UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > General Vintage Technology > Components and Circuits

Notices

Components and Circuits For discussions about component types, alternatives and availability, circuit configurations and modifications etc. Discussions here should be of a general nature and not about specific sets.

Reply
 
Thread Tools
Old 15th Oct 2018, 6:09 pm   #1
astral highway
Nonode
 
astral highway's Avatar
 
Join Date: Nov 2006
Location: London, UK.
Posts: 2,652
Default Voltage rating of these caps pls?

The 10nF ones are marked:
A100 103K C9727

The 1uF ones are marked:
A1C 105M

Iíd be interested in the manufacturer too if anyone can help

Thank you
Attached Thumbnails
Click image for larger version

Name:	5C3B911C-1E9F-4CCE-A902-D758C5CB1A04.jpg
Views:	104
Size:	78.2 KB
ID:	171011   Click image for larger version

Name:	E7C6292C-9D84-48C0-A1D9-1A4006D8B9C9.jpg
Views:	80
Size:	58.1 KB
ID:	171012  
__________________
Al
astral highway is online now   Reply With Quote
Old 15th Oct 2018, 8:07 pm   #2
high_vacuum_house
Heptode
 
high_vacuum_house's Avatar
 
Join Date: May 2003
Location: Rugby (home) and all over the country for work
Posts: 971
Default Re: Voltage rating of these caps pls?

I have some identical ones here (black cased) that are 63V rated

Christopher Capener
__________________
A proper radio is one that needs to be moved with a wheelbarrow !!
high_vacuum_house is online now   Reply With Quote
Old 15th Oct 2018, 10:31 pm   #3
astral highway
Nonode
 
astral highway's Avatar
 
Join Date: Nov 2006
Location: London, UK.
Posts: 2,652
Default Re: Voltage rating of these caps pls?

Thanks Chris, thatís great.

To be clear, is that for both types?

Cheers!
__________________
Al
astral highway is online now   Reply With Quote
Old 16th Oct 2018, 5:51 am   #4
Argus25
Octode
 
Argus25's Avatar
 
Join Date: Oct 2016
Location: Maroochydore, Queensland, Australia.
Posts: 1,652
Default Re: Voltage rating of these caps pls?

I'm pretty sure the 103's are 100V types. I have seen these before used in mil spec gear in circuits running over 50V.

As for the 105's anybody's guess. For something like those I wouldn't push them over 50v. Though the A1C might indicate 100v, but unless a reference could be found, I'd not risk it. The 1 could be a multiplier and the C 100.
Argus25 is offline   Reply With Quote
Old 16th Oct 2018, 1:53 pm   #5
ionburn
Hexode
 
ionburn's Avatar
 
Join Date: Dec 2014
Location: Lincoln, Lincolnshire, UK.
Posts: 378
Default Re: Voltage rating of these caps pls?

I would have to double check, but I have fairly similar types which appear to be 100V DC but only 63V AC (which sounds sensible considering peak to peak).
ionburn is offline   Reply With Quote
Old 16th Oct 2018, 5:14 pm   #6
jimmc101
Heptode
 
jimmc101's Avatar
 
Join Date: Mar 2009
Location: Portsmouth, Hampshire, UK.
Posts: 607
Default Re: Voltage rating of these caps pls?

This is an AVX MR061C103KTA 0.3" square 0.2" pitch which looks very similar to your first cap. (10n 100v 10% X7R)
Catalog is here, details on page 32.

Your second looks like an AVX SR series but the marking doesn't make sense to me.
If I had to guess I'd say A for AVX, 1 for 100V, C for X7R (although Z5U is more usual for 1uF).
Warm the cap up to around 60C, if the capacity drops like a stone it's Z5U.

Jim
Attached Thumbnails
Click image for larger version

Name:	S20181016_0004.jpg
Views:	15
Size:	52.9 KB
ID:	171078  
jimmc101 is offline   Reply With Quote
Reply

Thread Tools



All times are GMT +1. The time now is 11:16 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Copyright ©2002 - 2018, Paul Stenning.