Is this a capacitor? - Badcaps

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stenio

Member

Join Date: Sep 2023

Posts: 10

Country: Italy
#1

Is this a capacitor?

10-01-2023, 01:30 PM

Hi,

I cannot find anything about this component:
E
BBW C446. Is it a capacitor?
I tried to measure it inline but got no reading.
Also, the logo seems to be ST, but I am not sure. I have attached a drawing of it.

Thanks,
Stenio
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stj

Great Sage 齊天大聖

Join Date: Dec 2009

Posts: 31288

Country: Albion
#2

10-01-2023, 02:02 PM

Re: Is this a capacitor?

st only make semiconductors.
maybe it's a transorb
Comment
R_J

Badcaps Legend

Join Date: Jun 2012

Posts: 9624

Country: Canada
#3

10-01-2023, 04:09 PM

Re: Is this a capacitor?

It is likely a SMBJ48CA
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smbj58ca.pdf (572.8 KB, 20 views)
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petehall347

Badcaps Legend

Join Date: Jan 2015

Posts: 4450

Country: United Kingdom
#4

10-01-2023, 04:19 PM

Re: Is this a capacitor?

tvs so very likely its good . they short if bad ,
Comment
stenio

Member

Join Date: Sep 2023

Posts: 10

Country: Italy
#5

10-01-2023, 11:25 PM

Re: Is this a capacitor?

Originally posted by R_J

It is likely a SMBJ48CA

I think you got it. Thanks.
Comment
stenio

Member

Join Date: Sep 2023

Posts: 10

Country: Italy
#6

10-01-2023, 11:27 PM

Re: Is this a capacitor?

Originally posted by petehall347

tvs so very likely its good . they short if bad ,

I agree. No short and no sign of damage in the area.

Thanks.
Comment
stenio

Member

Join Date: Sep 2023

Posts: 10

Country: Italy
#7

10-01-2023, 11:33 PM

Re: Is this a capacitor?

Originally posted by stj

st only make semiconductors.
maybe it's a transorb

It is connected between the signal/power lines on a S0 bus of a ISDN phone. It makes sense.

Thanks.
Comment
prashant51

New Member

Join Date: May 2020

Posts: 1

Country: India
#8

11-29-2023, 01:03 AM

Looks like a diode
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