小型断路器（微型热保护器）

Thermal Cutoff (TCO) devices, such as Bourns® Mini-Breakers, are utilized as safety measures to help prevent heat and fires produced by excess current, most notably in lithium-ion batteries. These products are used to safeguard batteries in electronic devices such as notebooks, PCs, tablets, digital cameras, and smartphones.

The trip temperature of the mini-breaker is a critical parameter for battery packs, and it is designed with the ability to target certain trip temperature values. The component has UL and TÜV safety standard certifications and also uses environmental protection measures all around the globe. Bourns® Mini-Breakers are self-preserving devices that are intended to remain tripped (operated) at abnormal temperatures and then recover when power is turned off and the temperature returns to a safe level. When compared to polymer PTCs and temperature fuses used for the same applications, this enables protection at lower temperatures.

Bourns® Mini-Breakers 等热熔断器 (TCO) 设备被用作安全措施，可有效防止过电流产生的热量和火灾，尤其是在锂离子电池中。 这些产品用于保护笔记本计算机、个人计算机、平板计算机、数码相机和智能手机等电子设备中的电池。
微型断路器的跳闸温度是电池组的一个关键参数，它的设计能够以特定的跳闸温度值为目标。
该组件拥有 UL 和 TÜV 安全标准认证，并在全球范围内采用环保措施。 Bourns® 小型断路器是自保装置，旨在在异常温度下保持跳闸（操作），然后在电源关闭且温度恢复到安全水平时恢复。 与用于相同应用的聚合物 PTC 和温度保险丝相比，这可以在较低温度下提供保护。

热熔断器 (TCO) 设备 - 也称为小型断路器 - 为 USB Type-C 电缆提供有效的过热保护解决方案。 这些 TCO 设备以这样一种方式整合了现有技术，以增强其保护能力。 TCO 器件由双金属盘和陶瓷 PTC 并联构成。 USB 连接器的过热导致双金属片在非常准确的温度下打开。 一旦打开，电流就会通过 PTC，PTC 会产生足够的热量来保持双金属片打开并防止滋扰复位。
了解对温度传感能力和双金属开关低电阻的需求，Bourns 将这些额外优势设计到混合 TCO 器件中，该器件可在多个温度范围内使用，并具有 100% 的跳闸温度在线检测。

特色

• Miniature Thermal Cutoff (TCO) device
• Surface mount, smallest body size
• Overtemperature and overcurrent protection
• Controls abnormal, excessive current virtually instantaneously, up to rated limits
• Wide range of temperature options
• High corrosion resistance

应用

Battery cell protection for:

• Notebook PCs
• Tablet PCs
• Smart phones

Overtemperature protection for:

• USB Type C cables (e.g. smart phone cables, notebook AC adapters)
• Electronic cigarettes
• Medical heaters

主要元件

• Bourns® SC Series Miniature Resettable Thermal Cutoff (TCO)Device
• Bourns® AC Series Miniature ResettableThermal Cutoff (TCO) Device

优势

• Bourns’ broad line of Mini-breaker TCO products have been usedin more than six billion circuits, providing precise, reliable, long-life overtemperature protection.

相关产品/解决方案

• USB Type C cable