AstraBeamLED

OSRAM OSTAR® Stage Light PCB LE RTDUW S2WN

High Power 40W RGBCY LED PCB with direct heatsink copper base.

Production Details

The PCB went into production on April 9, 2025.

• Git Tag: production-2025.04.09

Received Product

Front

Back

Identified Issues

1. Reversed Labels:
   The labels for the pins were reversed (1,2,3,4 → 4,3,2,1 for both rows). This occurred because the OSRAM OSTAR LE RTDCY S2WN datasheet specifies pin numbers in the dimensional drawing as if viewed from the flipped side of the chip, rather than the standard convention used in most footprints.
   • This only affects the labeling. The functionality of the PCB remains intact. For example, RED- is actually BLUE+, etc.
   • The issue has been corrected.
2. Manufacturer Query:
   JLCPCB was unable to determine the dimensions of the direct heatsink and inquired whether to proceed without it.
   A response was sent via email, directing them to the file AstraBeamLED-Direct_Heatsink.gbr included in the zip, along with an image specifying the exact dimensions.

Additional Notes

• The edges of the direct heatsink are slightly rounder than expected, with a radius of approximately 1–2 mm.
• The board is notably heavy, which is advantageous for heat dissipation.
• Soldering was performed using 138°C solder paste and a hotplate, successfully attaching an LED without any issues.

Continuous Integration and Repository Status

Table of contents

• Table of contents
  • Render Top Angled
  • Render Top
  • Render Bottom
  • Interactive BOM
  • BOM
  • KiCad Revision Inspector (KiRI)
    • Dark
    • Light
  • Schematic
    • Dark
    • Monochromatic
    • Light
  • Assembly
    • Dark
    • Light
  • 3D Step
  • Downloads
    • JLCPCB
    • Eurocircuits
• Report
  • ERC
  • DRC
• Credits

Render Top Angled

Render Top

Render Bottom

Interactive BOM

Easily check component locations by hovering over a specific component.

IBOM HTML

BOM

All components with Values, References, Sheetpath and Links to the datasheet.

BOM HTML

KiCad Revision Inspector (KiRI)

KiCad Revision Inspector (KiRI) is a tool for comparing different versions of KiCad projects. It exports project revisions to SVG format for visual comparison using an onion skin view. This helps identify changes and errors in PCB designs. KiRI also includes a command line interface for generating viewable artifacts in any web browser.

View the PCB / Schematic in an interactive way, pan and zoom to see the details.

Dark

• KiRi Dark

Light

• KiRi Light

Schematic

Dark

• Schematic Dark PDF

Monochromatic

• Schematic Monochromatic PDF

Light

• Schematic Light PDF

Assembly

Dark

• PCB Dark PDF

Light

• PCB Light PDF

3D Step

• 3D Step

Downloads

JLCPCB

• JLCPCB Zip
• JLCPCB BOM CSV
• JLCPCB CPL CSV

Eurocircuits

• Eurocircuits Zip
• Eurocircuits BOM CSV
• Eurocircuits CPL CSV

Report

ERC

ERC Report

• Errors: 0
• Warnings: 0
• Link: HTML Report

DRC

DRC Report

• Errors: 0
• Warnings: 0
• Link: HTML Report

PCB

Board size: 75.0x55.0 mm (2.95x2.17 inches)

• This is the size of the rectangle that contains the board
• Thickness: 1.61 mm (63 mils)
• Material: FR4
• Finish: ENIG
• Layers: 2
• Copper thickness: 35 µm

Solder mask: TOP / BOTTOM

• Color: Top: #00000080 / Bottom: #0000002b

Silk screen: TOP / BOTTOM

• Color: White

Special features:

• Edge plating

Stackup:

Name	Type	Color	Thickness [µm]	Material	Er	Loss tan
F.SilkS	Top Silk Screen	White
F.Paste	Top Solder Paste
F.Mask	Top Solder Mask	#00000080	10
F.Cu	copper		35
dielectric 1	core	#8D5316ED	1516	FR4	4.4	0.020
B.Cu	copper		35
B.Mask	Bottom Solder Mask	#0000002B	10
B.Paste	Bottom Solder Paste
B.SilkS	Bottom Silk Screen	White

Important sizes

Clearance: 0.2 mm (8 mils)

Track width: 0.75 mm (30 mils)

• By design rules: 0.15 mm (6 mils)

Drill: N/A mm (N/A mils)

• Vias: N/A mm (N/A mils) [Design: 1.1 mm (43 mils)]
• Pads: N/A mm (N/A mils)
• The above values are real drill sizes, they add 0.1 mm (4 mils) to plated holes (PTH)

Via: N/A/N/A mm (N/A/N/A mils)

• By design rules: 0.3/1.0 mm (12/39 mils)
• Micro via: yes [0.2/0.1 mm (8/4 mils)]
• Buried/blind via: yes
• Total: 0 (thru: 0 buried/blind: 0 micro: 0)

Outer Annular Ring: N/A mm (N/A mils)

• By design rules: 0.1 mm (4 mils)

Eurocircuits class: 4A

• Using min drill N/A mm for an OAR of N/A mm

General stats

Components count: (SMD/THT)

• Top: 9/0 (SMD)
• Bottom: 0/0 (NONE)

Defined tracks:

• 0.35 mm (14 mils)
• 0.5 mm (20 mils)
• 0.75 mm (30 mils)
• 2.0 mm (79 mils)
• 4.0 mm (157 mils)

Used tracks:

• 0.75 mm (30 mils) (16) defined: yes
• 4.0 mm (157 mils) (24) defined: yes

Defined vias:

• 0.55/0.25 mm (22/10 mils)
• 0.7/0.3 mm (28/12 mils)
• 0.8/0.4 mm (31/16 mils)

Used vias:

Holes (excluding vias):

Oval holes:

Drill tools (including vias and computing adjusts and rounding):

Solder paste stats:

Using a paste with 87.75 % alloy, that has an specific gravity for the alloy of 7.4 g/cm³ and 1.0 g/cm³ for the flux. This paste has an specific gravity of 4.15 g/cm³.

The stencil thickness is 0.12 mm.

Side	Pads with paste	Area [mm²]	Paste [g]
Total	24	412.67	2.05

Note: this is just an approximation to the theoretical value. Margins of the solder mask and waste aren’t computed.

Credits

KiCad EDA

KiBot

Amulet - Inspiration for awesome schematic and PCB

Sorry if I am forgetting someone, I used lots of references and tips from all over the place.