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The LED Authority

Long Star 23W 120V Daylight White Spiral CFL Bulb

SKU: FE-IISB-23W/65K | Ordering Code: FE-IISB-23W/65K  | UPC: 836701001356

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Bulb Color
Cool White

Product Highlights

  • Energy efficient replacement for a conventional 100 watt bulb
  • Estimated life of 9.1 years based on 3 hours use per day

Lighting Facts Per Bulb

Brightness 1600 lumens
Estimated Yearly Energy Cost $2.77
Based on 3 hrs/day, 11¢/kWh
Cost depends on rates and use
Based on 3 hrs/day9.1 years
Light Appearance
6500 K
Energy Used23 watts
  • Clearance

Longstar brand 23 Watt compact fluorescent lamp.  Daylight White color for very bright appearance

  • Outstanding energy efficiency - provides equivalent light to many 100 Watt incandescent lamps while using only 23 Watts of electricity

  • Outstanding life - 10,000 hour rated life is five to ten times as long as most incandescent lamps

  • Outstanding value - replace your existing lamps with more energy efficient technology, at a competitive price

NOT RECOMMENDED for use in enclosed fixtures or for use with control devices such as sensors or dimmers, may shorten lamp life.

Full Specs



Energy Used

A rating, expressed in watts, to indicate the rate at which a lamp consumes energy. Also known as wattage value.
Energy Used
23 Watts

Incandescent/Halogen Equivalent

The wattage value of an incandescent or halogen lamp of similar brightness.
Incandescent/Halogen Equivalent
100 Watts


A measure of "electrical pressure" between two points. The voltage specification of an incandescent lamp is the electrical "pressure" required to drive it at its designed point. The "voltage" of a ballast (e.g. 120 V) refers to the line voltage coming from the power source and is connected to the ballast.


The end (or ends) of the lamp that fits into the socket.
Medium (E26)

Bulb Shape

The description of the general appearance of a lamp/bulb consists of a letter(s) followed by a number. The letter indicates the shape of the bulb and the number relates to the diameter of the bulb in eighths of an inch. For example, a common household bulb is the A-19. The bulb is "A" shape and the diameter would be nineteen 8ths of an inch, or 2 3/8".
Bulb Shape

Bulb Color

The color of the light produced by a bulb
Bulb Color
Daylight White


Color Rendering Index is an international system used to rate a lamp's ability to render object colors. The higher the CRI (based upon a 0-100 scale) the richer and more accurately colors generally appear. CRI differences among lamps are not usually visible to the eye unless the difference is more than 3-5 points.

Color Temperature (Kelvin)

An expression of the hue of the light emitted, measured in degrees Kelvin. Usually expressed by a four digit number followed by (k), such as 2700k. Higher temperatures indicate whiter, "cooler" colors, while lower temperatures indicate yellower, "warmer" colors. Some common Kelvin temperature benchmarks are 2700k (warm white), 3500k (neutral white), 4100k (cool white), 5000k (bright white), and 6500k (daylight).
Color Temperature (Kelvin)

Brightness (Lumens)

A rating of the initial light output of a bulb, rated after 100 hrs of operation. Lumens are a measure of how much light falls on one square foot of area, one foot away from the light source.
Brightness (Lumens)

Bulb Finish

The surface finish of a bulb, which may affect the quality of the light emitted.
Bulb Finish

Bulb Technology

The technology implemented by the bulb, e.g. incandescent, halogen, LED
Bulb Technology

Average Rated Life (hr)

A measurement of the average length of time, between first use and the point when 50% of the lamps tested have stopped functioning, , using an operating cycle of 3 hours on, 20 minutes off.
Average Rated Life (hr)

Length (in)

Also referred to as "Maximum Overall Length" (MOL). For light bulbs, it measures the length of a light bulb, from the top of the bulb to the bottom of the base or pins and is typically expressed in inches. For light fixtures and ballasts, it applies to the total horizontal length of the item.
Length (in)

Diameter (in)

Light bulbs: a measurement of a bulb's width taken at the widest point of the bulb. Fixtures: the measurement across the widest point of a circular fixture.
Diameter (in)

Contains Mercury (Hg)

Contains some level of the element Mercury. Typically, bulbs containing Mercury display the symbol 'Hg'.
Contains Mercury (Hg)
Customer Reviews

Short life expectancy


I bought 10 of these bulbs and 3 of them have burned out after 2 months. They may be less expensive than other brands but their quality leaves a lot to be desired.


Kansas City


Just what I was looking for!


I needed a Bright daylight Bulb, but it had to be short in length and small in diameter, for a tight space and this Bulb worked perfect!




one down in 6 hours


Lighting in kitchen


beaver dam, Wisconsin


Dependable, Top Performer par excellence


Great CFLs from a Great Merchant

Big Al Up North

North Dakota


Just what I was looking for


Great Bulbs, a nice pure white color and bright as I wanted. I will continue to buy these in various sizes throught my home because of the the wonderful daylight color. It's like being outside in the sun, no tint of yellow at all. I highly recommend these to anyone who wants to see pure colors reflected in their srurroundings. Even brighter than the GE 6500 K bulbs I replaeced which are not being manufactured anymore, for the same wattage!!!!! Also, the price was rigth in line with what I had been buying previously, so I received good value as well as a great product. Thanks job!


Sacramento, CA


Beautiful color


Work well I would buy again


Waukesha, Wisconsin


Long Star 23W 120V Daylight White Spiral CFL Bulb

3.8 6


Q & A
Does this bulb "come on" right away when you flip the light switch, or does it take some time to reach it's brightness? If so, how long does it take?

When the bulb is first turned on the light output is at approximately 70-75%. It reaches full brightness within 20-30 seconds.

Product Support