Mfr Part #:

QMS-026-05.75-L-D-A

Samtec QMS series 52 position 0.64mm pitch surface mount header with outer shroud contacts, gold plating, and ground plane.

✓ Total Stock: 2 pcs

$ Price Range: $7.18 - $10.16

QMS-026-05.75-L-D-A Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Fe Components ✓ Non-Authorised Inventory information	2 pcs On Request	2 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

QMS-026-05.75-L-D-A Description

Short technical summary and product information.

The Samtec QMS-026-05.75-L-D-A is a 52 position, 2-row, 0.64mm pitch surface mount header with outer shroud contacts from the QMS series. It features a 5.76mm height above board and supports mated stacking heights of 10mm and 12mm. The connector includes a board guide and ground bus plane for enhanced performance.

Electrical ratings include 2.6A per pin (2 pins powered) and 15.7A per ground plane, with a voltage rating of 300 VAC. The operating temperature range is -55°C to +125°C. The contacts are phosphor bronze with 10 µ" gold plating over 50 µ" nickel, and the ground plane tail is tin plated.

The insulator is liquid crystal polymer. The connector is lead-free solderable and has a lead coplanarity of 0.10mm max. It is capable of 25 Gbps NRZ protocol. Packaging is tray with 56 parts per package; tape and reel options are available.

QMS-026-05.75-L-D-A Quick Information

Product Type: Header, Outer Shroud Contacts

Series: QMS

Canonical Name: Samtec QMS Series 52 Position 0.64mm Pitch Surface Mount Header, Outer Shroud Contacts

Subcategory: Arrays, Edge Type, Mezzanine (Board to Board)

QMS-026-05.75-L-D-A Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): MSL 1 Unlimited

REACH Status: REACH Unaffected

Lead Free: Lead-Free Solderable

QMS-026-05.75-L-D-A Estimated Pricing

Qty	Low	High
1+	$10.16	$10.16
112+	$8.78	$8.78
280+	$8.07	$8.07
504+	$7.32	$7.32
1,008+	$7.18	$7.18

Estimated market price range - modelled values for guidance only, not live distributor offers.

QMS-026-05.75-L-D-A Features

52 position 0.64mm pitch SMT header.
Gold plated phosphor bronze contacts.
Rated 2.6A per pin and 300 VAC.
Supports 25 Gbps NRZ protocol.
Lead-free solderable with ground plane.

QMS-026-05.75-L-D-A Applications

High-speed mezzanine board-to-board connections.
Data center and networking equipment.
Test and measurement instrumentation.

QMS-026-05.75-L-D-A FAQs

5 frequently asked questions generated from this part’s specifications.

How many positions does the QMS-026-05.75-L-D-A have?

52 positions in 2 rows.

What is the pitch of this connector?

0.64mm (0.025").

What is the current rating per pin?

2.6 A per pin (2 pins powered).

What is the voltage rating?

300 VAC.

What is the mounting type?

Surface mount.

Category	Arrays, Edge Type, Mezzanine (Board to Board)
Manufacturer Name	Samtec Inc.
Connector Type	Header, Outer Shroud Contacts
Contact Finish	Gold
Contact Finish Thickness	10.0µin (0.25µm)
Contact Material	Phosphor Bronze
Contact Option	A
Current Rating (Nominal @ 1 ground plane powered)	15.7 A
Current Rating (Nominal @ 2 Pins Powered)	2.6 A
Failure Rate	QMS
Features	Board Guide, Ground Bus (Plane)
Ground Plane Material	Phosphor Bronze
Halogen Free	Yes
Height Above Board	5.76mm (0.227")
Insulator Material	Liquid Crystal Polymer
Lead Coplanarity	0.10 mm (0.004")
Lead Spacing	0.64 mm
Lead Style	Smd
Lead-Free Solderable	Yes
Mated Stacking Heights	10mm, 12mm
Mounting Type	Surface Mount
Number of Positions	52
Number of Rows	2
Operating Temperature Range	-55°C to +125°C
Packaging Type	Tray (56 parts per package)
Pitch	0.64mm (0.025")
Plating	Au over 50 µ" Ni (1.27 µm)
Plating Option	L
Protocol Capability	25 Gbps NRZ
SVHC Present	Not Present
Tape & Reel	Yes
Tape & Reel Option	Available
Type	D
Voltage Rating	300 VAC