Using non-polarised electrolytic in a PSU

[johnkenyon]

I've just made a purchasing boo-boo, and ordered 100uF/35v, 105degC non-polarised electrolytic capacitors instead of a standard polarised component.
I only realised when I came to solder the things and noticed that there was no -ve marking or band on the things...

Two of these are intended for use as the output reservoir capacitors for a 100mA per rail linear DC power supply (LM317/LM337, one for each rail), which also have a 100nF polyester cap in parallel.
This PSU isn't doing 24/7 service, the device gets used infrequently and the PSU is always disconnected from the mains when not in use.

A search of t'interweb seems to point to NP capacitors only being used where required (e.g. speaker crossovers) down to the increased cost, and not on the basis of any other characteristic.

So my questions to the audience are:
1) Is there any reason why I can't/shouldn't use these in my current design.
2) Are there any further reasons why the additional spare capacitors I bought for stock( ) can't be used in any other PSU/reservoir capacitor situation (e.g. 24/7 type stuff, input reservoir use with high ripple, SMPS part replacement etc.)

If anyone wants to look more closely the spec sheet is here: http://www.farnell.com/datasheets/1661880.pdf

Thanks in advance

/John

[Zero999]

They probably will have a slightly higher internal resistance and be physically larger, than the proper polarised capacitors, but will work perfectly, whether it be in a 24/7 application or not.

[David Hess]

They will work fine.

[schmitt trigger]

A non-polarized electrolytic is really two regular electrolytics back to back.

So, as the others said, it will work with the mentioned caveats.

[johnkenyon]

Thanks for the feedback.

The job's now stuck waiting for a small package which actually contains the advertised LM337 instead of a useless P-channel MOSFET... (And before you ask, the incorrect part was shipped from Leeds or Preston, not Shenzhen).

/John