MV54644 Equivalent & Substitute Parts Reference

Part Overview

The MV54644 is a green diffused LED in T-1 (3mm) through-hole package manufactured by Everlight Electronics Co Ltd. This component serves as a discrete green indication light with a forward voltage of 2.2V and 10mcd brightness rating. The part is currently in active production status with 854 units available in inventory.

Substitute parts become necessary when the primary MV54644 experiences supply constraints, extended lead times, or when design flexibility permits component standardization across multiple suppliers. The HLMP1523 from onsemi represents a parametric equivalent option, though it carries an obsolete product status designation.

Substiute Parts

MV54644

Everlight Electronics Co LtdIn Stock: 963MV54644 Datasheet

Current PartRFQ

HLMP1523

onsemiIn Stock: 927HLMP1523 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MV54644 is determined by strict equivalence across the following critical parameters:

Optical Parameters: Color (Green), lens transparency (Diffused), millicandela rating (10mcd), peak wavelength (562nm), and viewing angle (90°) must match exactly.

Electrical Parameters: Forward voltage (2.2V typical) and test current (20mA) must be identical to ensure circuit compatibility without redesign.

Mechanical Parameters: Lens size (3mm T-1), mounting type (through-hole), package configuration (radial), lens style (round with domed top), and maximum height (6.30mm) must align for PCB footprint and assembly compatibility.

The HLMP1523 from onsemi satisfies all these criteria as a parametric equivalent, despite its obsolete product status classification.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: MV54644 from Everlight Electronics is the recommended choice for new designs and production builds. The part maintains active product status, ensuring long-term availability and supply chain stability. RoHS3 compliance certification confirms environmental and regulatory alignment with current manufacturing standards.

Substitute Selection: HLMP1523 from onsemi functions as a parametric equivalent for applications where supply of the MV54644 is unavailable. However, the obsolete product status of HLMP1523 indicates that onsemi has discontinued active manufacturing and support. Selection of this substitute should be limited to legacy system maintenance or temporary supply gap mitigation only.

Compliance Consideration: The MV54644 carries explicit RoHS3 compliance certification. The HLMP1523 compliance status is not specified in available documentation. Designs subject to RoHS regulatory requirements should prioritize the MV54644 to ensure documented compliance.

Inventory Status: MV54644 inventory stands at 854 units in stock. HLMP1523 inventory is listed at 871 units. Both parts are currently available through distribution channels.

Frequently Asked Questions (FAQ)

Q: Can HLMP1523 be used as a direct replacement for MV54644 in existing designs?

A: Yes, from a parametric standpoint. All critical electrical, optical, and mechanical specifications are identical. The components share the same forward voltage (2.2V), test current (20mA), brightness (10mcd), wavelength (562nm), package (T-1 radial through-hole), and physical dimensions. No circuit redesign is required for substitution.

Q: Why is HLMP1523 marked as obsolete if it is parametrically equivalent?

A: Product status reflects the manufacturer's production and support lifecycle, not technical capability. onsemi has discontinued active manufacturing of HLMP1523, meaning new production runs are not available. Existing inventory may still be obtainable through distribution channels, but long-term availability cannot be guaranteed. The MV54644 remains in active production by Everlight Electronics.

Q: Are there any compliance differences between MV54644 and HLMP1523?

A: MV54644 carries explicit RoHS3 compliance certification. HLMP1523 compliance status is not documented in the provided specifications. For applications requiring RoHS compliance verification, MV54644 is the confirmed choice. HLMP1523 should not be selected for designs with mandatory RoHS requirements unless compliance documentation can be obtained directly from onsemi.

Q: What is the significance of the 90° viewing angle specification?

A: The 90° viewing angle indicates the total angular range across which the LED maintains usable brightness. This specification is identical for both MV54644 and HLMP1523, confirming that light distribution characteristics are equivalent. Both components are suitable for applications requiring wide-angle indication.

Q: Can HLMP1523 be used in new production designs?

A: Not recommended. While HLMP1523 is parametrically equivalent, its obsolete status means onsemi provides no active support or guaranteed future availability. New designs should specify MV54644 to ensure supply chain continuity and manufacturer support throughout the product lifecycle.

Q: What does "diffused" lens transparency mean for these components?

A: Diffused transparency indicates that the lens material scatters light internally, producing a uniform glow across the lens surface rather than a concentrated beam. Both MV54644 and HLMP1523 feature diffused lenses, making them suitable for indicator applications where even light distribution is required.

Q: Are the radial package configurations identical between the two parts?

A: Yes. Both MV54644 and HLMP1523 use radial package configuration with identical lead geometry, spacing, and through-hole mounting requirements. PCB footprints are interchangeable without modification.