Light Emitting Diodes — TO–18 Packages

   Generally LEDs are mounted in a package that provides two electrical leads, a transparent optical window for the light to escape, and heat-sinking. LED chip is soldered to the package surface that is connected to one of the lead wires. Top contact of the chip is connected to the other lead with a bond wire.
We offer a range of standard packages for LEDs and LED-matrices as follows:
TO-type packages:
TO18 — appropriate for mounting one-element LEDs
TO5 (TO39) — appropriate for mounting one element LEDs or LED-matrices
TO8 — appropriate for mounting multi-element LED-matrices
SMD type packages:
SMD3 (3x3 mm), SMD5 (5x5 mm), SMD5R (5x5 mm with microreflector) — appropriate for mounting one-element LEDs
SMD5R-3M (5x5 mm) — appropriate for mounting three-element LED-matrices
TO18
TO18-PR
TO18-PRwin
Very miniature packages with limited area for mounting
Material - kovar, finish - gold/plating
The number of lead pins is 2 or 3
Equipped with a cap (with/without a window) or a parabolic reflector (with/without a window)
   Cap with a window (typically for models LED1.58-LED2.15) or without a window (for model LED2.20-LED4.45) protects LED device from damage
   Parabolic reflector with a quartz (for models LED1.58-LED3.65) or sapphire (for models LED3.75-LED4.45) window (PRwin) or without a window (PR) protects LED device from damage, provides the reduction of radiation divergence to 12° and improves the heat-sinking

Company contact: Nikolay Stoyanov e-mail ns@iropt6.ioffe.ru