The 2SC2553 is a Material of Transistor-Si Polarity: NPN Maximum Collector Power Dissipation 40W Maximum Collector-Base Voltage 500V Maximum Collector-Emitter Voltage 400V Maximum Emitter-Base Voltage 7V Maximum Collector Current 5A Max.
This is Boost Module With Digital Display which is a high-performance step-up switching current module. The XL6009 DC-DC 4.5-32V to 5V-35V XL6009 Boost Step-up Module Adjustable Digital Voltmeter.