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瞬態電壓抑制器是一種能夠在電路中保護電子設備免受電壓過高的影響的元器件。其主要原理是基于二極管的正反向導通特性，在一定電壓范圍內能夠迅速響應并消耗過高的電壓脈沖，從而降低電路中的電壓峰值，保護后續設備不被高壓電擊傷害。
瞬態電壓抑制器的主要特點如下：
1. 可以對各種電壓峰值和脈沖寬度的過電壓進行抑制。
2. 可以快速響應，對瞬態過電壓進行保護，保證了電路的安全性和穩定性。
3. 采用高靈敏度材料制作，具有低漏電流和低工作電壓的特點。
4. 長期穩定可靠，使用壽命長。
The Gaia Converter LGDSI-75 Series designates an active power front end module designed to compley protect electronic systems. It embeds spike/transient suppression, EMI filtering, reverse polarity protection and inhibit functions as needed in typical Railway & high end Industrial products.
The LGDSI-75 delivers an adapted output voltage compliant with Gaia Converter DC/DC range of modules. This line of module is optimized to provide high efficiency up to 98% over the whole power range between 4W and 75W power.
Model:LGDSI75系列瞬態電壓抑制器 LGDSI75-Q-K
Gaia's LGDSI-75 Industrial Grade offer operating temperature ranges of -40 to +95°C with input ranges typically required for Transportation / OEM / Industrial applications:LGDSI75系列瞬態電壓抑制器 LGDSI75-Q-K
LGDSI-75-Q-K :43-154 Vdc permanent; 165 Vdc / 1 s & 176 Vdc / 100 ms transients; 1.8kV / 50 μs spikes
The LGDSI-75 features 2 modes of operations as follow :
Normal operation: Normal operation occurs when input bus line is in steady state permanent range. The LGDSI-75 is then operating in steady transparency state providing an output with a typical 1,5V drop-out voltage.
Transient and spikes operation: The LGDSI-75 can sustain both:
- transient during 1s according or EN50155 requirements
- high spike levels up to 1.8kV with 5 Ohms impedance and 8.4kV with 100 Ohms impedance to meet input bus standards of EN50155.
LGDSI75系列 LGDSI75-Q-K