SSL-LX3044SRC/F Equivalent & Substitute Parts

Part Overview

The SSL-LX3044SRC/F is a red LED indication component manufactured by Lumex Opto/Components Inc., designed for through-hole mounting applications. This T-1 form factor LED operates at 1.8V forward voltage with a 1100mcd brightness rating and 660nm peak wavelength, providing clear lens visibility with a 30° viewing angle. The component is Active status and ROHS3 compliant. Substitute parts are identified to address inventory availability, alternative packaging formats, or specific application requirements while maintaining functional compatibility within the red LED indication category.

Key Parameters

Parameter	SSL-LX3044SRC/F
Manufacturer	Lumex Opto/Components Inc.
Color	Red
Lens Transparency	Clear
Lens Size	3mm, T-1
Voltage - Forward (Vf) Typical	1.8V
Current - Test	20mA
Millicandela Rating	1100mcd
Wavelength - Peak	660nm
Viewing Angle	30°
Mounting Type	Through Hole
Package / Case	Radial
Supplier Device Package	T-1
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the SSL-LX3044SRC/F are grouped based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

Color: Red
Mounting Type: Through Hole
Lens Style: Round with Domed Top
Package / Case: Radial
Configuration: Standard

Secondary Compatibility Parameters:

Voltage - Forward (Vf) Typical: 1.8V to 2.05V range
Current - Test: 20mA nominal operation
Lens Size: 3mm T-1 form factor
Lens Transparency: Clear preferred for direct visibility
RoHS Status: ROHS3 Compliant required

Substitutes are identified where forward voltage remains within acceptable circuit design tolerances (1.7V to 2.05V), maintaining the same through-hole radial package configuration. Brightness (millicandela) and viewing angle variations are acceptable based on application-specific requirements. All substitute parts maintain Active product status and ROHS3 compliance.

Parameter Comparison

Part Number	Manufacturer	Color	Lens Transparency	Lens Size	Vf (Typ)	Current - Test	mcd Rating	Peak Wavelength	Viewing Angle	Height (Max)	Mounting Type	Package	Product Status	RoHS Status
SSL-LX3044SRC/F	Lumex	Red	Clear	3mm, T-1	1.8V	20mA	1100mcd	660nm	30°	4.60mm	Through Hole	Radial	Active	ROHS3
HLMP-K155	Broadcom Limited	Red	Clear	3mm, T-1	1.7V	1mA	3mcd	660nm	45°	6.35mm	Through Hole	Radial	Active	ROHS3
HLMP-Y601-J0000	Broadcom Limited	Red	Clear	3mm, T-1	2V	20mA	680mcd	633nm	45°	5.20mm	Through Hole	Radial	Active	ROHS3
HLMP-K105	Broadcom Limited	Red	Clear	3mm, T-1	1.8V	20mA	65mcd	645nm	45°	6.35mm	Through Hole	Radial	Active	ROHS3
HLMP-K105-J0002	Broadcom Limited	Red	Clear	3mm, T-1	1.8V	20mA	65mcd	645nm	45°	6.35mm	Through Hole	Radial	Active	ROHS3
151031SS04000	Würth Elektronik	Red	Diffused	3.00mm Dia	2V	20mA	160mcd	640nm	40°	5.55mm	Through Hole	Radial	Active	ROHS3
HLMP-Y651-G0000	Broadcom Limited	Red	Clear	3mm, T-1	2V	20mA	300mcd	652nm	45°	5.20mm	Through Hole	Radial	Active	ROHS3
LTL42EKEKNN	Lite-On Inc.	Red	Clear	3mm, T-1	2.05V	20mA	880mcd	632nm	22°	6.55mm	Through Hole	Radial	Active	ROHS3
LTL1CHKEKNN	Lite-On Inc.	Red	Clear	3.10mm Dia	2.05V	20mA	680mcd	632nm	45°	5.20mm	Through Hole	Radial	Active	ROHS3
LTL1CHKRKNN	Lite-On Inc.	Red	Clear	3.10mm Dia	2V	20mA	400mcd	639nm	45°	5.20mm	Through Hole	Radial	Active	ROHS3
SLR-343VC3F	Rohm Semiconductor	Red	Clear	3.10mm Dia	2V	10mA	25mcd	630nm	40°	5.60mm	Through Hole	Radial	Active	ROHS3

Engineering Selection Recommendations

Direct Voltage-Matched Substitutes (1.8V Forward Voltage):

HLMP-K105 and HLMP-K105-J0002 operate at identical 1.8V forward voltage as the SSL-LX3044SRC/F. Both are Broadcom Limited products with Active status and ROHS3 compliance. HLMP-K105-J0002 is available in Cut Tape packaging (20,739 pcs inventory) versus Bulk packaging for HLMP-K105 (2,300 pcs inventory). These parts are suitable for direct circuit substitution where forward voltage matching is critical. Brightness reduction from 1100mcd to 65mcd requires application-level verification.

