Sylvania RefLED Superia Retro MR16 GU5.3 6.1W Dimmable 12V – replaces 50W
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The Sylvania RefLED Superia Retro MR16 is Sylvania's premium dimmable LED MR16 designed for professional use, replacing a traditional 50W GU5.3 halogen lamp. This is the dimmable version of the Superia MR16 series — its all-glass construction, 25,000-hour lifespan, and five-year warranty, combined with dimming capability, make it a reliable choice for applications where lighting control is important. Available in four color temperature variants, including an extra warm 2700K.
GU5.3 base. Operates on 12V AC/DC. Requires a transformer. Dimmable with approved LED-compatible dimmers.
⚠ Order product
This product is an order product — delivery time approximately 1 week from order. Availability can be checked in the shopping cart.
✓ Dimmable — with approved LED dimmers
This is the only dimmable Superia MR16 model in our selection. Only works with LED-compatible dimmers — old halogen dimmers may not work reliably. Check dimmer compatibility before ordering or contact our customer service.
✓ Premium class — 5-year warranty, 25,000 h lifespan
Sylvania's Superia series is designed for professional durability: 67% longer lifespan (25,000 h vs Retro 15,000 h), 2× more switching cycles (over 100,000), and a 5-year warranty (vs 3 years).
Technical specifications
- Replaces traditional 50W GU5.3 halogen lamp
- Lamp type: LED MR16 spotlight (Superia DIM, professional use, dimmable)
- Brand: Sylvania
- Series: RefLED Superia Retro MR16
- Base: GU5.3 (two-pin, 5.3 mm pins)
- Voltage: 12 V AC/DC (requires a transformer)
- Power: 6.1 W
- Luminous flux: 621 lm
- Color temperature: 2700 K, 3000 K, 4000 K or 6500 K (selectable)
- Beam angle: 36° (wide spotlight)
- Color rendering index (CRI): 80
- Lifespan: 25,000 hours
- Switching cycles: over 100,000
- Lamp construction: all-glass body (no plastic)
- Compatibility: 12V transformers (magnetic or electronic)
- Dimmable: Yes (with approved LED-compatible dimmers)
- Warranty: 5 years
- Diameter: 44 mm
- Length: 50 mm
- Product codes: 2700K = 0031821 / 3000K = 0031822 / 4000K = 0031823 / 6500K = 0031824
Compatibility and installation
Dimmable — what does this mean in practice?
This lamp is designed to work with dimmers — you can smoothly adjust the light level between minimum and maximum brightness. Important considerations:
- An LED-compatible dimmer circuit is required — old halogen dimmers may not work reliably with this lamp
- Dimming may cause slight flickering or stuttering at low power levels — this is a common phenomenon in LED dimming
- The minimum power threshold is typically around 10–15% — below this, the lamp may turn off completely
- Check compatibility — Sylvania maintains a list of approved dimmers, contact our customer service if you have any doubts
Compatible dimmers can be found in the Electrical Supplies → Dimmers category.
Typical applications for dimmed lamps
- Restaurants and hotels — dimmer lighting during evenings, brighter during the day
- Households — ambient lighting for living rooms and bedrooms
- Meeting rooms — light is adjusted during presentations and video conferences
- Shops and gallery display areas — highlighting different product categories
- Home theaters and entertainment areas — light level during movies and video games
When to choose dimmable, when not?
Sylvania offers both dimmable and non-dimmable models in the Superia MR16 series:
- Dimmable (this one, 6.1W DIM): when the fixture has a dimmer or you plan to add one — households, restaurants, hotels, meeting rooms
- Non-dimmable (6W): when the fixture does not have a dimmer — offices, shops, warehouses, corridors. Slightly more affordable (8.58 € vs 10.60 €).
If the fixture does not have a dimmer and you do not plan to add one, the non-dimmable model is a more affordable option.
4 color temperature variants — for all uses
- 2700K (extra warm, incandescent-like): households, restaurants, hotels, vintage fixtures
- 3000K (warm white): most common for ambient lighting
- 4000K (natural white): offices, meeting rooms, shops
- 6500K (daylight): museums, gallery staff rooms, areas requiring precise work
Superia class — for professional use
This is Sylvania's premium class LED, which withstands the demands of professional use:
- Lifespan 25,000 h — 67% longer than standard Retro
- Switching cycles over 100,000 — double that of standard Retro
- 5-year warranty — longer than standard 2–3 year LED warranties
MR16 size with 44 mm diameter
This lamp is a compact MR16 version — slightly smaller (44 mm) than standard MR16 (51 mm), but maintains MR16 compatibility with its GU5.3 base.
Requires a 12V transformer
This is a 12V low-voltage lamp that requires a 12V transformer to operate. Works with both magnetic and electronic transformers, but compatibility with electronic transformers depends on the exact model of the transformer. The most common compatible brands are Helvar, Tridonic, Osram, Ledvance, and Vossloh-Schwabe.
Transformer and dimmer — both must be LED-compatible
In a dimmable system, both components must be LED-compatible:
- Transformer: 12V LED-compatible (magnetic or electronic)
- Dimmer: LED-compatible — old halogen dimmers may not work
If you have doubts about system compatibility, contact our customer service — we will help you choose the right accessories.
Glass body — premium quality
The all-glass body produces a more even light distribution than plastic, does not yellow over time, and gives a halogen-like appearance.
Replaces 50W GU5.3 halogen — 88% energy savings
This 6.1W LED produces the same luminous output (621 lm) as a traditional 50W GU5.3 halogen. Energy savings are approximately 88%, and the lifespan is 6–12 times longer.
36° beam angle — wide spotlight
Flood-class spotlight, suitable for general lighting, ambient lighting, and spotlights.
Installation checklist
- Check that the fixture has a GU5.3 base (not GU4 or GU10)
- Check that a 12V transformer is in use (magnetic or electronic)
- Check that the transformer's wattage is sufficient for the total wattage of the lamps
- Check that the dimmer is LED-compatible
- Check that the dimensions of the fixture (44 mm diameter, 50 mm length) fit
- Turn off the power before installation — do not touch the lamp glass with your fingers
- Install the lamp and turn on the power
- Test the dimming function at different levels — check that the lamp does not flicker annoyingly
Also check out our selection of other GU5.3 LED spotlights and dimmers.
Delivery
We ship your order from our warehouse in Jyväskylä. Orders placed before 2 PM are usually shipped on the same day. Free delivery within Finland for orders over €150.
Warranty
Products purchased through Lumenled come with a manufacturer's warranty, supported by Lumenled in cooperation with the importer. You can find detailed warranty terms here: Warranty terms of our partners.