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8-Layer PCB Stackup Design Guidelines: Best Practices & Reference

Essential 8-Layer PCB Stackup Design Guidelines: Why It Matters

8-layer PCB stackup design guidelines are essential for engineers developing medium- to high-complexity electronic systems. An 8-layer PCB stackup provides an optimal balance between signal integrity, power distribution, and routing flexibility — making it a popular choice for advanced consumer electronics, embedded systems, and communication hardware.

According to industry standards such as IPC-2221, proper stackup design is critical for ensuring manufacturability, impedance control, and long-term reliability. Following proper 8-layer PCB stackup design guidelines helps minimize noise, reduce crosstalk, and ensure reliable high-speed performance. This comprehensive reference covers standard layer configurations, material selection considerations, and manufacturing best practices for creating an effective 8-layer PCB stackup.

Standard 8-Layer PCB Stackup Configurations for Manufacturing

These standard 8L layers PCB stack-up is the most common options selected by PCB designers. The standard layer buildup can be utilized in most applications. Also, these options collected most possible considerations including reliability, performance, and PCB manufacturing cost.

As a standard option, you can get a variable multi-layer PCB stack-up options from us, which is defined by following:

Prepreg: All the prepreg selection refer Shengyi S1000HB
Base materials: Base material:: Tg-170 ( Strongly recommended)
PCB thickness: 1.0mm/1.6mm/2.0mm/2.4mm/3.0mm
Final finished copper thickness:1/1/1/1/1//1/1/1oz (Note: the out layer copper thickness below is base copper thickness+plating copper)
Remark: The Prepreg thickness could be properly adjusted according to track/copper distribution from original design.

8L, T=1.00mm, 1/1/1/1/1/1/1/1 oz

8-Layer Stackup Example: 1.0mm Thickness Configuration

	Layer			T: =um	Material
SMT		Solder Mask			Solder Mask
TOP	L1	Copper		20-25	Plating Copper
TOP	L1	Copper		18	Base Copper
		Prepreg	2116X1		Prepreg
IN1	L2	Copper		35	Copper
		Core	FR4	60	Core
		Core	FR4	60	Core
IN2	L3	Copper		35	Copper
		Prepreg	2116X1		Prepreg
IN3	L4	Copper		35	Copper
		Core	FR4	60	Core
		Core	FR4	60	Core
IN4	L5	Copper		35	Copper
		Prepreg	2116X1		Prepreg
IN5	L6	Copper		35	Copper
		Core	FR4	60	Core
		Core	FR4	60	Core
IN6	L7	Copper		35	Copper
		Prepreg	2116X1		Prepreg
BOT	L8	Copper		18	Base Copper
BOT	L8	Copper		20-25	Plating Copper
SMB		Solder Mask
	Nornimal PCB thickness: 1.00+/-0.10mm

8L, T=1.60mm, 1/1/1/1/1/1/1/1 oz

8-Layer Stackup Example: 1.6mm Thickness Configuration

	Layer			T: =um	Material
SMT		Solder Mask			Solder Mask
TOP	L1	Copper		20-25	Plating Copper
TOP	L1	Copper		18	Base Copper
		Prepreg	1080×1		Prepreg
		Prepreg	1080×1		Prepreg
IN1	L2	Copper		35	Copper
		Core	FR4	180	Core
		Core	FR4	180	Core
IN2	L3	Copper		35	Copper
		Prepreg	7628X1		Prepreg
IN3	L4	Copper		35	Copper
		Core	FR4	180	Core
		Core	FR4	180	Core
IN4	L5	Copper		35	Copper
		Prepreg	7628X1		Prepreg
IN5	L6	Copper		35	Copper
		Core	FR4	180	Core
		Core	FR4	180	Core
IN6	L7			35	Copper
		Prepreg	1080×1		Prepreg
		Prepreg	1080×1		Prepreg
BOT	L8			18	Base Copper
BOT	L8			20-25	Plating Copper
		Solder Mask			Solder Mask
	Nornimal PCB thickness: 1.60+/-0.16mm

8L, T=2.00mm, 1/1/1/1/1/1/1/1 oz

8L PCB Stack-Up T=2.00mm

	Layer			T: =um	Material
SMT		Solder Mask			Solder Mask
TOP	L1	Copper		20-25	Plating Copper
TOP	L1	Copper		18	Base Copper
		Prepreg	1080×1		Prepreg
		Prepreg	7628×1		Prepreg
IN1	L2	Copper		35	Copper
		Core	FR4	280	Core
		Core	FR4	280	Core
IN2	L3	Copper		35	Copper
		Prepreg	1080×1		Prepreg
		Prepreg	1080×1		Prepreg
IN3	L4	Copper		35	Copper
		Core	FR4	280	Core
		Core	FR4	280	Core
IN4	L5	Copper		35	Copper
		Prepreg	1080×1		Prepreg
		Prepreg	1080×1		Prepreg
IN5	L6	Copper		35	Copper
		Core	FR4	280	Core
		Core	FR4	280	Core
IN6	L7	Copper		35	Core
		Prepreg	7628×1		Prepreg
		Prepreg	1080×1		Prepreg
BOT	L8	Prepreg		18	Base Copper
BOT	L8	Prepreg		20-25	Plating Copper
SMB					Solder Mask
	Nornimal PCB thickness: 2.00+/-0.20mm

