This is a DC/DC-converter with 5V output voltage
It can be used (as a replacement for the fixed voltage pin-compatible 7805)
There is no heatsink is necessary.
Technical data according to the manufacturer
- output voltage: 5 V / DC
- Output current: 1 A
- Efficiency: max. 94%
- Type: R-785.0-1.0
- Pitch: 2.54 mm
- Input Voltage: 6.5 - 18 V / DC
- Material: UL94-VO