HLMPD401 Orange LED T-1 3/4 Through Hole - Equivalent & Substitute Parts

Part Overview

The HLMPD401 is an orange LED indicator manufactured by onsemi, designed for through-hole mounting applications. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance requirements. The HLMPD401 provides orange light indication at 612nm peak wavelength with a 7mcd brightness rating, suitable for standard indicator applications requiring discrete radial LED solutions.

Substiute Parts

HLMPD401

onsemiIn Stock: 947HLMPD401 Datasheet

Current PartRFQ

5219704F

DialightIn Stock: 13595219704F Datasheet

SimilarRFQ

HLMP-D401

Broadcom LimitedIn Stock: 28503HLMP-D401 Datasheet

SimilarRFQ

SLR-56DU3F

Rohm SemiconductorIn Stock: 13257SLR-56DU3F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HLMPD401 are qualified based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Color: Orange
• Mounting Type: Through Hole (Radial package)
• Lens Size: 5mm, T-1 3/4 form factor
• Voltage - Forward (Vf): 1.9V nominal
• Current - Test: 10mA
• Viewing Angle: 60°
• Millicandela Rating: 7mcd

Secondary Considerations:

• Wavelength - Peak: 612nm (acceptable range 600-612nm for orange indication)
• Height (Max): 8.89-9.57mm (standard through-hole PCB clearance)
• Package / Case: Radial configuration
• Moisture Sensitivity Level: 1 (Unlimited)

The three substitute parts listed meet the primary compatibility criteria and are available from active manufacturers with current production status and RoHS3 compliance.

Parameter Comparison

Engineering Selection Recommendations

HLMP-D401 (Broadcom Limited) is the primary substitute for the HLMPD401. This part maintains identical lens size (5mm, T-1 3/4), forward voltage (1.9V), current rating (10mA), and viewing angle (60°). The part is in active production status with ROHS3 compliance certification. Inventory availability is substantial (28,467 pcs). The millicandela rating is slightly lower at 5.4mcd compared to the original 7mcd, which may require circuit verification in brightness-critical applications.

5219704F (Dialight) provides an alternative with matching electrical parameters (1.9V, 10mA, 7mcd) and viewing angle (60°). The lens size is slightly smaller at 4.83mm diameter, which may affect mechanical fit in applications with tight lens aperture tolerances. This part is in active production with ROHS3 compliance and high inventory availability (1,340 pcs).

SLR-56DU3F (Rohm Semiconductor) offers the highest brightness rating at 10mcd with identical lens size (5mm, T-1 3/4) and mounting configuration. The forward voltage is 2V (compared to 1.9V), requiring circuit verification to ensure proper current limiting. The viewing angle is narrower at 40° compared to the original 60°, which may impact visibility in wide-angle applications. This part is in active production with ROHS3 compliance (13,238 pcs available).

All three substitute parts carry REACH Unaffected and EAR99 ECCN classifications matching the original component.

Frequently Asked Questions (FAQ)

Q: Can the HLMP-D401 (Broadcom) be used as a direct replacement for the HLMPD401 (onsemi)?

A: Yes. Both parts share identical lens size (5mm, T-1 3/4), forward voltage (1.9V), current rating (10mA), and viewing angle (60°). The primary difference is the millicandela rating (5.4mcd vs. 7mcd). Verify that the reduced brightness is acceptable for your application before implementation.

Q: What is the impact of the 0.1V forward voltage difference in the SLR-56DU3F?

A: The SLR-56DU3F operates at 2V forward voltage compared to 1.9V for the original HLMPD401. This 0.1V difference affects the current-limiting resistor calculation. Recalculate the series resistor value using Ohm's law to maintain the 10mA test current. Failure to adjust the resistor may result in over-current or under-current operation.

Q: Does the narrower viewing angle of the SLR-56DU3F (40° vs. 60°) affect compatibility?

A: The narrower viewing angle concentrates light output in a smaller cone. This is acceptable only if the application does not require wide-angle visibility. Verify viewing angle requirements in your circuit design before substitution.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The HLMP-D401 (Broadcom), 5219704F (Dialight), and SLR-56DU3F (Rohm) are all ROHS3 compliant. The original HLMPD401 (onsemi) RoHS status is not specified in the available data.

Q: What is the mechanical fit consideration for the 5219704F with its 4.83mm lens diameter?

A: The 5219704F has a slightly smaller lens diameter (4.83mm) compared to the standard 5mm of other parts. If your PCB design includes a lens aperture or bezel sized for 5mm components, the 5219704F may not fit properly. Verify mechanical clearances before selection.

Q: Which substitute part has the best inventory availability?

A: The HLMP-D401 (Broadcom) has the highest inventory with 28,467 pcs in stock, followed by 5219704F (Dialight) with 1,340 pcs, and SLR-56DU3F (Rohm) with 13,238 pcs.