Are the prongs flat or rounded

The pins of an FCS bulb, regardless of brand are round. An FCS bulb has what is called a G6.3 Base Type. The pins are 6.3mm apart from one another measured on center and the the pin diameter can vary slightly between .95mm and 1.05mm diameter and still be within spec. The pins are round.

Does this work with outdoor landscape lighting which I think is 12v but I'm not sure.

For more than one reason, the answer is no. The FCS bulb is rated to operate at 24 Volts. If you have a 12 Volt system, meaning 12 volts at the socket, if you install the FCS bulb which is rated to operate at 24 volts, it will barely come on if at all. If it did come on, it would be very very dim. A second reason the FCS would not be a good choice for your application is the life hours. Even if the voltage was compatible, a FCS bulb is designed for use as a medical or optical device bulb and has an average rated life of only 50 hours. Even if the voltage were compatible, the FCS would be a very poor choice as it would burn out frequently. In contrast a typical bulb designed for landscape lighting would have a life hour rating of 2000 hours. To make a proper choice for a bulb for your landscape lights, first be certain of the voltage required at the socket, and second, know the maximum rated wattage recommended for the fixture and third, the base type required so that the bulb can be properly installed in the socket of the light.

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💡 Illuminate like a pro — don’t let your workspace settle for less!

SEAMLESS COMPATIBILITY - Operates efficiently on both 24V AC and DC power sources for versatile use.
GERMAN ENGINEERING EXCELLENCE - Crafted by Osram in Germany, ensuring durability and premium quality you can trust.
POWER YOUR SPACE WITH PRECISION - 150 watts of intense, reliable illumination for professional-grade lighting.
DIMMABLE CONTROL FOR MOOD MASTERY - Adjust brightness effortlessly to create the perfect ambiance or task lighting.
BRILLIANT BRIGHTNESS THAT COMMANDS ATTENTION - Delivers a stunning 97200 lumen output to light up any environment with clarity.

The Osram 54263 Halogen Lamp is a high-performance 150W, 24V tubular halogen bulb delivering an impressive 97200 lumens. Engineered in Germany, it offers dimmable functionality and compatibility with both AC and DC power sources, making it ideal for professional and general-purpose lighting needs.

Reviews

R**6

it lights up

Light bulb that works - nice

28.12.2024

M**S

Great value

Great value for money and arrived promptly.

13.08.2025

L**Y

Lamp

Does the job....happy

20.06.2019

A**R

Outstanding service and delivery

Ordered at 9.30am and bulb arrived at 6.30 pm SAME DAY! We were sceptical as to same day delivery, but yep, turned up. Free delivery too. Am slightly bewildered. Don’t know how but amazing service and bulb worked a treat in old slide projector for father-in-law to view his old slides.

18.09.2020

S**S

Just the job

After being told by an electrical store to look online for a replacement bulb for my old Prinz Auto Focus slide projector, but warned it would be expensive - up to £20 - I was delighted to find this at a quarter the price. It is marginally smaller, but fitted perfectly and we're reminiscing with old slides again!

25.10.2020

C**D

fits ancient projector

Correct voltage and wattage and fits ancient projector.

3.03.2023

A**R

Replacement bulb

It worked in our slide projector

10.02.2023

M**E

A shining light

This projector has not worked for years and l did not think I could get a bulb. It worked a treat

13.02.2021

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Manufacturer	OSRAM
Part number	54263
Item Weight	9 g
Product Dimensions	1.6 x 3.5 x 5.2 cm; 9 g
Item model number	54263
Size	1 Count (Pack of 1)
Colour	Silver
Style	country
Shape	Tubular(T)
Power source type	24 Volts AC or DC
Voltage	24 Volts
Wattage	150 watts
Item Package Quantity	1
Noise Level	1 Decibels
Light source	Halogen
Luminous Flux	97200 lumen
Specification met	ANSI
Special Features	Dimmable
Specific uses	General purpose
Batteries included?	No
Batteries Required?	No

Osram 54263 Halogen Lamp, 24 Volts, 150 Watts

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