Philips 408500 Elite CDM20/TM/830 GU6.5

The Philips MasterColor CDM-Tm Elite 20W/830 GU6.5 (40850-0) Lamp is a commercial-grade, high-CRI micro-ceramic discharge metal halide bulb engineered for luxury retail jewelry showcases, high-end fashion boutique accent tracks, museum display cases, art gallery downlights, and premium hospitality spaces. Delivering a brilliant 1,800 initial lumens of crisp, vibrant 3000K warm white illumination, this ultra-compact 20-watt bulb utilizes an advanced ceramic arc tube to achieve a stable color rendering index of up to 90 CRI. Outfitted with an integrated GU6.5 flanged twist-lock base and specialized FadeBlock™ UV-filtering quartz glass technology, it ensures precise mechanical locking and a long-lasting 15,000-hour rated average service life.

ADL Supply Expert Application & Replacement Guide

The Philips MasterColor CDM-Tm Elite 20W GU6.5 flanged lamp is a premium commercial baseline specified universally by real estate lighting engineers, interior venue designers, and facility procurement groups executing high-end architectural accents. Featuring an advanced ceramic discharge tube core, this miniature lamp provides unparalleled structural color stability of ±200K throughout its lifecycle, suppressing the rapid yellow-green color shift or drastic lumen fading common in legacy quartz metal halide bulbs. Its micro-casing footprint allows retail properties to deploy ultra-slim track cylinders and shallow downlight troffers, maintaining a clean architectural appearance while throwing crisp accent focal beams across target merchandise display layout tracks.

Critical Electronic Ballast Controls and Mechanical GU6.5 Twist-Lock Sockets: Field electricians and commercial maintenance teams executing routine site re-lamping sweeps must evaluate underlying electrical components closely prior to checking out: this specialized ceramic module strictly requires a 20W pulse-start electronic CDM ballast circuit to function. Traditional low-voltage filament transformers, solid-state incandescent dimming paths, and uncalibrated legacy HID probe-start ballasts are completely incompatible and will trigger immediate ignition failure or permanent component burnout.

To break down the internal gas gap and ignite the capsule, the matching electronic control gear must deliver an initial **3.0 kV to 4.0 kV (3,000V to 4,000V) high-voltage pulse strike down the load wire lines**. Ensure proper mechanical installation: insert the dual 6.5mm spaced pin tracks directly into the socket and rotate the bulb capsule a precise quarter-turn (approximately 90 degrees) until the internal pins engage the socket contact locks. Never attempt to force the pins in without twisting, as poor seating will invite micro-arcing and destroy the track terminals.

Detailed Product Specifications

• Brand Name: Philips Lighting (Signify Corporate Division / MasterColor® Elite Series)
• Product Series Line: Compact Ceramic Discharge Metal Halide (CDM-Tm) GU6.5 Series
• Philips Factory Product Order Code SKU: 40850-0
• Full Manufacturer Catalog Model Identifier: CDM20/TM/830/GU6.5
• UPC Barcode Number (GTIN-12): 046677408503
• Global Trade Logistics Code (GTIN-13): 0046677408503
• Philips Global 12NC Equipment Key: 928183605115
• Core Technology Class: High-Intensity Discharge (HID) — Ceramic Metal Halide Gaseous Arc Tube
• Primary Control Requirement: 20W High-Efficiency Electronic CDM Ballast (Pulse-Start Rated)
• Required Cold Ignition Pulse Threshold: 3.0 Kilovolts Minimum to 4.0 Kilovolts Maximum (3000V–4000V Starting Spike)
• Operational Power Draw: 20 Watts
• Nominal Arc Operating Voltage: Ballast Regulated (Sustaining operating voltage across gas column)
• Initial Luminous Brightness: 1,800 Lumens (Post standard 100-hour laboratory seasoning burn)
• Luminous Efficacy Ratio: 90 Lumens per Watt (LPW)
• Color Temperature Configuration: 3000K Warm White (830 Elite Tri-Phosphor Formulation)
• Color Rendering Index (CRI): 85 Minimum (Up to 90 Ra High Retail Accuracy Profile)
• Color Coordinates Profile: x = 0.432, y = 0.396 Chromaticity grid point
• Systemic Color Stability: ±200K Variance boundaries over full operational lifespan
• Special Optical Filtering: Integrated FadeBlock™ Quartz Envelope (Engineered to suppress fade-inducing ultraviolet lines)
• Base Type Configuration: GU6.5 Twist-Lock Base (Precision 2-Pin push-and-twist format with 6.5mm prong spacing)
• Bulb Shape Enclosure Class: T4 miniature tubular shell (High-purity clear transparent borosilicate glass)
• Maximum Overall Length (MOL): 2.23" Inches (56.6mm actual structural body height face-to-pin tip)
• Nominal Bulb Profile Diameter: 0.52" Inches (13.2mm maximum outer glass casing width)
• Rated Average Service Lifespan: 15,000 Hours (Based on standard commercial rapid switching parameters)
• Chassis Burn Position Limit: Universal — Operates reliably at any horizontal, vertical, or tilted mounting angle
• Fixture Safety Rating: Approved UV-Protected Enclosures Mandatory (FDA 21 CFR 1040.30 Radiation Performance Compliant)
• Manufacturing Craftsmanship Location: Premium Quality Certified Craftsmanship Made in Belgium

Operation, Safety & Mounting Compliance

Low-Frequency Square-Wave Electronic Ballast Stabilization

When retrofitted onto approved high-efficiency electronic pulse-start ballasts, this lamp processes power over precise low-frequency square waves, completely preventing internal acoustic arc resonance and visual plasma shifting loops typical under old magnetic line signals. This advanced electronic stabilization maintains color-point integrity across your entire track spot row, ensuring adjacent display displays project matched visual depth and crisp warm white properties without arc drift.

Mercury Content Dosing and Safe Bulk Recycling Protocols

This high-intensity capsule utilizes a finely metered internal mercury fill dose (limited to a 2.5 mg weight profile) to initiate its high-efficacy visibility track. While fully compliant with standard commercial building metrics and meeting Federal FDA radiation performance codes, the presence of mercury vapor dictates that spent lamps must be securely processed through certified regional commercial bulk recycling repositories during facility maintenance change-out sweeps rather than discarded into standard municipal solid waste streams or common landfills.

Commercial Equipment Industry Cross-References

This premium 20W ceramic metal halide GU6.5 bulb serves as a direct drop-in replacement or alternative for the following lines:

• Osram  alternative: HCI-Tm 20W/830 WDL PB GU6.5 Powerball Series / Osram Equivalent
• GE Lighting Match: GE 85086 CMH20/T/U/830/GU6.5 ConstantColor Ceramic Line / Catalog Code 41334
• Sylvania Reference: MC20TF/U/GU6.5/830 #64977 High Performance Pulse-Start Equivalent

Bulk Commercial Lighting Supply & Project Support

ADL Supply delivers commercial-volume logistical fulfillment, tiered commercial contractor discounting strategies, and full pallet project quoting options to electrical accounts across the United States.

For formal wholesale inquiries, volume pricing modifications, or manufacturer spec sheet documentation, reach our commercial branch directly at 1-800-235-3489. We are your commercial supply partners as an authorized wholesale Lighting Distributor In Doral, Florida.