BG200B12UY4-I Limit sensor

Technical SpecificationsThe  features a 62mm standard half-bridge package configuration with the following core electronic ratings: 

• Collector-Emitter Voltage (\(V_{CES}\)): 1200V
• Continuous Collector Current (\(I_{C}\)): 200A
• Structure: Advanced IGBT chip paired with a Free-Wheeling Diode (FWD/FRD).
• Key Attributes: Low conduction/switching losses and high short-circuit capability. 

Common ApplicationsThis module is typically used for heavy-duty electrical switching and power inversion, such as:

• Industrial motor drives and inverters
• Induction heating and inverter welding equipment
• Uninterruptible Power Supplies (UPS) 

Why are you seeing a "Limit" warning?If your system is throwing a limit sensor error or tripping a safety fault related to this component, it usually means: 

1. Over-Current / Over-Temperature: The system's actual current or thermal limit sensors are triggering because the IGBT is running too hot or pulling more than 200A. 
2. Desaturation Fault: Many modern IGBT gate drivers feature an internal "desaturation" monitor that acts as a limit sensor to shut the system down instantly if a short circuit occurs.