MMSZ5253B

Surface Mount Zener Diodes Features: *500mw Power Dissipation *Ideal for Surface Mountted Application *Zener Breakdown Voltage Range 2.4V to 110V Mechanical Data: *Case : SOD-123 Molded plastic *Terminals: Solderable per MIL-STD-202, Method 208 *Polarity: Cathode Indicated by Polarity Band *Marking: Marking Code (See Table on Page 3) *Weigh: 0.01grams(approx) SOD-123 Outline Dimensions MMSZ5221B Series SMALL SIGNAL ZENER DIODES 500m WATTS 1 2 SOD-123 Unit:mm SOD-123 Dim Min Max A 2.55 2.85 B 1.40 1.80 C 0.95 1.35 D 0.50 0.70 E 0.30 REF H - 0.10 J - 0.15 K 3.55 3.85 PIN 1. CATHODE 2. ANODE WEITRON http://www.weitron.com.tw MMSZ5221B Series WEITRON Maximum Ratings and Electrical Characteristics (TA=25 C Unless Otherwise Noted) Characteristics Symbol Value Unit Total Power Dissipation on FR-5 Board (1) @TL =75 C Thermal Resistance Junction to Ambient Air(2) PD R JA 500 340 mW C/W Forward Voltage @ IF=10mA Junction and Storage Temperature Range VF Tj,TSTG 0.9 -65 to+150 V C - - NOTES:1. FR-5=3.5 1.5inches, using the on minimum recommedned footprint. 2.Thermal Resistance measurement obtained via infrared scan method. ELECTRICAL CHARACTERISTICS (TA = 25 C unles s otherwis e noted, V F = 0.9 V Max. @ IF = 10 mA) Symbol Parameter V Z R evers e Zener Voltage @ IZT IZT R evers e C urrent ZZT Maximum Zener Impedance @ IZT IR R evers e Leakage C urrent @ VR V R R evers e Voltage IF F orward C urrent V F F orward Voltage @ IF Izk R evers e C ur...