MORNSUN K78 series are non-isolated regulators known for compact size, high-efficiency and compatible with traditional LM78xx linear regulators. New SMD packaged K78_T-500R3/K78_T-1000R3 series are introduced to meet the reflow soldering production requirements.

The peak temperature of reflow soldering is Tc≤245 ℃ and keeps 60s (Max.) above 217°C, which meets the IPC/JEDEC J-STD-020D.1 standard. Dimension is 15.24mm x 11.40mm x 8.25mm (about 0.6in x 0.45in x 0.32in). Efficiency is up to 95% and operating temperature ranges from -40°C to 85°C, without additional heat sink.

Besides, these K78_T-R3 series also provide a wide input voltage range (4.75-36V), continuous short-circuit protection, adjustable output voltage (±10%) and remote voltage control and so on, which can be widely used in industrial control, grid power, instrumentation, mining and other related industries.


  • SMD package
  • High efficiency up to 95%
  • No-load input current as low as 0.2mA
  • Operating temperature range: -40°C to +85°C
  • Output short circuit protection
  • Meet UL62368, EN62368,IEC62368 (pending)