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SLR-332MC3F Equivalent & Substitute Parts
Part Overview
The SLR-332MC3F is a green LED indicator from Rohm Semiconductor designed for through-hole applications. This T-1 package LED operates at 2.1V forward voltage with 16mcd brightness and a 572nm dominant wavelength. The part is marked as "Not For New Designs," making identification of functionally equivalent alternatives essential for ongoing production support and design flexibility.
Substiute Parts
Key Parameters
| Parameter | SLR-332MC3F |
|---|---|
| Manufacturer | Rohm Semiconductor |
| Color | Green |
| Wavelength - Dominant (nm) | 572 |
| Voltage - Forward (Vf) Typ (V) | 2.1 |
| Current - Test (mA) | 10 |
| Millicandela Rating (mcd) | 16 |
| Lens Size (mm) | 3.20 |
| Lens Style | Round with Domed Top |
| Viewing Angle (°) | 85 |
| Mounting Type | Through Hole |
| Package / Case | Radial |
| Height Max (mm) | 4.60 |
| RoHS Status | ROHS3 Compliant |
| Product Status | Not For New Designs |
Substitute Part Grouping Explanation
Substitution eligibility for the SLR-332MC3F is determined by the following critical parameters:
- Color & Wavelength: Green LEDs with dominant wavelengths between 569nm and 573nm maintain visual compatibility
- Forward Voltage (Vf): Operating range of 2.0V to 2.2V ensures circuit compatibility without redesign
- Mounting Type: Through-hole radial package required for PCB compatibility
- Lens Configuration: Round domed-top lens style with 3.0mm to 3.2mm diameter maintains mechanical fit
- Compliance: ROHS3 compliance and EAR99 classification required for regulatory alignment
Substitute parts are grouped into two categories based on brightness characteristics:
Category A - Direct Brightness Match (16-40mcd): Parts with similar or moderately higher brightness suitable for direct replacement in standard indicator applications.
Category B - High Brightness (180-240mcd): Parts with significantly elevated brightness for applications requiring enhanced visibility, requiring circuit validation.
Parameter Comparison
| Part Number | Manufacturer | Color | Wavelength (nm) | Vf Typ (V) | Test Current (mA) | Brightness (mcd) | Lens Size (mm) | Viewing Angle (°) | Height Max (mm) | Product Status | Packaging |
|---|---|---|---|---|---|---|---|---|---|---|---|
| SLR-332MC3F | Rohm Semiconductor | Green | 572 | 2.1 | 10 | 16 | 3.20 | 85 | 4.60 | Not For New Designs | Bulk |
| HLMP-1520 | Broadcom Limited | Green | 569 | 2.1 | 10 | 22 | 3.00 | 45 | 6.35 | Active | Bulk |
| HLMP-1521 | Broadcom Limited | Green | 569 | 2.1 | 10 | 22 | 3.00 | 45 | 6.35 | Active | Bulk |
| HLMP-1521-E0002 | Broadcom Limited | Green | 569 | 2.1 | 10 | 22 | 3.00 | 45 | 6.35 | Active | Tape & Reel |
| HLMP-Y502-F0000 | Broadcom Limited | Green | 573 | 2.2 | 20 | 40 | 3.00 | 55 | 5.20 | Active | Bulk |
| HLMP-Y802-F0000 | Broadcom Limited | Green | 572 | 2.1 | 20 | 240 | 3.00 | 45 | 5.20 | Active | Bulk |
| LTL-1KHGE | Lite-On Inc. | Green | 569 | 2.1 | 20 | 29 | 3.10 | 75 | 5.00 | Active | Bulk |
| LTL1CHJGTNN | Lite-On Inc. | Green | 572 | 2.05 | 20 | 180 | 3.00 | 45 | 5.20 | Active | Bulk |
| SSL-LX3044GT | Lumex Opto/Components Inc. | Green | 565 | 2.2 | 20 | 40 | 3.00 | 30 | 4.60 | Active | Bulk |
| SSL-LX3044SGT | Lumex Opto/Components Inc. | Green | 565 | 2.2 | 20 | 200 | 3.00 | 30 | 4.60 | Active | Bulk |
| 484-10SYGT/S530-E2 | Everlight Electronics Co Ltd | Yellow-Green | 573 | 2.0 | 20 | 12.5 | 3.00 | 80 | 4.10 | Active | Bulk |
Engineering Selection Recommendations
Primary Substitutes (Active Status, Direct Compatibility)
HLMP-1520 and HLMP-1521 from Broadcom Limited are the preferred alternatives. Both maintain identical forward voltage (2.1V) and test current (10mA) specifications. The 22mcd brightness represents a 37.5% increase over the SLR-332MC3F, suitable for standard indicator applications. Both parts are ROHS3 compliant and carry Active product status. HLMP-1521-E0002 provides the same electrical and optical characteristics in Tape & Reel packaging for automated assembly environments.
