1N5254B Datasheet

Silicon Zener Diodes


Features, Applications


Silicon Planar Power Zener Diodes. Standard Zener voltage tolerance 5 % with a "B" suffix. 2 % available upon request. These diodes are also available in MiniMELF case with the type designationTZM5221...TZM5267, SOT-23 case with the type designation MMBZ5225...MMBZ5267 and SOD-123 case with the types designation MMSZ5225... MMSZ5267


Tamb = 25 �C, unless otherwise specified Parameter Power dissipation Z-current Junction temperature Storage temperature range Test condition 75 �C Symbol IZ Tj Tstg Value 500 PV/VZ + 200 Unit mA �C

Tamb = 25 �C, unless otherwise specified Parameter Junction ambient Test condition mm (3/8 TL=constant Symbol RthJA Value 300 Unit K/W

Tamb = 25 �C, unless otherwise specified Parameter Forward voltage Test condition 200 mA Symbol VF Min Typ. Max 1.1 Unit V

Test Current Maximum Dynamic Impedance1) IZT 1.8 1.7 ZZT @ IZT 230 270 Maximum Dynamic Impedance ZZK @ IZK 1600 1700 Typical Temperature of Coeffizient @ IZT (%/K) +0.097 +0.098 Maximum Reverse Leakage Current 52 56

Based on dc-measurement at thermal equilibrium; lead length 9.5 (3/8 thermal resistance of heat sink = 30 K/W

Typical Characteristics (Tamb 25 �C unless otherwise specified)
Figure 3. Typical Change of Working Voltage vs. Junction Temperature
Figure 2. Typical Change of Working Voltage under Operating Conditions at Tamb=25�C
Figure 4. Total Power Dissipation vs. Ambient Temperature



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