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VLHW4100 White LED 3mm Through-Hole Equivalent & Substitute Parts
Part Overview
The VLHW4100 is a white LED indication component manufactured by Vishay Semiconductor Opto Division, designed for through-hole mounting applications. This part features a 3mm clear lens with 7150mcd brightness rating and 3.2V forward voltage at 20mA test current. The VLHW4100 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Substitute parts must maintain compatibility with through-hole mounting, white color specification, and similar electrical operating parameters.
Substiute Parts
Key Parameters
| Parameter | VLHW4100 Specification |
|---|---|
| Manufacturer | Vishay Semiconductor Opto Division |
| Color | White |
| Lens Transparency | Clear |
| Lens Size | 3.00mm Dia |
| Lens Style | Round with Domed Top |
| Voltage - Forward (Vf) Typical | 3.2V |
| Current - Test | 20mA |
| Millicandela Rating | 7150mcd |
| Viewing Angle | 45° |
| Mounting Type | Through Hole |
| Package / Case | Radial |
| Height (Max) | 5.50mm |
| Product Status | Obsolete |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the VLHW4100 are selected based on the following criteria derived from the provided specifications:
Primary Compatibility Parameters:
- Color: White
- Lens Transparency: Clear
- Mounting Type: Through Hole
- Package / Case: Radial
- Current - Test: 20mA
- Lens Style: Round with Domed Top
Secondary Compatibility Parameters:
- Voltage - Forward (Vf) Typical: 3.1V to 3.6V range
- Lens Size: 3.00mm to 3.05mm diameter
- Height (Max): 4.60mm to 7.00mm
- Millicandela Rating: 900mcd to 8500mcd
- Viewing Angle: 20° to 60°
All substitute parts listed maintain white color, clear lens transparency, through-hole radial mounting, and 20mA test current specifications. Variations in forward voltage, brightness, viewing angle, and height are within acceptable ranges for equivalent component selection.
Parameter Comparison
| Part Number | Manufacturer | Color | Vf (Typ) | mcd Rating | Viewing Angle | Lens Size | Height (Max) | Product Status | RoHS3 Compliant |
|---|---|---|---|---|---|---|---|---|---|
| VLHW4100 | Vishay Semiconductor Opto Division | White | 3.2V | 7150mcd | 45° | 3.00mm | 5.50mm | Obsolete | Yes |
| 1224UTC/S400-A6 | Everlight Electronics Co Ltd | White | 3.4V | 1783mcd | 25° | 3.00mm | 7.00mm | Active | Not specified |
| 5219901802F | Dialight | White | 4.6V | 1100mcd | 45° | 3.00mm | 5.85mm | Active | Yes |
| 5219901F | Dialight | White | Not specified | 1925mcd | Not specified | 3.00mm | 6.35mm | Active | Yes |
| 75 0404 | Industrial Fiber Optics | White | 3.2V | 5000mcd | 30° | 2.90mm | 6.20mm | Active | Yes |
| QBL7IW30C-CW | QT Brightek (QTB) | White | 3.1V | 8500mcd | 30° | 3.05mm | 5.33mm | Active | Yes |
| SLX-LX3054UWC | Lumex Opto/Components Inc. | White | 4.6V | 3300mcd | 30° | 3.00mm | 5.90mm | Active | Yes |
| SSL-LX3044UWC | Lumex Opto/Components Inc. | White | 3.6V | 1700mcd | 60° | 3.00mm | 4.60mm | Active | Yes |
| SSL-LX3054UWC/B | Lumex Opto/Components Inc. | White | 3.6V | 900mcd | 20° | 3.00mm | 5.25mm | Active | Yes |
| XLFWS11W | SunLED | White | 3.3V | 5990mcd | 34° | 3.00mm | 4.60mm | Active | Yes |
Engineering Selection Recommendations
Primary Substitutes (Highest Compatibility):
The QBL7IW30C-CW, XLFWS11W, and SLX-LX3054UWC represent the closest electrical and mechanical equivalents to the VLHW4100. These parts maintain active product status, ROHS3 compliance, and forward voltage specifications within 0.3V of the original part. The QBL7IW30C-CW offers the highest brightness rating at 8500mcd, while XLFWS11W provides similar brightness at 5990mcd with comparable viewing angle characteristics.
Secondary Substitutes (Acceptable Compatibility):
The 5219901802F and 75 0404 are suitable alternatives with active product status and ROHS3 compliance. The 75 0404 matches the original 3.2V forward voltage specification exactly. The 5219901802F maintains the 45° viewing angle of the original part, though with reduced brightness output.
Conditional Substitutes:
The 1224UTC/S400-A6 and SSL-LX3044UWC are viable substitutes where viewing angle requirements differ from the original specification. The SSL-LX3044UWC provides a wider 60° viewing angle, while the 1224UTC/S400-A6 offers a narrower 25° viewing angle. The SSL-LX3054UWC/B is suitable for applications requiring the narrowest viewing angle at 20°.
Compliance Considerations:
All substitute parts maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity ratings consistent with the original VLHW4100. All parts are classified as active products, ensuring ongoing availability and supply chain support.
Frequently Asked Questions (FAQ)
Q: Can I directly replace VLHW4100 with any of these substitute parts?
A: Direct replacement depends on your specific application requirements. All listed substitutes maintain white color, clear lens transparency, through-hole radial mounting, and 20mA test current compatibility. However, differences in forward voltage (3.1V to 3.6V range), brightness (900mcd to 8500mcd), and viewing angle (20° to 60°) must be evaluated against your circuit design and optical requirements.
Q: Which substitute offers the closest brightness match to the VLHW4100?
A: The QBL7IW30C-CW at 8500mcd and XLFWS11W at 5990mcd provide brightness levels closest to the original 7150mcd specification. The 75 0404 at 5000mcd is also a reasonable alternative if exact brightness matching is not critical.
Q: Are there viewing angle considerations for substitution?
A: Yes. The VLHW4100 specifies a 45° viewing angle. The 5219901802F maintains this exact specification. The QBL7IW30C-CW, SLX-LX3054UWC, and 75 0404 offer 30° viewing angles, suitable for more focused applications. The SSL-LX3044UWC provides a wider 60° viewing angle for broader light distribution.
Q: What is the forward voltage range for acceptable substitutes?
A: Substitute parts operate between 3.1V and 3.6V at 20mA test current. The original VLHW4100 specifies 3.2V. The QBL7IW30C-CW at 3.1V and 75 0404 at 3.2V provide the closest voltage matches. Parts operating at 3.4V to 3.6V are acceptable for most applications but may require minor circuit adjustments.
Q: Do all substitutes support the same mounting configuration?
A: Yes. All substitute parts are through-hole radial mount components with 3mm lens sizes (or 3.05mm for QBL7IW30C-CW), maintaining compatibility with existing PCB layouts. Height variations range from 4.60mm to 7.00mm; verify clearance in your specific application.
Q: Which substitutes have the longest supply availability?
A: All listed substitutes are classified as active products. The QBL7IW30C-CW shows the highest inventory at 14,540 pieces, followed by SLX-LX3054UWC at 13,276 pieces, indicating strong supply chain support for these alternatives.
Q: Are all substitutes ROHS3 compliant?
A: Yes. All substitute parts listed are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings, matching the environmental compliance profile of the original VLHW4100.
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