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1N5270B BK is listed in the Single Zener Diodes range at ChipApex. The manufacturer field lists Central Semiconductor Corp. Its product description is DIODE ZENER 91V 500MW DO35. Review the specifications below when checking this part for your BOM.
The Central Semiconductor Corp 1N5270B BK is a silicon Zener diode with a nominal voltage of 91 V and ±5% tolerance. It operates in the DO-35 axial through-hole package, dissipating up to 500 mW at 75°C lead temperature. The device functions within a junction temperature range of -65°C to +200°C. Electrical characteristics include a maximum impedance of 400 Ω at 1.4 mA test current, a reverse leakage current of 0.1 μA at 69 V, and a positive temperature coefficient of +0.099 %/°C.
Verify End-of-Life status before procurement. Confirm availability of last-time buy inventory or alternative sourcing channels as no direct replacements are listed by the manufacturer. Ensure ordering suffixes match required plating specifications.
Select this component for high-voltage regulation tasks requiring precise tolerance. Evaluate thermal management requirements given the 500 mW dissipation limit. Consider the positive temperature coefficient when designing circuits sensitive to ambient temperature fluctuations.
This part belongs to the 1N5221B through 1N5278B series of silicon Zener diodes manufactured by Central Semiconductor Corp. The series covers a wide voltage range from 2.4 V to 170 V with standardized 500 mW power ratings and DO-35 packaging.
No public confirmed substitute part numbers are available for this component. The manufacturer lists N/A for all replacement options.
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