The 1N914UR is a general-purpose standard recovery diode from Microchip Technology, designed for small-signal switching and rectification up to 200 mA average forward current. It handles a maximum repetitive reverse voltage of 75 V, making it suited for low-voltage DC rail protection, signal clamping, and general-purpose freewheeling in control circuits. Reverse recovery time is 20 ns — fast enough for low-frequency switching supplies and logic-level signal conditioning, though not intended for high-speed power conversion. The 4 pF capacitance at zero bias (1 MHz) is low enough to avoid loading high-impedance analog inputs in most signal-chain applications.
Housed in a DO-213AA surface-mount package (also known as MELF or SOD-80), the 1N914UR is a cylindrical leadless device. The metallized end caps are the anode and cathode — orientation is critical during pick-and-place. The package footprint is standard for small-signal MELF diodes, and the bulk packaging means it ships loose in a bag or tube, not on tape-and-reel. DO-213AA is a common form factor for high-reliability and military-grade diodes. The cylindrical body provides good thermal cycling performance, but the lack of flat leads means solder joint inspection requires a side-view or X-ray. Reflow profile follows standard SnPb or Pb-free profiles depending on the assembly line.
Lifecycle and compliance
RoHS status is listed as non-compliant, which typically indicates a legacy tin-lead plating or leaded glass seal. Verify your assembly's exemption status if the BOM requires full RoHS compliance.