HLMP3750A Red LED T-1 3/4 Through Hole Equivalent & Substitute Parts

Part Overview

The HLMP3750A is a red LED indicator manufactured by Visual Communications Company (VCC) in a T-1 3/4 through-hole package. This discrete 2.2V radial LED is designed for red indication applications with a 150 millicandela rating and 24° viewing angle. The product is classified as obsolete, making identification of equivalent substitute parts essential for design continuity, production support, and legacy system maintenance.

Substiute Parts

HLMP3750A

Visual Communications Company - VCCIn Stock: 741HLMP3750A Datasheet

Current PartRFQ

MV3750

onsemiIn Stock: 815MV3750 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HLMP3750A is determined by strict alignment of the following critical parameters:

Primary Substitution Criteria:

• Color: Red
• Lens Transparency: Clear
• Millicandela Rating: 150mcd
• Lens Size: 5mm, T-1 3/4
• Voltage - Forward (Vf) Typical: 2.2V
• Current - Test: 20mA
• Viewing Angle: 24°
• Mounting Type: Through Hole
• Wavelength - Peak: 635nm
• Package / Case: Radial
• Supplier Device Package: T-1 3/4

The MV3750 manufactured by onsemi meets all primary substitution criteria. Both parts share identical electrical characteristics (2.2V forward voltage, 20mA test current), optical properties (150mcd, 24° viewing angle, 635nm peak wavelength), and mechanical specifications (T-1 3/4 radial through-hole package). The primary difference is physical height: HLMP3750A maximum height is 12.19mm, while MV3750 maximum height is 8.89mm. This dimensional variance must be evaluated against specific application constraints.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution Eligibility:

The MV3750 (onsemi) qualifies as a direct electrical and optical substitute for the HLMP3750A based on matching forward voltage, test current, millicandela rating, viewing angle, wavelength, and package type. Both parts are REACH Unaffected and classified under identical HTSUS codes.

Compliance Considerations:

The HLMP3750A carries ROHS3 Compliant certification. The MV3750 RoHS status is not specified in the provided data. Verification of RoHS compliance for the MV3750 is required before selection in applications with RoHS mandates.

Moisture Sensitivity Differential:

The MV3750 demonstrates superior moisture handling characteristics with MSL 1 (Unlimited storage) compared to the HLMP3750A MSL 2 (1 Year storage). This represents an advantage for long-term inventory management and supply chain resilience.

Physical Dimension Consideration:

The 3.30mm height difference (HLMP3750A 12.19mm maximum vs. MV3750 8.89mm maximum) must be evaluated against PCB layout constraints, clearance requirements, and mechanical assembly specifications. Applications with height-restricted designs may require design review before substitution.

Product Status Impact:

Both parts are classified as obsolete. Selection of either part requires confirmation of current availability through authorized distributors. The MV3750 shows 752 pieces in current inventory versus 713 pieces for the HLMP3750A, indicating marginally better near-term availability.

Frequently Asked Questions (FAQ)

Q: Can the MV3750 replace the HLMP3750A in all applications?

A: The MV3750 matches all critical electrical and optical parameters of the HLMP3750A. However, the 3.30mm height difference requires evaluation against specific PCB layout and mechanical clearance requirements. RoHS compliance status of the MV3750 must be confirmed for regulated applications.

Q: What are the key differences between these two parts?

A: The primary differences are: (1) Physical height—HLMP3750A is 12.19mm maximum, MV3750 is 8.89mm maximum; (2) Moisture Sensitivity Level—HLMP3750A is MSL 2 (1 Year), MV3750 is MSL 1 (Unlimited); (3) Manufacturer—VCC versus onsemi.

Q: Are both parts still in production?

A: Both the HLMP3750A and MV3750 are classified as obsolete products. Current availability is limited to existing inventory through authorized distributors. Inventory levels show 713 pieces for HLMP3750A and 752 pieces for MV3750.

Q: What does the T-1 3/4 package designation mean?

A: T-1 3/4 refers to a through-hole LED package with a 5mm lens diameter. The "T-1 3/4" designation indicates the physical form factor and mounting style. Both parts use this identical package specification.

Q: Are there compliance or regulatory differences between these parts?

A: Both parts share identical REACH Status (REACH Unaffected) and ECCN classification (EAR99). The HLMP3750A is confirmed ROHS3 Compliant. RoHS compliance status for the MV3750 is not specified in available data and requires verification.

Q: What is the significance of the 150mcd rating?

A: The 150 millicandela rating specifies the luminous intensity of the LED at the test current of 20mA. Both parts deliver identical brightness output, ensuring equivalent visual indication performance in applications.

Q: Can these parts be used interchangeably in PCB designs?

A: Electrical and optical interchangeability is confirmed. Mechanical interchangeability depends on PCB layout tolerance for the 3.30mm height difference. Through-hole mounting compatibility is identical for both radial packages.