Board to Board Connector Compatible with DF40HC(4.0)-20DS-0.4 -0.4mm Pitch Double Row BTB Female
Product Highlights
✅ Blind Mating & Self-Alignment: Guide ribs provide ±0.33mm XY floating tolerance, absorb PCB assembly offset, avoids pin damage during blind docking
✅ High-Speed Signal Performance: Supports up to 20Gbps, fully compliant with MIPI, USB3.1 Gen2, PCIe signal transmission
✅ Fixed Mated Height: 4.0mm: Precise stack height control for controlled PCB gap, stable multi-board mechanical design
✅ SMT Tape & Reel Packaging: Directly compatible with automatic pick-and-place machines for mass production
✅ Anti-Solder Wicking Barrier: Nickel barrier prevents solder creep onto the contact area, improves soldering yield
Product Description
| Category |
Item |
Spec |
| Electrical |
Pitch |
0.4 mm |
|
Pin Count / Rows |
20 pins, double row |
|
Rated Current per Contact |
0.3 A |
|
Rated Voltage |
30 V DC |
|
Contact Resistance |
≤30 mΩ |
|
Insulation Resistance |
≥500 MΩ @ 500V DC |
|
Withstanding Voltage |
250V AC for 1 min |
| Mechanical |
Mated Height |
4.0 mm |
|
Self-alignment Range |
±0.33 mm X / Y axis |
|
Mating Cycles |
30 cycles minimum |
|
Mounting Type |
SMT surface mount |
| Material & Plating |
Housing |
LCP, UL94 V-0 |
|
Contact Material |
Phosphor Bronze |
|
Mating Area Plating |
Gold plating (0.2μm) over nickel barrier |
|
Terminal Plating |
Tin over nickel |
| Environment |
Operating Temp |
-35℃ ~ +85℃ |
|
Compliance |
RoHS, REACH |
| Soldering Guide |
Reflow Profile |
Standard SMT reflow, peak temp ≤260℃, 10s max |
Cross‑Reference / Alternative
This BTB female receptacle is pin-to-pin, footprint compatible with Hirose DF40HC(4.0)-20DS-0.4V(51). Engineers can use it as a drop-in alternative for prototype validation and mass production. Same PCB footprint, same mating interface, no PCB redesign required.
Differentiation note: Factory direct supply, shorter lead time, flexible MOQ, stable long-term supply to avoid international brand shortage & price fluctuation.
Product Feature
- Built-in polarizing Fool-proofing key, prevents reverse mating and pin crush
- Shock-absorbing reinforcement ribs on both sides, absorb mechanical stress during assembly & vibration
- Enclosed contact structure when mated, dust & contamination protection
- Clear tactile click feedback when fully mated, easy assembly inspection
- Sufficient vacuum pick-up area for stable SMT placement
Product Advantages
- Drop-in replacement: No layout change needed for projects originally using Hirose DF40 series
- High-yield design: Anti-solder-wicking nickel barrier reduces soldering reject rate
- Supply stability: Domestic precision connector factory, not subject to overseas brand stock outages
- Fast engineering support: Free samples for hardware validation; quick drawing & DFM support
- Cost optimized: Factory wholesale price, better total BOM cost for medium & high volume
Application
- Handheld smart devices, display modules
- Camera modules, MIPI signal interconnection
- Medical portable electronics
- IoT devices, sensor modules
- Industrial small control boards
- Notebook/tablet auxiliary PCB stacking
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
- MOQ: Low MOQ for standard parts
- Sample Policy: Support free samples; customer only bears freight cost; fast sample release
- Customization: Custom pin count, stack height, plating thickness, housing color available upon request. Send your PCB drawing for engineering review.
Engineer Selection Guidance
- Confirm required mated height: this model = 4.0mm stack height
- Verify PCB footprint matches DF40HC series before layout freeze
- For high vibration applications, confirm locking & mechanical retention requirement
- High-speed signal (≥10Gbps): impedance control simulation available upon request
- Submit your pin count, stack height, temp requirement to our engineer for alternative part recommendation if needed
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.
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