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5.4 × 5.0 mm 4 pins top-emitting

BL-HRGB32K-3-TRB

5050 · smd · Inolux PI (single-trace IC) · Bright LED Electronics Corp.

1-wire RGB 3.5–5.5 V active

Also sold as BL-HRGB32K-3

At a glance

Colour
RGB8 bits per channel
Data
1-wiretimed pulses on one line
Supply
3.5–5.5 Vno backup data line
Size
5.4 × 5.0 × 1.6 mm4 pins · top
Max current
—per-channel not recorded
PWM
1.2 kHzreset 80 µs
Library support
FastLED WLED Adafruit

Uses the inolux-pi protocol: the electrical and timing tables of this sheet are the Inolux IN-PI556FCH tables value for value (VDS max 26 V, IDOH 49 mA, IDOL -50 mA, DIN thresholds 3.4 V / 1.6 V, PWM 1.2 kHz, IDD 1 mA, 800 kHz, 0.3 / 0.9 / 0.6 / 0.6 us +/-0.15 us, reset 80 us, ‘TH+TL=1.25us+/-600ns’). The data diagram is G7…G0 R7…R0 B7…B0 (GRB). Is it the same as ABOC’s BB-HRGB32K-TRB? The package drawing is the same, but the sheets are not the same device: the BB sheet (2019, Ver1.0) has a different timing table (T1H 0.9 us, T1L 0.3 us, reset 200 us), RGB order, 12 mA constant current and VDD 4.5-5.5 V; this BL sheet (2017) has the 0.6 / 0.6 us split, 80 us reset and a different electrical table. See the aboc-bb protocol. Datasheets disagree with themselves: the absolute maximum table gives ‘Supply voltage Vin +5~+24 V’ while the electrical table says VDD 4.5-5.5 V (typ 5.2 V); the page-3 data note says ‘Follow the order of RGB to send data’ under a G, R, B drawing; the T1L row reads ‘0 Code, low level time’; the lens line says ‘water clear’ with a 5.4x5.0x1.6 mm package (the BB sheet writes 5.0x5.4). LCSC stock 370 on 2026-10-15.

Variants

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

Order codeFaceLensWhite PinsSiliconStatusFirst seenDatasheet
BL-HRGB32K-3-TRB — clear — 4 — active 2017-03-22 Ver1.0
LCSC C7421388, stock 370.

Pinout

BL-HRGB32K-3-TRB
BL-HRGB32K-3-TRB 5050 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 in5.4 mm overall5.0 mmtop view1.6 mmside view
  • Power
  • Data
  • Ground
  • Pin 1
  • Cut corner

Outline and pin positions checked against the manufacturer datasheet (C7421388 BL-HRGB32K-3-TRB Ver1.0 p1). Same outline drawing as the ABOC BB-HRGB32K: 1 VDD top-left, 2 DOUT bottom-left, 3 VSS bottom-right (cut corner), 4 DIN top-right. What this means.

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

Protocol — Inolux PI (single-trace IC)

Timings shown from datasheet. Other sources disagree; see the protocol page.

Inolux PI (single-trace IC) bit timingInolux PI (single-trace IC) bit timing: a zero bit is 300 nanoseconds high then 900 low; a one bit is 600 high then 600 low; tolerance plus or minus 150 nanoseconds; reset 80 microseconds low1 · Bit encoding, to scaleDINhighlowbit 0 period 1200 nsbit 1 period 1200 nsT0H 300 ±150 nsT1H 600 ±150 nsT0L 900 ±150 nsT1L 600 ±150 ns"0" bit"1" bit020040060080010001200140016001800200022002400time, ns± tolerance on each falling edge2 · 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 ≥ 80 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 600 / T1L 600 ns · ±150 ns · period 1200 ns · reset 80 µs source: datasheet

Compatibility

  • protocol compatible SK6812

    The four typical values of the older sheets (T0H 300, T0L 900, T1H 600, T1L 600 ns, reset 80 us, GRB, 24 bit, MSB first) are the same numbers the sk6812 protocol records from the OPSCO SK6812 rev. 02 sheet, so the framing and timing are interchangeable on those sheets. None of the Inolux sheets mentions SK6812 or WS2812 by name. The newer windowed sheets move the typical T1H to 640-900 ns, and the PI55TA and PI3210 sheets ask for a reset of 200 us, so this is protocol-compatible, not a clone claim. source ↗

  • protocol compatible of this Inolux PI dual-signal (single-trace IC with BIN)

    Same single-trace code, timing windows and GRB frame as inolux-pi (PI33TC sheet, p5-6); the only difference the sheet documents is the second data input BIN that lets the chain 'continue transmission' past a dead pixel.

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.

  • 2015-12-21 datasheet revision Inolux IN-PI554FCH data sheet revision table: 'Initial release 1.0 12-21-2015' (also on the IN-PI556FCH sheet) ↗ day
  • 2017-03-22 datasheet revision Bright LED BL-HRGB32K-3-TRB approval sheet: 'DATE 2017/3/22, Initial Released 1.0' ↗ 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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