GE 44386 Q100CL/DC/2V

The GE 44386 Q100CL/DC/2V-ESR-120V is a professional-grade 100W T4 halogen projection lamp engineered for overhead projection systems, stage and entertainment lighting, medical and dental equipment, photography and studio lighting, and commercial specialty display fixtures. Delivering 1,800 initial lumens of 2950K warm white output at 100 CRI through a BA15d double-contact bayonet base with a CC-2V filament, this ANSI ESR-coded lamp provides a 750-hour rated service life on standard 120V line voltage.

ADL Supply Expert Application & Replacement Guide

The GE Q100CL/DC/2V-ESR-120V (Order Code 44386) is primarily used by AV equipment technicians, stage lighting crews, biomedical equipment service teams, and photography studio maintenance personnel as the standard replacement lamp in overhead projectors, theatrical fixtures, dental and medical instrument lights, studio lighting heads, and commercial display fixtures where the ANSI ESR code and BA15d double-contact bayonet base are the authoritative equipment specifications. The BA15d double-contact bayonet base has a 15mm cap diameter with two contact pins positioned diametrically opposite on the base — this is distinct from the BA15s single-contact bayonet (one center pin) and from all screw-in and bi-pin base formats. The double-contact design provides two separate electrical connections, which in polarity-sensitive projection equipment ensures correct filament orientation relative to the optical axis. Confirm your fixture socket is specifically BA15d (double-contact) before ordering. This lamp operates on standard 120V line voltage with no transformer required and delivers instant full brightness — production and medical facilities should track runtime hours and replace on a scheduled interval before the 750-hour rated life threshold.

Detailed Product Specifications

• Brand: GE Lighting
• Product Line Series: Halogen T4 Projection — Professional Series
• Model / Product Code: Q100CL/DC/2V-ESR-120V
• GE Order Code: 44386
• UPC Barcode: 043168443869
• ANSI Code: ESR
• Core Technology: Tungsten-Halogen T4 Clear Projection
• Wattage: 100W
• Operating Voltage: 120V
• Initial Lumens: 1,800 lm
• Color Temperature (CCT): 2950K Warm White
• Color Rendering Index (CRI): 100 Ra
• Filament Type: CC-2V
• Base Type Configuration: BA15d Double-Contact Bayonet (15mm cap diameter)
• Bulb Shape: T4 Clear
• Maximum Overall Length (MOL): 2.44 inches (62.0mm)
• Bulb Diameter: 0.50 inches (12.7mm)
• Rated Average Lifespan: 750 Hours (Calibrated)
• Burn Position: Universal — Any Orientation
• Mercury Content: None — standard e-waste disposal applies

Operation, Safety & Mounting Compliance

BA15d Base Specificity & Quartz Handling

The BA15d double-contact bayonet base locks the lamp into the socket via a quarter-turn push-and-rotate mechanism with two contact pins engaging two separate socket contacts. The double-contact (BA15d) configuration is not interchangeable with single-contact (BA15s) bayonet sockets — the single-contact socket has only one center contact and will not make a complete circuit with the BA15d lamp's two-pin base. In projection systems, the double-contact design ensures consistent polarity alignment of the filament with the fixture's optical axis. Never handle the quartz glass T4 envelope with bare skin — skin oils deposit alkaline residues that bond permanently to the quartz surface during thermal cycling, creating localized hot spots that accelerate premature envelope failure. Always relamp using clean cotton gloves or a lint-free cloth. Allow a minimum 15-minute cool-down before relamping.

Industry Cross-Reference Data

• Osram Sylvania: 54786 / ESR 100W 120V BA15d T4 (equivalent ANSI ESR halogen projection lamp)
• Philips: 100T4/DC-120V/ESR (equivalent 100W 120V T4 BA15d ANSI ESR)
• Ushio: ESR 100W 120V BA15d (equivalent ANSI ESR T4 projection platform)
• Legacy Cross-Reference: Direct replacement for ANSI ESR-coded 100W 120V BA15d double-contact bayonet T4 halogen lamp positions in overhead projectors, stage lighting, medical equipment, and photography studio fixture hardware

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