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HLMP1790MP4B LED Circuit Board Indicator - Equivalent & Substitute Parts
Part Overview
The HLMP1790MP4B is a 3mm green diffused LED circuit board indicator manufactured by onsemi, designed for through-hole, right-angle mounting applications. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.
The HLMP1790MP4B operates at 1.9V with a 2mA rated current, delivering 2.3mcd brightness with a 50° viewing angle. Its diffused, tinted lens and round domed top design provide standard circuit board indication functionality across industrial and commercial applications.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | HLMP1790MP4B |
| Manufacturer | onsemi |
| Product Status | Obsolete |
| Color | Green |
| Wavelength - Peak | 565nm |
| Configuration | Single |
| Voltage Rating | 1.9V |
| Current | 2mA |
| Millicandela Rating | 2.3mcd |
| Viewing Angle | 50° |
| Lens Type | Diffused, Tinted |
| Lens Style | Round with Domed Top |
| Lens Size | 3mm, T-1 |
| Mounting Type | Through Hole, Right Angle |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
| REACH Status | REACH Unaffected |
| ECCN | EAR99 |
Substitute Part Grouping Explanation
Substitution eligibility for the HLMP1790MP4B is determined by the following critical parameters:
Primary Matching Criteria:
- Color: Green
- Lens Size: 3mm, T-1
- Lens Type: Diffused, Tinted
- Lens Style: Round with Domed Top
- Mounting Type: Through Hole, Right Angle
- Wavelength - Peak: 565nm (±5nm tolerance acceptable)
Secondary Compatibility Parameters:
- Voltage Rating: 1.9V (±0.2V acceptable for circuit board indicator applications)
- Current: 2mA (±1mA acceptable)
- Millicandela Rating: 2.3mcd (±1mcd acceptable for indication purposes)
- Viewing Angle: 50° (±15° acceptable depending on application)
Regulatory & Environmental:
- Moisture Sensitivity Level: 1 (Unlimited)
- REACH Status: REACH Unaffected
- RoHS Compliance: ROHS3 Compliant (preferred for new designs)
Substitute parts are classified as either Direct (functionally identical across all critical parameters) or Similar (functionally equivalent with minor parameter variations acceptable for circuit board indication applications).
Parameter Comparison
| Parameter | HLMP1790MP4B (Main) | HLMP-1790-A00A1 (Direct) | HLMP-1790-A00A2 (Direct) | 3GDL-F (Similar) | HLMP-1503-D00FG (Similar) | HLMP-1640-B00A1 (Similar) | HLMP-1641 (Similar) |
|---|---|---|---|---|---|---|---|
| Manufacturer | onsemi | Broadcom Limited | Broadcom Limited | Bivar Inc. | Broadcom Limited | Broadcom Limited | Broadcom Limited |
| Product Status | Obsolete | Active | Active | Active | Active | Active | Active |
| Color | Green | Green | Green | Green | Green | Green | Green |
| Wavelength - Peak | 565nm | 565nm | 565nm | 568nm | 565nm | 565nm | 565nm |
| Voltage Rating | 1.9V | 1.9V | 1.9V | 2.1V | 2.1V | 5V | 12V |
| Current | 2mA | 2mA | 2mA | 2mA | 10mA | 10mA | 13mA |
| Millicandela Rating | 2.3mcd | 2.3mcd | 2.3mcd | 4mcd | 4.2mcd | 1.6mcd | 1.6mcd |
| Viewing Angle | 50° | Not specified | Not specified | 35° | 60° | 120° | 60° |
| Lens Type | Diffused, Tinted | Diffused, Tinted | Diffused, Tinted | Diffused | Diffused | Diffused, Tinted | Diffused |
| Lens Style | Round with Domed Top | Round with Domed Top | Round with Domed Top | Round with Domed Top | Round with Domed Top | Round with Domed Top | Round with Domed Top |
| Lens Size | 3mm, T-1 | 3mm, T-1 | 3mm, T-1 | 3mm, T-1 | 3mm, T-1 | 3mm, T-1 | 3mm, T-1 |
| Mounting Type | Through Hole, Right Angle | Through Hole, Right Angle | Through Hole, Right Angle | Through Hole | Through Hole | Through Hole, Right Angle | Through Hole |
| RoHS Status | Not specified | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| MSL | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected | REACH Unaffected | Not specified | REACH Unaffected | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
Direct Substitutes (Recommended Primary Options):
HLMP-1790-A00A1 and HLMP-1790-A00A2 manufactured by Broadcom Limited are direct functional equivalents to the HLMP1790MP4B. Both parts maintain identical electrical specifications (1.9V, 2mA, 2.3mcd), optical characteristics (565nm peak wavelength, diffused tinted lens), and mechanical form factor (3mm T-1 through-hole right-angle mounting). Both are active products with ROHS3 compliance and REACH unaffected status, providing long-term availability and regulatory alignment for new designs.
