Review all available part information (MPN, packag...
Thought for 4 sec
I’ll inspect the part metadata, look for an official datasheet if missing, update the Datasheet property if needed, then compare symbol/footprint/pins against the source and summarize mismatches.
Worked for 2 mins 1 sec
The project already had a datasheet URL, and I found the official Würth direct PDF as a reference; I’m now comparing the symbol and 3-pad footprint to the datasheet land pattern.
Worked for 3 mins 54 sec
Created a project doc
Part Datasheet Review: 150353FS74500A
Date: 2026-07-07 Existing project Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/user-uploaded/4bc3...
Reviewed the part against the official Würth Elektronik datasheet and created the full report: Part Datasheet Review: 150353FS74500A.
Key result: MPN, A/K polarity, and footprint land-pattern dimensions match; main issues are incomplete pin metadata and a 3rd EP terminal that represents the center thermal/solder pad, while the datasheet defines only 2 electrical LED pins. The Datasheet URL was already set, so I did not overwrite it, but I flagged that it points to an uploaded PDF rather than the official Würth URL.
Fix metadata and review
Fix pin metadata
Use official datasheet
Run ERC DRC
Check BOM fields
Refine this doc
Ask about this doc
Part Datasheet Review: 150353FS74500A
Date: 2026-07-07
Sources
- Existing project Datasheet URL: 4bc3b8332623ec49e3fdef432cbeb7601308e0aee99c7fd3a0ad6485883a0c8d.pdf
- Official Würth Elektronik datasheet URL found by web search: https://www.we-online.com/components/products/datasheet/150353FS74500A.pdf
- Official datasheet identified as revision 001.000, dated 2025-08-01, status valid.
Existing Part Information in Flux
Table
| Field | Current value |
|---|---|
| Project / part name | 150353FS74500A |
| Published part UID | 91dea34d-965f-40ec-a9ba-129a87776c44 |
| Manufacturer Part Number | 150353FS74500A |
| Manufacturer Name | Würth |
| Description | Single Color LEDs WL-SMDC Horticulture Waterclear Far Red 730nm 390mW 2.1V |
| Mount | Surface Mount |
| Designator Prefix | LED |
| Datasheet URL | Existing uploaded datasheet PDF, not the direct official Würth URL |
| Schematic terminals | K, A, EP |
| Terminal pin numbers | K = 1, A = 2, EP = 3 |
| Terminal pin types | Unspecified |
| Nets | None |
| Footprint source | 150353FS74500A.kicad_mod asset |
| 3D model | 150353FS74500A.stp asset |
Datasheet Key Specs
Table
| Spec | Datasheet value |
|---|---|
| Manufacturer | Würth Elektronik eiSos GmbH & Co. KG |
| Order code / MPN | 150353FS74500A |
| Product family | WL-SMDC Horticulture SMT Mono-color Ceramic LED Waterclear |
| Package | 3535 ceramic SMT LED with dome lens |
| Body size | 3.5 ±0.2 mm × 3.5 ±0.2 mm |
| Height | 1.93 ±0.15 mm |
| Lens diameter | Ø2.6 ±0.1 mm |
| Emitting color | Far Red |
| Peak wavelength | 730 nm typ. at IF = 350 mA |
| Radiant flux | 350 mW min., 390 mW typ. at IF = 350 mA |
| Forward voltage | 2.1 V typ., 2.5 V max. at IF = 350 mA |
| Continuous forward current | 700 mA max. |
| Reverse voltage | 5 V max. |
| ESD HBM | 8000 V |
| Thermal resistance | RθJS = 4 K/W |
| Junction temperature | 125 °C max. |
| Viewing angle | 125° typ. |
| Operating temperature | -40 °C to +85 °C |
| MSL | 2a |
| Compliance | RoHS compliant, REACh conform/declared, halogen-free, IEC 62471 Exempt Group 0 |
Datasheet Pin / Land Pattern Reference
Table
| Datasheet item | Function | Notes |
|---|---|---|
| Pin 1 | Cathode, - | Polarity mark identifies cathode side |
| Pin 2 | Anode, + | Right-side electrical pad in recommended land pattern view |
| Center land pad | Thermal / solder-point land | Recommended land pattern shows a center pad, but the schematic pin table identifies only pins 1 and 2 |
Recommended land pattern:
Table
| Pad | Position/function | Size |
|---|---|---|
| 1 | Left outer cathode pad | 0.55 mm × 2.8 mm |
| 2 | Right outer anode pad | 0.55 mm × 2.8 mm |
| Center | Center thermal/solder pad | 1.0 mm × 2.8 mm |
| Overall land area | Width/height | 2.8 mm × 2.8 mm |
Cross-Check Results
Metadata
- MPN matches datasheet: 150353FS74500A.
