Tailoring of recovery charge in power diodes and thyristors by i

Details Tailoring of recovery charge in power diodes and thyristors by i Tailoring of recovery charge in power diodes and thyristors by i

1976-05-17

1978-02-21

Ozaki, George T.

Metal treatment

Compositions

Heat treating

148 335, 148187, H01L 21263

Patent

active

040750370

ABSTRACT:
The recovery charge of power diodes and thyristors is tailored and matched by irradiation through a major surface of the semiconductor body with a given radiation source, preferably of electron radiation, to a dosage corresponding to between about 1 .times. 10.sup.12 and 8 .times. 10.sup.12 electrons per centimeter square with 2 MeV electron radiation. Preferably, the recovery charge of each device of a group of a type of diode or thyristor is first measured, and the group divided into subgroups according to the measured recovery charge of each device. The devices of at least one subgroup is then irradiated with said given radiation source to dosages corresponding to between about 1 .times. 10.sup.12 and 8 .times. 10.sup.12 electrons per centimeter square with 2 MeV electron radiation, and the recovery charge of each irradiated device is again measured to determine the incremental change of recovery charge as a function of irradiation dosage. A recovery charge of another device of said type of diode or thyristor is then measured, and the device irradiated with said radiation source to a determined dosage corresponding to a desired incremental change in recovery charge to tailor the recovery charge of said device to a desired value.

REFERENCES:
patent: 3809582 (1974-05-01), Tarneja et al.
patent: 3933527 (1976-01-01), Tarneja et al.

Affiliated with

Also associated with

Rating

Tailoring of recovery charge in power diodes and thyristors by i does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tailoring of recovery charge in power diodes and thyristors by i, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tailoring of recovery charge in power diodes and thyristors by i will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-124185