0805 / Micro Pre-wire SMD LEDs 9-18v

0805 Micro pre-wired SMD LEDs are the largest and easiest-to-handle pre-wired SMD LED we carry, measuring 2.0mm × 1.25mm.

Read full description & FAQ ↓

11 Items

0805 Micro pre-wired SMD LEDs are the largest and easiest-to-handle pre-wired SMD LED we carry, measuring 2.0mm × 1.25mm. Each LED ships with a current-limiting resistor and fine 34 AWG stranded, insulated wire (red +, black −) already attached, sold in packs of 5. Connect the leads to 12V DC (red to +, black to −) and the LED produces a bright, clean glow. No resistor calculations, no surface-mount rework station, no soldering to the LED die. The 0805 Micro is the recommended starting point for hobbyists new to SMD pre-wired LEDs — large enough to handle with tweezers without magnification, yet still dramatically smaller than any through-hole DIP LED. It is the best choice for HO scale (1:87) model railroad buildings, dollhouse miniatures, LEGO lighting projects with more room, and any application where you want the compact footprint of an SMD LED with the easiest possible handling experience.

The beginner-friendly SMD option: If you have never worked with SMD LEDs before, the 0805 is where to start. At 2.0mm × 1.25mm, it is visible to the unaided eye, easy to pick up with standard fine-tipped tweezers, and large enough to position accurately without magnification. Compare this to the 0402 Pico (1.0×0.5mm), which is essentially invisible without magnification and requires a steady hand and specialized technique. The 0805 gives you the benefits of SMD pre-wired lighting — tiny footprint, fine 34 AWG wire leads, flush ceiling mounting — with handling characteristics closer to what you are accustomed to with DIP LEDs. Many hobbyists start with 0805 LEDs and then move to 0603 or 0402 as their confidence grows.

Model railroad and HO scale applications: The 0805 is a natural fit for HO scale (1:87) model railroad building interiors. At 2.0mm wide, it mounts flat on a ceiling surface with a microdot of CA glue, producing a low-profile overhead light effect. The LED body is less than half the size of a 3mm DIP LED, making it far less visible through windows and doorways. Station buildings, freight depots, residential houses, commercial structures, passenger cars, and locomotive cabs all benefit from the compact 0805 ceiling light. The fine wire routes along ceiling joists, through wall cavities, and under baseboard surfaces to the 12V accessory bus. For O gauge (1:48) and S scale (1:64), the 0805 provides an ultracompact alternative to the 3mm DIP LED where ceiling clearance is tight.

LEGO lighting and dollhouse miniatures: LEGO builders who want SMD-level miniaturization without the extreme difficulty of the 0402 use 0805 pre-wired LEDs. The LED fits behind transparent LEGO elements, inside technic beam cavities, and within larger brick assemblies. The fine 34 AWG wire is easy to route and solder while still being thin enough to conceal between LEGO layers. Dollhouse builders at 1:12 scale use 0805 LEDs for ceiling fixtures, reading lamps, cabinet interior lights, and display case illumination. The 0805 is small enough to hide inside most miniature light fixture housings while producing ample light to fill a scale room.

Brightest SMD pre-wired option: The 0805 package produces the brightest output of the three SMD pre-wired sizes. The larger die area emits more light than the 0603 or 0402, making the 0805 the best choice for applications where maximum brightness from a tiny package is the priority. Diorama scenes needing to light larger interior volumes, model railroad buildings with deep interiors, and display projects requiring bright accent lighting all benefit from the 0805’s higher output. If brightness is less important than absolute minimum size, step down to the 0603 Nano or 0402 Pico.

Working with 0805 LEDs: Handle with fine-tipped tweezers. Mount with a dab of CA (super glue) gel or white tacky putty. The leads are insulated wire, not magnet wire: strip the last 3–5mm of insulation from each wire end with a sharp hobby knife or a precision stripper for very fine wire, then pre-tin with solder. Route the wire along surfaces using small dabs of glue. The 0805 is comfortable to work with in normal light without magnification, though a desk magnifier lamp is always helpful for precision placement. No specialized SMD rework tools are required.

Specifications: Package size: 0805 (2.0mm × 1.25mm). Wire type: approximately 34 AWG stranded, insulated wire (red +, black −), about 0.27 mm (0.011 in) thick including insulation. Operating voltage: 12V DC. Built-in resistor: yes. Sold in packs of 5. Polarity: red wire = positive (+), black wire = negative (−). To extend wire length, splice on thin hookup wire. Solid-on 0805 LEDs work directly on DCC track power too, but for the steadiest light wire them through a bridge rectifier (the RGB color-changing ones need DC: the rectifier plus a smoothing capacitor; see the AC/DCC wiring guide).

Related categories: For a smaller SMD pre-wired LED, see 0603 Nano (1.6×0.8mm, most popular) and 0402 Pico (1.0×0.5mm, smallest available). For larger DIP pre-wired LEDs, browse 12V pre-wired LEDs in 3mm, 5mm, and 10mm. For all pre-wired SMD sizes, return to the pre-wired SMD LEDs hub. For bare SMD component LEDs, see SMD LEDs. For animated pre-wired effects, browse animated pre-wired LEDs.

Frequently Asked Questions

No. Each LED includes a current-limiting resistor attached inline. Connect the red lead to +12V DC and the black lead to ground, and the LED operates at rated current automatically. No external components needed.
Yes. The 0805 (2.0×1.25mm) is large enough to see and handle with standard tweezers without magnification. The 0603 (1.6×0.8mm) is manageable but benefits from magnification. The 0402 (1.0×0.5mm) essentially requires magnification and very steady hands. If you are new to SMD pre-wired LEDs, start with 0805.
Generally yes. The larger 0805 die area produces more light output. If maximum brightness from an SMD package is your goal, 0805 is the best choice. For applications where minimum size is more important than brightness, choose 0603 or 0402.
Yes. The 0805 (2.0×1.25mm) is an excellent choice for HO scale (1:87) building interiors. It is less than half the size of a 3mm DIP LED, mounts flat on the ceiling, and produces a realistic overhead-light effect. The wire leads route to your 12V accessory bus or to DCC power, ideally through a bridge rectifier.
Strip the insulation from the last 3–5mm of each wire end with a sharp hobby knife or a precision stripper for very fine wire. Pre-tin the bare copper with solder. Then solder the tinned end to your power bus wire, terminal strip, or connector. The process takes about 30 seconds per wire end.
We stock warm white, cool white, red, green, blue, yellow, and amber. Warm white is the most popular for building interior lighting. Cool white suits modern and commercial settings. Check the category page for the full selection and current availability.