P28S 36 SMD 5050 High Output LED Lamp: 24V DC


SKU: 2130300

This lamp offers an opportunity to exchange your P28S incandescent lamp for an LED equivalent.


This electronically protected 24V, 36 SMD 5050, 500 lumen LED lamp was designed and constructed to maximise both light output and thermal efficiency particularly for use in navigation light and signal light fixtures that use a P28S lamp holder. The lamp is ideal for replacing both 10W and 25W incandescent lamps traditionally used in a range of signal lights.

In cool white this LED lamp can be used for stern, steaming and mast head anchor lights. Do not use cool white lamps behind separate red, green, or combined bi / tri coloured lenses, the output colours will not be correct. For the brightest light output use green lamps behind green lenses and red lamps behind red lenses.

The lamp is designed to minimise EMI, unlike other similar looking lamps sold for non marine use. We utilise specially designed PCB layouts which avoid tracks acting as antenna that radiate EMI (electromagnetic interference). This bulb has our on-board PWM, Buck-Boost, electronic control circuit which allows the lamp to operate satisfactorily even when smart battery chargers are used. The lamp has both an electronic fuse and voltage spike protection. These combine with 36 high output triple emitter SMD LEDs to give consistent light output and a very long service life.

Boatlamps recommend using Contralube 770 Gel on all lamp holder contacts and other connections on your boat. This product will protect against contact corrosion which is the most common reason both LED and traditional incandescent lamps flicker or fail.

These lamps are not polarity conscious as they are fitted with a diode bridge rectifier and can therefore be connected either way without damage.

  • Voltage: 24V DC
  • Input Power: 5W
  • Input Current: 416mA @ 12v (CW)
  • Lumen Output: 500 Lm (CW)
  • LED: 36SMD 5050
  • Dimensions: 68mm x 31mm dia + lamp cap 
  • Colour Temperature: ~6000K CW
  • Lamp Colours: Cool White, Red & Green 
  • Warranty: 24 months
  • Beam Angle: 360 deg

Important: In common with other replacement LED lamps on the market, it is not possible to have any sort of marine authority certification for individual replacement bulbs. These LED lamps are easily visible at distances exceeding 3nm in standard fixtures and are the brightest replacement LED bulbs available. Given the vast array of navigation light fittings installed on marine vessels, it is the user's decision alone whether to use this product to retrofit any particular light fitting used for navigation purposes.

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