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3.5 × 2.8 mm 4 pins top-emitting

TZ-3528S2RGB-5V-I4-R-MS

3528 · smd · TZ1815 · TUOZHAN

1-wire RGB 3.5–7.5 V active

Also sold as TZ-3528S2RGB-5V-I4-R-MS, 3528 Huancai

At a glance

Colour
RGB8 bits per channel
Data
1-wiretimed pulses on one line
Supply
3.5–7.5 Vno backup data line
Size
3.5 × 2.8 × 1.9 mm4 pins · top
Max current
—12 mA per channel
PWM
4 kHzreset 80 µs
Library support
FastLED WLED Adafruit

TUOZHAN’s 3.5 x 2.8 mm pixel, a TZ-1815 in a 3528 body. LCSC stock 57,570.

Datasheets disagree: (1) the pin table prints 1 VDD, 2 DOU, 3 DIN, 4 GND, while the pin diagram on the same page shows VDD top-left, DOU bottom-left, GND bottom-right (the cut corner), DIN top-right. The catalogue follows the diagram’s pad positions with counter-clockwise numbering, so its pins 3 and 4 are the reverse of the sheet table. If you wire by the sheet’s table you will swap DIN and GND. (2) The overview says the control circuit is integrated in a “SMD 5050” package, while the drawing is 3.5 x 2.8 mm. (3) The text calls the IC both TZ-1815 and T-1815.

Variants

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

Order codeFaceLensWhite PinsSiliconStatusFirst seenDatasheet
TZ-3528S2RGB-5V-I4-R-MS — — — 4 — active 2023-03-07 PDF
LCSC stock 57,570 on 2026-10-15.

Pinout

TZ-3528S2RGB-5V-I4-R-MS
TZ-3528S2RGB-5V-I4-R-MS 3528 package, top and side viewPin 1 is ringed. pin 1 VDD (power), pin 2 DOUT (data out), pin 3 GND (ground), pin 4 DIN (data in).11 VDDpower22 DOUTdata out33 GNDground44 DINdata in3.9 mm overall2.8 mmtop view1.9 mmside view
  • Power
  • Data
  • Ground
  • Pin 1
  • Cut corner

Outline and pin positions checked against the manufacturer datasheet (C26159669 TZ-3528S2RGB-5V-I4-R-MS spec p3 (structure drawing) and p4 (pin diagram, pin table)). Drawn counter-clockwise from the top-left, which puts GND at the cut corner (bottom-right) and DIN top-right; the sheet's table says 3 DIN, 4 GND (see notes). Pad sizes (1.0 x 0.7 mm, 1.9 mm apart, 0.8 mm vertical gap) are the drawing's top-view pad rectangles; the sheet does not say whether they are the device terminals or the recommended land pattern. Approximate. What this means.

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

Protocol — TZ1815

Timings shown from datasheet.

TZ1815 bit timingTZ1815 bit timing: a zero bit is 295 nanoseconds high then 595 low; a one bit is 595 high then 295 low; reset 80 microseconds low1 · Bit encoding, to scaleDINhighlowbit 0 period 890 nsbit 1 period 890 nsT0H 295 nsT1H 595 nsT0L 595 nsT1L 295 ns"0" bit"1" bit02004006008001000120014001600time, 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 × ~890 ns ≈ 21.4 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 295 / T0L 595 · T1H 595 / T1L 295 ns · period 890 ns · reset 80 µs source: datasheet

Compatibility

  • electrically similar TZ2812

    Same timing table, supply range, PWM figure and 12 mA default output as the TZ2812 sheet. The sheets give the IC three names: TZ1815 (3535 sheet, which also writes TZ-1815), TZ-1815 (3528 and 2020 sheets) and HC-1815 (0807 sheet, and the "2020 HC-1815" product name on the 2020 sheet). Whether these are one die or several is not stated. source ↗

  • electrically similar SK6812

    Inferred from the printed numbers only; no TUOZHAN sheet names SK6812. The OPSCO SK6812 2025 sheet's typical timing (T0H 320, T0L 800, T1H 700, T1L 200 ns) falls inside all four TZ1815 windows, and both send 24 bits GRB. TZ1815 resets after 80 us where the 2025 SK6812 sheet asks for more than 200 us. source ↗

  • electrically similar of this TZ2812

    The TZ-1815 / HC-1815 sheets from the same company print an identical timing table, supply range, 4 kHz PWM and 12 mA default output. The two names are the maker's; no sheet says one replaces the other.

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.

  • 2021-08-10 datasheet revision TUOZHAN TZ-0807Z1RGB-5V-I4-MS(5mA) specification, effective date on the cover (HC-1815 named in the text) ↗ day
  • 2023-03-07 datasheet revision TUOZHAN TZ-3528S2RGB-5V-I4-R-MS specification, effective date (生效日期) on the cover ↗ 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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