Customize Board-to-Board Connector 0.8mm Pitch 40p 2*20p Male Connector SMT Mating Stack Height PCB Header Connector
Product Highlights
- Blind Mating / Self-Alignment & Anti-reverse Key Design: Built-in guiding ribs & foolproof notch, absorbs assembly offset, prevents wrong polarity insertion; allows blind mating during automated PCB stacking, reduces assembly scrap.
- High-Speed Signal Integrity: Optimized contact geometry, controlled differential impedance, supports high-speed serial signal transmission for display, sensor, and compact computing modules.
- Defined Mated Stack Height: Fixed stacking height after mating, precise PCB gap control, consistent mechanical dimensions for stacked board design.
- 0.8mm Pitch 2*20p Dual Row Layout: 40 positions high density, SMT male header, compact footprint to save PCB space.
Product Description
| Category |
Item |
Specification |
| Electrical Performance |
Current Rating |
0.5A per contact |
|
Voltage Rating |
100V DC |
|
Contact Resistance |
≤20mΩ |
|
Insulation Resistance |
≥500MΩ @500V DC |
|
Dielectric Withstanding Voltage |
500V AC, 1min, no breakdown |
| Mechanical Performance |
Pitch |
0.8mm |
|
Pin Count |
40p, 2*20p dual row |
|
Mating Cycles |
50 cycles minimum |
|
Mated Stack Height |
Custom-defined mated height |
|
Mating / Unmating Force |
Low insertion force, stable retention force |
| Material & Plating |
Housing |
High-temperature thermoplastic, UL94 V-0 |
|
Contact Material |
Phosphor bronze / Copper alloy |
|
Contact Plating |
Selective gold plating on mating area, nickel barrier underplate; solder tail tin plating |
| Environment |
Operating Temperature |
-40℃ ~ +85℃ |
|
Compliance |
RoHS, REACH |
| Soldering Guide |
Mount Type |
SMT Surface Mount |
|
Reflow Profile |
Pb-free reflow, peak temp ≤260℃, dwell time at peak ≤30s |
|
Hand Soldering |
Max 350℃, ≤5s per pin |
Cross‑Reference / Alternative
Drop-in alternative for equivalent 0.8mm pitch 40pin BTB male header series from Molex, JAE, Hirose, ACES.
- Same footprint, pin assignment, and stacking height as the reference series upon confirmation.
- Our engineering team can verify PCB footprint compatibility and provide a dimensional drawing for your layout check.
- No need for major PCB redesign for substitution; lower lead time and total cost vs imported parts.




Product Feature
- SMT male header, dual row 2×20p, 0.8mm fine pitch.
- Foolproof anti-dummy key + self-align guide for blind mating, avoids pin damage during assembly.
- High-temp housing, stable after reflow soldering, no warpage.
- Selective gold plating for reliable contact and oxidation resistance.
- Consistent stack height, good mechanical stability under vibration & shock.
- Customizable: adjust mated height, gold thickness, housing color, add locating posts.




Product Advantages
- Assembly Friendly: Self-alignment guides tolerate minor board offset, reducing manual/automated mating failure rate.
- High Signal Reliability: Tuned contact structure maintains signal integrity for high-speed interfaces.
- SMT Ready: Tape & reel packaging for direct pick-and-place on your existing SMT line.
- Cost & Supply Stability: Local precision factory, shorter lead time than overseas brands; free samples for validation.
- Engineering Support: Datasheet, 2D/3D STEP files, footprint recommendation available for your hardware design.
Application
- Display module, camera sensor board connection
- IoT control board, wearable electronics
- Medical compact PCB modules
- Industrial handheld devices, POS terminals
- Robotics sensor sub-board, stacked PCB assemblies
- Communication small form-factor modules

Packaging
Tape & Reel (Reel packaging): Standard reel packaging for SMT pick‑and‑place machine. Parts can be directly loaded onto your automated production line without repacking. Cut‑tape service is available for small‑batch prototypes.
Lead Time
- Sample order: 3 working days
- Mass production order: 1‑3 weeks, subject to configuration & order quantity
Factory Certification & Custom Service
- Certifications: ISO9001, RoHS, REACH compliant
- Customization available: Mated stack height modification, plating thickness, locating posts, housing color, pin count change, OEM marking.
- Sample Policy: Support free samples, fast sample output.
- MOQ: Low MOQ for standard items; custom tooling MOQ to be confirmed by engineering.
- We provide pre-sales engineering review, drawing validation, and reliability test report upon request.
Engineer Selection Guidance
- Confirm required mated stack height first; this is the critical dimension for stacked PCB gap.
- Verify mating partner (female socket) series; send female part number for compatibility check.
- Define gold plating thickness based on your working environment: thicker gold for high vibration / long-life equipment.
- Confirm packaging: Reel for SMT mass production, tray only for prototype small batch.
- Submit PCB layout drawing or 3D model; our engineer can check interference and mating clearance before you place an order.
- Always run electrical & mating validation with free samples before mass production
FAQ
Q: Do you have a catalogue? Can you send me the catalogue to check all your products?
A: Yes, you can contact us online or send an Email to get the catalogue.
Q: I can't find the product in your catalogue. Can you make this product for me?
A: Our catalogue shows most of our products, but not all. Just let us know what product you need and how many you want. If we do not have it, we can also design and make a new mould to produce it. For your reference, making an ordinary mould will take about 35-45 days.
Q: Can you provide a sample? Are these samples free?
A: Yes, we provide 5-10 pcs of connector free samples for testing. But you have to pay the shipping cost
Q: What about your delivery time?
A: Stock goods are delivered within 1 day; customized goods are delivered within 5-7days
Q: How to ship my order?
A: For small packages, send them by Express, such as DHL, FedEx, UPS, TNT, EMS. That's Door-to-Door service. For big packages, we can send them by Air or by sea. We use standard export cartons. We will be responsible for any product damage caused during delivery.
6. Q: What kind of payment do you accept? Can I pay RMB?
A: Weaccept T/T(Wire transfer), Western Union, and PayPal. Please be sure that we can receive the same amount as the Invoice. And you can pay money in RMB. No problem.
7. Q: How about your company's quality control
A: Strictly follow ISO9001; IQC, OQC, IPQC, and QA occupy 10% of our Quality department. The CCD test is applied to 99% of our company's product applications.
Q: I need your price list of all your products. Do you have a price list?
A: We do not have a price list of all of our products. Because we have so many items, it's impossible to make all of their prices on a list, and the prices are always changing because of the material cost and quantity. And you can give us a list of all of the items you need; we will confirm carefully one by one and give you a specification and price list
Q: Can you make customized products and customized packing?
A: Yes. We have made a lot of customized
products for our customers before (mainly wire harnesses). About customized packing, there is no problem; we can put your logo or other information on the packing. Just have to point out that it will cause some additional cost.
Q: What certificates do you have?
A: CE, CQC, UL, ISO9001, ISO14001, IATF16949, ISO45001, QC080000, etc.