SATCO Lighting S9578 4.5W ST19 LED, Transparent Amber, Medium Base, 2000K, 350 Lumens, 120V

The S9578 is dimmable. It draws 4.5 watts at 0.038 amps on 120V, 60Hz, so a run of these puts almost no load on the circuit. Because the draw per lamp is so low, check that your dimmer's minimum load is satisfied when only one or two lamps are on the circuit.

It replaces a 40W incandescent. Output is 350 lumens at 2000K, which is a deep warm amber rather than the 2700K soft white most 40W bulbs produce, so the light reads much warmer and more orange than the lamp you are pulling out.

Yes, the S9578 is an enclosed rated lamp, so it can go in a sealed globe, jar, or lantern-style fixture without voiding its service life. It also carries a damp location rating, which covers covered porches, bathrooms, and canopies, but not direct exposure to rain or sprinklers.

Burning position is universal, so the S9578 can be mounted base-up, base-down, or horizontal. With a 360 degree beam spread it throws light evenly all around the glass, which is what you want in an exposed-bulb sconce, pendant, or open cage fixture.

For the warm nostalgic look, the amber one is the choice: the S9578 pairs an LED filament with a transparent amber lens at 2000K, so the visible filament glows the way an old carbon-filament bulb does. Go with a clear-glass filament lamp instead if you need whiter light or more output, because 350 lumens at 2000K is decorative accent light, not task light.

Neither. The S9578 is a fixed 2000K lamp with no CCT selection and no three-way circuitry, so it will not step through brightness levels in a three-way socket. Level control has to come from a dimmer instead, which this lamp does support.

Average rated life is 15,000 hours. On a restaurant or lobby fixture running 12 hours a day, that is roughly three and a half years between relamps, which is the main reason property managers swap decorative incandescents for these.

CRI is 80, typical for decorative LED filament lamps and adequate where the bulb itself is the visual feature. Construction is glass with a metal base, so it looks and handles like a traditional bulb rather than a plastic-bodied LED.

No, the S9578 is not DLC approved, so it will not qualify under DLC-based utility rebate programs. It is FCC compliant and is noted as lawful for sale in California.