OSRAM Circular Fluorescent Tubes T5

When you specify circular fixtures or retrofit kits, choosing the right circular fluorescent tube from OSRAM T5 Circular Fluorescent Tube family matters. Whether for exposed ceiling rings, decorative fixtures or industrial luminaires, these tubes deliver consistent output, predictable life-span and compatibility that installers expect. This page covers: osram circular fluorescent tubes t5, osram t5 circular lamps, osram fluorescent ring tubes, osram circular lighting fixtures — and what procurement, installation and maintenance teams should check.

OSRAM Circular Fluorescent Tubes T5: design & key specs

OSRAM’s circular T5 lamps typically feature 16 mm tube diameter (that’s the “T5” standard).For example: the FC 22W/840 model runs at 22 W, delivers ~1 900 lm and fits a 2GX13 (4-pin) base.Another example: FC 55W/865 delivers ~3 800 lm at 6500 K. 
Important parameters to inspect:

• Wattage & luminous output (22W≈1 900lm, 40W≈3 000lm, 55W≈3 800lm)
• Colour temperature options (e.g., 3000K warm white, 4000K neutral, 6500K daylight)
• Base/socket type (commonly 2GX13 for circular T5 lamps)
• Tube diameter (16 mm) and ring outer diameter (e.g., 300mm depending on lamp length)
  Ensuring these match your fixture design prevents mis-fits, rework and service calls.

OSRAM T5 Circular Lamps in Fixture Applications

In applications where you use osram t5 circular lamps inside ceiling fixtures or decorative rings, ask: Does the fixture allow correct clearance for the circular tube? For sealed luminaires check ambient temperature ratings—circular T5 lamps are sensitive to high Tc (junction temperature) and may drop lumen output if ambient exceeds recommended levels. According to one spec sheet, the 40W version is tailored for “round or square low-profile fixtures with direction neutral light” with high efficiency. 
Also note: ring-shaped tubes distribute light 360°, so fixture design must manage reflectors or diffusers to avoid glare or hot spots. Matching beam spread, diffuser type and mounting height is critical for uniform illumination.

OSRAM Fluorescent Ring Tubes: retrofit & servicing notes

When you replace older circular fluorescent tubes, go with osram fluorescent ring tubes that fit existing sockets and ballasts or allow a proper retrofit. Field note: many older fixtures use magnetic ballasts designed for legacy circular lamps; if you replace with high-efficiency OSRAM T5 circular, check ballast compatibility or consider electronic ballast conversion. As noted for T5 general tubes: T5 offer ~5% more efficiency vs T8 for ceiling applications.
Key tips for procurement and maintenance:

• Verify original fixture diameter and socket type: e.g., 300mm ring vs 225mm ring difference.
• Ensure disposal protocols: circular fluorescent tubes contain mercury like other lamps, so ensure proper recycling.
• Keep spare tubes from same production batch to avoid visible colour shift in comparable fixtures (especially in banks of rings).
• For maintenance, note rated lamp life is often ~12,000 h for certain circular T5 models

OSRAM Circular Lighting Fixtures: integration & system reliability

Designers specifying osram circular lighting fixtures (fixtures built around circular T5 lamps) expect more than just lamp performance—they demand system coherence. That means: fixture mounting hardware, wiring layout, access for tube replacement, thermal management and control gear compatibility all matter.
Example: a circular fixture in hospitality might use a 55W circular T5 at 6500K for display lighting, but if the fixture causes the tube’s Tc to rise above spec, lumen maintenance might degrade prematurely. So always cross-check fixture datasheet with tube datasheet.
Integration checklist:

• Thermal clearance above the ring lamp (a few cm of free air helps)
• Ease of tube replacement (prefer access to lamp ends without disassembling major parts)
• Compatible ballast or driver (ensure the circular tube is rated for the fixture’s control gear)
• Proper diffuser and glare control (especially in decorative fixtures)
• Balancing colour temperature and CRI across multiple rings in same room

Procurement & logistics for B2B supply

Ordering OSRAM circular fluorescent tubes T5 via a trusted distributor like us ensures you get genuine parts, correct documentation and traceability. Key practicalities:

• Order full batch for a project to maintain consistent colour and brightness across all fixtures
• Stock standard sizes (22W, 40W, 55W) with leading colour temps (3000K, 4000K, 6500K)
• Ensure packaging intact for warranty claims; OSRAM parts often have production dates and batch numbers for trackin
• Lead time: standard EU-wide delivery; keep a small maintenance stock (say 2-3%) for replacements
• Ensure disposal instructions included for fluorescent products (environmental compliance)

Why choose Bank of Lamps

Official European distributor with stock in Latvia
Direct B2B sales across EU (Germany, France, Netherlands, Spain, Baltics, etc.)
Full documentation and original manufacturer warranty
Fast dispatch from central warehouse
No project design, no custom solutions — just reliable wholesale supply