Sylvania RefLED Superia Retro MR16 GU5.3 6.1W Dimmable 12V – replaces 50W
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The Sylvania RefLED Superia Retro MR16 is a professional-grade, premium dimmable LED MR16 designed by Sylvania, serving as a replacement for traditional 50W GU5.3 halogen lamps. This is the dimmable version of the Superia MR16 series—a full-glass construction, 25,000-hour service life, and a five-year warranty combined with dimming capability make this a reliable choice for settings where lighting control is essential. 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.
⚠ Made to order
This product is a made-to-order item—delivery time is approximately 2 weeks from order. You can check availability in the shopping cart.
✓ Dimmable — with approved LED dimmers
This is the only dimmable Superia MR16 model in our range. Works only with LED-compatible dimmers—older halogen dimmers may not function reliably. Please check dimmer compatibility before ordering or contact our customer service.
✓ Premium class — 5-year warranty, 25,000 h service life
Sylvania's Superia series is designed for professional durability: 67% longer service life (25,000 h vs. 15,000 h for Retro), 2× more switching cycles (over 100,000), and a 5-year warranty (vs. 3 years).
Technical specifications
- Replaces a traditional 50W GU5.3 base halogen lamp
- Lamp type: LED MR16 spotlight (Superia DIM, professional use, dimmable)
- Brand: Sylvania
- Series: RefLED Superia Retro MR16
- Base: GU5.3 (bi-pin, 5.3 mm pin spacing)
- Voltage: 12 V AC/DC (requires 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
- Service life: 25,000 hours
- Switching cycles: over 100,000
- Lamp structure: full-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
⚠️ 6500K MINIMUM ORDER QUANTITY 6 PCS.
PURCHASES UNDER 6 PCS ARE POSSIBLE, PLEASE CONTACT CUSTOMER SERVICE.
Compatibility and installation
Dimmable — what does this mean in practice?
This lamp is designed to work with dimmers—you can adjust the light level steplessly between minimum and maximum brightness. Important considerations:
- An LED-compatible dimmer circuit is required — older halogen dimmers may not function 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 limit is typically about 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 are unsure
You can find compatible dimmers in the Electrical Supplies → Dimmers category.
Typical applications for dimmable lamps
- Restaurants and hotels — lower lighting during evening hours, brighter during the day
- Households — ambient lighting for living rooms and bedrooms
- Conference rooms — adjusting light during presentations and video conferences
- Stores and gallery showrooms — highlighting different product categories
- Home theaters and entertainment areas — light levels during movies and video games
When to choose dimmable and when not to?
In the Superia MR16 series, Sylvania offers both dimmable and non-dimmable models:
- Dimmable (this one, 6.1W DIM): when the luminaire has a dimmer or you intend to add one—households, restaurants, hotels, conference rooms
- Non-dimmable (6W): when the luminaire does not have a dimmer—offices, stores, warehouses, hallways. Slightly more affordable (€8.58 vs €10.60).
If the luminaire 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 purposes
- 2700K (extra warm, incandescent-like): households, restaurants, hotels, vintage fixtures
- 3000K (warm white): most common for ambient lighting
- 4000K (natural white): offices, conference rooms, stores
- 6500K (daylight): museums, staff areas in galleries, areas requiring precise work
Superia class — for professional use
This is Sylvania's premium-grade LED, built to withstand the demands of professional use:
- Service life 25,000 h — 67% longer than the standard Retro
- Switching cycles over 100,000 — double that of the 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 the 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. It works with both magnetic and electronic transformers, but compatibility with electronic transformers depends on the specific model. 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—older halogen dimmers may not work
If you have any doubts about system compatibility, please contact our customer service—we will help you choose the right accessories.
Glass body — premium quality
The full-glass body produces a more even light distribution than plastic, does not yellow over time, and provides 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 service life is 6–12 times longer.
36° beam angle — wide spotlight
A flood-type spotlight suitable for general lighting, ambient lighting, and accent lighting.
Installation checklist
- Check that the luminaire has a GU5.3 base (not GU4 or GU10)
- Check that a 12V transformer is in use (magnetic or electronic)
- Check that the transformer power is sufficient for the total power of the lamps
- Check that the dimmer is LED-compatible
- Check that the luminaire dimensions (44 mm diameter, 50 mm length) are compatible
- Turn off the power before installation—do not touch the lamp glass with fingers
- Install the lamp and switch the power on
- Test the dimming function at different levels—check that the lamp does not flicker annoyingly
Also check out our 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.