Osram L 8W/840 G5 241623

The Osram Lumilux® T5 Short 241623 (L 8W/840) Lamp is a commercial-grade miniature linear fluorescent bulb engineered for space-constrained under-cabinet tasks, retail display showcase framing, emergency exit signs, and low-profile industrial fixture bulkheads. Delivering 430 initial lumens of crisp 4000K cool white illumination, this high-performance 8-watt lamp utilizes a premium tri-phosphor coating to capture an elite 80–89 CRI rating for excellent color fidelity. Outfitted with an industry-standard G5 miniature bi-pin base, it yields a reliable 10,000-hour service life when operated on approved electronic control gear.

ADL Supply Expert Application & Replacement Guide

The Osram L 8W/840 (241623) linear fluorescent lamp is an established architectural maintenance standard specified heavily across retail window niches, office task stations, hospitality under-cabinet strips, and commercial emergency safety panels. Outfitted with an advanced Lumilux® tri-phosphor gas lining, this compact tube ensures sharp visual contrasts and stable lumen maintenance profiles across its entire service lifecycle, avoiding the rapid color drift and early dimming loops associated with cheap standard halophosphor bulbs.

Critical Linear Dimension Traps and Preheat Starter Circuit Balancing: Electrical contractors executing maintenance sweeps must evaluate exact mechanical dimensions prior to ordering. While the raw clear glass length without pins spans 11.34 Inches (288mm), the official industry maximum overall length (MOL) measurement from pin face to pin face stands at exactly **11.91 Inches (302.5 mm)**. Verifying this clearance is absolute; a minor dimensional miscalculation will block the bulb from rotating into tight structural under-cabinet lampholders.

Furthermore, when pairing this lamp with conventional magnetic chokes, it runs inside a traditional preheat fluorescent loop circuit. This design requires an external physical starter button to function safely. If you are replacing a non-functional or blinking tube, ADL Supply strongly recommends replacing the internal fixture starter capsule simultaneously. Forcing a fresh lamp into a circuit with an old, shorted starter will trigger severe cathode blistering, causing rapid end-blackening and early module failure.

Detailed Product Specifications

• Brand: Osram (Premium Professional Lumilux® Division)
• Product Series Line: T5 Short Miniature Linear Fluorescent Series
• Osram Factory Catalog Product Code: 241623
• Global UPC / EAN Identification Number: 4050300241623
• Manufacturer Nomenclature Model: L 8W/840 (L8W840)
• Official Industry ILCOS Category Identifier: FD-8/840-E-G5-16/288
• Core Technology Class: Fluorescent Gas-Discharge — T5 Miniature Tube
• Primary Control Requirement: 8W High-Frequency Electronic Ballast (ECG) or Preheat Magnetic Ballast
• Operational Power: 8 Watts (7.50W construction value)
• Nominal Arc Voltage Profile: Ballast Managed (Nominal 56V AC Lamp Operating Voltage)
• Initial Luminous Brightness: 430 Lumens (Up to 450 lm under laboratory test parameters)
• Luminous Efficacy Ratio: 56 - 61 Lumens per Watt (LPW)
• Color Temperature Configuration: 4000K Cool White (840 Lumilux Phosphor Matrix)
• Color Rendering Index (CRI): 80..89 Ra (Group 1B Clean Fidelity Baseline)
• Base Type Configuration: G5 Miniature Bi-Pin (5mm Pin Center-to-Center Spacing)
• Nominal Tube Profile Diameter: T5 Shield (0.625" Inches / 16.0mm actual glass envelope width)
• Maximum Overall Length (MOL): 11.91" Inches Pin Face to Pin Face (302.50mm actual)
• Glass Shell Length (Excluding Pins): 11.34" Inches Base-to-Base (288.00mm actual)
• Nominal Catalog Length Designation: 12" Inches
• Rated Average Service Lifespan: 10,000 Hours driven on Electronic Control Gear (5,600 Hours on Conventional Preheat)
• Chassis Burn Position Limit: Universal — Operates reliably at any horizontal or vertical mounting angle

Operation, Safety & Mounting Compliance

High-Frequency Electronic Controls and Low-Temperature Ignitions

When retrofitted onto modern electronic ballasts (such as Osram Quicktronic networks), this lamp operates at high frequencies to eliminate runtime stroboscopic effects and maximize gas conversion efficiency. Electronic control gear prevents terminal cathode spitting during startup cycles, securing the bulb’s maximum 10,000-hour service life. Minimum starting ambient operational thresholds rest at 50°F (10°C), engineered for conditioned interior housings or climate-controlled signage boxes.

Mercury Content Dosing and Safe Bulk Disposal Protocols

This compact linear tube incorporates a controlled 2.9 mg mercury fill weight dose within its gas-discharge chamber to complete its fundamental ultraviolet arc pathway. While engineered with high-purity tri-phosphor layers that maintain excellent lumen stability over extended daily shifts, it remains a heavy-metal hazardous electronic tracking component. National safety codes mandate processing this module through verified commercial bulk recycling centers during maintenance change-outs rather than discharging into standard residential or municipal solid waste streams.

Commercial Ballast Industry Cross-References

This premium 8W T5 11.91" linear bulb serves as a direct drop-in alternative for the following indicators:

• Sylvania Match: 20042 / F8T5/CW (Miniature Preheat Cool White)
• GE Lighting Alternative: 10059 / F8T5/CW (Miniature Preheat Linear Match)
• Philips Lighting Cross: 33246-0 / F8T5/Cool White Series
• Halco Reference: F8T5/CW / Product Code 35002

Bulk Commercial Lighting Supply & Project Support

ADL Supply handles volume logistics management, tiered commercial contractor pricing models, and full pallet project quotes for facility teams, municipal procurement agents, and electrical accounts nationwide.

For professional contractor tiered discounts, full pallet freight distributions, or dedicated technical submittal specification sheets, reach our support center directly at 1-800-235-3489. We are your commercial supply partners as a dedicated wholesale Lighting Distributor In Doral, Florida.