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12V系統車燈浪湧防護方案設計圖：

從圖中的防護方案可以看出，電路中選用了壹顆TVS二極管SM8S24A，反應速度快、殘壓低、共差模防護，滿足ISO7637-2 surge specification。SM8S24A是壹種高效型的電路保護器件，常用於汽車電子產品之中。汽車級TVS二極管SM8S24A特性：
• Optimized glass passivated chip
• Case: DO-218AB
• TJ = 175 °C capability suitable for high reliability and automotive requirement
• 6600 W peak pulse power capability with a 10/1000 μs waveform, repetitive rate (duty cycle):0.01 %
• Meet ISO 7637-2 5a/5b and ISO 16750 load dump test (varied by test condition)
• AEC-Q101 qualified
• Low leakage current
• Low forward voltage drop
• Very fast response time
• RoHS compliant
• Excellent clamping capability

想了解更多有關汽車車燈浪湧防護方案及電路保護器件選型，歡迎各位前來與東沃技術溝通交流：138 5774 8594（微信同號）陳工！