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Effects of reactor radiation on 4.7-volt silicon voltage-regulator diodes

S. Weinstein

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Abstract

Twenty-five silicon voltage-regulator (Zener) diodes (SlN2985B) were exposed to reactor radiation to a totaJ fast-neutron fluence of 8. 2xl0 13 neutrons per square centimeter and a gamma dose <;>f 6. 3xlO 7 rads carbon.The Zener voltage remained essentially constant and the breakdoWn knee was somewhat softened.The forward and reverseleakage currents increased, and the forward voltage drop at high forward currents increased.The junction capacitance remained unchanged.

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Twenty-five silicon voltage-regulator (Zener) diodes (SlN2985B) were exposed to reactor radiation to a totaJ fast-neutron fluence of 8. 2xl0 13 neutrons per square centimeter and a gamma dose <;>f 6. 3xlO 7 rads carbon.The Zener voltage remained essentially constant and the breakdoWn knee was somewhat softened.The forward and reverseleakage currents increased, and the forward voltage drop at high forward currents increased.The junction capacitance remained unchanged.

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Available abstract

Twenty-five silicon voltage-regulator (Zener) diodes (SlN2985B) were exposed to reactor radiation to a totaJ fast-neutron fluence of 8. 2xl0 13 neutrons per square centimeter and a gamma dose <;>f 6. 3xlO 7 rads carbon.The Zener voltage remained essentially constant and the breakdoWn knee was somewhat softened.The forward and reverseleakage currents increased, and the forward voltage drop at high forward currents increased.The junction capacitance remained unchanged.

Key concepts: Volt, Regulator, Diode, Voltage regulator, Radiation, Voltage, Optoelectronics, Materials science

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