Product Overview
Sylvania 20909 F18T5/CW/RS/SMBASE 18W T5 4200K Cool White Fluorescent Lamp
The Sylvania 20909 (F18T5/CW/RS/SMBASE) is a 18W T5 miniature bi-pin (5/8" diameter) linear fluorescent lamp from the catalog group "Miniature T5 Preheat Lamps (Starter Required)". It measures 29.91" in overall length and produces 4200K cool white light with a 62 CRI. Rated average life is 7,500 hours based on 3-hour starts. This is a preheat lamp: the catalog lists it under Starter Required.
Wattage 18W T5 | Color Temp 4200K Cool White | Lumens 1,325 Initial @ 25°C | Length 29.91" 30" Nominal | Rated Life 7,500 Hours (3hr starts) |
Technical Specifications
| Sylvania Product Number | 20909 |
| Ordering Abbreviation | F18T5/CW/RS/SMBASE |
| Series | Miniature T5 Preheat Lamps (Starter Required) |
| Bulb Type | T5 Miniature Bi-Pin (5/8" diameter) |
| Base | G5 Mini Bi-Pin |
| Wattage | 18W |
| Nominal Length | 30" |
| MOL (Maximum Overall Length) | 29.91" |
| Color Temperature | 4200K (Cool White) |
| CRI | 62 |
| Initial Lumens @ 25°C/77°F | 1,325 (mean 1,150) |
| Average Rated Life (3hr starts) | 7,500 hours |
| Starting | Preheat – starter required |
| Standard Package Quantity | 24 per case |
| Mercury Content | Contains mercury – not for sale or shipment in CA, CO, HI, ME, MN, OR, RI, VT; recycle per lamprecycle.org |
Product Overview
The Sylvania 20909 is a 18W miniature T5 preheat lamp on a G5 mini bi-pin base. It is rated at 7,500 hours average life on 3-hour starts, with 4200K color temperature and 62 CRI.
The catalog lists this lamp as a preheat lamp that requires a starter, and gives 1,325 initial lumens at 25°C/77°F (mean 1,150). Because the starting method matters, check the existing ballast and starter before ordering.
Compatible Applications
- Fixtures specified for a 18W T5 G5 mini bi-pin lamp at 29.91" length
- Commercial, retail, and office linear fluorescent fixtures using T5 lamps
- Direct replacement for the Sylvania 20909 or its F18T5/CW/RS/SMBASE ordering abbreviation
Before Ordering – Verify
- Confirm your fixture accepts a 18W T5 lamp with a G5 mini bi-pin base
- Confirm lamp length of 29.91" matches your fixture's socket spacing
- This is a preheat lamp – confirm the fixture uses a starter and a compatible ballast
- Confirm 4200K color temperature matches the rest of your installation
- Minimum starting temperature is a function of the ballast; consult the ballast manufacturer
Safety and Handling Guidelines
- Turn off and allow the fixture to cool before relamping
- Handle by the base/end caps; avoid flexing or striking the glass tube
- Contains mercury – if broken, ventilate the area and follow EPA cleanup guidance
- Dispose of / recycle in accordance with state and local regulations
- Catalog note: T5 lamps operated on high-frequency ballasts may experience an abnormal end-of-life condition (bulb wall cracking near the base, or overheating of the base and socket). NEMA recommends ballasts with an end-of-life failure mode; see www.NEMA.org
Compliance
- Contains mercury – not for sale or shipment in CA, CO, HI, ME, MN, OR, RI, VT
- Recycle per lamprecycle.org
Ordering Information
- Sylvania Product Number: 20909
- Ordering Abbreviation: F18T5/CW/RS/SMBASE
- UPC: 046135209093
- Standard Package Quantity: 24 per case
For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.
