1. 車規級TVS的應用

2.車規級TVS系列表格如下

3.方案推薦

12V汽車電源浪涌保護方案

方案優點：用于滿足前裝汽車的ISO7637-2 5A5BA測試，可采用單獨大功率的TVS或PTC+TVS的組合方案，滿足ISO10605-2，

等級4，接觸放電15KV，空氣放電25KV。

24V汽車電源浪涌保護方案

方案優點：用于滿足前裝汽車的ISO7637-2 5A5BA測試，可采用單獨大功率的TVS或PTC+TVS的組合方案，滿足ISO10605-2，

等級4，接觸放電15KV，空氣放電25KV。

4.雷卯替代同行業品牌

上海雷卯電子科技有限公司，成立于2011年，品牌Leiditech，是國家高新技術企業。公司研發團隊由留美博士和TI原開發經理組建，憑借技術精湛的研發隊伍和經驗豐富的電磁兼容行業專家，主要提供防靜電TVS/ESD以及相關EMC元器件（放電管TSS/GDT、穩壓管ZENER、壓敏電阻MOV、整流二極管RECTIFIER、自恢復保險絲PPTC、場效應管MOSFET、電感）。

Leiditech圍繞EMC電磁兼容服務客戶，自建免費實驗室為客戶測試靜電ESD（30KV）、群脈沖EFT(4KV)、浪涌（8/20，10/700 10/1000）、汽車拋負載（7637 5a/5b）和元器件的性能測試等。Leiditech緊跟國內外技術更新脈搏，不斷創新EMC保護方案和相關器件，目標方向為小封裝，大功率，為國產化替代提供可信賴方案和元器件。

表格信息：

產品信息：Information of TVS

The transient Voltage Suppressor, referred to as TVS, the TVS operates by shunting excess current when the induced voltage exceeds the avalanche breakdown potential. It is a clamping device, suppressing all over voltages above its breakdown voltage. It automatically resets when the overvoltage goes away, but absorbs much more of the transient energy internally than a similarly rated crowbar device.

The selection tips of TVS

1. The Vrwm of TVS should be more than 10% working voltage and tolerance, that protect the Max DC or continuous working voltage of circuits. If the Vrwm is too low, the device will affect the normal work of the circuits because of the snow slide or reverse electric leakage. The current will be divided in the parallel circuit and the voltage will be divided in the serial circuit.

2. The VC of TVS should be less than the damaged voltage of protecting circuits.

3. The Ppp of TVS should be more than the possible peak pulse of protecting circuits.

4. The Ipp of TVS should be more than the surge current of transient circuit.

5. For the lightning protection of data interface circuit, the semiconductor ESD of low capacitance is better.

6. The selection of TVS’ polarity and encapsulation structure should based the application. For the AC circuit, the dual polarity TVS is better, and for the Multi-line protection, the ESD array of semiconductor is better.