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LED COOL WHITE CLEAR 3MM T/H 3UWC8.035N-F
Part Overview
The 3UWC8.035N-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 functionally equivalent substitute components for ongoing design support and procurement continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 3UWC8.035N-F |
| Manufacturer | Bivar Inc. |
| Product Status | Obsolete |
| Color | White, Cool |
| Lens Size | 3mm, T-1 |
| Lens Style | Round with Domed Top |
| Lens Transparency | Clear |
| Voltage - Forward (Vf) (Typ) | 3.4V |
| Current - Test | 20mA |
| Millicandela Rating | 8000mcd |
| Viewing Angle | 35° |
| Mounting Type | Through Hole |
| Wavelength - Dominant | 5000K |
| Package / Case | Radial |
| Height (Max) | 5.30mm |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the obsolete 3UWC8.035N-F is based on the following critical parameters that must align between the main part and substitute components:
Primary Substitution Criteria:
- Lens size: 3mm T-1 form factor
- Mounting type: Through hole radial configuration
- Lens style: Round with domed top
- Lens transparency: Clear colorless
- Color classification: White
- Voltage range: Forward voltage within acceptable operating tolerance (3.3V to 3.4V)
- Current rating: 20mA test current compatibility
- Package type: Radial
The substitute part 5218268F from Dialight meets these core electrical and mechanical parameters, enabling direct functional replacement in through-hole PCB applications requiring white LED indication with 3mm T-1 form factor specifications.
Parameter Comparison
| Parameter | 3UWC8.035N-F (Bivar Inc.) | 5218268F (Dialight) | Compatibility Notes |
|---|---|---|---|
| Lens Size | 3mm, T-1 | 3.00mm Dia | Equivalent form factor |
| Lens Style | Round with Domed Top | Round with Domed Top | Identical |
| Lens Transparency | Clear | Clear | Identical |
| Color | White, Cool | White | Compatible white spectrum |
| Voltage - Forward (Vf) (Typ) | 3.4V | 3.3V | 0.1V variance within tolerance |
| Current - Test | 20mA | 20mA | Identical |
| Millicandela Rating | 8000mcd | 9300mcd | Substitute offers higher brightness |
| Viewing Angle | 35° | 25° | Substitute has narrower viewing angle |
| Mounting Type | Through Hole | Through Hole | Identical |
| Package / Case | Radial | Radial | Identical |
| Height (Max) | 5.30mm | 6.56mm | Substitute 1.26mm taller; verify PCB clearance |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | Identical |
| Product Status | Obsolete | Active | Substitute actively manufactured |
Engineering Selection Recommendations
The 5218268F from Dialight is an active production substitute for the obsolete 3UWC8.035N-F. Selection of this substitute is supported by the following engineering factors:
Compliance and Availability:
- The substitute part maintains active product status, ensuring long-term procurement availability and supply chain continuity
- Both parts carry identical Moisture Sensitivity Level (MSL) classification of 1 (Unlimited)
- Both parts share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications
- The substitute part is RoHS3 compliant and REACH unaffected
Electrical Compatibility:
- Forward voltage differential of 0.1V (3.3V vs 3.4V) falls within standard LED operating tolerance
- Test current specification of 20mA is identical
- Both components function as discrete white LED indication devices
Mechanical Compatibility:
- Identical through-hole radial mounting configuration
- Equivalent 3mm T-1 lens form factor
- Height difference of 1.26mm requires verification of available PCB clearance in the target application
Performance Characteristics:
- The substitute provides increased brightness (9300mcd vs 8000mcd), which may enhance visibility in the application
- The substitute features a narrower viewing angle (25° vs 35°), which may affect light distribution characteristics depending on application requirements
Frequently Asked Questions (FAQ)
Q: Can the 5218268F directly replace the 3UWC8.035N-F without PCB modifications?
A: The 5218268F is mechanically and electrically compatible for through-hole mounting. However, the substitute is 1.26mm taller (6.56mm vs 5.30mm maximum height). Verify that available clearance above the PCB accommodates this height difference before installation.
Q: What is the significance of the viewing angle difference between these parts?
A: The main part features a 35° viewing angle, while the substitute has a 25° viewing angle. This narrower angle concentrates light output in a more focused beam. Applications requiring wide-angle light distribution should evaluate whether the reduced viewing angle affects the intended function.
Q: Why does the substitute have higher brightness (9300mcd vs 8000mcd)?
A: The 5218268F delivers approximately 16% higher luminous intensity. This increased brightness may improve visibility in applications where the original 8000mcd specification was marginal, but does not create incompatibility.
Q: Are there any compliance or certification differences between these parts?
A: Both parts carry identical environmental classifications (MSL 1, ECCN EAR99, HTSUS 8541.41.0000). The substitute additionally carries RoHS3 compliance and REACH unaffected status, providing enhanced regulatory alignment for modern applications.
Q: What is the forward voltage tolerance for these LED components?
A: The main part specifies 3.4V typical forward voltage, while the substitute specifies 3.3V typical. This 0.1V difference is within standard LED manufacturing tolerance and does not affect circuit compatibility in properly designed current-limiting applications.
Q: Is the substitute part actively manufactured?
A: Yes. The 5218268F is classified as active product status, ensuring ongoing availability from Dialight. The original 3UWC8.035N-F is obsolete and no longer manufactured by Bivar Inc.
Q: What packaging format is the substitute supplied in?
A: The 5218268F is supplied in bulk packaging, compared to the original part's standard packaging designation. Verify that bulk packaging meets procurement and handling requirements for your application.
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