Hi-Link HLK-20M05 5V 20W AC-DC Power Converter (AC to DC Switch Power Supply Module)The HLK 20M05 5V 20W Switch Power Supply Module is a PCB mounted isolated switching step down power supply module with a plastic enclosure. It has a power rating of 20 Watt and can supply 5V DC from 100V AC to 240V AC. This makes it ideal for small circuits that require a 5 volts power supply. These modules have a number of advantages, including low temperature increase, low power, high efficiency, high reliability, high security isolation, and so on

2 meters drop test

allowing all current to flow through the circuit but not through the MOV

2-3A Efficiency 80% Number of Pins 5 Fixed Output Voltage 5V Switching Frequency 150 kHz Package TO-263(S) Mounting Type SMD

The PMBT3904 NPN transistor is packaged in a tiny SOT-23 package

Model A7860 Brand Awago Operating Supply Voltage  5V Minimum Operating Temperature - 40° C Maximum Operating Temperature +85° C Maximum Clock Frequency 13

This copper sleeve strengthens the barrel and provides a robust and secure crimp

These are Carbon Film Resistor with a value of 24k ohm 1/8W and tolerance of ±5%

Model RT-85C Brand Meanwell DC Voltage (through three voltage channel) +5V(V1)

3M resistors

Junction Temperature 175°C Pd - Power Dissipation 200 W

Resistance 120 ohm (1200) Brand Resistor Chip size 0805 Tolerance 1% Power 1/8W Temperature Range -55°C to +125°C Mounting Type Surface mount No

Reset (RST/NRST)