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Clear halogen capsule with BA9s miniature bayonet base

OSRAM SYLVANIA

OSRAM SYLVANIA 64111 5 W 12 V BA9s halogen standard bulb

SKU CH-4A68-5PWF2

Halogen bulb with BA9s base delivers 50 lumens at 5 watts and 12 volts for 240 hours of average life

  • Power rating5
  • Light output50
  • Lifespan (hours)240
  • Product typeHalogen Bulbs
  • 50 lumens from a 5 W halogen design
  • 12 V BA9s miniature bayonet base fits compatible fixtures
  • 75 mm T-size suits compact sockets
  • 240-hour average life for standard-duty use
  • Model 64111 identifies the exact replacement part

Sylvania 64111 halogen bulb

The Sylvania 64111 is a 5 watt 12 volt halogen bulb with a BA9s miniature bayonet base. It produces a 50 lumen output in a clear T 2.75 envelope. This lamp suits fixtures that require a low-voltage miniature bayonet light source.

Sustained operation at 240 hours

Average rated life is 240 hours when run at the specified 12 volt supply. Light output remains consistent through the rated period until filament exhaustion. The compact halogen capsule maintains stable colour temperature during continuous use.

Simple bayonet installation

The BA9s base pushes into the matching socket with a quarter turn to lock. Ensure the fixture is powered off and the supply matches 12 volts to avoid immediate failure. Over-voltage or loose contact are the common causes of premature burnout.

How it compares

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

Price $5.99
Cheaper than about 90% of the 1,791 comparable items (median $17.99).

Specifications

Product
Brand nameSylvania
Product typeHalogen Bulbs
Display
Light output50
Power
Power rating5
More details
Lifespan (hours)240

Questions about this item

How much heat does the 5 W halogen filament produce when the 64111 runs continuously?

At 5 watts the bulb converts almost all input power into heat, so the glass envelope becomes very hot during extended use.

What fixture or socket must I already have to install the BA9s base?

You need a miniature bayonet (BA9s) socket that accepts a T 2.75 bulb and supplies 12 V.

Will the 50-lumen output match the brightness of the older incandescent bulbs I am replacing?

The 64111 emits 50 lumens, which is typical for a 5 W halogen and generally similar to a low-wattage incandescent of the same voltage.

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