Trying to replace capacitor - which one do I choose?

[King Mustard]

We are trying to replace two "blown" capacitors on a seven-year-old computer video card.

The capacitors appear identical and state, amongst other things, 6.3V/1500uF.

When we use that information the RS Components website, there are 24 results.

Can you help us find the correct one?

P.S. I would post a link to the results page of the RS Components website, but this forum does not allow links to be posted until I have 6+ posts on here. I also have an image of one of the capacitors, but again, the forum won't let me link to it.

 

[DJ Ovengloves]

This a ****-take?

 

[Englishsparks]

This a ****-take?

Probably

 

[King Mustard]

This a ****-take?

Probably

We are not all electricians...

I need need help choosing which one of the 24 6.3V/1500uF capacitors we should choose.

 

[Geordie Spark]

We are not all electricians...

I need need help choosing which one of the 24 6.3V/1500uF capacitors we should choose.

Welcome to the forum ..... which is an Electricians Forum.

 

[King Mustard]

Welcome to the forum ..... which is an Electricians Forum.

Which is why I'm here - I thought you guys were the best ones to help me with this problem

 

[DJ Ovengloves]

You don't need an electrician for an electronics components question though

We are not all electricians...

I need need help choosing which one of the 24 6.3V/1500uF capacitors we should choose.

 

[King Mustard]

You don't need an electrician for an electronics components question though

Oh, I thought it was all related.

Sorry guys :/

 

[ayjay]

hi king mustard don,t be put off
as long as you replace like for like you should be fine
if they are electroletic make sure you replace them the correct way around or they will pop
post a few more time and u will be able to post a pic

 

[Geordie Spark]

Which is why I'm here - I thought you guys were the best ones to help me with this problem

If you have a problem with your house wiring, or your Electric Arc Furnace in your steelworks won't fire up, or your overhead crane in your shipyard won't lift, or the lights in your supermarket aren't working then we - Electricians - are the people you need.

However, if your problem relates to electronics i.e. computers then you may be better off asking an Electronics Engineer.

 

[telectrix]

yeah. check the damaged ones. they will most likely be electrolytic and have a + on one side. they can have a slightly higher than 6.3V rating, but the 1500mfd. has to be the same. try cpc farnell for components.

 

[plugsandsparks]

with caps you are better with a picture, some are polarity sensitive. Best thing i can think off is to take it to a local Maplins store, with a magnifying glass and try and match it up with their stock. Cannot imagine it being anything special

 

[ayjay]

well done tel i like electronics too, i,m just in the process of builing an electronic water softener circuit

 

[King Mustard]

hi king mustard don,t be put off
as long as you replace like for like you should be fine
if they are electroletic make sure you replace them the correct way around or they will pop
post a few more time and u will be able to post a pic

Done, got my 6 posts

Also, a link to the 24 results that have confused me: Click Me

 

[telectrix]

my electronic knowledge is a bit out of date, ever since them new -fangled transistor thingies replaced the good old thermionic valve. LOL. not done much lately.

 

[DJ Ovengloves]

Make sure you use a decent soldering iron to replace - it needs to be very hot to prevent damaging the replacement so it melts the solder quickly and prevents excessive heat going into the new capacitor (counter intuitive I know that to prevent heat damage you need something very hot)

Done, got my 6 posts

Also, a link to the 24 results that have confused me: Click Me

 

[DJ Ovengloves]

Don't worry, it must have been more annoying for the late and great Patrick Moore getting questions about star-signs rising in Aquarius!

Oh, I thought it was all related.

Sorry guys :/

 

[plugsandsparks]

Yep as tel says it eletrolytic.
Why RS for a couple of caps, postage will be a bummer

 

[plugsandsparks]

There are only 7 out of the 24, that are close to the physical. Suggest look at each one and check the physical size against yours ( so you can get it into the board). You may also be able to match manufacturer.
You can also try digi-key as a reference to get compatible components as apart from the actual value, i.e. voltage and uF value you need to get the right tolerance and physical form factor.
Its all there on the RS site - thats why its such a good resource tool.

Oh - if in doubt get the highest (most expesnive) tolerance so it stays at 1500uF across a wide temp range

 

[King Mustard]

There are only 7 out of the 24, that are close to the physical. Suggest look at each one and check the physical size against yours ( so you can get it into the board). You may also be able to match manufacturer.
You can also try digi-key as a reference to get compatible components as apart from the actual value, i.e. voltage and uF value you need to get the right tolerance and physical form factor.
Its all there on the RS site - thats why its such a good resource tool.

Oh - if in doubt get the highest (most expesnive) tolerance so it stays at 1500uF across a wide temp range

I just checked what else is on the capacitor:

• KZJ
• M(105C)
• 4 (2)
• OU

All 6 that look the same are all 105C, are all radial, and all have a ±20% tolerance. However, it also doesn't help me determine which of the 6 to go for

1. £0.33, 10x20 mm, 0.6 mm lead diameter, 5 mm lead pitch, 5000h lifetime, 1220 mA ripple current, 4 μA leakage current
2. £0.40, 8x20 mm, 0.6 mm lead diameter, 3.5 mm lead pitch, 1220mA ripple current
3. £0.54, 10x20 mm, 0.6 mm lead diameter, 5 mm lead pitch, 3000h lifetime, 1220 mA ripple current, 3 μA leakage current
4. £0.57, 12.5x15 mm, 0.6 mm lead diameter, 5 mm lead pitch, 5000h lifetime, 1205 mA ripple current, 3 μA leakage current
5. £0.58, 10x20 mm, 0.6 mm lead diameter, 5 mm lead pitch, 5000h lifetime, 2180 mA ripple current
6. £0.60, 10x16 mm, 0.6 mm lead diameter, 5 mm lead pitch, 4000h lifetime, 2140 mA ripple current