>=20
>=20
> Hello Alex,
>=20
> My experience with the MG chemicals developer, and the=20
> powdered form from circuit specialist running the developer=20
> at 70 degrees F. The development time is 50 to 70 minutes.=20
> Depending on the board temperature. It still appears that if=20
> you developer mixture is right, and the temperature is right,=20
> then your exposure time is too long.
>=20
> I use 3 UV Florescent tubes with reflectors ay 6" from the=20
> board at an exposure time of 2:25 Minutes. My results are=20
> very consistent boards with very good resolution.
>=20

Interesting.  I hadn't thought of adjusting the exposure time.  I am
using the MG Chemicals exposure lamp, which has two bulbs.  They
recommend 5 minutes.

Are you doing anything with SSOP parts (or similar size), by any chance?

Alex

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