The high-current board-to-board connector is a key component in modern electronics. It balances ultra-fine pitch, high current capacity, and strong reliability. Today’s devices demand smaller form factors while delivering more power. This connector meets both critical requirements.
Core Application Fields
Consumer Electronics
Smartphones, tablets, and TWS earbuds use board-to-board connectors to link the mainboard to the battery module. They enable efficient power transfer and fast charging. Their small footprint also fits slim wearables like smartwatches and VR headsets, where space is extremely limited.
Industrial & Automotive Systems
Industrial sensors and robotics need stable power under vibration and temperature swings. In electric vehicles, the connector supports battery management systems and meets strict safety standards such as AEC-Q and USCAR.
Medical Technology
Patient monitors and portable diagnostic tools use the connector for compact, handheld designs. Reliable power delivery is critical in healthcare settings, and this connector ensures consistent performance under repeated sterilization cycles.
Drones & High-Performance Portable Tech
Drones require strong power for motors and avionics, and the connector handles high currents without overheating. Its small size also helps reduce weight, boosting flight efficiency and endurance.
Technical Specifications
| Parameter | Specification |
|---|---|
| Pitch | 0.4 mm |
| Current Rating | Up to 5A per pin |
| Contact Resistance | < 50 mΩ |
| Mating Cycles | 1,000+ cycles |
| Operating Temp | -40°C to +125°C |
| Mounting Type | SMT (Surface Mount Technology) |
| Housing Material | High-temp flame-retardant plastic (UL94 V-0) |
| Contact Plating | Gold-plated / Tin-plated options |
| Compliance | RoHS / REACH |
Key Reliability Features
Mechanical Durability
The connector has a robust structure that absorbs stress, shock, and vibration. Reinforced housings and dual-contact terminals ensure stable connections. It is rated for over 1,000 mating cycles.
Electrical Performance
Special terminals carry high currents with low resistance. This reduces heat and supports fast-charging protocols. It ensures stable power flow without energy loss, making it ideal for high-current board-to-board applications in space-constrained devices.
Environmental Resilience
It uses high-temperature, flame-retardant plastic and corrosion-resistant contacts. It works reliably in temperatures from -40°C to +125°C. It resists oxidation, humidity, and thermal cycling.
Manufacturing Compatibility
Designed for automated SMT assembly, it includes features to prevent solder wicking and tombstoning. This guarantees consistent quality in high-volume production.
Frequently Asked Questions
What is a high-current board-to-board connector?
A high-current board-to-board connector is a compact connector designed to carry elevated current levels (up to 5A per pin) between two PCBs. It combines a small footprint with robust power delivery, making it ideal for battery connections in portable devices, wearables, and industrial electronics.
What pitch sizes are available for board-to-board battery connectors?
Common pitch sizes include 0.4mm for ultra-compact designs and 2.0mm for higher-current applications in larger devices. The 0.4mm pitch is ideal for smartphones, tablets, and wearables where PCB space is at a premium.
What is the operating temperature range?
The high-current board-to-board connector operates reliably from -40°C to +125°C, making it suitable for automotive, industrial, and outdoor applications with extreme temperature variations.
Can I get samples for prototyping?
Yes, Longyueda offers engineering samples for qualified projects. Contact our team with your application requirements, target pitch, and current specifications for a customized quotation.
Conclusion
In summary, the high-current board-to-board connector is a versatile solution that excels at the intersection of miniaturization and high power delivery. Consumer, industrial, automotive, and medical applications all rely on its performance. As electronics continue to shrink while demanding more power, this connector remains essential.
⚡ Download B-to-B Connector Datasheet & Request Samples →
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