Secondary Substitutes (Active Status, Moderate Parameter Variance)
HLMP-Y502-F0000 and SSL-LX3044GT operate at 2.2V forward voltage with 40mcd brightness. These parts require circuit validation due to the 0.1V voltage increase and 2.5x brightness elevation. Both maintain ROHS3 compliance and Active status. SSL-LX3044GT matches the original 4.60mm height, while HLMP-Y502-F0000 is 5.20mm tall.
LTL-1KHGE from Lite-On Inc. operates at 2.1V with 29mcd brightness and 75° viewing angle, providing a moderate brightness increase with wider light distribution.
High-Brightness Alternatives (Active Status, Circuit Redesign Required)
HLMP-Y802-F0000, LTL1CHJGTNN, and SSL-LX3044SGT deliver 180-240mcd brightness levels. These parts require full circuit evaluation including current-limiting resistor recalculation and thermal management assessment. All three maintain ROHS3 compliance and Active product status.
Wavelength Consideration
484-10SYGT/S530-E2 from Everlight Electronics is a yellow-green LED (573nm) with lower brightness (12.5mcd). This part is suitable only for applications where color shift is acceptable and brightness reduction is tolerable.
Frequently Asked Questions (FAQ)
Q: Can HLMP-1521 directly replace SLR-332MC3F without circuit modification?
A: Yes. Both parts operate at 2.1V forward voltage with 10mA test current. The 22mcd brightness of HLMP-1521 versus 16mcd of SLR-332MC3F represents a moderate increase within typical indicator application tolerances. No resistor recalculation is required.
Q: What is the difference between HLMP-1521 and HLMP-1521-E0002?
A: Both parts are electrically and optically identical. HLMP-1521-E0002 is supplied in Tape & Reel packaging for automated pick-and-place assembly, while HLMP-1521 is supplied in Bulk packaging for manual assembly or tube reels.
Q: Why does SSL-LX3044GT have a narrower viewing angle (30°) compared to SLR-332MC3F (85°)?
A: Viewing angle is determined by lens design and internal LED geometry. The SSL-LX3044GT's 30° narrow angle concentrates light output for applications requiring directional indication, while the SLR-332MC3F's 85° wide angle distributes light across a broader field. Application requirements determine which is appropriate.
Q: Can HLMP-Y802-F0000 be used as a direct replacement?
A: HLMP-Y802-F0000 maintains identical forward voltage (2.1V) and wavelength (572nm) but delivers 240mcd brightness versus 16mcd of the original. This 15x brightness increase requires circuit validation. Current-limiting resistor values must be recalculated to prevent LED damage and ensure proper circuit operation.
Q: Are all substitute parts ROHS3 compliant?
A: Yes. All listed substitute parts carry ROHS3 compliance certification, matching the regulatory status of SLR-332MC3F.
Q: What does "Not For New Designs" mean for SLR-332MC3F?
A: This designation indicates Rohm Semiconductor has discontinued active development and marketing of this part. Existing inventory remains available, but new designs should incorporate one of the Active-status alternatives listed in this reference.
Q: How do I select between Broadcom, Lite-On, and Lumex alternatives?
A: Selection depends on specific application requirements. Broadcom HLMP series offers the closest electrical match with Active status and broad availability. Lite-On LTL series provides alternative sourcing with comparable specifications. Lumex SSL series offers compact form factors. Evaluate based on brightness requirements, viewing angle needs, and supply chain preferences.
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