SSL-LXA228IC Equivalent & Substitute Parts

Part Overview

The SSL-LXA228IC is an active red LED indication component manufactured by Lumex Opto/Components Inc., designed for through-hole axial mounting applications. This discrete 2V red LED features a clear domed lens with 30mcd brightness rating and 635nm peak wavelength. The component is ROHS3 compliant and maintains unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent functional performance can be achieved within the allowed electrical and mechanical parameter ranges for axial through-hole red LED applications.

Substiute Parts

SSL-LXA228IC

Lumex Opto/Components Inc.In Stock: 845SSL-LXA228IC Datasheet

Current PartRFQ

HLMP-Q102

Broadcom LimitedIn Stock: 2519HLMP-Q102 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SSL-LXA228IC are identified based on strict alignment with the following allowed parameters:

Mandatory Matching Criteria:

• Mounting Type: Through Hole, Axial
• Package / Case: Axial, Flat Leads
• Color: Red
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

Allowable Parameter Variation Ranges:

• Voltage - Forward (Vf): ±0.2V tolerance (1.8V to 2.2V acceptable)
• Current - Test: 20mA standard operating point
• Millicandela Rating: Brightness may vary; substitutes with higher brightness (100mcd) are acceptable for indication applications
• Viewing Angle: May vary (25° to 35° acceptable for standard indication use)
• Lens Transparency: Clear or diffused acceptable for red indication
• Lens Size: Minor dimensional variation acceptable within axial form factor constraints
• Height (Max): Variation acceptable within standard through-hole assembly limits

The HLMP-Q102 substitute meets all mandatory criteria and operates within allowable parameter ranges for functional equivalence in red LED indication circuits.

Parameter Comparison

Engineering Selection Recommendations

SSL-LXA228IC Selection Criteria:

• Primary choice when unlimited moisture sensitivity (MSL 1) is required
• Preferred for applications with extended storage or high-humidity environments
• Suitable for designs requiring 30mcd brightness with 25° viewing angle
• Recommended when clear lens optical characteristics are specified

HLMP-Q102 Selection Criteria:

• Acceptable substitute when moisture sensitivity level MSL 2A (4-week shelf life) is compatible with supply chain and storage procedures
• Preferred when higher brightness (100mcd) provides design margin for indication visibility
• Suitable for applications benefiting from wider 35° viewing angle
• Compatible when diffused red lens optical characteristics meet application requirements
• Forward voltage of 1.9V requires verification that current-limiting resistor values remain within acceptable range for the circuit design

Compliance Verification: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying environmental regulatory requirements for equivalent applications.

Frequently Asked Questions (FAQ)

Q: Can HLMP-Q102 be used as a direct replacement for SSL-LXA228IC in existing PCB designs?

A: Yes, within the constraints of moisture sensitivity handling. Both components share identical mounting type (through-hole axial), package configuration (axial flat leads), and physical form factor compatibility. The 0.1V forward voltage difference (2V vs. 1.9V) requires verification that the current-limiting resistor value remains appropriate for the circuit. The HLMP-Q102 requires MSL 2A storage procedures (4-week shelf life), whereas the SSL-LXA228IC has unlimited storage capability.

Q: What is the impact of the brightness difference between 30mcd and 100mcd?

A: The HLMP-Q102 provides approximately 3.3 times higher brightness at the same 20mA test current. For indication applications, this increased brightness is acceptable and provides additional design margin. If the original design requires exactly 30mcd brightness, the higher output of the HLMP-Q102 may require circuit adjustment or is simply accepted as improved visibility.

Q: Are there differences in optical characteristics between the clear lens (SSL-LXA228IC) and diffused red lens (HLMP-Q102)?

A: Yes. The SSL-LXA228IC features a colorless clear lens with 25° viewing angle, while the HLMP-Q102 has a red diffused lens with 35° viewing angle. The diffused lens provides wider light distribution and softer appearance. Both are suitable for red LED indication; the choice depends on specific visual requirements and aesthetic preferences.

Q: What is the significance of the MSL rating difference?

A: The SSL-LXA228IC has MSL 1 (unlimited moisture sensitivity), meaning it can be stored indefinitely without moisture control. The HLMP-Q102 has MSL 2A (4-week shelf life), requiring controlled storage conditions after the moisture barrier bag is opened. For high-volume production with rapid component usage, this difference is typically negligible. For low-volume or long-term inventory applications, the SSL-LXA228IC offers logistical advantages.

Q: Do the wavelength differences (635nm vs. 654nm) affect substitution compatibility?

A: Both wavelengths fall within the red spectrum and are visually indistinguishable for indication applications. The 635nm (SSL-LXA228IC) is slightly more orange-red, while 654nm (HLMP-Q102) is slightly more pure red. For standard indication use, this difference is not functionally significant.

Q: What forward voltage consideration applies when substituting HLMP-Q102 for SSL-LXA228IC?

A: The HLMP-Q102 operates at 1.9V typical forward voltage compared to 2V for the SSL-LXA228IC. This 0.1V difference affects the current-limiting resistor calculation. Verify that the existing resistor value produces acceptable current (approximately 20mA) with the lower forward voltage. If the circuit uses a fixed resistor, the HLMP-Q102 will draw slightly more current; if the circuit uses a current source, no adjustment is required.