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2.7 × 2.4 mm 4 pins top-emitting

WS2816B-2427

2427 · smd · WS2816 · WorldSemi

1-wire RGB 3.3–5.5 V backup data line active

Also sold as WS2816B 2427

At a glance

Colour
RGB16 bits per channel
Data
1-wiretimed pulses on one line
Supply
3.3–5.5 Vbackup data line
Size
2.7 × 2.4 × — mm4 pins · top
Max current
—per-channel not recorded
PWM
10 kHzreset 280 µs
Library support
FastLED WLED Adafruit

Four-pin 16-bit part in the 2427 package: DIN, VDD, DOUT, GND (no backup line).

Variants

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

Order codeFaceLensWhite PinsSiliconStatusFirst seenDatasheet
WS2816B-2427 — — — 4 — active 2022-04-26 PDF
Stock 3,005 when checked.

Pinout

WS2816B-2427
WS2816B-2427 2427 package, top and side viewPin 1 is ringed. pin 1 DIN (data in), pin 2 VDD (power), pin 3 DOUT (data out), pin 4 GND (ground).11 DINdata in22 VDDpower33 DOUTdata out44 GNDground2.7 mm2.4 mmtop view
  • Data
  • Power
  • Ground
  • Pin 1
  • Cut corner

Outline drawn from the package family and the recorded dimensions; not yet checked against a datasheet. Pad sizes are approximate. Assumed to share the WS2812C-2427 outline; its own sheet was not read. What this means.

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

Protocol — WS2816

Timings shown from datasheet.

WS2816 bit timingWS2816 bit timing: a zero bit is 260 nanoseconds high then 1000 low; a one bit is 660 high then 740 low; reset 280 microseconds low1 · Bit encoding, to scaleDINhighlowbit 0 period 1260 nsbit 1 period 1400 nsT0H 260 nsT1H 660 nsT0L 1000 nsT1L 740 ns"0" bit"1" bit02505007501000125015001750200022502500time, nsDatasheet lists unequal bit periods (1260 vs 1400 ns); each bit is drawn with its own.2 · One frame: 48 bits, most-significant bit firstDIN115011001010110010001510011010100110101150010110100101100bitch 1 · 16 bitsch 2 · 16 bitsch 3 · 16 bitsChannel order not recorded for this protocol · frame = 48 × ~1400 ns ≈ 67.2 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 ≥ 280 µs (not to scale)4 · Cascade: each DOUT feeds the next DINMCULED 1DINDOUTLED 2DINDOUTLED NDINDOUTLED 1 keeps the first 48 bits, re-shapes the signal and sends the rest out on DOUT;LED 2 keeps the next 48, and so on. The last LED's DOUT is left unconnected.BIN (backup): tied to the previous pixel's DIN
T0H 260 / T0L 1000 · T1H 660 / T1L 740 ns · reset 280 µs source: datasheet

Compatibility

  • electrically similar WS2813

    Both have a backup (breakpoint-resume) data line in the 6-pin and 6-pad packages, but the WS2816 frame is 48 bits per pixel against 24, so the data stream is not interchangeable. The 4-pin and 5-pin WS2816 variants have no backup input at all.

  • electrically similar of this WL-ICLED (48-bit, bypass pin)

    Both are 6-pin single-wire parts with a second input and 12-16 bit channels, but the WS2816 frame is 16-bit per channel with its own backup semantics and this sheet specifies 12-bit PWM plus a 4-bit current gain. Not interchangeable on the wire.

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.

  • 2020-01-06 datasheet revision WorldSemi WS2816C-2121 datasheet (LCSC C965561) Modify Record: 'V1.0 N New-Official release 20200106' ↗ day
  • 2022-04-26 datasheet revision WorldSemi WS2816B-2427 datasheet Modify Record: V1.0 "New" ↗ 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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