Positive ceramic semiconductor device

Details Positive ceramic semiconductor device Positive ceramic semiconductor device

1987-02-27

1989-05-16

James, Andrew J.

Electrical resistors

Incased, embedded, or housed

Element in insulation with outer metallic sheath

338309, 357 65, H01L 2354, H01L 2348

Patent

active

048314323

ABSTRACT:
A positive ceramic semiconductor device having positive temperature coefficient of resistance comprises a pair of electrodes provided on a ceramic semiconductor substrate. One of the paired electrodes which is to serve as the positive pole is basically constituted by at least an electrically conductive layer of silver-palladium series containing silver and palladium at a predetermined ratio. For preventing a localized current concentration from occurring in the current conducting state, improvement is made as the structure of the positive pole electrode ormed of the electrically conductive material of silver-palladium series and/or the structure of the negative pole electrode. Silver-migration phenomenon on the positive ceramic semiconductor substrate as well as degradation of the mechanical strength thereof is positively prevented.

REFERENCES:
patent: 3588636 (1971-06-01), Giesfeldt
patent: 3987217 (1976-10-01), Greeson et al.
patent: 4316171 (1982-02-01), Miyabayashi et al.
patent: 4380528 (1983-04-01), Shevakin et al.
patent: 4411863 (1983-10-01), Otsuka et al.
patent: 4458294 (1984-07-01), Womack
patent: 4579787 (1986-04-01), Heidsiek et al.
patent: 4663189 (1987-05-01), Borland

Affiliated with

Also associated with

Rating

Positive ceramic semiconductor device does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Positive ceramic semiconductor device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positive ceramic semiconductor device will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2327230