Surface mount resistors come in a variety of sizes. The smallest size is the 0201 package which measures a tiny 0.6mm x 0.30mm. You can find surface mount resistors as large as 6.3mm x 3.1mm which is referred to as size 2512.

Keep in mind that every manufacturer may have a variation of the measurements and power ratings other than what is in the chart below.

These numbers are just for reference. Actual parts may vary slightly in dimensions and ratings.

Size	Length (mm)	Width (mm)	Height (mm)	Watts
0201	0.60	0.30	0.25	0.05
0402	1.00	0.50	0.35	0.031/0.063
0603	1.60	0.80	0.50	0.063
0805	2.00	1.25	0.50	0.100
1206	3.20	1.60	0.60	0.125
1210	3.20	2.60	0.50	0.250
1217	3.00	4.20	0.900	0.250
2010	5.00	2.60	0.70	0.250
2020	5.08	5.08	0.90	0.500
2045	5.00	11.50	0.90	1.000
2512	6.30	3.10	0.60	0.500

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