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Compact fluorescent bulb, single U-tube, G23 two-pin base, cool white finish

SYLVANIA

SYLVANIA 20307 CF7DS/850 7W G23 5000K 400LM fluorescent standard bulb

SKU CH-7DRC-3AMYE

7 W G23-base compact fluorescent bulb delivers 400 lm of 5000 K daylight for magnetic-ballast fixtures

  • Power rating7
  • Light output400
  • Color temperature5000K
  • Lifespan (hours)10000
  • Color rendering82
  • Product typeFluorescent Bulbs
  • Cool 5000K daylight tone for clear visibility
  • 400 lumens from only 7 watts of power
  • 10 000-hour rated life reduces replacement frequency
  • G23 2-pin base fits magnetic-ballast fixtures
  • 82 CRI renders colours accurately

Product identity

The Sylvania 20307 CF7DS/850 is a 7W single-tube compact fluorescent lamp with a G23 two-pin base. It delivers 400 lumens at a 5000K colour temperature and a CRI of 82, rated for 10000 hours of life. This plug-in bulb suits magnetic-ballast fixtures in offices, retail displays or utility areas needing cool white light.

Thermals noise and power

At 7 watts the lamp runs cool compared with incandescent equivalents and produces no audible hum from the magnetic ballast. The low power draw keeps circuit loading minimal in multi-lamp installations. Surface temperature stays modest during continuous operation, reducing heat load in enclosed fittings.

Upgrade context

The bulb directly replaces any 7W G23 single-tube CFL of the same pin spacing and 5.3 inch overall length. It is not for fixtures requiring four-pin electronic-ballast lamps, higher lumen outputs, different colour temperatures or screw-in bases. The jump is worthwhile when an existing 7W G23 lamp fails and a new 5000K unit with 10000-hour rating is specified.

How it compares

Measured against everything we stock in General-Purpose & Specialty Bulbs, at today’s prices. Recalculated every night.

Price $3.99
Cheaper than about 94% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameSylvania
Product typeFluorescent Bulbs
Display
Light output400
Power
Power rating7
More details
Color temperature5000K
Lifespan (hours)10000
Color rendering82

Questions about this item

How do I install the G23 2-pin base and which orientation mistake should I avoid?

Align the two pins with the socket slots and press straight in until the bulb seats fully; forcing it at an angle bends the pins and prevents proper contact.

What maintenance or replacement will this 10000-hour fluorescent bulb need later?

After roughly 10000 hours the lamp reaches end of life and must be replaced; no interim cleaning or component service is required.

At what point does the 400-lumen output drop noticeably during continuous operation?

Light output gradually declines over the 10000-hour rated life, with the most visible reduction appearing near the end of that period.

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