LED lamps with pressure release structure | LED | Opto Electronics

LED

ROHM's unique high-reliability
LED lamps with pressure release structure: SLI/R-343 Series.

:This mark appears on LED lamps with pressure release structure

Pressure Release Structure

Solder failure occurs when solder gases trapped during the solder process escape to the surface via holes in the solder surface (Photo 1).
Photo 2 shows an LED lamp without solder holes, even during DIP (flow) soldering. The LED lamp is solidly mounted on the circuit board (See Fig. 1 and Fig. 2).

Problems with solder holes and features of the pressure release structure

Since there is insufficient solder adhesion when solder holes occur (Photo 1), there is a possibility that the solder may separate from the circuit board when an LED lamp is struck, causing it not to light. Therefore, auxiliary manual resoldering is required (which results in extra manpower)

LEDs connected without solder holes are firmly connected, eliminating the need for auxiliary manual soldering.

Comparison of the mechanism of solder hole formation and LED lamps without solder holes.