Ushio 1000612 JDR/M12V-20W/BA/FL30/FG

The Ushio 1000612 JDR/M12V-20W/BA/FL30/FG is a 20W 12V low-voltage halogen MR11 mini reflector lamp engineered for accent, architectural, display case, track, museum, and gallery lighting applications requiring a tight 30° narrow spot beam in a compact MR11 format. Featuring a faceted back-aluminized (BA) reflector for concentrated forward beam output and a closed front glass (FG) for UV containment, this Japan-manufactured lamp operates at 2900K warm white with 100 CRI through a GZ4 miniature 2-pin base.

ADL Supply Expert Application & Replacement Guide

The Ushio JDR/M12V-20W/BA/FL30/FG (Order Code 1000612) is primarily used by lighting designers, electrical contractors, and facility maintenance teams for compact accent track heads, display showcase downlights, museum and gallery spotlights, jewelry case accents, and landscape fixtures where the MR11 format's smaller 35mm reflector diameter and GZ4 mini 2-pin base provide a more discreet fixture profile than the standard MR16 format. The GZ4 miniature 2-pin base uses 4mm pin spacing — distinct from the GX5.3 (5.3mm) used on standard MR16 halogen lamps; the GZ4 lamp will not seat in a GX5.3 socket and vice versa. The /BA suffix indicates a back-aluminized reflector coating that reflects light forward and reduces rearward light spill into the fixture housing — useful in display cases and track heads where rearward heat and light transmission is undesirable. The /FG suffix indicates a closed front glass cover that provides UV containment, making this lamp suitable for open-face track and accent applications where a separate UV-filtering fixture lens is not provided. This lamp requires a 12V low-voltage transformer rated for 20W halogen MR11 loads.

Before You Order

Detailed Product Specifications

• Brand: Ushio America
• Product Line Series: JDR Halogen MR11 Mini Reflector
• Lamp Designation: JDR/M12V-20W/BA/FL30/FG
• Ushio Order Code: 1000612
• Ushio SKU: UHB1000612
• Core Technology: Tungsten-Halogen MR11 — Faceted Back-Aluminized Reflector, Closed Front Glass
• Wattage: 20W
• Operating Voltage: 12V Low Voltage
• Beam Angle: 30° Narrow Spot (FL30)
• Reflector Type: Faceted Back-Aluminized (BA)
• Front Glass: Closed (FG) — integral UV-containing cover glass
• Color Temperature (CCT): 2900K Warm White
• Color Rendering Index (CRI): 100 Ra
• Base Type Configuration: GZ4 Miniature 2-Pin (4mm pin spacing)
• Rated Average Lifespan: Confirm with Ushio specification sheet
• Burn Position: Universal — Any Orientation
• Country of Origin: Japan
• Mercury Content: None — standard e-waste disposal applies

Operation, Safety & Mounting Compliance

GZ4 vs GX5.3 Base, 12V Transformer & Closed Front Glass

The GZ4 mini 2-pin base is mechanically smaller than the GX5.3 used on standard MR16 lamps — the 4mm pin spacing vs 5.3mm means these bases are physically non-interchangeable. This lamp requires a 12V step-down transformer rated for 20W halogen MR11 loads; both magnetic (toroidal) and electronic low-voltage transformers are compatible provided the transformer's minimum load threshold is met. The closed front glass (FG) on this lamp serves as an integral UV barrier, distinguishing it from open-face JDR variants that require the fixture to provide UV containment — this lamp is suitable for use in open-face accent track heads and display case spotlights where no separate UV filter lens is present. Never handle the quartz envelope or reflector body with bare skin — skin oils create localized hot spots that accelerate premature envelope failure.

Industry Cross-Reference Data

• Osram Sylvania: 20MR11/FL30/FG GZ4 (equivalent 20W 12V GZ4 MR11 30° narrow spot with cover glass)
• GE Lighting: Q20MR11/FL30/FG GZ4 (equivalent 20W 12V faceted MR11 with front glass)
• Philips: 20MR11/FL30 GZ4 FG (equivalent 20W 12V GZ4 MR11 narrow spot front glass)
• Legacy Cross-Reference: Direct replacement for 20W 12V GZ4 mini 2-pin MR11 30° narrow spot halogen lamp positions with closed front glass in accent track, display showcase, gallery, and landscape fixture hardware

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