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3.5 × 2.8 mm 4 pins top-emitting

BB-HRGB32M-TRB

3528 · smd · ABOC BB single-wire IC (RGB order) · American Bright Optoelectronics

1-wire RGB 4.5–5.5 V active

Also sold as BB-HRGB32M-TRB-C

At a glance

Colour
RGB8 bits per channel
Data
1-wiretimed pulses on one line
Supply
4.5–5.5 Vno backup data line
Size
3.5 × 2.8 × 1.9 mm4 pins · top
Max current
36 mA12 mA per channel
PWM
—reset 200 µs
Library support
FastLED WLED Adafruit

3.5 x 2.8 x 1.9 mm 3528 version of the BB cell: same IC tables as the 5050 part. Both SKUs were found only in the wider LCSC listing sweep; neither is in stock (0 on 2026-10-15).

Variants

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

Order codeFaceLensWhite PinsSiliconStatusFirst seenDatasheet
BB-HRGB32M-TRB — clear — 4 — active 2019-11 Ver1.0Ver1.0 ↗
LCSC C20866101, stock 0.
BB-HRGB32M-TRB-C — clear — 4 — active 2019-11 Ver1.0Ver1.0 ↗
LCSC C20718224, stock 0. DIN VIH lowered to 0.65 x VDD.

Pinout

BB-HRGB32M-TRBBB-HRGB32M-TRB-C
BB-HRGB32M-TRB 3528 package, top and side viewPin 1 is ringed. pin 1 VDD (power), pin 2 DOUT (data out), pin 3 VSS (ground), pin 4 DIN (data in).11 VDDpower22 DOUTdata out33 VSSground44 DINdata in3.5 mm overall2.8 mmtop view1.9 mmside view
  • Power
  • Data
  • Ground
  • Pin 1

Outline and pin positions checked against the manufacturer datasheet (C20866101 BB-HRGB32M-TRB Ver1.0 p1). Top view: 1 VDD top-left, 2 DOUT bottom-left, 3 VSS bottom-right, 4 DIN top-right, printed beside the pads; no pin-1 mark or cut corner is drawn. Body 3.2 x 2.8 mm with 0.9 x 0.7 mm leads out to 3.5 mm; lead spacing is approximate. What this means.

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

Protocol — ABOC BB single-wire IC (RGB order)

Timings shown from datasheet.

ABOC BB single-wire IC (RGB order) bit timingABOC BB single-wire IC (RGB order) bit timing: a zero bit is 300 nanoseconds high then 900 low; a one bit is 900 high then 300 low; reset 200 microseconds low1 · Bit encoding, to scaleDINhighlowbit 0 period 1200 nsbit 1 period 1200 nsT0H 300 nsT1H 900 nsT0L 900 nsT1L 300 ns"0" bit"1" bit020040060080010001200140016001800200022002400time, ns2 · One frame: 24 bits, most-significant bit firstDIN170110010007100110101700101100bitch 1 · 8 bitsch 2 · 8 bitsch 3 · 8 bitsChannel order not recorded for this protocol · frame = 24 × ~1200 ns ≈ 28.8 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 ≥ 200 µs (not to scale)4 · Cascade: each DOUT feeds the next DINMCULED 1DINDOUTLED 2DINDOUTLED NDINDOUTLED 1 keeps the first 24 bits, re-shapes the signal and sends the rest out on DOUT;LED 2 keeps the next 24, and so on. The last LED's DOUT is left unconnected.
T0H 300 / T0L 900 · T1H 900 / T1L 300 ns · period 1200 ns · reset 200 µs source: datasheet

Compatibility

  • protocol compatible SK6805

    Timing numbers only: T0H 300 / T0L 900 / T1H 900 / T1L 300 ns with windows 200-400 / 800- / 650-1000 / 200- and a 200 us reset are the numbers the sk6805 protocol records from the OPSCO EC-series sheets. The order differs (RGB here, GRB for SK6805), the drive is 12 mA (5 mA for SK6805) and the ABOC sheets never mention SK6805 or any other maker's IC. source ↗

  • protocol compatible of this Everlight 3-channel 8-bit PWM single-wire IC

    Same 300 / 900 / 900 / 300 ns split and the same R, G, B (not G, R, B) data order as the ABOC BB sheets; the tolerance (+/-80 ns here, 200-400 / 650-1000 ns windows there) and the reset (50 us here, 200 us there) differ. Neither maker names the other's IC.

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.

  • 2019-11 estimate PDF metadata CreationDate of the LCSC copy of the BB-HRGB32M-TRB sheet (the sheet prints a version number but no date) ↗ month
  • 2019-11 estimate PDF metadata CreationDate of the LCSC copy of the BB-HRGB32K-TRB sheet (the sheet prints a version number but no date) ↗ month

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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