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3.5 × 3.5 mm 6 pins top-emitting

TX1818H

3535 · smd · TX1818 · TCWIN

1-wire RGB 10.8–13.2 V backup data line active

At a glance

Colour
RGB8 bits per channel
Data
1-wiretimed pulses on one line
Supply
10.8–13.2 Vbackup data line
Size
3.5 × 3.5 × 1.4 mm6 pins · top
Max current
—per-channel not recorded
PWM
8 kHzreset 80 µs
Library support
FastLED WLED Adafruit

TX1818 in the six-pad 3.5 x 3.5 x 1.36 mm package, H-type pin allocation (no backup input). 12 V supply, 9 mA per channel, RGB order, version A2 dated 2023-03-27. Pins (p4-5): 1 GND, 2 NC, 3 DIN, 4 VDD, 5 NC, 6 DO. Two sheets, HLJ-F01 and HXJ-F01, print the same drawing and pin table. The sheet text calls the package “3838”.

Datasheets disagree with themselves: the reset row of the HLJ and HXJ sheets reads “80 us” in one column and “>0 us” in the next (the GLJ/BJJ/CXJ sheets read “>= 80 us”).

TX1818HWBJ-F01 and TX1818HWCJ-F01 have no datasheet on LCSC; listed by the shared IC code 1818 and package letter H (inference).

Variants

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

Order codeFaceLensWhite PinsSiliconStatusFirst seenDatasheet
TX1818HLJ-F01 — — — 6 — active 2023-03-27 A2
LCSC stock 105 when checked. LCSC stock 105 on 2026-10-15.
TX1818HXJ-F01 — — — 6 — active 2023-03-27 A2A2 ↗
LCSC stock 500 when checked. Same drawing and pin table as HLJ-F01. LCSC stock 500 on 2026-10-15.
TX1818HWBJ-F01 — — — 6 — active 2023-03-27 A2
No datasheet is listed on LCSC for this SKU. Package, pin order and drawing are taken from the sibling sheet TX1818HLJ-F01 and TX1818HXJ-F01 because both share IC code 1818 and package letter H; that is an inference from the part number, not something any sheet states. Drive current, timing window and the meaning of the remaining letters are not confirmed for this SKU. LCSC stock 975 on 2026-10-15.
TX1818HWCJ-F01 — — — 6 — active 2023-03-27 A2
No datasheet is listed on LCSC for this SKU. Package, pin order and drawing are taken from the sibling sheet TX1818HLJ-F01 and TX1818HXJ-F01 because both share IC code 1818 and package letter H; that is an inference from the part number, not something any sheet states. Drive current, timing window and the meaning of the remaining letters are not confirmed for this SKU. LCSC stock 0 on 2026-10-15.

Pinout

TX1818HLJ-F01TX1818HXJ-F01TX1818HWBJ-F01TX1818HWCJ-F01
TX1818H 3535 package, top and side viewPin 1 is ringed. pin 1 GND (ground), pin 2 NC (no connect), pin 3 DIN (data in), pin 4 VDD (power), pin 5 NC (no connect), pin 6 DO (data out).11 GNDground22 NCno connect33 DINdata in44 VDDpower55 NCno connect66 DOdata out3.5 mm3.5 mmtop view1.4 mmside view
  • Ground
  • No connect
  • Data
  • Power
  • Pin 1
  • Cut corner

Outline and pin positions checked against the manufacturer datasheet (C784557 TX1818HLJ-F01 rev A2 p4). Pads 0.75 mm wide, 2.0 mm between inner edges; the three pads span 2.2 mm vertically (0.58 / 0.52 mm outer pads). Row pitch estimated. What this means.

  1. 1 GND ground
  2. 2 NC nc
  3. 3 DIN data in
  4. 4 VDD power
  5. 5 NC nc
  6. 6 DO data out

Protocol — TX1818

Timings shown from datasheet.

TX1818 bit timingTX1818 bit timing: a zero bit is 300 nanoseconds high then 900 low; a one bit is 900 high then 300 low; tolerance plus or minus 50 nanoseconds; reset 80 microseconds low1 · Bit encoding, to scaleDINhighlowbit 0 period 1200 nsbit 1 period 1200 nsT0H 300 ±50 nsT1H 900 ±50 nsT0L 900 ±50 nsT1L 300 ±50 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.BIN (backup): tied to the previous pixel's DIN
T0H 300 / T0L 900 · T1H 900 / T1L 300 ns · ±50 ns · period 1200 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.

  • 2023-03-27 datasheet revision TCWIN TX1818HLJ-F01 specification cover: date 20230327, version A2 ↗ day
  • 2023-03-27 datasheet revision TCWIN TX1818 specification covers (CXJ / BJJ / GLJ / HLJ / HXJ): date 20230327, version A2 ↗ day
  • 2023-03-27 datasheet revision TCWIN TX1818HXJ-F01 specification cover: date 20230327, version A2 ↗ 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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