- Description matches the official product type and key headline specs: Far Red, 730 nm, 390 mW typ., 2.1 V typ.
- Manufacturer is present as “Würth”; datasheet full legal name is “Würth Elektronik eiSos GmbH & Co. KG.” This is acceptable but could be made more precise.
- Datasheet URL is set, so the requested conditional update was not required. However, it currently points to an uploaded PDF rather than the direct official Würth URL.
Schematic Symbol / Terminals
- K terminal uses Pin Number 1, matching datasheet Pin 1 cathode.
- A terminal uses Pin Number 2, matching datasheet Pin 2 anode.
- EP terminal uses Pin Number 3, representing the center footprint pad. The datasheet land pattern shows a center pad, but the datasheet pin table does not define it as electrical Pin 3.
- All terminal Pin Type values are Unspecified; pin descriptions are not populated. For clarity, K should describe “Cathode (-)”, A should describe “Anode (+)”, and EP should describe “Center thermal/solder pad; datasheet land-pattern pad, not an LED electrical terminal.”
Footprint
- Footprint pad sizes match the datasheet recommended land pattern:
- Pad 1: 0.55 mm × 2.8 mm.
- Pad 2: 0.55 mm × 2.8 mm.
- Pad 3 / center: 1.0 mm × 2.8 mm.
- Pad placement matches the datasheet polarity convention:
- Pad 1 / K is on the left.
- Pad 2 / A is on the right.
- Center pad is centered.
- Fab/silkscreen nominal body outline is 3.5 mm × 3.5 mm, matching datasheet body size.
- Courtyard is 5.5 mm × 5.5 mm. This is larger than the land pattern and not a datasheet mismatch by itself.
Mismatches / Issues to Flag
- Pin count ambiguity: Flux project context reports 3 pads/terminals, while the datasheet pin table defines 2 electrical pins. The third footprint pad is a center thermal/solder pad in the land pattern, not a numbered LED electrical terminal in the datasheet.
- EP terminal needs clearer metadata: EP is currently Pin Number 3 with Pin Type Unspecified and no description. It should be documented as the center thermal/solder pad, not a second cathode/anode connection.
- A/K terminal metadata incomplete: Pin Type and Pin Description are missing/unspecified for both electrical pins.
- Datasheet URL source: Datasheet URL is already set, but it points to an uploaded copy. The official direct Würth URL is https://www.we-online.com/components/products/datasheet/150353FS74500A.pdf.
- Manufacturer precision: Existing “Würth” is recognizable, but the datasheet manufacturer is “Würth Elektronik eiSos GmbH & Co. KG.”
Recommended Cleanup
- Keep the 3-pad footprint because it matches the recommended land pattern.
- Keep K = pin 1 and A = pin 2.
- Either keep EP as a third exposed/thermal pad terminal with explicit description, or remove it from the electrical symbol if Flux does not need the center pad to be user-connectable.
- Update terminal metadata:
- K: Pin Number 1, Pin Description “Cathode (-), polarity-mark side”, Pin Type Passive.
- A: Pin Number 2, Pin Description “Anode (+)”, Pin Type Passive.
- EP: Pin Number 3, Pin Description “Center thermal/solder pad from land pattern; not a datasheet electrical LED terminal”, Pin Type Passive or Mechanical/Unspecified depending library convention.
- Consider changing the Datasheet URL to the official Würth direct URL for traceability.
Sources
Existing Part Information in Flux
Datasheet Key Specs
Datasheet Pin / Land Pattern Reference
Cross-Check Results
Metadata
Schematic Symbol / Terminals
Footprint
Mismatches / Issues to Flag
Recommended Cleanup
