetitive 5% Duty Cycle 10% Duty Cycle 20% Duty Cycle Rectangular Waveform TJ=25°C Prior to Initial Pulse
www.anova-semi.com Revision: B Mar-26-2012 P. 3 Maximum DC Zener Current Maximum Surge Current VZ @ IZT IZT ZZT @ IZT ZZK @ IZK IZK IZM IRM (V) (mA) (Ω) (Ω) (mA) (μA) (V) (mA) (mApk) 1N4728A 3.3 76.0 10 400 1.00 100 1.0 274 1370 1N4729A 3.6 69.0 10 400 1.00 100 1.0 251 1255 Notes : on IZT per JEDEC method (1) The type number listed have a standard tolerance on the nominal zener voltage of ± 5 % (2) The revese surge current is a non-repetitive, 8.3ms pulse width square wave or equivalent sine-wave superimposed Electrical Characteristics(TA=25℃ unless otherwise noted) Part Number Nominal Zener Voltage Maximum Zener Impedance Maximum Reverse Leakage Current IR @ VR