Similar Substitutes (Application-Dependent Selection):
3GDL-F (Bivar Inc.) provides functional equivalence with a 2.1V forward voltage and 2mA test current, maintaining the same 565nm wavelength family and 3mm T-1 form factor. The 35° viewing angle is narrower than the original 50°, suitable for applications requiring more focused indication.
HLMP-1503-D00FG (Broadcom Limited) operates at 2.1V with 10mA test current and delivers 4.2mcd brightness with a 60° viewing angle. This part is suitable for applications where increased brightness or wider viewing angle is acceptable within the circuit board indicator category.
HLMP-1640-B00A1 and HLMP-1640-B00A2 (Broadcom Limited) operate at 5V with 10mA current and deliver 1.6mcd brightness. These parts are suitable for 5V circuit board indicator applications where the original 1.9V specification is not a design constraint.
HLMP-1641 (Broadcom Limited) operates at 12V with 13mA current and delivers 1.6mcd brightness. This part is suitable for 12V circuit board indicator applications.
All substitute options maintain ROHS3 compliance, MSL 1 (unlimited) moisture sensitivity rating, and REACH unaffected status, ensuring regulatory compliance and environmental stability across industrial and commercial applications.
Frequently Asked Questions (FAQ)
Q: Can HLMP-1790-A00A1 or HLMP-1790-A00A2 be used as direct replacements for HLMP1790MP4B?
A: Yes. Both Broadcom Limited parts are direct functional equivalents with identical voltage (1.9V), current (2mA), brightness (2.3mcd), wavelength (565nm), and mechanical specifications. Both are active products with ROHS3 compliance, providing superior long-term availability compared to the obsolete onsemi part.
Q: What is the difference between direct and similar substitutes?
A: Direct substitutes maintain all critical electrical and optical parameters within the original specification. Similar substitutes vary in one or more parameters (voltage, current, brightness, or viewing angle) but remain functionally equivalent for circuit board indication applications. Selection depends on circuit design constraints and application requirements.
Q: Can 3GDL-F replace HLMP1790MP4B in all applications?
A: 3GDL-F is functionally equivalent for most circuit board indicator applications. The 2.1V forward voltage requires circuit design verification if the original 1.9V specification was critical. The 35° viewing angle is narrower than the original 50°, suitable for focused indication but not for wide-angle visibility requirements.
Q: What are the voltage considerations when selecting a substitute?
A: The HLMP1790MP4B operates at 1.9V. Direct substitutes (HLMP-1790-A00A1, HLMP-1790-A00A2) maintain this specification. Similar substitutes operate at 2.1V (3GDL-F, HLMP-1503-D00FG), 5V (HLMP-1640-B00A1, HLMP-1640-B00A2), or 12V (HLMP-1641). Voltage selection must align with circuit design and power supply specifications.
Q: Are all substitute parts RoHS compliant?
A: Yes. All listed substitute parts are ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components in industrial and commercial applications.
Q: What is the viewing angle significance in LED indicator selection?
A: Viewing angle determines the cone of visibility for the LED indication. The original HLMP1790MP4B specifies 50°. Narrower angles (35° for 3GDL-F) provide focused indication; wider angles (60° for HLMP-1503-D00FG, 120° for HLMP-1640-B00A1) provide broader visibility. Application requirements determine acceptable viewing angle ranges.
Q: Can brightness (millicandela rating) differences affect circuit board indicator performance?
A: The HLMP1790MP4B delivers 2.3mcd. Similar substitutes range from 1.6mcd to 4.2mcd. For circuit board indication applications, these variations are functionally acceptable. Higher brightness (4mcd, 4.2mcd) improves visibility in bright environments; lower brightness (1.6mcd) reduces power consumption. Application lighting conditions determine acceptable brightness ranges.
Q: What mounting considerations apply to substitute selection?
A: The HLMP1790MP4B uses through-hole right-angle mounting. Direct substitutes maintain this specification. Some similar substitutes (3GDL-F, HLMP-1503-D00FG, HLMP-1641) use standard through-hole radial mounting. PCB layout and mechanical clearance requirements must be verified before substitution.
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