Photo BCB Film Thickness

Typical thicknesses of photosensitive CYCLOTENE* advanced electronics resins after soft bake, and final thicknesses (after full photo processing and hard cure).

	CYCLOTENE 4022-35 Resin thickness (µm)		CYCLOTENE 4024-40 Resin thickness (µm)		CYCLOTENE 4026-46 Resin thickness (µm)
spin speed (rpm)	after soft bake	final thickness	after soft bake	final thickness	after soft bake	final thickness
1500	6.9	5.2	10.2	7.2	18.5	14.2
2000	5.8	4.3	8.4	5.9	15.2	11.6
2500	5.2	3.8	7.4	5.2	13.3	10.2
3000	4.7	3.4	6.7	4.8	12.2	9.4
3500	4.4	3.1	6.2	4.4	11.3	8.7
4000	4.1	2.9	5.8	4.1	10.6	8.1
5000	3.7	2.6	5.2	3.7	9.4	7.3

Final thicknesses may vary slightly depending on processing conditions.

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