1N5521A

IN5518A,B thru IN5546A,B ® MOTOROI.A LOW VOLTAGE AVALANCHE SILICON OXIDE PASSIVATED ZENER REGULATOR DIODES Highly reliable silicon regulators utilizing an oxide-passivated junction for long-term voltage stability. Double slug construction provides a rugged. glass-enclosed. hermetically sealed structure. Low Zener Noise Specified Low Maximum Regulation Factor Low Zener Impedance Low Leakage Current Controlled Forward Characteristics Temperature Range: -65 to + 2000 C I I MAXIMUMRATINGS Rating DC Power Dissipation @TA =5o"C Derate above 5o"C DC Power Dissipation @TL =5o"C Lead Length = 118" Derate above 5o"C IFigure 1I Operating and Storage Junction Temperature Range Symbol Po Po TJ,Tstg Value 400 3.2 500 3.3 -65 to +200 Unit mW mW/oC mW mWJOC °c MECHANICAL CHARACTERISTICS CASE: l:Iermetically sealed. all'glass DIMENSIONS: See outline drawing. FINISH: Allexternel surfaces ere corrosion rasistantand leads are readily solderable and weldable. POLARITY: cathode indicatad by polarity band. WEIGHT: 0.2 Gram lapproxl MOUNTING POSITION: Any FIGURE 1 - POWER-TEMPERATURE DERATING CURVE g O.S " k"~ z '-...0 0.6 Lo l)S" ~ LE~ r--L=LJAD GTH TO HEATSINK iii Q .................. 3JS" '~" 0.4 . ---- "~ r-..J'--. ... """'- ::----,"x. 0.2 . ":::::::" 1.0........... .......... r-....... r--. ~ ~ o ~~ o 20 40 60 SO 100 120 140 160 ISO 200 TL, LEAD TEMPERATURE IDCI LOW VOLTAGE AVALANCHE ZENER DIODES 400 MILLIWATTS 3.3 THRU 33 VOLTS -I8s 1- ~~~ 9-~ rt--~ ...