Osram FDT 100W 12V Display & Optic Halogen Lamp – ANSI FDT | 3400K | 3000 Lumens | GY9.5 Bipin | T3 Clear | Made in Germany

The Osram FDT is a 100-watt 12-volt T3 clear halogen lamp delivering 3,000 initial lumens at 3400K with GY9.5 bipin base, S90 burn position, 700-hour rated life, and LIF Code A1/261. Designed for display and optical applications in approved enclosed halogen fixtures, this German-manufactured lamp provides the defined photometric performance required by specialty display, projection, and precision optical equipment specifying 

Quick Specs

• Brand: Osram
• ANSI Code: FDT
• LIF Code: A1/261
• Osram Product Code: #4008321099549
• Country of Origin: Germany
• Lamp Type: T3 Clear Halogen — Display & Optic
• Wattage: 100W
• Voltage: 12V
• Base Type: GY9.5 Bipin
• Color Temperature: 3400K
• Initial Lumens: 3,000 lm
• Rated Average Life: 700 hours
• Burn Position: S90
• Overall Length (MOL): 47mm
• Diameter: 13mm (T3)
• Bulb Finish: Clear
• Fixture Requirement: Approved Enclosed Halogen Fixtures Only

Product Overview

The Osram FDT is a 100-watt 12-volt T3 clear halogen lamp for display and optical equipment — a precision specialty source operating at 3400K with 3,000 initial lumens from a compact 47mm × 13mm tubular form factor on a GY9.5 bipin base. The FDT ANSI code and LIF Code A1/261 identify the exact electrical and dimensional parameters for this lamp class, ensuring correct replacement in equipment requiring this specific photometric specification.

At 3400K, the FDT produces a daylight-balanced, slightly blue-white light output above the 3200K studio standard — appropriate for photographic copy systems, densitometric and colorimetric calibration equipment, optical test benches, and specialty display systems where the defined color temperature is a technical requirement. The 3,000 lm initial output from a compact 13mm T3 envelope provides high lumen density for optical coupling into fiber light guides, condensers, and focused illumination systems.

The S90 burn position specifies this lamp must operate within 90° of its rated burn axis — a less restrictive position constraint than horizontal-only lamps, but still a defined installation requirement. Verify your equipment’s lamp mounting orientation against the S90 designation before ordering. At 700-hour rated life, this lamp delivers a longer service cycle than very high-intensity photo-optic lamps while maintaining the consistent photometric output required for calibrated optical applications. Made in Germany to Osram’s precision manufacturing standards.

Why Choose This Product

• ANSI FDT / LIF A1/261 — exact specification match: Specifying by ANSI and LIF codes ensures the replacement lamp meets the same electrical, photometric, and dimensional parameters as the original equipment specification — critical for optical instruments where lamp tolerances affect calibration and output accuracy.
• 3,000 initial lumens — high lumen density from compact T3 format: 3,000 lm from a 13mm diameter T3 envelope provides the lumen density required for efficient optical coupling in fiber illumination systems, condensers, and focused display equipment.
• 3400K — daylight-balanced color temperature: Above standard tungsten (3200K) — appropriate for photographic, colorimetric, and densitometric applications requiring a defined color temperature reference above the studio standard baseline.
• GY9.5 bipin base — precise mechanical alignment: Standard base for display and optical halogen equipment, providing consistent lamp positioning critical for focused optical systems.
• 700-hour rated life — extended service for display and optical use: Longer than short-life photo-optic lamps while maintaining the high-output performance of precision halogen technology — reduces replacement frequency in continuous-duty display and analytical equipment.
• Made in Germany: Manufactured to Osram’s precision optical lamp tolerances for consistent performance across production batches.

Technical Specifications

Dimensions

Applications

• Display and specialty lighting systems – Enclosed display fixtures and specialty illumination equipment specifying ANSI FDT 100W/12V GY9.5 halogen for defined photometric output at 3400K.
• Photographic and copy systems – Copy light heads, photographic enlargers, and optical printing equipment requiring 3400K halogen output at defined lumen levels from a compact T3 source.
• Optical and analytical instruments – Test benches, spectrophotometers, colorimeters, and densitometers requiring a defined 3400K reference illumination source with consistent output.
• Fiber optic illuminators – Halogen fiber light sources requiring a compact high-lumen-density T3 source for efficient coupling into fiber bundles and light guides.
• Specialty projection equipment – Small-format projectors and display systems specifying ANSI FDT parameters for correct exposure and color balance.

Replacing Your Current FDT Halogen Lamp?

• ANSI code — FDT: Verify your equipment specifies ANSI FDT. This code defines exact wattage (100W), voltage (12V), base type (GY9.5), and photometric characteristics — adjacent codes (FCS, FCV, FDN) are not electrically or optically interchangeable even if similar in appearance.
• Voltage — 12V: This is a 12V lamp. Verify your equipment’s power supply or transformer output is 12V. Operating above rated voltage significantly shortens lamp life.
• Burn position — S90: The S90 designation means this lamp must be operated within 90° of its specified burn axis. Verify your equipment’s lamp orientation falls within this range before installing.
• Base type — GY9.5 bipin: Verify your equipment uses GY9.5 bipin lamp holders. Note that G9.5, GX9.5, and GY9.5 are related designations with different pin tolerances — confirm the exact base type with your equipment documentation before ordering.
• Enclosed fixtures only: Must be installed in approved enclosed halogen fixtures. Do not use in open housings.
• Do not touch the bulb with bare hands: Skin oils cause hot spots leading to premature failure. Use clean gloves or lint-free cloth. Clean with isopropyl alcohol if touched accidentally.
• Allow cool-down before handling: Allow the lamp and equipment to cool completely before replacement.

Ordering Information

• Brand: Osram
• ANSI Code: FDT
• LIF Code: A1/261
• Osram Product Code: #4008321099549
• Lamp Type: 100W 12V T3 Clear Halogen — Display & Optic
• Base: GY9.5 Bipin
• Country of Origin: Germany
• Case quantities and bulk pricing: Contact ADL Supply for volume orders.

Safety and Installation Guidelines

• Enclosed fixtures only: Use exclusively in approved enclosed halogen fixtures for safety and optimal performance.
• Burn position — S90: Install within 90° of rated burn axis. Verify fixture orientation before installation.
• No bare hands: Never touch the bulb envelope with bare skin. Use clean gloves or lint-free cloth. Clean with isopropyl alcohol if touched accidentally.
• Do not exceed rated voltage (12V): Verify equipment transformer output before installing.
• Allow cool-down before handling: Allow lamp and equipment to cool completely before replacement.
• Follow your equipment manufacturer’s service documentation for lamp replacement procedures.

Compliance and Certifications

• Verify RoHS compliance with manufacturer specification sheet.
• Verify applicable certifications for your specific equipment application with the manufacturer specification sheet.
• Verify Prop 65 warning requirements with manufacturer specification sheet.

ADL Supply recommends confirming all compliance data with the Osram official product data sheet prior to specification or installation.