Product Specification

2.54mm Triple-Row (3×n) Straight Male Pin Header with Spacer – THT PCB Mount, Gold Flash over Nickel, for Telecom Backplane & Data Server PCB

Product Description

Overview

The 2.54mm Triple-Row Straight Male Pin Header with Spacer​ packs three parallel rows of Ø0.64mm brass square pins into a black PBT UL94 V-0 insulator, 180° through-hole, gold-flashed over nickel on the mating zone, with a built-in 2.5–3.0mm spacer base​ that holds the header off the PCB for consistent pin engagement and easy wave-solder drain. Supplied as breakable 3×n stick (3×20 = 60-pin default for server riser; 3×39 for 117-pin telemetry backplane like Kinghelm KH-2.54PH180-3X39P).

It is the high-density sibling of the 2×n header: same 0.1" grid, 50% more pins per unit length, used where signal/power/ground must stay grouped​ (e.g. 1 row signal, 1 row power, 1 row GND on a 5G DU front card).

Materials (anchored to public datasheets)

• Insulator: PBT+GF black UL94 V-0 (Sunny Young R3300, 长江 A2541WVA, Wayconn PH254-3XX); PA6T option for 260℃/10s lead-free wave

• Pin: Brass C2680 Ø0.64mm square (Wayconn / Sunny Young / 长江 all specify 0.64 SQ)

• Plating: Gold flash 0.05µm over 50µ" Ni on mate zone; matte tin 2–3µm on 3.0mm tail; 30µ" selective gold​ at 500pc MOQ

• Spacer: insulator bottom face 2.5mm; optional Ø1.5mm PA peg boss for SMT-like placement accuracy

Competitive Edges 

• Triple-row 3×n is a different product class​ – most vendors only push 2×n; we hold 3×2–3×40 tooling, no NRE for count change.

• Spacer built into insulator​ – not "add a nylon washer" afterthought; mold includes standoff + peg boss, so wave solder doesn't float the header.

• 3A true + 1500V DWV option​ (长江 A2541WVA class) – telecom backplane needs higher DWV than 500V consumer grade; we offer both.

• 5–7 d sample from shelf stick​ – cut 3×20 / 3×39 from master stick, plate, ship; not 3-week tooling.

• Press-fit tail option​ – same 3×n molding with eye-of-needle tail for solderless server backplane (TE Eurocard ACTION PIN sibling).

Application Industries

• Telecom switch backplane​ – 3×20 grouped (SIG/PWR/GND) for 1U ToR line card edge

• Data server riser/mezzanine​ – 3×10 for NVMe riser card to mainboard

• 5G DU/CU fronthaul card​ – 3×39 (117-pin) telemetry + sync + management bus (Kinghelm KH-2.54PH180-3X39P use case)

• Storage array controller​ – 3×40 triple-row for drive-backplane interposer

• Industrial DCS / VME64x adjacent​ – TE Eurocard DIN41612 96pos sibling for STE Bus / Futurebus+ (TE 650470-5 class)

• Optical transport / OTN​ – 3×5 power+control header on SFP28 line card daughter

Customization Options

• Count: 3×2 / 3×5 / 3×10 / 3×20​ / 3×39 / 3×40

• Spacer: 2.5mm insulator base (default) / + peg boss / 4.3mm double-plastic

• Tail: 3.0mm (default) / 6.0mm (6T) / 11.5mm total (Kinghelm L11.5 clone) / press-fit eye-of-needle

• Insulator: PBT V-0 black (default) / PA6T / Nylon 6T / color

• Plating: gold flash / 30µ" selective​ / full tin / duplex

• Pin: brass (default) / phosphor bronze

• Orientation: straight (default) / right-angle

Step Custom Process

1. Requirement Collection → 2. Technical Evaluation & Quotation → 3. 3D Drawing Review & Confirmation → 4. Mold / Tooling & Prototype → 5. Sample Test (contact R, retention, reflow) & Approval → 6. Mass Production → 7. Final QC & Shipment.

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Our service

Sample Availability & Policy

Samples are to be sent to our customers for free on their request, so long as they are willing to pay for the freight, or we can pay the freight for some old customers from our side as well, or the customer can pay the freight in advance, and we can ship samples with our courier as well.

Guarantees/Warranties/Terms and Conditions

We provide a product quality guarantee.
A 15-day quick delivery is assured.
Payment terms include T/T, but it is subject to negotiation, such as L/C, PayPal, Western Union, and more.

After Sales Service

Excellent service is offered through our network of offices and head office.
Please contact our marketing sales department either by phone or e-mail, or if convenient, visit our office.
Aside from the friendly service, we offer the most competitive prices and flexible scheduling.

FAQ

Q: What's your MOQ?

A: Our MOQ usually comes to 1000 pcs, but we accept small order quantities for testing.

Q: Can I visit your factory?

A: Welcome to visit our factory, and we will show you our professional production process, and hoping we can have long-term cooperation with you.

Q: What's your sample time? What's your delivery time?

A:7 days for samples, and 15-20 days for mass production. It depends on the quantity.

Q: How do I inspect my goods? 

A: You can inspect by visiting the factory, or ask a third party to inspect, or by picture inspection.

Q: How much does it cost to ship to my country?

A: The freight will be given by the freight company based on your Gross Weight and CBM.

Q: How do I know if you ship out my order?

A: The tracking number(DHL, UPS, FedEx, TNT, EMS, etc.), Air Waybill, or B/L by Sea will be sent to you as soon as your goods are shipped out. We also follow up on the delivery and keep you informed. The helpful after-service is provided. We support what you sell.

Q: Can I make personalized/customized products?

 A: Sure, just send us your drawing or sample.