HLMP4740 – TBC

The HLMP4740 is a green light-emitting diode (LED) designed for low-current operation. Based on the “HP” suffix, it is likely a legacy Hewlett-Packard (now Broadcom) part. While specific datasheets are unavailable without manufacturer confirmation, typical low-current LEDs of this era and type exhibit a forward voltage (Vf) of approximately 1.8-2.4V at a forward current (If) of 2mA. Dominant wavelength is expected to be in the 565-570nm range, resulting in a standard green hue. Luminous intensity is expected to be relatively low, suitable for indicator applications rather than illumination. The package is likely a standard T-1 3/4 (5mm) through-hole package. Reverse voltage (Vr) tolerance is likely around 5V. Engineers should exercise caution when using this part in new designs due to its potential obsolescence and lack of readily available comprehensive specifications.