MT7403A-UR-A Equivalent & Substitute Parts

Part Overview

The MT7403A-UR-A is a red LED indication component manufactured by Marktech Optoelectronics, designed for through-hole mounting applications. This 3mm round LED operates at 1.9V forward voltage with a 200mcd brightness rating and 643nm dominant wavelength. The component is currently active in production and RoHS compliant.

Substitute parts are identified when equivalent electrical and mechanical parameters align within acceptable tolerances for the application category. Alternatives may be required due to inventory availability, packaging format preferences, or supply chain considerations.

Substiute Parts

MT7403A-UR-A

Marktech OptoelectronicsIn Stock: 2757MT7403A-UR-A Datasheet

Current PartRFQ

HLMP-1321

Broadcom LimitedIn Stock: 2471HLMP-1321 Datasheet

SimilarRFQ

HLMP-1321-G0002

Broadcom LimitedIn Stock: 6071HLMP-1321-G0002 Datasheet

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HLMP-Y301-F0000

Broadcom LimitedIn Stock: 50286HLMP-Y301-F0000 Datasheet

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LTL-1CHEE

Lite-On Inc.In Stock: 57089LTL-1CHEE Datasheet

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LTL-4222N

Lite-On Inc.In Stock: 51236LTL-4222N Datasheet

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SLR-332VC3F

Rohm SemiconductorIn Stock: 20625SLR-332VC3F Datasheet

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SLR-342VCTB7

Rohm SemiconductorIn Stock: 2871SLR-342VCTB7 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts are grouped based on the following critical parameters that determine functional equivalence:

• Color & Wavelength: Red spectrum (620–660nm range)
• Mounting Type: Through-hole radial configuration
• Lens Size: 3mm class (3.0–3.2mm diameter)
• Lens Transparency: Clear
• Forward Voltage: 1.9–2.1V range
• Test Current: 10–20mA
• Compliance: RoHS3 compliant or RoHS compliant

Parts are considered substitutable when they maintain red color indication, through-hole mounting, and compatible electrical operating parameters. Variations in millicandela rating, viewing angle, and exact wavelength are acceptable within the red LED indication category.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Status)

HLMP-1321 and HLMP-1321-G0002 (Broadcom Limited) maintain 1.9V forward voltage matching the MT7403A-UR-A and are actively produced. HLMP-1321-G0002 is available in Cut Tape packaging with higher inventory (6053 pcs) compared to bulk packaging of HLMP-1321 (2400 pcs).

LTL-4222N (Lite-On Inc.) operates at 2V forward voltage with 29mcd brightness and is actively produced with 51,200 pcs in stock. This part accommodates the voltage tolerance range and maintains T-1 form factor compatibility.

SLR-332VC3F (Rohm Semiconductor) operates at 2V forward voltage with 10mcd brightness and is actively produced with 20,567 pcs in stock. This part provides the widest viewing angle (85°) among substitutes.

Secondary Substitutes (Active Status)

HLMP-Y301-F0000 (Broadcom Limited) operates at 2.1V forward voltage with 19mcd brightness. This part has the highest inventory availability (50,178 pcs) and is actively produced, though forward voltage is at the upper tolerance limit.

LTL-1CHEE (Lite-On Inc.) operates at 2V forward voltage with 19mcd brightness and is actively produced with 56,990 pcs in stock. REACH status is affected for this part.

Not Recommended for New Designs

SLR-342VCTB7 (Rohm Semiconductor) is marked "Not For New Designs" and should not be selected for new applications despite meeting electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can HLMP-1321 directly replace MT7403A-UR-A?

A: HLMP-1321 maintains the same 1.9V forward voltage and red color specification. The primary difference is millicandela rating (30mcd vs. 200mcd). Direct replacement is valid when brightness reduction is acceptable for the application. Both parts use through-hole radial mounting with 3mm clear lenses.

Q: What is the difference between HLMP-1321 and HLMP-1321-G0002?

A: Both parts are electrically and mechanically identical. HLMP-1321-G0002 is supplied in Cut Tape packaging, while HLMP-1321 is supplied in Bulk packaging. Selection depends on assembly process requirements and inventory availability.

Q: Why do substitute parts have lower millicandela ratings?

A: The MT7403A-UR-A operates at 200mcd, which is a high brightness specification. Most substitute parts in the 3mm red LED category operate at 10–30mcd. Substitution is valid when the application does not require the original brightness level. If brightness is critical, verify that the lower mcd rating meets visibility requirements.

Q: Are all substitute parts RoHS compliant?

A: All listed substitutes are RoHS3 compliant. The MT7403A-UR-A is RoHS compliant. Both certifications meet regulatory requirements. LTL-1CHEE and LTL-4222N have REACH Affected status, while other substitutes have REACH Unaffected status.

Q: Can I use parts with 2V forward voltage instead of 1.9V?

A: Parts operating at 2V forward voltage (LTL-1CHEE, LTL-4222N, SLR-332VC3F, SLR-342VCTB7) are within acceptable tolerance for red LED indication circuits. Circuit design must accommodate the 0.1V difference. HLMP-Y301-F0000 operates at 2.1V, which is at the upper tolerance limit and requires verification that the driving circuit can supply this voltage.

Q: Which substitute has the best inventory availability?

A: LTL-1CHEE has the highest inventory with 56,990 pcs in stock, followed by HLMP-Y301-F0000 with 50,178 pcs. Both are actively produced and available for immediate procurement.

Q: Should I avoid SLR-342VCTB7?

A: SLR-342VCTB7 is marked "Not For New Designs" by the manufacturer. While it meets electrical and mechanical parameters, it should not be selected for new product development. Use active alternatives instead.