Deep cut on the capacitor caseing

[mowhoong]

I noticed some capacitor with deep cut on top of the aluminium case,I
can't figure out why ? the cutting on the aluminium will only weaken
the aluminium material,it make no sense. Does any person know the
reason ?

 

[Noozer]

I noticed some capacitor with deep cut on top of the aluminium case,I
can't figure out why ? the cutting on the aluminium will only weaken
the aluminium material,it make no sense. Does any person know the
reason ?

When they fail then tend to pop open. This gives a controlled location for
the capacitor to pop.

 

[CFoley1064]

Subject: Deep cut on the capacitor caseing

From: [email protected] (mowhoong)
Date: 8/21/2004 9:30 AM Central Daylight Time
Message-id: <[email protected]>

I noticed some capacitor with deep cut on top of the aluminium case,I
can't figure out why ? the cutting on the aluminium will only weaken
the aluminium material,it make no sense. Does any person know the
reason ?

The capacitor body split, due to overvoltage, overheating, or old age. Many
radial electrolytics have the top of the can scored to allow release in a
visible location.

Replace the cap, it's dead.

Good luck
Chris