Sylvania 20732 FPC40/835 40W Pentron Circline Bulb

The Sylvania Pentron® T5 Circline 20732 (FPC40/835) Lamp is a commercial-grade, high-efficiency 40-watt circular compact fluorescent bulb engineered for low-profile architectural ceiling troffers, modern decorative wall rings, commercial workspace bulkheads, and flush-mount lobby luminaires. Delivering 3,200 initial lumens of balanced 3500K neutral white light, this high-output circular lamp utilizes an ultra-slim, sub-miniature T5 glass tube profile to project a smooth, shadow-free 360° radial light field. Outfitted with a specialized 2GX13 4-pin plug-in base, it provides an extended 12,000-hour rated average service life when driven by high-frequency electronic ballast networks.

ADL Supply Expert Application & Replacement Guide

The Sylvania Pentron 20732 circular lamp is a trusted building facility and property management standard specified heavily for low-profile architectural flush mounts, reception area clouds, public commercial restrooms, and corporate corridors. Outfitted with an advanced 12-inch nominal circular profile, it distributes full-spectrum illumination uniformly across a broad radial footprint, effectively removing the center casting shadows and socket cutoff bands standard when trying to mount standard linear lamps inside shallow round luminaire pans.

Critical Electronic Ballast Requirements and 2GX13 Pin Configuration: Field technicians executing facility lighting sweeps must track two vital structural installation boundaries before checking out their cart. First, this high-output T5 ring utilizes a specialized 2GX13 base with four pins split into two parallel rows inside an internally facing plug housing. It is entirely incompatible with legacy T9 fluorescent rings which feature medium-profile G10q straight-line pin sleeves connected to loose external wire harnesses.

Second, this 40-watt lamp operates exclusively when driven by a compatible high-frequency electronic fluorescent ballast circuit managing a nominal 126V AC operating arc loop. It does not incorporate an internal starter and cannot run on legacy magnetic chokes. Installers must handle base alignment with care: line up the dual alignment blocks inside the lampholder socket before pressing the central retaining clips into the fixture pan. Applying structural twisting force at an uneven angle will shear or micro-crack the glass-to-base vacuum seals, rendering the gas column unusable.

Detailed Product Specifications

• Brand Name: Sylvania (OSRAM Sylvania Group / Pentron® Line)
• Product Family / Series: Pentron® T5 High-Output Circline Series
• Sylvania Order Code Catalog SKU: 20732
• Technical Abbreviation Designation Code: FPC40/835
• UPC Barcode Number (GTIN-12): 046135207327
• Core Technology Class: Fluorescent Gas-Discharge — T5 Miniature Circular Ring Profile
• Primary Control Requirement: 40W High-Frequency Electronic Ballast Only (ECG Compatibility)
• Operational Wattage: 40 Watts
• Nominal Arc Voltage Profile: Ballast Managed (Nominal 126V AC Lamp Operating Voltage)
• Initial Luminous Brightness: 3,200 Lumens (Post standard 100-hour seasoning burn)
• Mean Luminous Lifecycle Output: 2,720 Lumens (85% Lumen Maintenance Factor)
• Luminous Efficacy Ratio: 80 Lumens per Watt (LPW)
• Color Temperature Configuration: 3500K Neutral White (835 Rare-Earth Tri-Phosphor Coating)
• Color Rendering Index (CRI): 82 Ra
• Base Type Configuration: 2GX13 (4-Pin Plug-In, Internal-Facing Parallel Dual-Row Layout)
• Nominal Tube Profile Diameter: T5 Shield (5/8" Inch / 16.0mm actual glass envelope width)
• Nominal Catalog Size Class: 12" Inches
• Actual Structural Outside Diameter: 11.54" Minimum to 12.01" Maximum Total Circle Span Range
• Rated Average Service Lifespan: 12,000 Hours (Constant Ballast Control Regulation)
• Chassis Burn Position Limit: Universal — Operates reliably in any flat mounting angle

Operation, Safety & Mounting Compliance

High-Frequency Electronic Signal Transformation

When retrofitted onto modern high-efficiency electronic ballasts, this lamp operates at high frequencies exceeding 40 kHz, completely eliminating stroboscopic workplace eye fatigue and structural flickering loops common in old low-frequency magnetic systems. High-frequency controls prevent terminal cathode sputtering during startup cycles, safeguarding the tri-phosphor chemical lining to guarantee consistent light output. Minimum starting ambient operational thresholds rest at 50°F (10°C), built for conditioned interior architectural spaces.

Mercury Content Dosing and Safe Bulk Disposal Protocols

This compact circular tube incorporates a controlled 4.3 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 electrical tracking component. National safety codes mandate processing this module through verified commercial bulk recycling collection centers during facility maintenance sweeps rather than discarding into standard residential or municipal solid waste streams.

Commercial Equipment Industry Cross-References

This premium 40W T5 12" circular bulb serves as a direct drop-in alternative for the following indicators:

• Philips MasterColor Match: TL5 Circular 40W/835 / Order Code 22525-0
• GE Lighting Alternative: FC12T5/835 / Order Code 41300
• Osram European Line: FC 40W/835 2GX13 / Lumilux T5 Circular Ring

Bulk Commercial Lighting Supply & Project Support

ADL Supply handles volume distribution shipments, multi-pack logistics, and contractor project quotes for procurement teams, schools, and warehouse facilities nationwide.

For specialized contractor pricing tiers, job-site pallet deliveries, or comprehensive submittal documentation, contact our support team directly at 1-800-235-3489. We are your commercial supply partners as an authorized wholesale Lighting Distributor In Doral, Florida.