How the hell did you come up with a 1500uH inductor? Did you even look in the datasheet for LM2574 ?
Datasheet :
http://www.ti.com.cn/cn/lit/ds/symlink/lm2574.pdf Inductor selection: See page 14, figure 25. See Design Procedure, page 13. I would probably choose 470uH-680uH depeding on what input voltage range is more likely to be used.
The diode you chose is a Standard Recovery 1A one. It's crap. You need a fast recovery / schottky diode. Again, page 13, recommended diode is fast recovery kind with 1.5x the current you want.
Through hole, 1n5817 would work fine:
http://www.digikey.com/product-detail/en/1N5817-TP/1N5817-TPCT-ND/950586SMD, maybe something like this:
http://www.digikey.com/product-detail/en/DB3J208K0L/DB3J208K0LCT-ND/2704394http://www.digikey.com/product-detail/en/SS110-TP/SS110-TPCT-ND/950555Capacitors are probably OK, but you can do better.
You don't need 220uF at the input. Datasheet recommends as little as 22uF. 100-150uF would probably be more than enough. If your input will be a maximum of 19v, then you can choose a maximum of 35v, no need to go with 50v.
For example:
http://www.digikey.com/product-detail/en/UCL1V151MNL1GS/493-3955-1-ND/2300382You have 3.3v at the output so no point using 35-50v rated capacitors there. Also, the regulator likes low esr capacitors on the output, the one you chose has 0.35 ohm esr which is low, but you can do better. You can go with 220-470uF 10-16v at the output and if you want to, you can add a small 10-22uH inductor and a second capacitor to get output even smoother.
Suggestions:
http://www.digikey.com/product-detail/en/EEE-FP1A331AP/PCE4525CT-ND/1701024http://www.digikey.com/product-detail/en/UCL1A331MCL6GS/493-3906-1-ND/2300333 At 3.3v 200-300mA output and about 75% efficiency, the regulator won't heat up much, so you don't need to chose 5000h@105c rated capacitors.
later edit: also read application hints on page 17-20 and do the calculations for the formulas in those pages using your numbers (3.3v and 0.2-0.3a, 5-19v input voltage etc) and you will see why the parts you chose are not so good.
even later edit: as for inductors, something like these would probably work fine:
http://www.digikey.com/product-detail/en/SDR1307-471KL/SDR1307-471KLCT-ND/3043672http://www.digikey.com/product-detail/en/SRR1280-471K/SRR1280-471KLCT-ND/2127445