QTLP9132 Equivalent & Substitute Parts

Part Overview

The QTLP9132 is a red LED indication component manufactured by onsemi, featuring a subminiature T-3/4 axial configuration with diffused lens technology. This part is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity. The component delivers 15mcd brightness at 20mA test current with a 2V forward voltage and 50° viewing angle, designed for through-hole axial mounting applications.

Substiute Parts

QTLP9132

onsemiIn Stock: 795QTLP9132 Datasheet

Current PartRFQ

HLMP-6305

Broadcom LimitedIn Stock: 9554HLMP-6305 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the QTLP9132 is based on the following critical parameters that define functional and mechanical compatibility:

Electrical Compatibility Criteria:

• Color: Red (maintained across substitutes)
• Peak Wavelength: 635nm (maintained)
• Mounting Type: Through Hole, Axial (maintained)
• Package Configuration: Axial, Flat Leads (maintained)

Allowable Parameter Variations:

• Forward Voltage (Vf): 1.8V to 2V range acceptable for series resistor adjustment in typical indicator circuits
• Test Current: 10mA to 20mA range acceptable with circuit redesign
• Millicandela Rating: Brightness variation from 15mcd to 40mcd acceptable depending on application requirements
• Viewing Angle: 28° to 50° range acceptable for different application geometries
• Lens Transparency: Both diffused and clear lenses acceptable for red indication applications

The HLMP-6305 substitute meets all critical compatibility criteria while offering active product status and improved availability.

Parameter Comparison

Engineering Selection Recommendations

HLMP-6305 Substitution Basis:

The HLMP-6305 qualifies as a direct substitute for the obsolete QTLP9132 based on the following engineering factors:

1. Product Status & Availability: The HLMP-6305 maintains active product status with 9504 units in stock, addressing the obsolescence constraint of the QTLP9132.

2. Regulatory Compliance: The HLMP-6305 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The QTLP9132 compliance status is not specified.

3. Functional Equivalence: Both components share identical color (red), peak wavelength (635nm), mounting type (through-hole axial), and package configuration (axial flat leads).

4. Electrical Compatibility: The 0.2V forward voltage difference (2V vs. 1.8V) and 10mA test current are within acceptable ranges for standard series resistor circuit compensation in indicator applications.

5. Optical Characteristics: While the HLMP-6305 features a clear lens versus the diffused lens of the QTLP9132, both are suitable for red indication applications. The higher brightness rating (40mcd vs. 15mcd) provides design margin and can be managed through circuit current limiting.

6. Physical Compatibility: Axial flat lead configuration and through-hole mounting are identical. Minor lens diameter variation (1.91mm vs. 2mm) requires PCB footprint verification but does not preclude substitution.

Frequently Asked Questions (FAQ)

Q: Can the HLMP-6305 directly replace the QTLP9132 without circuit modification?

A: The HLMP-6305 is mechanically and functionally compatible for through-hole axial mounting. However, the 0.2V forward voltage difference and higher brightness rating (40mcd vs. 15mcd) may require series resistor adjustment to maintain consistent indicator brightness in the target application. Verify circuit current limiting design.

Q: What is the impact of the lens transparency difference (diffused vs. clear)?

A: The QTLP9132 diffused lens provides uniform light distribution across a 50° viewing angle. The HLMP-6305 clear lens concentrates light within a 28° viewing angle with higher intensity. Select based on application requirements: diffused lenses for wide-angle indication, clear lenses for focused indication.

Q: Are there physical compatibility concerns with the lens size difference?

A: The QTLP9132 features a 2mm T-3/4 lens while the HLMP-6305 is 1.91mm diameter. Both use axial flat lead configurations. Verify PCB mounting hole spacing and component clearance before substitution.

Q: What are the storage and handling differences?

A: The QTLP9132 has MSL 1 (unlimited moisture sensitivity), while the HLMP-6305 has MSL 2A (4 weeks). The HLMP-6305 requires standard controlled storage procedures. This does not preclude substitution but requires standard component handling protocols.

Q: Is the HLMP-6305 suitable for applications requiring the original 15mcd brightness specification?

A: The HLMP-6305 delivers 40mcd at 10mA test current, exceeding the original 15mcd specification. Circuit design must incorporate appropriate current limiting to achieve target brightness levels if the original specification is critical.

Q: Are there regulatory or compliance advantages to using the HLMP-6305?

A: The HLMP-6305 is ROHS3 compliant with active product status, addressing both environmental compliance and long-term availability concerns associated with the obsolete QTLP9132.