SI-3033A and JRC 7805A

I am in need of SI-3033A and JRC 7805A Voltage regulators. I have looked around but can't find any where I can buy single ones or even less then 10. I would love to know where I could possibly buy some from.
Thanks,
tacheek

The 7805 regulator probably isn't readily available in single quantities because most suppliers prefer any individual transaction to be worth more than 25 cents.

You can get one here but it's way overpriced at $0.50. All Electronics | Electronic and Electro-Mechanical Parts and Supplies at Discount Prices
This is a little more reasonable at $0.35. MC7805CT 5V 1A Positive Voltage Regulator (Motorola)-The Electronic Goldmine

The Regulators in which I need are 5 prong ones. The one shown is 3. Thanks for the quick reply!

We could use a little bit more information... photo? schematic (partial)?