1N3343A Datasheet, PDF (3/3 Pages) Microsemi Corporation – 50 WATT ZENER DIODES

SCOTTSDALE DIVISION
1N3305 thru 1N3350B
and 1N4549B thru 1N4556B
50 WATT ZENER DIODES
See further notes on following page
NOTES:
1. When using JEDEC numbers an R suffix should be used to signify reversed polarity. The suffixes A and B indicate tolerances
of 10% and 5% respectively. No suffix or just R denotes +/-20% tolerance. Example: 1N3319RB is a REVERSED polarity,
20 volt unit having a +/-5% tolerance on Zener Voltage.
2. Zener Voltage (V_Z) is measured with junction in thermal equilibrium with 30^oC stud temperature.
3. The Zener impedance is derived from the 60 cycle ac voltage, which results when an ac current having an rms value equal to
10% of the dc zener current (I_ZT or I_ZK) is superimposed on I_ZT or I_ZK. Zener impedance is measured at 2 points to ensure a
sharp knee on the breakdown curve and to eliminate unstable units. A curve showing the variation of zener impedance vs.
zener current for three representative types is shown in Figure 2. Also see Microsemi MicroNote 202.
OUTLINE AND CIRCUIT
Stud Temperature ^oC
FIGURE 1
Power Derating Curve
FIGURE 2
Typical Zener Impedance
vs. Zener Current
PACKAGE DIMENSIONS
All Dimensions in: INCH
mm
Copyright  2003
11-12-2003 REV A
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, [phone], Fax: [phone]
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