Higher Brightness Alternatives (2V Forward Voltage Range):

HLMP-Y601-J0000 (Broadcom Limited) provides 680mcd brightness at 2V forward voltage with Active status and ROHS3 compliance. LTL42EKEKNN (Lite-On Inc.) delivers 880mcd brightness at 2.05V forward voltage, closest to the SSL-LX3044SRC/F brightness specification, with Active status and ROHS3 compliance. Both require circuit design accommodation for the increased forward voltage. LTL42EKEKNN features a narrower 22° viewing angle compared to the original 30°.

Moderate Brightness Options (2V Forward Voltage Range):

HLMP-Y651-G0000 (Broadcom Limited) provides 300mcd at 2V with Active status and ROHS3 compliance. LTL1CHKEKNN and LTL1CHKRKNN (Lite-On Inc.) offer 680mcd and 400mcd respectively at 2.05V and 2V forward voltages, both with Active status and ROHS3 compliance. These options accommodate applications requiring intermediate brightness levels.

Low Brightness Indicator Applications:

HLMP-K155 (Broadcom Limited) operates at 1.7V forward voltage with minimal 3mcd brightness, suitable for low-power indicator circuits. Active status and ROHS3 compliance confirmed.

Diffused Lens Alternative:

151031SS04000 (Würth Elektronik) provides diffused lens transparency at 2V forward voltage with 160mcd brightness. This part differs from the clear lens specification of the SSL-LX3044SRC/F and is suitable only where diffused light distribution is acceptable. Active status and ROHS3 compliance confirmed.

All substitute parts maintain Through Hole mounting type, Radial package configuration, and red color specification. Product status is Active for all alternatives. ROHS3 compliance is universal across all listed substitutes.

Frequently Asked Questions (FAQ)

Q: Can HLMP-K105 or HLMP-K105-J0002 be used as direct replacements for SSL-LX3044SRC/F?

A: Both HLMP-K105 variants match the 1.8V forward voltage specification exactly. However, brightness is significantly reduced from 1100mcd to 65mcd. Direct substitution is possible only if the application circuit does not depend on the higher brightness output. Verify that the 65mcd output meets visibility requirements before implementation.

Q: What is the difference between HLMP-K105 and HLMP-K105-J0002?

A: Both parts are electrically and mechanically identical. The difference is packaging format: HLMP-K105 is supplied in Bulk packaging (2,300 pcs available), while HLMP-K105-J0002 is supplied in Cut Tape format (20,739 pcs available). Select based on assembly process requirements and inventory availability.

Q: Can I use LTL42EKEKNN as a substitute if my circuit operates at 2V?

A: LTL42EKEKNN operates at 2.05V forward voltage and delivers 880mcd brightness, which is closer to the SSL-LX3044SRC/F brightness than most alternatives. However, the viewing angle is narrower at 22° compared to the original 30°. Substitution is valid only if the narrower viewing angle does not compromise application requirements. Verify optical coverage in the target application.

Q: Why does 151031SS04000 have a diffused lens while SSL-LX3044SRC/F has a clear lens?

A: 151031SS04000 is a diffused lens variant designed for applications requiring scattered light distribution. The SSL-LX3044SRC/F clear lens provides direct, focused light output. These are functionally different optical designs. Use 151031SS04000 only if diffused light distribution is acceptable for the application.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant certification, matching the SSL-LX3044SRC/F compliance status. All parts are also Active status products.

Q: What forward voltage range is acceptable for substitution?

A: The SSL-LX3044SRC/F operates at 1.8V. Substitutes range from 1.7V (HLMP-K155) to 2.05V (LTL42EKEKNN and LTL1CHKEKNN). Circuit design must accommodate the selected forward voltage. Parts operating at 1.7V to 1.8V require minimal circuit modification. Parts at 2V or higher require verification that the power supply and current-limiting resistor design can support the increased voltage drop.

Q: Which substitute offers the closest brightness match?

A: LTL42EKEKNN (Lite-On Inc.) delivers 880mcd brightness at 2.05V forward voltage, the closest match to the SSL-LX3044SRC/F 1100mcd specification. This part requires 2.05V circuit accommodation and features a narrower 22° viewing angle.

Q: Can I substitute based on wavelength alone?

A: No. Wavelength is one parameter among many. Forward voltage, brightness (millicandela), viewing angle, lens transparency, and package configuration must all be evaluated together. A substitute with matching wavelength but different forward voltage or brightness may not function correctly in the target circuit.

Q: What is the inventory status of substitute parts?

A: HLMP-K105-J0002 has the highest inventory at 20,739 pcs. LTL1CHKRKNN has 65,304 pcs available. HLMP-K155 has 100,300 pcs available. Verify current inventory with your supplier before design finalization.

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