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HLMP3301 Equivalent & Substitute Parts
Part Overview
The HLMP3301 is a red diffused T-1 3/4 (5mm) through-hole LED manufactured by onsemi, designed for red indication applications. It features a 2.2V forward voltage, 7mcd brightness rating, and 65° viewing angle. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. Substitute parts must maintain compatibility with the original mechanical form factor, electrical characteristics, and mounting requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Lens Size | 5mm, T-1 3/4 |
| Lens Color | Red |
| Lens Transparency | Diffused |
| Voltage - Forward (Vf) (Typ) | 2.2V |
| Current - Test | 10mA |
| Millicandela Rating | 7mcd |
| Viewing Angle | 65° |
| Mounting Type | Through Hole |
| Wavelength - Peak | 635nm |
| Package / Case | Radial |
| Height (Max) | 8.89mm |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the HLMP3301 are classified into two categories based on electrical and mechanical compatibility:
Direct Substitutes (Parametric Equivalents): Parts that maintain the same forward voltage (2.2V), current rating (10mA), brightness (7mcd), and viewing angle (65°) specifications. These parts are mechanically and electrically interchangeable with the original HLMP3301.
Compatible Substitutes (Functional Alternatives): Parts that share the same mechanical form factor (T-1 3/4, 5mm, through-hole radial package) and lens characteristics (red, diffused) but may differ in forward voltage, brightness rating, or viewing angle. These parts require circuit design verification to ensure proper operation within the application's voltage and current constraints.
The following parameters determine substitution eligibility:
- Lens size and form factor (T-1 3/4, 5mm)
- Mounting type (through-hole radial)
- Color and lens transparency (red, diffused)
- Forward voltage compatibility with circuit design
- Current rating compatibility
- Package dimensions (height and diameter)
Parameter Comparison
| Part Number | Manufacturer | Vf (Typ) | Current - Test | mcd Rating | Viewing Angle | Height (Max) | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|
| HLMP3301 | onsemi | 2.2V | 10mA | 7mcd | 65° | 8.89mm | Obsolete | Not specified |
| HLMP-3301 | Broadcom Limited | 1.9V | 10mA | 5.4mcd | 60° | 9.19mm | Active | ROHS3 Compliant |
| HLMP3301NL | Everlight Electronics Co Ltd | 2.2V | 10mA | 7mcd | 65° | 8.89mm | Active | ROHS3 Compliant |
| 4302H1-5V | Visual Communications Company - VCC | 5V | 10mA | 8mcd | 60° | 10.08mm | Active | ROHS3 Compliant |
| 4302H1-12V | Visual Communications Company - VCC | 12V | 13mA | 8mcd | 60° | 10.08mm | Active | ROHS3 Compliant |
| WP7113ID | Kingbright | 2V | 20mA | 40mcd | 30° | 8.60mm | Active | ROHS3 Compliant |
Engineering Selection Recommendations
Recommended Primary Substitute: HLMP3301NL (Everlight Electronics Co Ltd)
The HLMP3301NL is the optimal substitute for the obsolete HLMP3301. It provides parametric equivalence across all critical specifications: identical forward voltage (2.2V), current rating (10mA), brightness (7mcd), viewing angle (65°), and physical dimensions (8.89mm height). The part is currently in active production status with ROHS3 compliance certification, ensuring long-term availability and regulatory compliance.
Secondary Substitute: HLMP-3301 (Broadcom Limited)
The HLMP-3301 offers active product status and ROHS3 compliance. While it maintains the same current rating (10mA) and mechanical form factor, it operates at a lower forward voltage (1.9V) and reduced brightness (5.4mcd) with a narrower viewing angle (60°). This part is suitable for applications where lower brightness and reduced viewing angle are acceptable, and where the circuit can accommodate the lower forward voltage.
Alternative Substitutes for Specific Applications:
The 4302H1-5V and 4302H1-12V (VCC) are suitable only for applications designed for 5V or 12V operation respectively. These parts require circuit redesign and are not direct replacements for 2.2V applications.
The WP7113ID (Kingbright) operates at 2V forward voltage with significantly higher brightness (40mcd) and narrower viewing angle (30°). It requires higher current (20mA) and is suitable only for applications requiring increased brightness with directional output.
All substitute parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring compatibility with standard manufacturing and storage conditions.
Frequently Asked Questions (FAQ)
Q: Can HLMP3301NL be used as a direct replacement for HLMP3301?
A: Yes. The HLMP3301NL is a parametric equivalent with identical electrical specifications (2.2V, 10mA, 7mcd) and mechanical dimensions (8.89mm height, T-1 3/4 form factor). No circuit modifications are required.
Q: What is the difference between HLMP-3301 and HLMP3301?
A: These are different parts from different manufacturers. HLMP-3301 (Broadcom) operates at 1.9V with 5.4mcd brightness and 60° viewing angle. HLMP3301 (onsemi) operates at 2.2V with 7mcd brightness and 65° viewing angle. The HLMP-3301 is not a direct substitute due to lower brightness and narrower viewing angle.
Q: Can I use 4302H1-5V or 4302H1-12V in place of HLMP3301?
A: No, not without circuit redesign. These parts operate at 5V and 12V respectively, compared to the HLMP3301's 2.2V. They require different current-limiting resistor values and circuit topology. Use only if your application is designed for these higher voltages.
Q: What does "diffused" lens mean?
A: A diffused lens scatters light over a wider viewing angle (65° for HLMP3301) compared to clear lenses. This provides more uniform brightness across a broader field of view, suitable for general indication applications.
Q: Are all substitute parts ROHS3 compliant?
A: All active substitute parts listed (HLMP3301NL, HLMP-3301, 4302H1-5V, 4302H1-12V, WP7113ID) are ROHS3 compliant. The original HLMP3301 (onsemi, obsolete) does not specify RoHS status.
Q: What is the significance of the T-1 3/4 package designation?
A: T-1 3/4 refers to the lens diameter (5mm) and form factor. All listed parts use this standard through-hole radial package, ensuring mechanical compatibility with existing PCB designs and component holders.
Q: Can WP7113ID replace HLMP3301 in my application?
A: Only if your application requires higher brightness (40mcd vs 7mcd) and can tolerate a narrower viewing angle (30° vs 65°). The WP7113ID also requires higher current (20mA vs 10mA), necessitating circuit verification and potential resistor value changes.
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