8L, T=2.40mm, 1/1/1/1/1/1/1/1 oz

8L PCB Stack-Up T=2.40mm

	Layer			T: =um	Material
SMT		Solder Mask			Solder Mask
TOP	L1	Copper		20-25	Plating Copper
TOP	L1	Copper		18	Base Copper
		Prepreg	1080×1		Prepreg
		Prepreg	1080×1		Prepreg
IN1	L2	Copper		35	Copper
		Core	FR4	440	Core
		Core	FR4	440	Core
IN2	L3	Copper		35	Copper
		Prepreg	7628X1		Prepreg
IN3	L4	Copper		35	Copper
		Core	FR4	440	Core
		Core	FR4	440	Core
IN4	L5	Copper		35	Copper
		Prepreg	7628X1		Prepreg
IN5	L6	Copper		35	Copper
		Core	FR4	440	Core
		Core	FR4	440	Core
IN6	L7			35	Copper
		Prepreg	1080×1		Prepreg
		Prepreg	1080×1		Prepreg
BOT	L8			18	Base Copper
BOT	L8			20-25	Plating Copper
		Solder Mask			Solder Mask
	Nornimal PCB thickness: 2.40+/-0.24mm

8L, T=3.00mm, 1/1/1/1/1/1/1/1 oz

8L PCB Stack-Up T=3.00mm

	Layer			T: =um	Material
SMT		Solder Mask			Solder Mask
TOP	L1	Copper		20-25	Plating Copper
TOP	L1	Copper		18	Base Copper
		Prepreg	1080×1		Prepreg
		Prepreg	1080×1		Prepreg
IN1	L2	Copper		35	Copper
		Core	FR4	640	Core
		Core	FR4	640	Core
IN2	L3	Copper		35	Copper
		Prepreg	7628X1		Prepreg
IN3	L4	Copper		35	Copper
		Core	FR4	640	Core
		Core	FR4	640	Core
IN4	L5	Copper		35	Copper
		Prepreg	7628X1		Prepreg
IN5	L6	Copper		35	Copper
		Core	FR4	640	Core
		Core	FR4	640	Core
IN6	L7			35	Copper
		Prepreg	1080×1		Prepreg
		Prepreg	1080×1		Prepreg
BOT	L8			18	Base Copper
BOT	L8			20-25	Plating Copper
		Solder Mask			Solder Mask
	Nornimal PCB thickness: 3.00+/-0.30mm

Above stack up is our standard 8L layer PCB buildup that upon the best manufacturing features (quality and price). We strongly recommend to use Tg170 laminate material for a multi-layer PCB (>= 8 layers) stack-up construction to avoid any potential quality problem during your PCB assembly process: such as delamination, blister in lead free assembly process, etc.

Above stack up is our standard 8L layer buildup with 1/1/1/1/1/1/1/1 oz final finished copper thickness that the upon best manufacturing features for multi-layer PCB.

If you need a customized multi-layer PCB stack up or buildup with impedance control for specific 8L circuit board, or you need 2oz or upper copper thickness PCB stack up, please feel freely send your request to [email protected].

Shengyi Prepreg S1000HB Reference

If you need a customized stack up or stack up with specific impedance control at 10L circuit board, or you need 2 oz or upper copper thickness PCB build up, you can freely send your request to [email protected].

Based Material Line Up S1000H (S1000HB)-PREPREG (B-STAGE)

Glass style	RC (%) Nominal	Thickness		Dk				Df
Glass style	RC (%) Nominal	mm	mil	1GHz	3GHz	5GHz	10GHz	1 GHz	3 GHz	5 GHz	10 GHz
7628	43*	0.185	7.28	4.81	4.74	4.74	4.73	0.014	0.015	0.015	0.016
7628	46	0.195	7.68	4.74	4.68	4.66	4.66	0.015	0.016	0.016	0.016
7628	48	0.205	8.07	4.70	4.63	4.61	4.61	0.015	0.016	0.016	0.017
7628	50	0.215	8.46	4.65	4.58	4.57	4.57	0.016	0.016	0.017	0.017
7628	52	0.225	8.86	4.59	4.52	4.51	4.50	0.016	0.016	0.017	0.017
1506	48	0.160	6.30	4.70	4.63	4.61	4.61	0.015	0.016	0.016	0.017
1506	50	0.170	6.69	4.65	4.58	4.57	4.57	0.016	0.016	0.017	0.017
1506	52	0.180	7.09	4.59	4.52	4.51	4.50	0.016	0.016	0.017	0.017
2116	52*	0.113	4.45	4.59	4.52	4.51	4.50	0.016	0.016	0.017	0.017
2116	53*	0.116	4.57	4.57	4.50	4.49	4.48	0.016	0.017	0.017	0.018
2116	55	0.120	4.72	4.53	4.45	4.43	4.43	0.017	0.017	0.018	0.018
2116	58	0.130	5.12	4.45	4.38	4.36	4.36	0.017	0.018	0.018	0.018
3313	57	0.100	3.94	4.48	4.41	4.39	4.39	0.017	0.018	0.018	0.018
1080	65	0.072	2.83	4.29	4.21	4.19	4.18	0.019	0.019	0.019	0.020
1080	68	0.081	3.19	4.21	4.13	4.11	4.11	0.020	0.019	0.020	0.020
1080	70	0.087	3.43	4.16	4.08	4.05	4.05	0.020	0.019	0.020	0.020
106	73	0.050	1.97	4.09	4.01	3.97	3.97	0.020	0.020	0.020	0.020
106	78	0.063	2.14	3.97	3.89	3.83	3.83	0.02	0.021	0.020	0.022

Remark:
1) Test by SPDR method.
2) The data above show actual values and are not guaranteed, for your reference only.
3) RC* is not common type for reference.
4) Last update: Oct, 2025