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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Osram 54263 Halogen Lamp, 24 Volts, 150 Watts

Osram 54263 Halogen Lamp, 24 Volts, 150 Watts

Product ID: 88647908

Details

Brand
OSRAM
Bulb shape size
T
Light type
Halogen
Special feature
Dimmable
Wattage
150 watts

⚡150W high power output

💡6000 lumens bright white light

🇩🇪German engineering heritage

€ 21.97

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Description

💡 Light up your space with precision and power — don’t settle for less!

DIMMABLE CONTROL - Seamlessly adjust your ambiance with smooth dimming capabilities for every mood.
COMPACT TUBULAR DESIGN - Sleek T-shape fits perfectly in specialized fixtures without bulk or fuss.
POWER PACKED ILLUMINATION - 150 watts of crisp, white brightness to energize your workspace or home.
VERSATILE 24 V COMPATIBILITY - Optimized for 24 volts AC/DC, ensuring stable performance across setups.
PRECISION GERMAN CRAFTSMANSHIP - Engineered with quality and reliability from a trusted European brand legacy.

The Osram 54263 Halogen Lamp delivers a powerful 150W output with a bright 6000 lumen white light, engineered for 24V systems. Featuring a compact tubular design and dimmable functionality, this lamp combines German-inspired quality with versatile indoor use, making it a reliable choice for professionals seeking efficient, high-performance lighting.

Specifications

ASIN	B0711LMWMK
Accepted Voltage Frequency	100 to 240 Volts and 50 Hertz to 60 Hertz
Average Life Span	50 Hours
Best Sellers Rank	11,041 in Lighting ( See Top 100 in Lighting ) 258 in Halogen Bulbs
Brand Name	OSRAM
Bulb Base	G6.35
Bulb Shape Size	T
Color Rendering Index (CRI)	100
Colour	White
Connectivity Technology	Infrared, NO, USB
Control Method	Touch
Controller Type	Push Button
Country Of Origin	China
Customer Reviews	4.4 4.4 out of 5 stars (1,444)
EU Energy Efficiency Label	D
Global Trade Identification Number	04050300006727
Incandescent Equivalent	150 Watts
Included Components	Bulb
Indoor Outdoor Usage	Indoor
Item Dimensions W x H	26W x 70H millimetres
Item Shape	Tubular(T)
Item Weight	9 Grams
Light Color	White
Light Output Maximum	97200 Lumens
Light Source Wattage	150 Watts
Light Type	Halogen
Manufacturer	OSRAM
Manufacturer Part Number	54263
Material Type	Glass
Model Name	54263
Model Number	54263
Number of Items	1
Package Quantity	1
Power Consumption	150 Watts
Power Source	24 Volts AC or DC
Special Features	Dimmable
Specific Uses	General purpose
Specification Met	ANSI
Style Name	country
Type of Bulb	Halogen
Unit Count	1.0 count
Voltage	24 Volts
Wattage	150 watts
White Brightness	6000 Lumens

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