ST4 0.40 mm Micro Blade & Beam Ultra Fine Pitch Header

Manufactured on an ultra-fine 0.40 mm pitch, the ST4 header is designed for board-to-board connections where space is at a premium. The ST4 provides up to 28 Gbps performance.

Download Product Specs

Features

28 Gbps performance
Ultra fine 0.40 mm pitch
Up to 100 I/Os
Slim footprint
Stack heights from 4 mm to 6 mm

Current rating: 1.6 A max
Voltage rating: 155 VAC/ 219 VDC max
Automotive A-Series product available

Configure your product using the options below

Configured Part Number

View Full Mated Sets

ST4-50-1.50-L-D-P-TR

Add to Cart

Get a Free Sample

Check Pricing

Check Availability

Get a Formal Quote

Download eCAD Files

Contact Customer Service

2D view may not be representative of the configured product. Please see 3D preview or CAD download for actual representation.
Read our 3D Models Disclaimer.
For assistance with 3D Models, please contact [email protected].
For 3D Models suitable for EM Field Solvers, please contact Samtec’s Signal Integrity Group.

Protocols

PDR	IB EDR	32GFC	64GFC	IB HDR	128GFC	IB NDR	256GFC	IB XDR
	25.8 Gbps	28.05 Gbps	28.9 Gbps PAM4	53.13 Gbps PAM4	56.1 Gbps PAM4	106.25 Gbps PAM4	112.2 Gbps PAM4	200 Gbps PAM4
28 Gbps NRZ	Capable	Capable	Capable	No	No	No	No	No

PDR	USB 10Gbps	PCIe 4.0	USB 20Gbps	PCIe 5.0	USB 40Gbps	USB 80Gbps	PCIe 6.0	PCIe 7.0
	10 Gbps	16 Gbps	20 Gbps	32 Gbps	40 Gbps	40 Gbps	64 Gbps PAM4	128 Gbps PAM4
28 Gbps NRZ	Capable	Capable	Capable	No	No	No	No	No

PDR	Ethernet	Ethernet	Ethernet	OIF CEI 56G	Ethernet	OIF CEI 112G	Ethernet	OIF CEI 224G
	10 Gbps	25 Gbps	50 Gbps PAM4	56 Gbps PAM4	100 Gbps PAM4	112 Gbps PAM4	200 Gbps PAM4	224 Gbps PAM4
28 Gbps NRZ	Capable	Capable	No	No	No	No	No	No

PDR	SATA 2.0	SAS 2.0	SATA 3.0	SAS 3.0	SATA 3.5	SAS 4.0	CXL 1.1/2.0	CXL 3.2
	3 Gbps	6 Gbps	6 Gbps	12 Gbps	16 Gbps	22.5 Gbps	32 Gbps	64 Gbps PAM4
28 Gbps NRZ	Capable	Capable	Capable	Capable	Capable	Capable	No	No

How is this calculated?

Catalog Pages

PDF Catalog Page - ST4

PDF Catalog Page - Automotive - A-SS4-ST4

Prints

ST4 - .4mm (.0157") Super Low Profile Terminal Strip

ST4/SS4 Mated Views

Mates and Related Components

Mating Connectors

SS4

0.40 mm Micro Blade & Beam Ultra Fine Pitch Socket

View Product

Test Reports

ST4/SS4 - Design Qualification Test Report

Full Mated Sets

Board Termination:

Mating Orientation:

Stack Height:

min.

max.

Positions:

min.

max.

Part Number	Mating Part Number	Pitch	Mated Stack Height	Positions	Board Termination	Mating Orientation	Product Data Rate
ST4-10-1.50-L-D-P-TR	SS4-10-3.50-L-D-K-TR	0.40 mm (.0158")	5.00	20	Surface Mount	Parallel	28 Gbps NRZ
ST4-10-2.50-L-D-P-TR	SS4-10-3.50-L-D-K-TR	0.40 mm (.0158")	6.00	20	Surface Mount	Parallel	28 Gbps NRZ
ST4-10-1.00-L-D-P-TR	SS4-10-3.00-L-D-K-TR	0.40 mm (.0158")	4.00	20	Surface Mount	Parallel	28 Gbps NRZ
ST4-10-1.50-L-D-P-TR	SS4-10-3.00-L-D-K-TR	0.40 mm (.0158")	4.50	20	Surface Mount	Parallel	28 Gbps NRZ
ST4-10-2.50-L-D-P-TR	SS4-10-3.00-L-D-K-TR	0.40 mm (.0158")	5.50	20	Surface Mount	Parallel	28 Gbps NRZ
ST4-10-1.00-L-D-P-TR	SS4-10-3.50-L-D-K-TR	0.40 mm (.0158")	4.50	20	Surface Mount	Parallel	28 Gbps NRZ
ST4-20-1.00-L-D-P-TR	SS4-20-3.00-L-D-K-TR	0.40 mm (.0158")	4.00	40	Surface Mount	Parallel	28 Gbps NRZ
ST4-20-1.00-L-D-P-TR	SS4-20-3.50-L-D-K-TR	0.40 mm (.0158")	4.50	40	Surface Mount	Parallel	28 Gbps NRZ
ST4-20-2.50-L-D-P-TR	SS4-20-3.50-L-D-K-TR	0.40 mm (.0158")	6.00	40	Surface Mount	Parallel	28 Gbps NRZ
ST4-20-1.50-L-D-P-TR	SS4-20-3.00-L-D-K-TR	0.40 mm (.0158")	4.50	40	Surface Mount	Parallel	28 Gbps NRZ
ST4-20-1.50-L-D-P-TR	SS4-20-3.50-L-D-K-TR	0.40 mm (.0158")	5.00	40	Surface Mount	Parallel	28 Gbps NRZ
ST4-20-2.50-L-D-P-TR	SS4-20-3.00-L-D-K-TR	0.40 mm (.0158")	5.50	40	Surface Mount	Parallel	28 Gbps NRZ
ST4-30-1.50-L-D-P-TR	SS4-30-3.50-L-D-K-TR	0.40 mm (.0158")	5.00	60	Surface Mount	Parallel	28 Gbps NRZ
ST4-30-1.00-L-D-P-TR	SS4-30-3.00-L-D-K-TR	0.40 mm (.0158")	4.00	60	Surface Mount	Parallel	28 Gbps NRZ
ST4-30-1.00-L-D-P-TR	SS4-30-3.50-L-D-K-TR	0.40 mm (.0158")	4.50	60	Surface Mount	Parallel	28 Gbps NRZ
ST4-30-2.50-L-D-P-TR	SS4-30-3.50-L-D-K-TR	0.40 mm (.0158")	6.00	60	Surface Mount	Parallel	28 Gbps NRZ
ST4-30-1.50-L-D-P-TR	SS4-30-3.00-L-D-K-TR	0.40 mm (.0158")	4.50	60	Surface Mount	Parallel	28 Gbps NRZ
ST4-30-2.50-L-D-P-TR	SS4-30-3.00-L-D-K-TR	0.40 mm (.0158")	5.50	60	Surface Mount	Parallel	28 Gbps NRZ
ST4-40-1.00-L-D-P-TR	SS4-40-3.50-L-D-K-TR	0.40 mm (.0158")	4.50	80	Surface Mount	Parallel	28 Gbps NRZ
ST4-40-2.50-L-D-P-TR	SS4-40-3.50-L-D-K-TR	0.40 mm (.0158")	6.00	80	Surface Mount	Parallel	28 Gbps NRZ