by adom
2020 Addressable RGB LED · 800 Kbps single-line cascade · 16 mA per channel (V1.0 sheet), 12 mA from V1.2
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Verification log + ::adom-verified trust mark, Worldsemi product photo, Ordering variants (V6, V7, C, E), honest stock status
4 files changed
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README.md+23−1@@ -2,6 +2,14 @@ **Worldsemi WS2812B-2020**: 2020 Addressable RGB LED, 16 mA per channel, 800 Kbps single-line cascade. An Adom Basic Part: Adom keeps it on reels for its pick-and-place line, so boards built with it draw on Adom stock. +<!-- product-photo -->+++*Worldsemi WS2812B in the 2020 package, cropped from Worldsemi's [WS2812B family photo](https://www.world-semi.com/products-rgbic-led.html).*+<!-- /product-photo -->++::adom-verified{src="/adom/ws2812b-2020/render/verification.json"}+ ## Key specs | Spec | Datasheet |@@ -118,13 +126,27 @@ The default symbol is the plain standard symbol. `WS2812B-2020-outline.kicad_sym ::adom-symbol-variants{src="/adom/ws2812b-2020/render/page.json" mpn="WS2812B-2020"} +## Ordering variants++Worldsemi sells several parts in this exact 2020 package. They all use the same package drawing and the same PCB land pattern, so this page's footprint, symbol and pinout fit every one of them; they differ electrically and optically. This page was built from the original WS2812B-2020 sheet.++| Part | LED current | Brightness | Notes | Datasheet |+|---|---|---|---|---|+| WS2812B-2020 (original) | 12 mA | green 500-700 mcd | the sheet this page was built from (V1.3, 2019) | Worldsemi V1.3 |+| WS2812B-2020-V6 | 12 mA | green ~850 mcd typ | 3.3-5.3 V, 1 uA standby; direct successor to the original | [V6](https://www.world-semi.com/downloads/datasheets/en/ws2812b-2020-v6-1.0.pdf) |+| WS2812B-2020-V7 | 16 mA | green 1500-2600 mcd | about 2x V6; green shifted to 525-530 nm | [V7](https://www.world-semi.com/downloads/datasheets/en/ws2812b-2020-v7-1.0.pdf) |+| WS2812C-2020-V6 | 5 mA | green ~320 mcd typ | low power, dim | [C-V6](https://www.world-semi.com/downloads/datasheets/en/ws2812c-2020-v6-2.1.pdf) |+| WS2812E-2020 | 12 mA | green ~760 mcd typ | lower cost; data high needs 0.7 x VDD (a 3.3 V MCU cannot drive it directly), 65 C max, blue 449-454 nm | [E](https://www.world-semi.com/downloads/datasheets/en/ws2812e-2020-2.1.pdf) |++All current sheets ask for a 100 nF capacitor per LED and show the R, G and B dies in G-R-B order.+ ## Ordering | | | |---|---| | MPN | `WS2812B-2020` | | Manufacturer | Worldsemi |-| Adom stock | Adom Basic Part, stocked on reels for Adom's pick-and-place line; reel counts on [pnp-inventory](https://wiki.adom.inc/adom/pnp-inventory) |+| Adom stock | Listed as an Adom Basic Part, but no reel is on hand yet (0 in [pnp-inventory](https://wiki.adom.inc/adom/pnp-inventory), October 2026). When a reel arrives, its exact variant is recorded here and in the verification log. | | Other sources | [adom-parts-search](https://wiki.adom.inc/adom/adom-parts-search) compares Mouser, DigiKey and JLCPCB | ## Downloads
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verification.jsonadded+237@@ -0,0 +1,237 @@+{+ "schema": "adom/verification@1",+ "part": "WS2812B-2020",+ "variants": [+ {+ "mpn": "WS2812B-2020",+ "note": "original part; this page was built from its 2019 sheet (V1.3), 12 mA",+ "stocked": false+ },+ {+ "mpn": "WS2812B-2020-V6",+ "note": "12 mA, 3.3-5.3 V, ~2x the original's typical brightness",+ "stocked": false+ },+ {+ "mpn": "WS2812B-2020-V7",+ "note": "16 mA, about 2x V6 brightness",+ "stocked": false+ },+ {+ "mpn": "WS2812C-2020-V6",+ "note": "5 mA, low power, dim",+ "stocked": false+ },+ {+ "mpn": "WS2812E-2020",+ "note": "lower cost; data high 0.7 x VDD, 65 C max, deeper blue",+ "stocked": false+ }+ ],+ "entries": [+ {+ "date": "2026-10-04",+ "by": {+ "name": "John Lauer",+ "handle": "john"+ },+ "status": "verified",+ "title": "Footprint matches Worldsemi's PCB Solder Pad drawing, on every 2020 variant",+ "scope": [+ "footprint"+ ],+ "variants": [+ "*"+ ],+ "checks": [+ {+ "text": "Pads 0.7 x 0.7 mm, square corners, as the drawing shows (no corner radius in any sheet)",+ "result": "pass"+ },+ {+ "text": "0.40 mm between the pad rows and 1.13 mm between pad inner edges (1.10 mm pad pitch)",+ "result": "pass"+ },+ {+ "text": "Identical land pattern on the WS2812B-2020-V6, -V7, WS2812C-2020-V6 and WS2812E-2020 sheets (2026 revisions)",+ "result": "pass"+ },+ {+ "text": "Identical to KiCad's LED_WS2812B-2020_PLCC4_2.0x2.0mm footprint",+ "result": "pass"+ },+ {+ "text": "Terminals (0.78 mm, 1.00 mm pitch) are longer than the pads, so 0.09 mm of each sits off the copper; no sheet gives a reason",+ "result": "note"+ }+ ],+ "evidence": [+ {+ "label": "pad proof on Worldsemi's Back View",+ "href": "docs/img/ws2812-pad-proof.png"+ },+ {+ "label": "WS2812B-2020-V6 sheet",+ "href": "https://www.world-semi.com/downloads/datasheets/en/ws2812b-2020-v6-1.0.pdf"+ },+ {+ "label": "WS2812B-2020-V7 sheet",+ "href": "https://www.world-semi.com/downloads/datasheets/en/ws2812b-2020-v7-1.0.pdf"+ },+ {+ "label": "WS2812C-2020-V6 sheet",+ "href": "https://www.world-semi.com/downloads/datasheets/en/ws2812c-2020-v6-2.1.pdf"+ },+ {+ "label": "WS2812E-2020 sheet",+ "href": "https://www.world-semi.com/downloads/datasheets/en/ws2812e-2020-2.1.pdf"+ }+ ],+ "files": {+ "WS2812B-2020.kicad_mod": "02e5bcf6a9713bc4d2ad20734f5f86e5c1c4c45b259697ece929eefce8c57a92"+ }+ },+ {+ "date": "2026-10-04",+ "by": {+ "name": "John Lauer",+ "handle": "john"+ },+ "status": "verified",+ "title": "3D model built from Worldsemi's drawing and proven by overlay at scale",+ "scope": [+ "3d-model"+ ],+ "variants": [+ "WS2812B-2020"+ ],+ "checks": [+ {+ "text": "Printed dimensions as printed: 2.20 x 2.00 x 0.84 mm, 0.28 mm base, 1.45 mm moulding, 1.00 mm terminal pitch",+ "result": "pass"+ },+ {+ "text": "Undimensioned features measured off the drawing at 350 px/mm: bottom pads 0.535 x 0.78 mm, castellation r 0.20 mm, polarity stripe",+ "result": "pass"+ },+ {+ "text": "Top-side terminal shapes traced from the Top View; Back View and Top View overlay at the same scale",+ "result": "pass"+ },+ {+ "text": "Part number marked dark on the clear moulding's front wall (window kept clear)",+ "result": "pass"+ }+ ],+ "evidence": [+ {+ "label": "model vs datasheet overlay",+ "href": "docs/img/ws2812-model-vs-datasheet.jpg"+ },+ {+ "label": "builder",+ "href": "provenance/tools/build_ws2812b_2020_v2.py"+ }+ ],+ "files": {+ "WS2812B-2020.step": "beb8642327c54f0389ea24aad7cc5122b2420933118dba6dcbf6802a365f755c",+ "WS2812B-2020-uncoloured.step": "8613a36aa1ebee66b71f63bf33c5b15bc7ccb0432f4f802ceec41120dccd3321"+ }+ },+ {+ "date": "2026-10-04",+ "by": {+ "name": "John Lauer",+ "handle": "john"+ },+ "status": "verified",+ "title": "Hero: copper fill, outlines outside the copper, underside datasheet note",+ "scope": [+ "hero"+ ],+ "variants": [+ "*"+ ],+ "checks": [+ {+ "text": "Copper fill drawn from the footprint's own pads; dashed outlines sit just outside the copper",+ "result": "pass"+ },+ {+ "text": "Underside note marks the off-copper terminal strips and the 0.40 mm pad gap, upright in the viewer's Bottom view",+ "result": "pass"+ },+ {+ "text": "Hero passes adom-hero 1.4 checks",+ "result": "pass"+ }+ ],+ "evidence": [],+ "files": {+ "ws2812b-2020-hero.glb": "872e26c0acf1c0e291d0bf1eb4b3d19fb135cec5ce7ba36d2ccdf560a4a75445"+ }+ },+ {+ "date": "2026-10-04",+ "by": {+ "name": "John Lauer",+ "handle": "john"+ },+ "status": "open",+ "title": "Which variant Adom stocks as its Basic Part is not recorded",+ "scope": [+ "stock"+ ],+ "variants": [+ "*"+ ],+ "checks": [+ {+ "text": "pnp-inventory part 281 (WS2812B-2020, basic) shows 0 on hand, no supplier part number and no receiving scan",+ "result": "note"+ },+ {+ "text": "Read the reel label (or order record) and mark that variant stocked here",+ "result": "note"+ }+ ],+ "evidence": [],+ "files": {}+ },+ {+ "date": "2026-10-04",+ "by": {+ "name": "John Lauer",+ "handle": "john"+ },+ "status": "open",+ "title": "3D model differences for the current variants",+ "scope": [+ "3d-model"+ ],+ "variants": [+ "WS2812B-2020-V6",+ "WS2812B-2020-V7",+ "WS2812C-2020-V6",+ "WS2812E-2020"+ ],+ "checks": [+ {+ "text": "Current sheets show the dies in G-R-B order (the original was R-G-B)",+ "result": "note"+ },+ {+ "text": "Worldsemi's product photo shows corner lead-frame tabs and a milky moulding over the whole top",+ "result": "note"+ }+ ],+ "evidence": [+ {+ "label": "Worldsemi product photo",+ "href": "docs/img/worldsemi-ws2812b-2020-photo.jpg"+ }+ ],+ "files": {}+ }+ ]+}