ROHM diffuse lightbulb LED lamps feature multiple LEDs mounted on a 3D baseplate for broad distribution similar to conventional incandescent bulbs. The lineup includes both standard and diffuse types in daylight white or lightbulb (incandescent) color.


- Original LED configuration results in wide light distribution
- One drawback of LED bulbs is their linear light emission. Conventional LED bulbs feature LEDs arranged in a planar layout, resulting in less than optimal light distribution and a darker overall pattern. ROHM LED bulbs, however, utilize LEDs in a three dimensional array for wide light distribution.
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R-B10N1
R-B10L1
Total flux: 640lm/Luminous intensity: 100 lx (directly below) [R-B15N]
ROHM offers the brightest LED lighting products in the industry.
- All lights
- The amount of light emitted by the light source in all directions. The amount of light flux is large, resulting in what is considered a bright light source
(unit: lm).

- Illumination directly under the light source
- Incident flux per unit area directly under the light source (unit: lx).


ROHM High Quality LED Lighting
ROHM, a leading semiconductor manufacturer, has been placing a priority on 'Quality First' since its inception 50 years ago. Beginning with chip resistors, then expanding to LEDs, diodes, ICs, power supplies, and modules, ROHM now offers the highest quality, eco-friendly LED lighting devices and components.
LED Bulb Features
- 40,000hr lifetime
- Lasts for 10 years (10hrs/day). The long life makes them ideal for locations where replacement is difficult.
- Strong against ON/OFF switching
- Since LEDs do not deteriorate even when blinking, there are no adverse effects from ON/OFF switching.
- Does not attract insects
- Insects are normally attracted to ultraviolet light, which is why they gather at fluorescent and incandescent light sources. LEDs, on the other hand, do not emit UV light, making them unattractive to insects.
- Does not become hot
- Incandescent bulbs emit light by heating up a filament using electricity. In contrast, LEDs convert electricity to light directly, eliminating excessive heat generation.
- Resin cover ensures greater safety
- ROHM LEDs are composed of resin, making it safe, even when dropped or hit - unlike conventional incandescent bulbs that shatter.
- Fast lighting
- LEDs do not require any warmup time to achieve optimum brightness.
- Eco-friendly lighting
- The lower power consumption results in less CO2 production than conventional solutions. In addition, less heat generation reduces the level of AC required.

