1. Introduction
This manual provides essential information for the safe and effective use of the OSRAM FCS 64640 HLX 150W 24V Tungsten Halogen Lamp. This lamp is designed for applications requiring precise illumination, such as in medical and scientific fields, including microscopy, fiber illumination, surgical and dental overhead lighting, laboratory analysis, and diagnostics. The HLX technology utilizes Xenon gas to provide enhanced luminous efficacy.
2. Safety Information
Please read and understand all safety instructions before installing or operating the lamp. Failure to follow these instructions may result in electric shock, fire, or personal injury.
- Electrical Safety: Ensure the power supply is disconnected before installation or replacement. Only use the lamp with compatible fixtures and power sources that match its specified voltage (24V) and wattage (150W).
- Heat Hazard: Halogen lamps operate at high temperatures. Allow the lamp to cool completely before handling. Avoid touching the glass bulb with bare hands, as oils can create hot spots and reduce lamp life. Use a clean cloth or gloves.
- UV Radiation: While this lamp is designed for specific applications, prolonged direct exposure to intense light sources should be avoided.
- Lamp Handling: Handle the lamp carefully to prevent breakage. Do not use if the glass envelope is cracked or damaged.
- Disposal: Dispose of used lamps according to local regulations.
3. Product Overview
3.1 Features
- Precision Filament Alignment: Ensures consistent and reliable light output, crucial for sensitive applications.
- HLX Technology: Utilizes Xenon gas instead of Krypton, providing up to 10% greater luminous efficacy and output over the lamp's life.
- Versatile Application: Suitable for medical and scientific instruments, including microscopy, fiber optics, surgical lighting, and diagnostic equipment.
- High Performance: 150W power, 24V voltage, G6.35 base, with an average lifetime of 50 hours.
3.2 Components
The OSRAM FCS 64640 HLX lamp consists of a compact glass envelope, a tungsten filament, and a G6.35 bi-pin base for electrical connection.

Image 1: OSRAM FCS 64640 HLX 150W 24V Tungsten Halogen Lamp. This image shows the compact glass bulb with its bi-pin G6.35 base, ready for installation into a compatible fixture.
4. Setup and Installation
- Power Disconnection: Before beginning installation, ensure the power supply to the fixture is completely disconnected.
- Cool Down: If replacing an existing lamp, allow the old lamp to cool down completely to avoid burns.
- Handle with Care: Wear clean gloves or use a clean, lint-free cloth to handle the new lamp. Avoid touching the glass bulb directly with bare hands, as skin oils can cause premature failure.
- Insert Lamp: Carefully align the two pins of the G6.35 base with the corresponding sockets in the fixture. Gently push the lamp into place until it is securely seated. Do not force the lamp.
- Secure Fixture: Close any protective covers or housing on the fixture as per the equipment manufacturer's instructions.
- Reconnect Power: Once the lamp is securely installed and the fixture is reassembled, reconnect the power supply.
5. Operating Instructions
The OSRAM FCS 64640 HLX lamp is designed for immediate operation upon proper installation and power connection.
- Power On: Activate the power switch of the equipment or fixture in which the lamp is installed.
- Voltage Compatibility: Ensure the operating voltage of the fixture matches the lamp's 24V requirement. Incorrect voltage can lead to reduced lamp life or immediate failure.
- Warm-up Time: Halogen lamps typically reach full brightness almost instantly.
- Cool Down: Always allow the lamp to cool down after use before attempting any handling or maintenance.
6. Maintenance
Minimal maintenance is required for the OSRAM FCS 64640 HLX lamp beyond proper handling and timely replacement.
- Cleaning: If the lamp's glass envelope becomes dirty, ensure the lamp is cool and power is disconnected. Gently wipe the glass with a clean, dry, lint-free cloth. Do not use abrasive cleaners or liquids.
- Replacement: Replace the lamp when it reaches the end of its average rated life (50 hours) or if it fails prematurely. Follow the installation steps outlined in Section 4 for replacement.
- Inspection: Periodically inspect the lamp and fixture for any signs of damage or wear.
7. Troubleshooting
If the lamp is not functioning as expected, consider the following troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| Lamp does not light up. |
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| Lamp life is shorter than expected. |
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| Reduced light output. |
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8. Specifications
| Brand | OSRAM |
| Model Number | 54263 (FCS 64640 HLX) |
| Light Type | Halogen |
| Wattage | 150 Watts |
| Voltage | 24 Volts |
| Bulb Base | G6.35 |
| Bulb Shape Size | T3 (Tubular) |
| Average Lifetime | 50 Hours |
| Brightness | 97200 Lumens |
| Color Temperature | 3450 Kelvin |
| Color Rendering Index (CRI) | 100 |
| Material Type | Tungsten, Fiber |
| Item Weight | 9 Grams |
| Item Dimensions (W x H) | 1.38"W x 2.05"H |
| Indoor/Outdoor Usage | Indoor |
9. Warranty and Support
9.1 Manufacturer's Warranty
This OSRAM lamp is covered by a manufacturer's warranty of 30 days from the date of purchase. This warranty typically covers defects in materials and workmanship under normal use. Please retain your proof of purchase for any warranty claims.
9.2 Customer Support
For technical assistance, warranty claims, or further inquiries regarding your OSRAM product, please contact OSRAM customer support through their official website or the retailer from whom the product was purchased.
OSRAM Official Website: www.osram.com (Please note: This link is provided as a general reference. Specific regional support contact information may vary.)





