I have a vehicle control module that contains 12 individual surface mounted electrolytic capacitors. I need to find replacement capacitors but am having a difficult time interpreting the codes.
Can someone help me decipher the following four codes? Thanks…!!!
One group of capacitors reads:
623
|
50E
The second group of capacitors reads:
501
4R7
3 5E
A single capacitor that reads:
47
VFK.
6V3
Another single capacitor that reads:
10
35S.
6P7
Welcome to the Technical Forum. Can you provide the pictures of the capacitors along with the part marking? It would be usedful to provide size with each one also.
Pics attached… Capacitor locations are C8-C18, and C20.
I’m not sure of the size.
It is very hard to do this withoug sizes. Though here is the list I found for the
A single capacitor that reads:
47
VFK.
6V3
Here is the list for what I foundL: https://www.digikey.com/en/products/filter/aluminum-electrolytic-capacitors/58?s=N4IgjCBcoEwAwBYCcVQGMoDMCGAbAzgKYA0IA9lANogIDsABAK0BiIAuqQA4AuUIAqgDsAltwDymALKFs%2BAK4AnQiAC%2BpALQJUIDJBwES5KiADMcFGxVqQMY2myd69OnMxOAbADoTAN3YqgA
I am unable to narrow down the search as I do not have size.
623
|
50E unable to verify
The second group of capacitors reads:
501
4R7
3 5E
I would assme this is 4.7uf and 35 volts on this link:
I could not narrow down to one part as no size provided. You will need to verify if thes are correct.
THANK YOU…!!! Should I de-solder and remove one of each capacitor and try to get a measurement? Do you need height and diameter only or something more?
You might not need to, the spacing between the solder pads would dictate what size cap can go in the spot. How much space is there between the two pads? the overall diameter of the cap is a good guess if you want to avoid a de-solder; those appear to be surface mount.
I used some digital calipers and was able to get the diameter and the height from the circuit board for each of the capacitors. I am providing those dimensions below. I also took a side picture with a pen in the background for scale… not sure if that helps or not. Some of them are spaced in a row with just enough room between them for maybe a credit card to slide in between them.
623
|
50E
Diameter: 4.0 mm
Height: 5.0 mm
501
4R7
3 5E
Diameter: 4.0 mm
Height: 5.25 mm
47
VFK.
6V3
Diameter: 6.6 mm
Height: 6.0 mm
10
35S.
6P7
Diameter: 4.2 mm
Height: 5.5 mm
Hello,
Thanks for the dimensions, the parts are close together on the board so you won’t want to exceed the diameter. In order to match these we need the base measurement, the L x W of the black base of the capacitors. Looks like you may have 4.7uf, 47uf and 10uf value capacitor but I’m not sure on the 623 I 50E capacitor, can you also send us a photo of just that capacitor clearly showing the markings, thanks.
Hi Greg,
For future reference on help identifying the SMD caps and their markings take a look at the post by Aaron Rollens found in link: Surface Mount Capacitors and their Markings
The first 623 50E cap could be 623uF at 50V. Unfortunately we do not have any at 623uF to offer in SMD package of electrolytics we carry so perhaps the 623 marking isn’t the capacitance value. I’m also not sure of the value of this cap. Like Steve said, if you can send a more clear pic of this cap it might help us better.
The second is likely 4.7uF 35V something like 565-EMVY350ARA4R7MD55GCT-ND which is 4mm diameter at 5.2mm height or 56-MAL215370478E3CT-ND which is 4mm Dia at 5.3mm height.
Third is likely 47uF at 35V though I found none at 6.6mm Dia, only 6.3 closest with height of 6mm: https://www.digikey.com/en/products/filter/aluminum-electrolytic-capacitors/58?s=N4IgjCBcoCwGxVAYygMwIYBsDOBTANCAPZQDa4ArAOwCcCAuoQA4AuUIAyiwE4CWAdgHMQAX0JwaiECkgYcBYmRAwADDQDMGkIxCt2XPkNGEwFFSqky5eQiUjlT6%2BNuZtInHgOFiQAJhUwktDSaFg2ivbKVAAEAK0AYi66biAAqvy8LADyqACyuOjYAK7cuMYgALRByFA8RQp2Dto%2BFb6Wtdz1tkoUzSIiQA
Last I think is 10uF at 35V but we don’t have any at that 4.2mm dia, the link below shows all in stock at 4mm diameter and 5.4mm to 5.5mm height.
Hope that helps. Have a wonderful day.
Thank you all very much for all the information and assistance thus far. This board is from 2006/2007 era so it is approaching 20 years old.
As requested, I am providing some close-up pics of all capacitors. I could be wrong but when I zoom in on the second capacitor’s markings, it seems to be “5D1” as opposed to “501” but I’m just not sure.
I hope these close-up pics help to clarify. If the current modern line of capacitors won’t fit, could I either find a slightly higher V capacitor that does fit or would it be possible to switch these to ceramic capacitors?
Thanks again for all your help. I really appreciate it.
Hello @greg_stephens12
Thank for the photos of the capacitors, the only capacitor that I could not find a cross for on our site is the capacitor with part markings 623 50E on it.
For the 4.7uF 35V, capacitor with the 5D1 part marking, part number 565-EMVY350ARA4R7MD55GCT-ND is a good replacement for it.
For the 47uF 6.3V capacitor with the VFK part marking, part number 732-8281-1-ND is a good replacement for it.
For the 10uF 35V capacitor with the 6P7 part marking, part number 1572-106SML035MD4CT-ND is a good replacement for it.
Hi greg_stephens12,
For the part marked as:
623
|
50E
Diameter: 4.0 mm
Height: 5.0 mm
As neither “623” nor “50” would make sense as standard capacitance values, I would suggest that the “|” is likely a “1”, as in 1uF. Then the top line would be just a date/lot code. This would make it a 50V 1uF cap, such as these:
Thank you to everyone who took the time to lend a helping hand. I have placed an order for the replacement capacitors and hopefully, I can get this device working again.
Thanks again…!!!
Quick question… A couple of the electrolytic capacitors I ordered don’t seem to have polarity markings on them. The bottoms pads do have the unique shape that matches the outline on the circuit board so… should I just orient them on the board to match the printed outline?
thanks
I would say it might be okay. Though if you ordered the capacitors from us, we should have the data sheet linked. It never hurts to check the data sheet to make sure. Capacitors can really pop and be very dangerous if they are not oriented correctly. I would go toward caution.
Thanks… I did pull the data sheet for each but they were not conclusive. One data sheet showed the negative polarity as the side with the markings even though the capacitors I have do not contain any such polarity markings.
I read recently that the chamfered “dog-eared” corners of electrolytic capacitors are always on the positive side and the straight flat edge is the negative side. Is this correct?
So. I am looking at the capactors listed above. I have part number EMVY350ARA4R7MD55G. Lookig at page one of the data sheet right on the bottom of the page where it states marking, they are showing the plus and minus on the face of the capcitor. The negative appears to be on the side of the top side mark. The positive and negatice are shown on the outside of the circle.
I have pulled up part number 732-8281-1-ND for the data sheet . I look at the top drawing where it states dimensions and the plus and minus are shown. The plus appears on the side where the part has the indentations on the bottom.
Part number 1572-106SML035MD4DCT-ND shows on the drawing that the plus is on the sidw where the indentations are. So the polarity marks are listed on the data sheets for those parts on the website.
If there you have other part numbers you would have to check those data sheets. You sometimes have to search as they generally just put the plus are minus sign in the drawings. They could be in other locations like the first one as they listed them under the markings.
