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SATCO Lighting S21331 5W BT15 LED, Clear, Medium Base, 90 CRI, 4000K, 120V
5 Watt BT15 LED - Clear - Medium base - 90 CRI - 4000K - 120 Volt
Manufacturer Resources
Spec Sheet
Product Specs
- Product Group:
- Lighting
- Product Subgroup:
- Lamps & Bulbs
- Lumens:
- 450L
- Dimmable:
- Yes-Dimmable
- Product Material:
- Glass / Nickel Plated Aluminum
- CRI:
- 90+
- Product Weight:
- 0.055 lb
- Department:
- Electrical
- Product Type:
- LED Lamp
Satco Lighting S21331 – Frequently Asked Questions
1) How bright is a 5 watt BT15 LED compared to the incandescent bulb I'm replacing?
The S21331 puts out 450 lumens on 5 watts at 120 volts. That lands it in the range of a 40 watt incandescent, so it's a straight swap for decorative 40W lamps while drawing about an eighth of the power.
2) Does this Satco BT15 have high enough CRI for retail or healthcare color rendering specs?
The S21331 is rated 90+ CRI, which meets the 90 CRI minimum commonly written into retail display, healthcare, and hospitality lighting specs. Most general-purpose LED lamps sit at 80 CRI, so this one is the higher-rendering option.
3) Is the Satco S21331 5W BT15 LED dimmable?
Yes, the 5W BT15 is a dimmable lamp. Because LED dimming depends on the control, pair it with a dimmer rated for LED loads; older incandescent-only dimmers can flicker or hum at the bottom of the range.
4) Is 4000K the right color temperature for a hotel corridor or office fixture?
4000K is neutral white, cooler and crisper than the 2700K warm look of an incandescent. It reads clean and modern in corridors, lobbies, offices, and back-of-house areas. If you're matching existing warm decorative lamps in a guest room or restaurant, 4000K will look noticeably bluer next to them.
5) The S21331 is a clear bulb, so will the filament be visible in an open fixture?
It's a clear glass BT15, so the LED filament assembly is visible through the envelope. That's the point in exposed-socket applications like sconces, pendants, chandeliers, and vanity bars. For fixtures where you want a diffuse glow with no visible source, choose a frosted or satin lamp instead.
6) What are the Satco S21331 bulb body and base made of?
Glass envelope with a nickel plated aluminum base. The nickel plating resists corrosion in the socket better than bare brass-finish steel, which matters in humid spots like bathrooms and covered exteriors.
7) Where can I get the full Satco S21331 spec sheet for a submittal?
Satco publishes a PDF spec sheet for the S21331 that covers the lamp's photometric and dimensional data, which is what you want to attach to a submittal package. It's available at https://media.distributordatasolutions.com/269/xlsx_satco/4c2e7ba7bc1133c0b21e3e4fe86e1788e6c6ec59.pdf
How fast can I get the Satco Lighting S21331 delivered?
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Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Satco Lighting S21331 come with a warranty?
Absolutely. The Satco Lighting S21331 is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Satco Lighting S21331?
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