28mm SMF1 LED Bulb Amber Set of 4 Diode Dynamics

28mm SMF1 LED Bulb Amber Set of 4 Diode Dynamics

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Design. The 28mm SMF1 LED bulb is a direct replacement for any 28mm-size bulb, commonly found in vanity mirror lights in many vehicles. Populated with one 5050-size SMD, the SMF1 upgrades the factory yellowish incandescent bulb to a more modern LED appearance. The SMF1 was designed with an embedded load resistor and implanted diode for superior reliability. With its durable metal terminals, it will fit snugly in the socket, and its light weight means it won't vibrate loose over time.

Reliability. Unlike other bulbs on the market, this bulb is built with constant-current circuitry, along with transient suppression. That means this bulb will last for years, not months, with no flickering or failure. And like every Diode Dynamics product, it's backed by an industry-leading three-year replacement warranty.

Brightness. With 8 lumens of true, measured output, the SMF1 LED will provide similar light output to your original 28mm-sized bulb. If you are looking to increase output, we'd recommend checking out our SMF2 option! All Diode Dynamics LED lighting is rated with accurate, measured lumen figures, not calculations or guesses. We test the true output in-house, and provide you the real numbers to compare.

Colors. In addition to vibrant colors of blue, red, amber, and green, the SMF1 is available in a cool white 6000K and warm white 3000K option as well. Whether you want a modern cool white appearance, or a traditional warm white color, we have the color to fit your need!

Experience. After over a decade in business, Diode Dynamics is the most trusted name in automotive LED lighting. Unlike every other LED distributor, we manufacture and engineer products ourselves in the United States, for high quality and fast time-to-market of the newest and brightest LED technologies. We pride ourselves in offering only quality LED products, that will exceed your expectations.

  • 28mm SMF1 LED Amber Set of 4
  • Direct replacement for factory 28mm festoon bulb
  • Adds more modern, LED appearance
  • Plug and play, simple installation


  • This festoon style bulb is used in the vanity mirror lights on many vehicles

What's Included

  • Quantity: Set of 4
  • Warranty: 3 year warranty
  • Return Policy: 30-day Return with no restocking fee
  • 100 percent Satisfaction Guarantee


  • Bulb Size: 28mm Fuse
  • Application: Vanity Mirror Light


  • Measured Lumens: 21
  • Beam Angle: Omnidirectional (270 degrees)
  • Power (watts): 0.18
  • Operating Voltage: 9-16V
  • Current (amps at 13.2V): 0.014
  • Polarity: Polarity Specific
  • Operating Temperature: -40C to 85C (-40F to 185F)
  • Connector(s): OEM-Size Plug and Play

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