SSL-LX509FT3ID Red LED T-1 3/4 Equivalent & Substitute Parts

Part Overview

The SSL-LX509FT3ID is an active red LED indication component manufactured by Lumex Opto/Components Inc. This through-hole mounted discrete LED operates at 2V forward voltage with a 5mcd brightness rating and features a diffused red lens in a T-1 3/4 form factor. The component is ROHS3 compliant and maintains unlimited moisture sensitivity rating (MSL 1). Finding equivalent substitute parts becomes necessary when managing supply chain continuity, inventory optimization, or when the primary manufacturer part experiences extended lead times or allocation constraints.

Substiute Parts

SSL-LX509FT3ID

Lumex Opto/Components Inc.In Stock: 983SSL-LX509FT3ID Datasheet

Current PartRFQ

HLMP-3301

Broadcom LimitedIn Stock: 28141HLMP-3301 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SSL-LX509FT3ID is determined by strict alignment across the following critical parameters:

Primary Substitution Criteria:

• Color: Red
• Lens Transparency: Diffused
• Lens Size: 5mm, T-1 3/4 form factor
• Mounting Type: Through Hole
• Package Configuration: Radial

Secondary Compatibility Parameters:

• Voltage - Forward (Vf): Operating range tolerance within typical application circuits
• Current - Test: Rated test current compatibility
• Millicandela Rating: Brightness level within functional requirements
• Viewing Angle: Field of view characteristics
• Peak Wavelength: Red spectrum alignment (635nm reference)
• Height (Max): Physical clearance constraints
• Compliance: ROHS3 and REACH status alignment

The HLMP-3301 manufactured by Broadcom Limited qualifies as a substitute part based on matching the primary substitution criteria across all mechanical and optical parameters.

Parameter Comparison

Engineering Selection Recommendations

Substitution Feasibility:

The HLMP-3301 is a qualified substitute for the SSL-LX509FT3ID based on matching mechanical form factor, optical properties, and regulatory compliance status. Both components are ROHS3 compliant, REACH unaffected, and maintain MSL 1 rating.

Circuit Design Considerations:

The forward voltage difference of 0.1V (SSL-LX509FT3ID at 2V versus HLMP-3301 at 1.9V) is within typical tolerance ranges for LED indication circuits. The test current specification difference (20mA versus 10mA) reflects different manufacturer characterization methods and does not preclude substitution; however, the actual operating current in the application circuit must be verified against both datasheets.

Optical Performance Variance:

The viewing angle specification differs between parts: SSL-LX509FT3ID provides 100° while HLMP-3301 provides 60°. This represents a narrower field of view for the substitute part. Applications requiring wide-angle indication should account for this parameter difference in optical design validation.

Compliance and Supply Chain:

Both parts maintain identical regulatory status (ROHS3, REACH unaffected, EAR99 ECCN classification). The HLMP-3301 maintains significantly higher inventory availability (28,097 pcs versus 966 pcs), supporting supply chain continuity objectives.

Frequently Asked Questions (FAQ)

Q: Can the HLMP-3301 be used as a direct drop-in replacement for the SSL-LX509FT3ID?

A: The HLMP-3301 is mechanically and optically compatible as a substitute. Both components share identical T-1 3/4 form factor, radial package configuration, and diffused red lens properties. The 0.41mm height difference is negligible for standard through-hole PCB applications. However, the narrower 60° viewing angle of the HLMP-3301 versus the 100° angle of the SSL-LX509FT3ID must be evaluated against specific application requirements.

Q: What is the significance of the forward voltage difference between these parts?

A: The SSL-LX509FT3ID operates at 2V typical forward voltage while the HLMP-3301 operates at 1.9V typical. This 0.1V difference is within normal tolerance ranges for LED indication circuits and typically does not require circuit redesign. The actual operating point depends on the series resistor value and supply voltage in the application circuit.

Q: Why do the test current specifications differ?

A: The SSL-LX509FT3ID specifies 20mA test current while the HLMP-3301 specifies 10mA test current. These values represent the manufacturer's characterization conditions and do not indicate that the substitute part cannot operate at higher currents. The actual operating current in the application circuit is determined by circuit design and must be verified against both component datasheets.

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

A: No. Both the SSL-LX509FT3ID and HLMP-3301 maintain identical regulatory status: ROHS3 compliant, REACH unaffected, MSL 1 (unlimited moisture sensitivity), and EAR99 ECCN classification. Both are suitable for applications with equivalent compliance requirements.

Q: What is the impact of the viewing angle difference?

A: The SSL-LX509FT3ID provides a 100° viewing angle while the HLMP-3301 provides a 60° viewing angle. This means the HLMP-3301 has a narrower field of view. Applications requiring wide-angle indication visibility should evaluate whether the 60° angle of the substitute part meets optical performance requirements.

Q: How do the brightness ratings compare?

A: The SSL-LX509FT3ID is rated at 5mcd while the HLMP-3301 is rated at 5.4mcd. These brightness levels are comparable, with the HLMP-3301 providing slightly higher luminous intensity. Both are suitable for standard LED indication applications.

Q: What packaging differences exist between these parts?

A: The SSL-LX509FT3ID is supplied in tape packaging while the HLMP-3301 is supplied in bulk packaging. This difference affects inventory management and component handling but does not impact electrical or mechanical compatibility.