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5.0 × 5.0 mm 4 pins top-emitting

XL-5050UWC-2812B

5050 · smd · Xinglight 5050 UWC white (5 V, 3 x 12 mA, 0.25/0.47 us windows) · Xinglight

1-wire W 3.5–5.5 V active

Also sold as XL-5050UWC-WS2812B

At a glance

Colour
W8 bits per channel
Data
1-wiretimed pulses on one line
Supply
3.5–5.5 Vno backup data line
Size
5.0 × 5.0 × 1.6 mm4 pins · top
Max current
36 mA12 mA per channel
PWM
1.5 kHzreset 80 µs
Library support
FastLED WLED Adafruit

Datasheets disagree with themselves on pin order: the p12 table numbers DOUT as pin 1, VDD 2, DIN 3, GND 4, while the labelled drawing (p11) puts VDD, DI, DO, GND at the corners in the WS2812B arrangement (VDD top-left, GND bottom-right, cut corner at GND). Pin numbers here follow the table, pad positions follow the drawing.

Variants

One row per orderable SKU. Everything not listed is inherited from the part above.

Order codeFaceLensWhite PinsSiliconStatusFirst seenDatasheet
XL-5050UWC-2812B — — — 4 — active 2025-10-15 PDF
White-only pixel, not an RGB part. Colour order is not stated. LCSC stock 1,475 on 2026-10-15.

Pinout

XL-5050UWC-2812B
XL-5050UWC-2812B 5050 package, top and side viewPin 1 is ringed. pin 1 DOUT (data out), pin 2 VCC/VDD (power), pin 3 DIN (data in), pin 4 GND/VSS (ground).11 DOUTdata out22 VCC/VDDpower33 DINdata in44 GND/VSSground5.4 mm overall5.0 mmtop view1.6 mmside view
  • Data
  • Power
  • Ground
  • Pin 1
  • Cut corner

Outline and pin positions checked against the manufacturer datasheet (C22461792 XL-5050UWC-WS2812B p11 (labelled top view) and p12 pin table). Pin table 1 DOUT, 2 VCC/VDD, 3 DIN, 4 GND; the labelled top view has VDD top-left, DI top-right, DO bottom-left, GND bottom-right, cut corner bottom-right. Pads are placed by those labels; the table numbering is not a ring from pin 1. Sheet does not number the drawing; the table numbering (DOUT = 1) differs from the WS2812B (VDD = 1) and from the cut corner convention. What this means.

  1. 1 DOUT data out
  2. 2 VCC/VDD power
  3. 3 DIN data in
  4. 4 GND/VSS ground

Protocol — Xinglight 5050 UWC white (5 V, 3 x 12 mA, 0.25/0.47 us windows)

Timings shown from datasheet.

Xinglight 5050 UWC white (5 V, 3 x 12 mA, 0.25/0.47 us windows) bit timingXinglight 5050 UWC white (5 V, 3 x 12 mA, 0.25/0.47 us windows) bit timing: a zero bit is 250 nanoseconds high then 1000 low; a one bit is 850 high then 400 low; reset 80 microseconds low1 · Bit encoding, to scaleDINhighlowbit 0 period 1250 nsbit 1 period 1250 nsT0H 250 nsT1H 850 nsT0L 1000 nsT1L 400 ns"0" bit"1" bit02505007501000125015001750200022502500time, ns2 · One frame: 8 bits, most-significant bit firstDIN1701100100bitch 1 · 8 bitsChannel order not recorded for this protocol · frame = 8 × ~1250 ns ≈ 10 µs · example data, first bits 1 0 1 …3 · RESET / latchlast bits of frame 1first bits of frame 2LEDs latch the data they receivedRESET: DIN low ≥ 80 µs (not to scale)4 · Cascade: each DOUT feeds the next DINMCULED 1DINDOUTLED 2DINDOUTLED NDINDOUTLED 1 keeps the first 8 bits, re-shapes the signal and sends the rest out on DOUT;LED 2 keeps the next 8, and so on. The last LED's DOUT is left unconnected.
T0H 250 / T0L 1000 · T1H 850 / T1L 400 ns · period 1250 ns · reset 80 µs source: datasheet

Dating evidence

Nobody announces these parts, so this records what we can actually cite rather than a release date. Library support proves only that the part existed by that date.

  • 2025-10-15 estimate PDF CreationDate metadata of Xinglight sheet XL-5050UWC-2812B (LCSC C22461792); the sheet has no revision table, so this is only the date the PDF file was produced ↗ day

Where to buy

Stub data — a few rows so purchase links can grow later. Prices are not tracked.

Similar parts

Same protocol or package first, then the same data scheme and colour channels.

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