小型斷路器（微型熱保護器）

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 等熱熔斷器 (TCO) 設備被用作安全措施，可有效防止過電流產生的熱量和火災，尤其是在鋰離子電池中。 這些產品用於保護筆記本電腦、個人電腦、平板電腦、數碼相機和智能手機等電子設備中的電池。
微型斷路器的跳閘溫度是電池組的一個關鍵參數，它的設計能夠以特定的跳閘溫度值為目標。
該組件擁有 UL 和 TÜV 安全標準認證，並在全球範圍內採用環保措施。 Bourns® 小型斷路器是自保裝置，旨在在異常溫度下保持跳閘（操作），然後在電源關閉且溫度恢復到安全水平時恢復。 與用於相同應用的聚合物 PTC 和溫度保險絲相比，這可以在較低溫度下提供保護。

熱熔斷器 (TCO) 設備 - 也稱為小型斷路器 - 為 USB Type-C 電纜提供有效的過熱保護解決方案。 這些 TCO 設備以這樣一種方式整合了現有技術，以增強其保護能力。 TCO 器件由雙金屬盤和陶瓷 PTC 並聯構成。 USB 連接器的過熱導致雙金屬片在非常準確的溫度下打開。 一旦打開，電流就會通過 PTC，PTC 會產生足夠的熱量來保持雙金屬片打開並防止滋擾復位。
了解對溫度傳感能力和雙金屬開關低電阻的需求，Bourns 將這些額外優勢設計到混合 TCO 器件中，該器件可在多個溫度範圍內使用，並具有 100% 的跳閘溫度在線檢測。

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

應用

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

優勢

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

相關產品/解決方案

• USB Type C cable