HLMPD400 Orange LED T-1 3/4 Through Hole - Equivalent & Substitute Parts

Part Overview

The HLMPD400 is an orange LED indicator manufactured by onsemi, designed for through-hole mounting applications. This component features a 5mm T-1 3/4 lens form factor with a domed top, delivering 4.6mcd at 10mA forward current and a 1.9V typical forward voltage. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing design support and production continuity.

Substiute Parts

HLMPD400

onsemiIn Stock: 838HLMPD400 Datasheet

Current PartRFQ

5219704F

DialightIn Stock: 13595219704F Datasheet

SimilarRFQ

WP7113NT

KingbrightIn Stock: 906WP7113NT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HLMPD400 is determined by the following critical parameters:

• Color: Orange (all substitutes must match)
• Mounting Type: Through Hole (all substitutes must match)
• Package / Case: Radial (all substitutes must match)
• Voltage - Forward (Vf): 1.9V nominal operation (substitutes within 0.15V tolerance acceptable for standard indicator applications)
• Current - Test: 10mA baseline (substitutes rated for 10mA or higher acceptable)
• Lens Form Factor: T-1 3/4 or equivalent 5mm diameter preferred for mechanical fit
• Wavelength - Peak: 612nm orange spectrum (600-612nm range acceptable for visual indication)

The following parts meet these substitution criteria and are available in active production status.

Parameter Comparison

Engineering Selection Recommendations

5219704F (Dialight 521 Series)

This substitute maintains identical forward voltage (1.9V) and test current (10mA) specifications. The 4.83mm lens diameter represents a minor mechanical variation from the 5mm T-1 3/4 form factor but remains compatible with standard 5mm LED mounting holes. The diffused lens transparency and 7mcd rating provide increased light diffusion compared to the original part. The part is ROHS3 compliant and carries active production status, ensuring long-term availability.

WP7113NT (Kingbright)

This substitute operates at 2.05V forward voltage with a 20mA test current, representing a higher brightness option at 70mcd. The clear lens transparency and narrower 20° viewing angle differ from the original specification. Mechanical compatibility is maintained with the T-1 3/4 5mm form factor and 8.60mm height. The part is ROHS3 compliant and actively produced. Circuit design modifications may be required to accommodate the increased forward voltage and current rating.

Both substitutes are REACH unaffected and classified under ECCN EAR99 with HTSUS code 8541.41.0000, matching the regulatory profile of the original part.

Frequently Asked Questions (FAQ)

Q: Can the 5219704F replace the HLMPD400 in existing designs without circuit modification?

A: Yes. The 5219704F maintains the same 1.9V forward voltage and 10mA test current as the HLMPD400. The 4.83mm lens diameter is mechanically compatible with standard 5mm LED mounting holes. The primary difference is increased brightness (7mcd vs. 4.6mcd) and diffused lens transparency, which may alter visual appearance but will not affect electrical circuit operation.

Q: What are the implications of using the WP7113NT as a substitute?

A: The WP7113NT operates at 2.05V forward voltage and 20mA test current, requiring circuit design review. The higher brightness (70mcd) and narrower viewing angle (20° vs. 60°) represent significant functional changes. Current-limiting resistor values must be recalculated to accommodate the increased forward voltage and current rating. This substitute is suitable only when the circuit design can be modified to support these parameters.

Q: Are all substitute parts RoHS compliant?

A: Yes. Both 5219704F and WP7113NT are ROHS3 compliant. The original HLMPD400 RoHS status is not specified in available documentation.

Q: Do the substitute parts maintain the same mechanical form factor?

A: Both substitutes use the radial through-hole package with round domed-top lens styling. The 5219704F has a 4.83mm lens diameter (vs. 5mm original), and the WP7113NT maintains the 5mm T-1 3/4 form factor. Heights vary slightly: 5219704F at 9.57mm, WP7113NT at 8.60mm, and original at 8.89mm. All are compatible with standard 5mm LED mounting holes.

Q: What is the wavelength difference between substitutes?

A: The HLMPD400 operates at 612nm peak wavelength. The 5219704F is rated at 600nm, and the WP7113NT at 607nm. All three fall within the orange spectrum range and are visually indistinguishable for standard indicator applications.