HLMP4700L Red LED T-1 3/4 Through Hole Equivalent & Substitute Parts

Part Overview

The HLMP4700L is a red diffused LED manufactured by Everlight Electronics Co Ltd, designed for indication applications in through-hole mounting configurations. This T-1 3/4 (5mm) lens package delivers 2mcd at 1.8V forward voltage with a 35° viewing angle. The part is currently active in production with 866 units in stock.

Equivalent and substitute parts become necessary when the primary part faces supply constraints, obsolescence, or when design flexibility permits selection from alternative manufacturers offering compatible electrical and mechanical characteristics within the same application category.

Substiute Parts

HLMP4700L

Everlight Electronics Co LtdIn Stock: 906HLMP4700L Datasheet

Current PartRFQ

HLMP4700

onsemiIn Stock: 1238HLMP4700 Datasheet

Parametric EquivalentRFQ

5219464F

DialightIn Stock: 34635219464F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HLMP4700L are classified into two categories based on electrical and mechanical compatibility:

Parametric Equivalent Classification: The HLMP4700 (onsemi) qualifies as a parametric equivalent because it maintains identical electrical specifications: 1.8V forward voltage, 2mA test current, 2mcd brightness, 35° viewing angle, and 635nm peak wavelength. Both parts feature diffused red lenses in T-1 3/4 through-hole radial packages. The primary distinction is manufacturer origin and product status (onsemi part is obsolete). Height variation (6.30mm vs 8.89mm) represents a minor mechanical difference within acceptable tolerance for most indication circuit applications.

Similar Manufacturer Part Classification: The 5219464F (Dialight) is classified as a similar manufacturer part with notable parameter deviations. While maintaining red color, through-hole mounting, and 635nm wavelength, this part differs in lens transparency (clear vs diffused), forward voltage (2.2V vs 1.8V), test current (20mA vs 2mA), brightness (125mcd vs 2mcd), and viewing angle (24° vs 35°). These differences restrict substitution to applications where higher brightness and different optical characteristics are acceptable.

Key Parameters Determining Substitution Eligibility:

• Color (Red)
• Mounting Type (Through Hole)
• Wavelength - Peak (635nm)
• Package Type (Radial, T-1 3/4)
• Lens Transparency (Diffused preferred for parametric equivalents)
• Voltage - Forward (1.8V preferred for direct substitution)
• Current - Test (2mA preferred for direct substitution)

Parameter Comparison

Engineering Selection Recommendations

HLMP4700 (onsemi) - Parametric Equivalent: This part is electrically and optically identical to the HLMP4700L and represents the primary equivalent choice. However, the onsemi HLMP4700 carries an obsolete product status, indicating discontinued manufacturing. Selection of this part requires confirmation of available inventory and acceptance of long-term supply risk. The 2.3mm height reduction (6.30mm vs 8.89mm) may require PCB layout verification in space-constrained applications but does not affect electrical performance. RoHS compliance status is not specified for the onsemi part; verification against project requirements is necessary.

5219464F (Dialight) - Similar Manufacturer Part: This part is suitable only for applications where the electrical and optical parameter differences are acceptable. The 10× brightness increase (125mcd vs 2mcd), higher forward voltage (2.2V vs 1.8V), and 10× test current increase (20mA vs 2mA) require circuit redesign including resistor and power supply adjustments. The narrower viewing angle (24° vs 35°) and clear lens (vs diffused) alter the optical presentation. The Dialight 5219464F is active in production with substantial inventory (3435 units) and confirmed ROHS3 compliance. This part is appropriate only when application requirements explicitly permit or require higher brightness and different optical characteristics.

Recommendation Summary: For direct substitution maintaining identical electrical and optical performance, the HLMP4700 (onsemi) is the appropriate choice, contingent upon inventory availability and obsolescence risk acceptance. For applications requiring active production status and higher brightness capability, the 5219464F (Dialight) requires circuit modification and is not a drop-in replacement.

Frequently Asked Questions (FAQ)

Q: Can the HLMP4700 (onsemi) be used as a direct replacement for the HLMP4700L (Everlight)?

A: Yes, the HLMP4700 (onsemi) is a parametric equivalent with identical electrical specifications (1.8V, 2mA, 2mcd, 35° viewing angle) and optical characteristics (diffused red lens, 635nm wavelength). The primary consideration is product status: the onsemi part is obsolete. Height difference (6.30mm vs 8.89mm) is acceptable for most indication applications but requires PCB layout verification in space-constrained designs.

Q: Is the 5219464F (Dialight) a drop-in replacement?

A: No. The 5219464F is not a drop-in replacement. While both are red LEDs in through-hole packages, the Dialight part has significantly different electrical parameters (2.2V vs 1.8V forward voltage, 20mA vs 2mA test current) and optical characteristics (125mcd vs 2mcd brightness, clear vs diffused lens, 24° vs 35° viewing angle). Circuit modification is required for use of this part.

Q: What are the critical parameters for substitution?

A: For parametric equivalence, the following parameters must match or be compatible: color (red), mounting type (through hole), wavelength (635nm), lens transparency (diffused for low-brightness indication), forward voltage (1.8V), test current (2mA), and package type (radial T-1 3/4). Deviations in any of these parameters require application-specific evaluation.

Q: Does the height difference between HLMP4700L (8.89mm) and HLMP4700 (6.30mm) affect compatibility?

A: Height difference does not affect electrical performance or circuit function. Compatibility depends on PCB layout and mechanical clearance requirements. Verify available space above the component on the PCB and confirm that the shorter height does not create mechanical interference issues in the final assembly.

Q: What is the significance of product status (Active vs Obsolete)?

A: Product status indicates manufacturing availability. Active parts are in current production with ongoing supply. Obsolete parts are no longer manufactured; availability is limited to existing inventory. Selection of obsolete parts (HLMP4700 onsemi) requires long-term supply planning and inventory confirmation before design commitment.

Q: Are all three parts RoHS3 compliant?

A: The HLMP4700L (Everlight) and 5219464F (Dialight) are confirmed ROHS3 compliant. The HLMP4700 (onsemi) does not specify RoHS status in the provided data. Verification of compliance status is required before use in applications with RoHS requirements.

Q: Can the 5219464F be used in a low-power indication circuit designed for 2mcd brightness?

A: No. The 5219464F produces 125mcd brightness at 20mA test current, which is 62.5 times brighter than the HLMP4700L at 2mA. Use in a low-power circuit would result in excessive brightness and potential component damage due to overcurrent. Circuit redesign with appropriate current-limiting resistors is mandatory, and the resulting brightness would exceed application requirements.