PHILIPS MASTERCOLOR CDM-TC | 70W G8.5 Ceramic Metal Halide | 4200K

The Philips MasterColor CDM-TC 70W/942 (20885-0) is a compact, high-efficiency ceramic metal halide lamp designed to provide crisp, sparkling 4200K cool white light. Featuring a G8.5 bi-pin base, this T4-shaped bulb is significantly smaller than industry-standard lamps, making it ideal for sleek, unobtrusive retail display and architectural fixtures. With a high 90 CRI and integrated FadeBlock technology, it ensures exceptional color rendering while protecting merchandise from UV-related fading. Engineered for stability, this lamp maintains its color within ±200K over its 12,000-hour rated life, offering a long-lasting, energy-efficient alternative to traditional halogen lighting.

Product Overview

The Philips CDM70/TC/942 stands out for its superior light quality and compact form factor. It is specifically built for enclosed luminaires and must be operated on a thermally protected ballast to ensure safety and peak performance. Its 4200K cool white output is perfect for creating an energetic, daylight-like atmosphere in specialty retail spaces and outdoor architectural highlights. Made in Belgium, this lamp follows the highest manufacturing standards to deliver consistent lumen maintenance and energy-efficient operation that significantly reduces total cost of ownership over its lifetime.

• Compact G8.5 Design: Up to 40% smaller than standard lamps, allowing for more precise luminaire optics.
• Superior Color Quality: 90 CRI ensures textures and colors appear vivid and true to life.
• UV Block Technology: FadeBlock design significantly reduces ultraviolet radiation, protecting fabrics and sensitive displays.
• Efficient Performance: High luminous efficacy provides powerful lighting with lower electricity usage.

Technical Specifications

• Brand: Philips MasterColor
• Model: CDM-TC 70W/942 (20885-0)
• ANSI Code: C139/E
• Wattage: 70W
• Base Type: G8.5 (Ceramic Bi-Pin)
• Color Temperature: 4200K (Cool White)
• CRI: 90
• Rated Average Life: 12,000 Hours
• MOL (Length): 3.34 inches
• Diameter: 0.5 inches
• Bulb Finish: Clear (T4)
• Fixture Requirement: Enclosed Luminaires Only

Safety & Installation Guide

• Ballast Compatibility: Requires a thermally protected electronic or magnetic ballast rated for ANSI C139/E.
• UV Warning: This lamp emits ultraviolet radiation. Do not use if the outer envelope is broken. Adequate shielding is required to prevent skin and eye irritation.
• Handling: Do not touch the bulb with bare hands; skin oils can cause the glass to fail prematurely. Use clean gloves for installation.
• Compliance: Complies with FDA performance standard 21 CFR subchapter J and Canadian SOR/DORS/80-381.

Ideal Applications

• Specialty Retail: Accent and display lighting for high-end merchandise.
• Architectural Highlights: Outdoor wall washing and structural lighting (in enclosed fixtures).
• Galleries & Museums: Precision lighting for exhibits with UV protection.
• Commercial Spaces: General indoor area lighting where high color accuracy is required.