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LED COOL WHITE CLEAR 3MM T/H 3UWC8.035C-F
Part Overview
The 3UWC8.035C-F is a cool white LED indication component manufactured by Bivar Inc., designed for through-hole mounting applications. This discrete 3.4V radial LED features a 3mm T-1 form factor with clear colorless lens and 8000mcd brightness rating. The product is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure supply chain availability for new production and maintenance applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 3UWC8.035C-F |
| Manufacturer | Bivar Inc. |
| Product Status | Obsolete |
| Color | White, Cool |
| Lens Size | 3mm, T-1 |
| Lens Transparency | Clear |
| Voltage - Forward (Vf) Typical | 3.4V |
| Current - Test | 20mA |
| Millicandela Rating | 8000mcd |
| Viewing Angle | 35° |
| Mounting Type | Through Hole |
| Wavelength - Dominant | 6500K |
| Lens Style | Round with Domed Top |
| Package / Case | Radial |
| Height (Max) | 5.30mm |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| ECCN | EAR99 |
| HTSUS | 8541.41.0000 |
Substitute Part Grouping Explanation
Substitution of the obsolete 3UWC8.035C-F is determined by the following critical parameters:
Mechanical Compatibility:
- Lens size: 3mm T-1 form factor
- Mounting type: Through hole radial configuration
- Lens style: Round with domed top
- Lens transparency: Clear colorless
Electrical Compatibility:
- Forward voltage (Vf): 3.3V to 3.4V range
- Test current: 20mA standard
- Color: White LED indication
- Wavelength dominant: Cool white spectrum (6500K or equivalent)
Operational Parameters:
- Millicandela rating: Minimum 8000mcd (brightness level)
- Viewing angle: 25° to 35° acceptable range
- Moisture sensitivity: MSL 1 (Unlimited)
The substitute part 5218268F from Dialight meets these criteria with compatible electrical characteristics, identical mounting configuration, and active product status ensuring continued availability.
Parameter Comparison
| Parameter | 3UWC8.035C-F (Bivar) | 5218268F (Dialight) | Compatibility |
|---|---|---|---|
| Color | White, Cool | White | Compatible |
| Lens Size | 3mm, T-1 | 3.00mm Dia | Compatible |
| Lens Transparency | Clear | Clear | Compatible |
| Lens Style | Round with Domed Top | Round with Domed Top | Compatible |
| Voltage - Forward (Vf) Typical | 3.4V | 3.3V | Compatible (0.1V variance) |
| Current - Test | 20mA | 20mA | Compatible |
| Millicandela Rating | 8000mcd | 9300mcd | Compatible (higher brightness) |
| Viewing Angle | 35° | 25° | Compatible (narrower angle) |
| Mounting Type | Through Hole | Through Hole | Compatible |
| Package / Case | Radial | Radial | Compatible |
| Height (Max) | 5.30mm | 6.56mm | Compatible (1.26mm additional height) |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | Compatible |
| ECCN | EAR99 | EAR99 | Compatible |
| HTSUS | 8541.41.0000 | 8541.41.0000 | Compatible |
Engineering Selection Recommendations
The 5218268F from Dialight is a direct functional substitute for the obsolete 3UWC8.035C-F. Selection is supported by the following factors:
Product Status: The 5218268F maintains active product status, ensuring long-term supply chain availability and manufacturing continuity. The original component is classified as obsolete, making substitution necessary for ongoing production requirements.
Compliance and Certifications: Both components share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications. The 5218268F carries RoHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.
Electrical Compatibility: Forward voltage differential of 0.1V (3.3V vs 3.4V) falls within acceptable tolerance for LED indication circuits. Test current remains constant at 20mA, ensuring circuit design compatibility without modification.
Mechanical Fit: Both components utilize identical 3mm T-1 through-hole radial configuration with round domed lens. The 5218268F height of 6.56mm versus 5.30mm represents a 1.26mm increase, which must be verified against PCB layout constraints and enclosure clearances in specific applications.
Optical Performance: The 5218268F provides 9300mcd brightness compared to 8000mcd, representing a 16% increase in luminous intensity. The viewing angle narrows from 35° to 25°, which may affect visibility in applications requiring wide-angle indication but improves focused beam intensity.
Frequently Asked Questions (FAQ)
Q: Can the 5218268F directly replace the 3UWC8.035C-F without circuit modification?
A: Yes, for standard LED indication circuits. The 0.1V forward voltage difference (3.3V vs 3.4V) is within typical circuit tolerance. Current-limiting resistor values may require minor adjustment if precise brightness matching is required, but the component functions in existing 20mA test current designs.
Q: What is the impact of the 1.26mm height difference?
A: The 5218268F is 1.26mm taller (6.56mm vs 5.30mm). This must be evaluated against PCB layout, enclosure height constraints, and any mechanical clearance requirements. Verify physical fit in the specific application before implementation.
Q: Does the narrower 25° viewing angle affect functionality?
A: The 5218268F viewing angle of 25° is narrower than the original 35°. This concentrates the light beam, increasing intensity in the forward direction but reducing peripheral visibility. Applications requiring wide-angle indication should evaluate this parameter against specific visibility requirements.
Q: Are there compliance differences between the two components?
A: Both components share EAR99 and HTSUS classifications. The 5218268F includes RoHS3 compliance and REACH unaffected status, meeting current regulatory standards. The original component status is not specified for these certifications.
Q: What is the brightness difference between these components?
A: The 5218268F provides 9300mcd compared to 8000mcd, a 16% increase in luminous intensity. This higher brightness may require circuit adjustment if the original design relied on specific brightness levels for visual indication purposes.
Q: Is the 5218268F available in the same packaging format?
A: Both components use radial through-hole packaging in 3mm T-1 form factor. The 5218268F is supplied in bulk packaging, whereas original packaging format for the 3UWC8.035C-F is not specified. Verify packaging requirements for your procurement process.
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