Osram 64322 EXL 30W 6.6A GZ9.5/GY9.5 T3.5 Halogen Airfield Series Circuit Lamp

Specifications

• Wattage: 30W
• Voltage: 7V
• Lamp Current: 6.6A (Constant Current Series Circuit)
• Initial Lumens: 430 lm (Nominal: 400 lm)
• Color Temperature: 2,950K (Warm White)
• Color Rendering Index (CRI): 100
• Average Rated Life: 1,500 Hours
• Base Type: GZ9.5 / GY9.5 — 2-Pin Prefocus Bi-Pin
• Bulb Shape: T3.5 — Clear
• Filament Design: C-8
• Max Overall Length (MOL): 1.75 in (44.5 mm)
• Light Center Length (LCL): 1.0 in (25.4 mm)
• Bulb Diameter: 0.45 in (13.5 mm)
• Burn Position: s90 — Vertical Base Down to Horizontal Only
• Dimmable: Yes
• Mercury-Free: Yes
• Osram Order Code: 64322
• Osram Secondary Code: 58850
• Full Part Number: 6.6A/30T3.5/64322/EXL/DL

The Osram 64322 EXL is a current-controlled, single-ended tungsten halogen lamp engineered specifically for airfield ground lighting applications. Operating at a constant 6.6 amperes in series circuit systems, it delivers reliable and consistent illumination across its full 1,500-hour lifespan — reducing maintenance intervals and operating costs. FAA and ICAO approved, mercury-free, and built for vibration resistance, it is a trusted standard across runway, taxiway, threshold, and approach lighting installations worldwide.

⚠️ Important: Series Circuit Compatibility

This lamp is designed exclusively for constant current series circuit airfield lighting systems operating at 6.6 amperes. It is not a standard voltage lamp. Before ordering, confirm that your airfield lighting circuit operates at 6.6A series current. Using this lamp in a non-series or incorrect current system will result in immediate lamp failure and may damage connected fixtures.

Key Features

• FAA & ICAO Approved in conjunction with many OEM airfield fixtures
• Precision Filament Alignment — manufactured on state-of-the-art equipment for consistent light output and optical accuracy
• Vibration Resistant — durable construction engineered to withstand the mechanical stresses of airfield environments
• Flicker-Free Operation — stable output throughout the full rated life
• IR Radiation Output — provides guidance capability in low-visibility and instrument approach conditions
• Dimmable — ability to reduce light output when operational conditions require it
• Mercury-Free — environmentally compliant; no hazardous disposal concerns
• Instant On — reaches full output immediately with no warm-up time

Airfield Applications

• Runway Edge Lighting
• Taxiway Edge & Centerline Lighting
• Runway Threshold & End Lighting
• Approach Lighting Systems (ALS)
• Runway Guard Lights
• Airfield Elevated & In-Pavement Fixtures
• Ground Support Equipment Lighting

Cross-Reference Part Numbers

This lamp is interchangeable with equipment specifying the following manufacturer part numbers:

• Osram / Sylvania: 64322 / 58850 / 55041
• GE / Tungsram: EXL / 11478
• Philips: 6112 / 6112LL
• Ushio: 1001641
• Amglo Kemlite: AHV6.6A30WD40CM
• ADB Airfield Solutions: 40830
• Crouse Hinds: 052300 / 40737 / 40938-B
• Damar: 03195A
• Hikari: A-6331
• Narva: 58312

Installation & Safety Notes

• Burn Position: s90 — must be operated vertical base-down to horizontal only. Operating outside this range will shorten lamp life and compromise performance.
• No Bare Hands: Never touch the quartz envelope with bare skin. Oils from your fingers create hot spots leading to premature failure. Use clean gloves or a lint-free cloth during installation.
• Verify Circuit Current: Confirm your system operates at 6.6A series current before installation. An incorrect current will destroy the lamp immediately.
• Precision LCL: The 1.0 in (25.4 mm) Light Center Length is critical for correct optical alignment in airfield fixtures. Always verify the replacement lamp matches this dimension.
• Handle With Care: Quartz halogen lamps are sensitive to vibration and impact during handling. Do not drop or shake. Inspect the envelope for cracks before installation.
• Extreme Heat: This lamp operates at very high temperatures. Never touch when lit or recently switched off.