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4.0 × 2.0 mm 4 pins top-emitting

FC-RGBC4020-A1

4020 · smd · Nationstar FC-RGBC4020 IC (unnamed) · Nationstar

1-wire RGB 4–5.5 V active

Also sold as FC-RGBC4020-A1, Nationstar 4020 RGBC

At a glance

Colour
RGB8 bits per channel
Data
1-wiretimed pulses on one line
Supply
4–5.5 Vno backup data line
Size
4.0 × 2.0 × 1.7 mm4 pins · top
Max current
—12 mA per channel
PWM
4 kHzreset 200 µs
Library support
FastLED WLED Adafruit

LCSC files this under plain RGB LEDs, but the sheet’s pin table (DI, VDD, DO, GND), its single-wire return-to-zero coding description, reset code and 24-bit GRB data structure make it an addressable part.

It is a 4.0 x 2.0 mm body with four pads in a row (like the 4020 side-view parts from OPSCO and TONYU) but the row lies on the underside of a top-emitting lens, with pads 1.2 mm long across the body, so the land pattern is not the same as theirs. The catalogue draws pin 1 at the left of the land pattern as the sheet’s numbered strip does; the sheet does not say from which side the strip is seen. Not verified on hardware. LCSC 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
FC-RGBC4020-A1 — — — 4 — active 2023-06-16 C0
LCSC stock 0 on 2026-10-15.

Pinout

FC-RGBC4020-A1
FC-RGBC4020-A1 4020 package, top and side viewPin 1 is ringed. pin 1 DI (data in), pin 2 VDD (power), pin 3 DO (data out), pin 4 GND (ground).11 DIdata in22 VDDpower33 DOdata out44 GNDground4.0 mm2.0 mmtop view1.7 mmside view
  • Data
  • Power
  • Ground
  • Pin 1

Outline and pin positions checked against the manufacturer datasheet (C7464733 FC-RGBC4020-A1 spec, p3 (outline, side views, pad numbering, recommended pads)). Pins 1 to 4 left to right in the sheet's land-pattern strip: 1 DI, 2 VDD, 3 DO, 4 GND. Pad sizes (0.5 wide, 1.2 long, 0.35 gap) are the recommended land pattern; the underside of the device is drawn the same way. No pin-1 mark is described. Approximate. What this means.

  1. 1 DI data in
  2. 2 VDD power
  3. 3 DO data out
  4. 4 GND ground

Protocol — Nationstar FC-RGBC4020 IC (unnamed)

Timings shown from datasheet.

Nationstar FC-RGBC4020 IC (unnamed) bit timingNationstar FC-RGBC4020 IC (unnamed) 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 200 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 ≥ 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 · ±50 ns · period 1200 ns · reset 200 µs source: datasheet

Compatibility

  • electrically similar Meihua MHP1515 IC (unnamed)

    Same typical timing (300 / 900 / 900 / 300 ns +/-50 ns) and reset above 200 us as the Meihua MHP1515 sheet; Nationstar sends GRB where Meihua says RGB. Neither sheet names an IC or says one is derived from the other. source ↗

  • electrically similar SK6805

    Inferred from the numbers only; the Nationstar sheet never names OPSCO. Its typical timing (300 / 900 / 900 / 300 ns) and 200 us reset equal the typical figures printed for SK6805-EC15; the tolerance is +/-50 ns where OPSCO prints a wider window, supply is 4-5.5 V, and the output is 12 mA (SK6805: 5 mA). source ↗

  • electrically similar of this Nationstar FC-RGBC3228 IC (unnamed)

    Same timing table, reset and GRB order in the two Nationstar sheets of the same date; the 3228 sheet's IC table differs (11.5 mA output against 12 mA, 4.5 kHz PWM against 4 kHz, 3.5-5.5 V supply against 4-5.5 V, 80 ns delay against 200 ns maximum). Kept separate because the electrical tables differ.

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.

  • 2023-06-16 datasheet revision Nationstar FC-RGBC4020-A1 specification, release date (发放日期) on the cover; version C0 ↗ 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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