Identify Cap Manufacturer from Symbol

[tjg79]

Hello forum,

I'm recapping a Sony Telephone Answering Machine, IT-A650. I need assistance identifying the manufacturers from the symbols on two caps. The pictures are attached below.

Does anyone know these manufacturers?

Regards




1. R in a square.



2. Triangle with arrowheads on the vertices.

[ReeceyBurger123]

Re: Identify Cap Manufacturer from Symbol

Mitsubishi caps !

[ReeceyBurger123]

Re: Identify Cap Manufacturer from Symbol

Got an image of the bung and vent ?

[tjg79]

Re: Identify Cap Manufacturer from Symbol

Got an image of the bung and vent ?

What's the "bung and vent?"

Regards

[tjg79]

Re: Identify Cap Manufacturer from Symbol

OK, the triangle with arrowheads is likely Mitsubishi.

What is the "R" in a square?

Regards

[Behemot]

Re: Identify Cap Manufacturer from Symbol

Rubycon. They use that on very small caps.

[tjg79]

Re: Identify Cap Manufacturer from Symbol

Thanks Behemot.

Regards

[tjg79]

Re: Identify Cap Manufacturer from Symbol

Is there a good source to buy Rubycon caps is small quantities?

I don't see then listed on Mouser and Digikey only stocks very few types. Special orders require large quantities.

Regards

[Behemot]

Re: Identify Cap Manufacturer from Symbol

Not sure, what exactly do you need? You can use similar caps from Chemi-Con (usually cheapest) or others…

[tjg79]

Re: Identify Cap Manufacturer from Symbol

Not sure, what exactly do you need? You can use similar caps from Chemi-Con (usually cheapest) or others…

I'm not sure what I need yet either. I'm trying to determine the exact specs on what I've got so I can then find either an exact replacement or suitable substitute from a high quality manufacturer.

I'm recapping three Sony Telephone Answering Machines, so I'll need about 180 caps of which there appears to be 19 different caps. Two are described below.

On the Mitsubishi cap pictured in post #1, these are the specs that I have:

Mitsubishi 1μF, 50V, 85°C, 07N3, dia. 4.04mm, length 5.57mm, lead spacing 1.43mm, lead dia. 0.44mm.

One the Rubycon cap pictured in post #1, these are the specs that I have:

Rubycon 2.2μF, 50V, 85°C, CEW M896, dia. 5.13mm, length 11.32mm, lead spacing 2.18mm, lead dia. 0.48mm.

[stj]

Re: Identify Cap Manufacturer from Symbol

anything 85' is just "general purpose" stuff.

[tjg79]

Re: Identify Cap Manufacturer from Symbol

anything 85' is just "general purpose" stuff.

Yes, but even if you go with a "standard" cap, there are usually three or more "standard caps" from the same manufacturer that have other characteristics, such as ripple current, impedance, etc..., that vary significantly. So, the question is which of the several choices of "standard cap" is the best choice?

Regards

[Behemot]

Re: Identify Cap Manufacturer from Symbol

I think most of them will have superior specs after decade or two. So take the middle or the lower ones, just for 105 °C, those survive longer.

Are those original caps already bad actually? Cause both should last long…

[tjg79]

Re: Identify Cap Manufacturer from Symbol

I think most of them will have superior specs after decade or two. So take the middle or the lower ones, just for 105 °C, those survive longer.

Are those original caps already bad actually? Cause both should last long…

#1 in the first post is a 100μF, 20%, 6.3V, 85°C cap that tests out as 107.3μF and 1.06Ω ESR in circuit and 99.55μF and 0.7Ω ESR out of circuit.

#2 in the first post is a 1μF, 20%, 50V, 85°C cap that tests out as 0.90μF and 5.2Ω ESR.

I'm not sure about what the correct ESR for these caps should be, but of the 60 plus caps in each phone, many do test out bad such as leaky, open or ESR >5Ω to 40Ω plus.

Considering the age of these telephones, it's more efficient to just replace all of the electrolytic caps while I've got the phone opened up and disassembled.

The failed caps are causing a few of the power transistors to heat up excessively causing other indications of heat damage.

[Behemot]

Re: Identify Cap Manufacturer from Symbol

Those values are absolutelly normal. Ordinary 1uF caps have ESR of 5 to 15 ohm, depending on their grade. But if few are really bad, I guess it's worth replacing them…

[kc8adu]

Re: Identify Cap Manufacturer from Symbol

second is matsushita(panasonic)
quite old.

[tjg79]

Re: Identify Cap Manufacturer from Symbol

second is matsushita(panasonic)
quite old.

Is the triangle with arrowhead on the vertices Matsushita? Now, Panasonic?

Someone indicated they were Mitsubishi.

[tjg79]

Re: Identify Cap Manufacturer from Symbol

When finding replacement or substitute caps, how do you know if you need a bi-polar cap? What are the indications?

Regards

[Behemot]

Re: Identify Cap Manufacturer from Symbol

Yeah they are Matsushita, I completelly missed that…

BP caps have no cathode (-) marking and often something like BP or bipolar on them.

[tjg79]

Re: Identify Cap Manufacturer from Symbol

Is there a problem if you replace a regular cap with a bi-polar cap?