555 White W1 Cool White Single LED 6.3V Frosted Lens replacement bulb (Non-Polarized AC/DC)
Bluish tint white bulb
Have all the protection in the bulb to insure that a LED short will not fry you transistors.
NON-Polarized (AC/DC) brighter for GI locations
Use this type bulb anywhere you would use a regular 555 bulb
W1 and W2 Versions act more like Incandescent bulbs
Frosted Diffusers are the same shape as the incandescent bulb that it will replace.