Sylvania 58634 37MR16/IR/NFL25/C

Sylvania 58634 37MR16/IR/NFL25/C — TRU-AIM® IR MR16 37W 12V Halogen Infrared Reflector Lamp, GU5.3 Base, 25° Narrow Flood, 3000K, CRI 100

The Sylvania TRU-AIM® IR 37MR16/IR/NFL25/C (item number 58634) is a 37W 12V low-voltage tungsten halogen MR16 reflector lamp with an infrared reflective coating on the capsule. It uses a GU5.3 bi-pin base, produces a 25° narrow flood beam at 4400 centerbeam candlepower, and delivers 3000K light at CRI 100 with an average rated life of 5,000 hours. A UV-control capsule combined with the IR coating eliminates UV-B and UV-C radiation, and the hard coated dichroic reflector holds its color point across the life of the lamp rather than shifting. An axial filament produces an exceptionally smooth beam pattern, and the lamp is supplied with a clear cover glass for use in unshielded fixtures. Maximum overall length is 1.750 in with a 2 in reflector diameter. Confirm the beam angle, base, transformer capacity, and fixture ventilation before ordering.

Technical Specifications

Measured Operating Temperatures (37W)

Temperatures were measured in open air at 25°C (77°F) ambient using a Bender & Worth 884 socket, and are provided for reference only. Actual temperatures in a specific fixture will differ.

Product Overview

TRU-AIM IR lamps achieve their efficacy through thermal recovery. The tungsten halogen capsule is ellipsoidal and carries an infrared reflective coating, so radiated heat that would otherwise be lost is reflected back onto the filament. Because that heat is recycled inside the capsule, less electrical energy is needed to bring the filament to its operating temperature — which is how these lamps reach the centerbeam output that a higher wattage standard dichroic MR16 would require. Sylvania states that TRU-AIM IR lamps are a direct replacement for higher wattage standard dichroic MR16s with a reduction in energy consumption.

The filament is axially aligned between the focal points of the ellipsoidal capsule, with a return lead wire routed back down the center of the filament to optimize infrared reflection without interfering photometrically. Xenon fill gas in the burner further raises luminous intensity and efficacy. The practical result is an exceptionally smooth beam pattern without the striations or hot spots a transverse filament can produce.

Two features matter for merchandise and artwork. The hard coated dichroic reflector holds its color point across the life of the lamp instead of drifting, so a display relamped in year three still matches one relamped in year one, and lamps in adjacent fixtures match each other. The UV-control capsule combined with the IR coating eliminates UV-B and UV-C radiation, which reduces fading on UV-sensitive merchandise, textiles, and artwork. Together with a color rendering index of 100, that makes these lamps a common specification for retail display, galleries, and museum casework.

This item is the 25° narrow flood at 4400 centerbeam candlepower. Beam angle is the specification that most often determines which item number is correct, because centerbeam intensity changes substantially with beam spread at the same wattage. Other beam angles in the 37W family are item 58641 (Narrow Spot 10°, 12,500 cd), item 58633 (Flood 35°, 2200 cd), item 58837 (Wide Flood 60°, 1100 cd). The lamp is supplied with a clear cover glass, which is what the /C suffix denotes and what makes it suitable for unshielded fixtures where an uncovered MR16 would not be permitted.

Compatible Applications

• Highlighting merchandise and retail display lighting
• Accent and display lighting in track and adjustable downlight fixtures
• Highlighting heat sensitive merchandise
• Art galleries and museum casework, where UV control and color consistency matter
• Hotels and restaurants
• Decorative room lighting and ambient lighting
• Case lighting strips and display cabinetry
• Landscape lighting fixtures on 12V systems
• Unshielded fixtures requiring a covered lamp
• Energy-saving replacement for a higher wattage standard dichroic MR16

Before Ordering — Verify

• Confirm the beam spread required. This lamp is the 25° narrow flood (NFL) at 4400 cd. Other beam angles in the 37W family are item 58641 (Narrow Spot 10°, 12,500 cd), item 58633 (Flood 35°, 2200 cd), item 58837 (Wide Flood 60°, 1100 cd).
• Confirm the wattage tier. The same 25° beam is also made as item 58532 (20W, 2300 cd), item 54174 (50W, 5700 cd).
• Confirm the socket is GU5.3 bi-pin with 1/4 in maximum pin spacing. GU5.3 is not interchangeable with GU10 or other MR16 base types.
• Confirm the fixture is supplied by a 12V transformer or low-voltage supply. This lamp will not operate on line voltage.
• Confirm the transformer capacity accommodates 37W per lamp across the total lamp count.
• Confirm the fixture accepts a 2 in diameter MR16 with a 1.750 in maximum overall length, including the cover glass.
• Confirm whether a covered lamp is required. This item includes a clear cover glass; uncovered versions are separate order codes.
• Confirm fixture ventilation around the lamp neck. Infrared conserving capsules run hotter than standard halogen capsules of the same wattage because the recycled heat passes through the capsule glass twice.
• Confirm case quantity — this item is supplied 20 per case.

Safety and Handling Guidelines

• Disconnect power and allow the lamp to cool completely before handling or replacement. Halogen lamps run hot and stay hot well after switch-off.
• Do not touch the capsule or reflector glass with bare hands. Skin oils cause localized overheating and can lead to premature failure. Clean with isopropyl alcohol if the glass is touched.
• Handle the lamp by its reflector body or base, not the capsule.
• Ensure adequate ventilation around the lamp neck. Infrared conserving halogen capsules operate at a higher temperature than standard halogen capsules of the same wattage, and restricted airflow at the neck shortens lamp life.
• Operate on a 12V supply only. Overvoltage operation sharply reduces lamp life.
• Do not install a lamp with a cracked, scratched, or otherwise damaged reflector or cover glass.
• Keep combustible materials clear of the lamp and fixture.
• Follow the fixture manufacturer's instructions for lamp orientation and any position restrictions.
• This lamp contains no mercury. Recycle or dispose of it in accordance with local requirements.

Compliance

• UV-B and UV-C radiation eliminated by the UV-control capsule combined with the infrared coating.
• ECOLOGIC® designated — part of the Osram Sylvania program addressing environmental issues across lamp life.
• Contains no mercury. Not subject to mercury lamp disposal or shipping restrictions.
• Dispose of in accordance with local regulations.

Ordering Information

• Brand: Sylvania (Osram Sylvania)
• Item Number: 58634
• Order Abbreviation: 37MR16/IR/NFL25/C 12V
• UPC: 046135586347
• Family: TRU-AIM® IR MR16
• Case Quantity: 20 per case
• Lamp: 37W, 12V tungsten halogen MR16 IR, GU5.3 bi-pin base, axial filament, clear cover glass
• Optical: 25° narrow flood, 4400 cd centerbeam, 3000K, CRI 100
• Average Rated Life: 5,000 hours
• Other Beam Angles (37W): item 58641 (Narrow Spot 10°, 12,500 cd), item 58633 (Flood 35°, 2200 cd), item 58837 (Wide Flood 60°, 1100 cd)
• Other Wattages (25°): item 58532 (20W, 2300 cd), item 54174 (50W, 5700 cd)

For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.