Polyester Film Capactor?

I believe that this is a 100nF capacitor used in triac motor control and a triac solenoid control circuits.

Is this a polyester cap? Would other types work ok?

Does "630S" refer to the voltage rating? This is on a 120VAC circuit, so if it is 630 volts, is that excessive?

Thks for any guidance!

They do look like it. If they are being used for suppression, the higher voltage may be to handle spikes, or possibly just a larger size to permit higher pulse energy?

The motor is a bidirectional (two coil) shaded pole motor I believe, and the solenoid is nothing large. I suspect neither draws much more than an amp.

My partner and I bought 17 vending machines at a failed ponzi scheme auctions for about a third the price of a single used machine. No, we don't want to sell week-old factory made sandwiches and candy bars. We're planning on repurposing these machines to support the maker community, both by selling maker supplies (electronics component kits, Chinese modules, STEM materials and so on) and by consignment selling local makers and artists creations.

We have a dozen of the rotating turret cold food machines with the sliding doors to make a selection. My first order of business is building a new hardware control system to get the features we want.

The triacs in question control drum rotation and the solenoid that locks it in position. I've been debating using SSRs but instead I've decided to duplicate the existing triac system – it's worked for 40+ years and it makes it easy to use the existing wiring and connectors.

One part I am happy to get rid of is the Dallas RAM IC with the internal battery! I don't need that ticking time bomb.

I just had a thought – these machines are supplied in 120VAC and 240VAC versions. The voltage rating of the caps was probably selected to handle either version

Since it isn't covered in safety agency logos, the 630 V rating is DC. Not a problem of any kind for AC circuits, but it should not be used in direct line-to-line or line-to-GND noise filtering.

And - SSRs are TRIACS (or back-to-back SCRs).

ak

AnalogKid said:

And - SSRs are TRIACS (or back-to-back SCRs).

Click to expand...

As I am well aware. But in common terminology, an SSR is a black box:

Control signal in → device operates

as opposed to discrete components.

630V film caps are usually only rated for 230Vac The .1k, I suspect is 0.1 uF in the days when when some used mF for uF (Americans only)

It was made by Illinois Capacitor (ic). now CDE (Cornell Dublei)


The brown radial epoxy mold has been used by many Mfg for many types from Mylar, PP, PE, PET and is possibly obsolete but others including Panasonic make them.

My closest match was DME2P1K-F from CDE at Mouser 650V 0.1 uF

I would classify this as a Triac Snubber.

Tony Stewart said:

I would classify this as a Triac Snubber.

Click to expand...

Thanks Tony. Triac snubber is exactly right.

Before your message, I found a TDK cap p/n B32672Z6104K000 at Digikey that seems like a reasonable replacement. Looks to be about the same as your suggestion?

CAP FILM 0.1UF 10% 630VDC RADIAL
0.1 µF Film Capacitor 310V 630V Polypropylene (PP), Metallized Radial