過壓保護器件之一瞬變TVS二極管，是一種高效限壓型保護器件，反應速度快（PS級）、瞬態功率大、鉗位電壓易控制、擊穿電壓偏差小、小體積、高可靠性，廣泛應用于汽車電子、智能家居、照明、儀器儀表、消費電子、辦公用品、醫療器械、新能源領域等等。在10/1000us下，瞬變TVS二極管功率能從200W做到30000W，甚至更高；工作電壓低至3.3V，高達600V，甚至更高；封裝多樣，有貼片和直插之分。那么，工作電壓150V，功率5000W，SMC封裝的瞬變TVS二極管，有哪些型號呢？

查看東沃電子瞬變TVS二極管產品選型手冊可知，能滿足“工作電壓150V、功率5000W、SMC封裝”這三個條件的瞬變TVS二極管型號有：5.0SMDJ150A、5.0SMDJ150CA，其參數詳情如下：

最小擊穿電壓Breakdown Voltage：167.00V

最大擊穿電壓Breakdown Voltage：185.00V

最大反向電流Maximum Reverse Leakage：5uA

工作電壓Working Peak Reverse Voltage：150.00V

峰值脈沖電流Maximum Reverse Surge Current：20.58A

最大鉗位電壓Maximum Clamping Voltage：243.00V

峰值脈沖功率Peak Pulse Power：5000W

封裝Package：SMC (DO-214AB)

絲印標識Marking Code：5PHM (5.0SMDJ150A), 5BHM (5.0SMDJ150CA)

通過對比發現，瞬變TVS二極管5.0SMDJ150A和5.0SMDJ150CA區別在于前者是單向，后者是雙向，在應用方面也有差異，其它參數都是一樣的。一般而言，在直流電路中，選用單向瞬變TVS二極管，在交流電路中，選用雙向瞬變TVS二極管，具體的話，建議咨詢東沃電子產品工程師！

單向TVS管5.0SMDJ150A和雙向TVS管5.0SMDJ150CA屬于5.0SMDJ系列型號之一，該系列下型號還有：

1）單向瞬變TVS二極管：5.0SMDJ11A、5.0SMDJ12A、5.0SMDJ13A、5.0SMDJ14A、5.0SMDJ15A、5.0SMDJ16A、5.0SMDJ17A、5.0SMDJ18A、5.0SMDJ19A、5.0SMDJ20A、5.0SMDJ22A、5.0SMDJ24A、5.0SMDJ26A、5.0SMDJ28A、5.0SMDJ30A、5.0SMDJ33A、5.0SMDJ36A、5.0SMDJ40A、5.0SMDJ43A、5.0SMDJ45A、5.0SMDJ48A、5.0SMDJ51A、5.0SMDJ54A、5.0SMDJ58A、5.0SMDJ60A、5.0SMDJ64A、5.0SMDJ70A、5.0SMDJ75A、5.0SMDJ78A、5.0SMDJ80A、5.0SMDJ85A、5.0SMDJ90A、5.0SMDJ100A、5.0SMDJ110A、5.0SMDJ120A、5.0SMDJ130A、5.0SMDJ140A、5.0SMDJ150A、5.0SMDJ160A、5.0SMDJ170A、5.0SMDJ180A、5.0SMDJ190A、5.0SMDJ200A、5.0SMDJ220A、5.0SMDJ250A、5.0SMDJ300A、5.0SMDJ350A、5.0SMDJ400A、5.0SMDJ440A；

雙向瞬變TVS二極管：5.0SMDJ11CA、5.0SMDJ12CA、5.0SMDJ13CA、5.0SMDJ14CA、5.0SMDJ15CA、5.0SMDJ16CA、5.0SMDJ17CA、5.0SMDJ18CA、5.0SMDJ19CA、5.0SMDJ20CA、5.0SMDJ22CA、5.0SMDJ24CA、5.0SMDJ26CA、5.0SMDJ28CA、5.0SMDJ30CA、5.0SMDJ33CA、5.0SMDJ36CA、5.0SMDJ40CA、5.0SMDJ43CA、5.0SMDJ45CA、5.0SMDJ48CA、5.0SMDJ51CA、5.0SMDJ54CA、5.0SMDJ58CA、5.0SMDJ60CA、5.0SMDJ64CA、5.0SMDJ70CA、5.0SMDJ75CA、5.0SMDJ78CA、5.0SMDJ80CA、5.0SMDJ85CA、5.0SMDJ90CA、5.0SMDJ100CA、5.0SMDJ110CA、5.0SMDJ120CA、5.0SMDJ130CA、5.0SMDJ140CA、5.0SMDJ150CA、5.0SMDJ160CA、5.0SMDJ170CA、5.0SMDJ180CA、5.0SMDJ190CA、5.0SMDJ200CA、5.0SMDJ220CA、5.0SMDJ250CA、5.0SMDJ300CA、5.0SMDJ350CA、5.0SMDJ400CA、5.0SMDJ440CA；