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Resettable Overheat Protectors for USB Type-C Connectors & Batteries | China Suppliers & Factory
Small Battery Protector (SBP)
Product Description:
USB Type-C connectors have been increasingly widely used in smartphones, Tablet PCs, notebooks, power banks, smart wearables, and other devices. Users benefit from its thin shape, up to 100W power transmission, and support for forward and reverse plug — but connector overheating often occurs easily in use, leading to smoke or even burning. For example, once foreign bodies such as metal shavings, water stains, or hair enter the connector's narrow needle design, they can cause Vbus and GND to form a micro-short circuit. Therefore, Type-C overheat protection becomes very necessary. Lucky Pioneer has launched both SBP and PPTC overheating protection solutions.
★ Product Characteristics
- Accurate temperature protection
- Thousands of protection cycles
- Compatible with 100W power circuits
Electric Transient Current Protection Components (PPTC)
Product Description:
PPTC products are a kind of electric transient current protection component, widely used in telecommunications, consumer electronics, computers, multimedia, batteries, industrial, and automotive industries. PPTC products are connected in series in the circuit. When an unusually large current occurs, the heat generated by the PPTC product increases sharply, limiting the circuit current to a minimum level in a short time — avoiding damage to other components and preventing dangerous situations. The protection effect is close to a one-time melting fuse, but with self-recovery characteristics. Once the abnormal circuit condition is resolved, the PPTC product's resistance returns to its initial level in a short period of time, restoring the circuit to normal operation.
★ Product Characteristics
- Compact product design
- Ultra-low resistance
- Over-temperature & over-current dual protection
💬 Frequently Asked Questions
Q
What is the main difference between SBP and PPTC protection solutions?
A
The SBP (Small Battery Protector) is primarily designed for temperature-based overheat protection in USB Type-C connectors, while PPTC (Electric Transient Current Protection Components) focuses on transient overcurrent and over-temperature protection by limiting circuit current when an abnormal surge occurs. Both solutions are complementary and can be used together for comprehensive protection.
Q
What devices are compatible with the SBP solution?
A
The SBP solution is compatible with a wide range of devices that use USB Type-C connectors, including smartphones, tablet PCs, notebooks, power banks, and smart wearable devices. It supports circuits up to 100W, making it suitable for modern high-power charging applications.
Q
How does PPTC recover after a fault condition?
A
Once the abnormal circuit condition — such as an overcurrent or short circuit — is resolved, the PPTC component's internal resistance automatically returns to its initial low level within a short period of time. This self-recovery characteristic means the circuit is restored to normal operation without needing to replace any component, unlike a traditional one-time fuse.
Q
What causes USB Type-C connector overheating, and how does SBP address it?
A
Overheating in USB Type-C connectors is commonly caused by foreign bodies such as metal shavings, water stains, or hair entering the narrow connector pins, which can create a micro-short circuit between Vbus and GND. The SBP solution provides accurate temperature monitoring and protection, triggering a response before heat damage or fire risk occurs, and can sustain thousands of protection cycles.
Q
In which industries are PPTC components commonly used?
A
PPTC components are widely used across multiple industries, including telecommunications, consumer electronics, computers, multimedia devices, battery systems, industrial equipment, and the automotive industry. Their compact size, ultra-low resistance, and dual over-temperature and over-current protection make them a versatile choice for circuit protection.
Q
Can SBP and PPTC be used together in the same circuit?
A
Yes. Lucky Pioneer has specifically developed both the SBP and PPTC as complementary overheating protection solutions. Using them together provides a more robust, multi-layer protection strategy — combining precise temperature-based protection from SBP with the transient overcurrent and self-recovery capabilities of PPTC — ensuring maximum safety for USB Type-C and other high-power applications.