SSL-LX3044SRC/G Equivalent & Substitute Parts

Part Overview

The SSL-LX3044SRC/G 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 1300mcd 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/G
Manufacturer	Lumex Opto/Components Inc.
Color	Red
Lens Transparency	Clear
Lens Size	3mm, T-1
Voltage - Forward (Vf) (Typ)	1.8V
Current - Test	20mA
Millicandela Rating	1300mcd
Wavelength - Peak	660nm
Viewing Angle	30°
Mounting Type	Through Hole
Package / Case	Radial
Height (Max)	4.60mm
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

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

Primary Compatibility Criteria:

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

Secondary Compatibility Parameters:

Voltage - Forward (Vf): 1.8V to 2.05V range
Current - Test: 20mA nominal operation
Lens Size: 3mm T-1 form factor
Wavelength - Peak: 624nm to 660nm (red spectrum)

Substitutes are identified where these parameters align with the main part specifications. Variations in millicandela rating, viewing angle, and height are acceptable within the red LED indication category, as these represent performance characteristics rather than fundamental compatibility barriers. All substitute parts maintain Active product status and ROHS3 compliance.

Parameter Comparison

Part Number	Manufacturer	Color	Lens Transparency	Vf (Typ)	Current - Test	mcd Rating	Peak Wavelength	Viewing Angle	Lens Size	Height (Max)	Packaging	RoHS Status
SSL-LX3044SRC/G	Lumex Opto/Components Inc.	Red	Clear	1.8V	20mA	1300mcd	660nm	30°	3mm, T-1	4.60mm	-	ROHS3
HLMP-K105	Broadcom Limited	Red	Clear	1.8V	20mA	65mcd	645nm	45°	3mm, T-1	6.35mm	Bulk	ROHS3
HLMP-K105-J0002	Broadcom Limited	Red	Clear	1.8V	20mA	65mcd	645nm	45°	3mm, T-1	6.35mm	Cut Tape (CT)	ROHS3
HLMP-K155	Broadcom Limited	Red	Clear	1.7V	1mA	3mcd	660nm	45°	3mm, T-1	6.35mm	Bulk	ROHS3
HLMP-Y601-J0000	Broadcom Limited	Red	Clear	2V	20mA	680mcd	633nm	45°	3mm, T-1	5.20mm	Bulk	ROHS3
HLMP-Y651-G0000	Broadcom Limited	Red	Clear	2V	20mA	300mcd	652nm	45°	3mm, T-1	5.20mm	Bulk	ROHS3
LTL1CHKEKNN	Lite-On Inc.	Red	Clear	2.05V	20mA	680mcd	632nm	45°	3.10mm Dia	5.20mm	Bulk	ROHS3
LTL1CHKRKNN	Lite-On Inc.	Red	Clear	2V	20mA	400mcd	639nm	45°	3.10mm Dia	5.20mm	Bulk	ROHS3
LTL42EKEKNN	Lite-On Inc.	Red	Clear	2.05V	20mA	880mcd	632nm	22°	3mm, T-1	6.55mm	Bulk	ROHS3
151031SS04000	Würth Elektronik	Red	Diffused	2V	20mA	160mcd	640nm	40°	3.00mm Dia	5.55mm	Bulk	ROHS3
SLR-343VC3F	Rohm Semiconductor	Red	Clear	2V	10mA	25mcd	-	40°	3.10mm Dia	5.60mm	Bulk	ROHS3

Engineering Selection Recommendations

Direct Substitutes (Matched Vf and Current):

HLMP-K105 and HLMP-K105-J0002 share identical electrical specifications (1.8V, 20mA) with the SSL-LX3044SRC/G. The primary difference is packaging format: HLMP-K105-J0002 is supplied in Cut Tape (CT) format, while HLMP-K105 is Bulk. Both are Active status and ROHS3 compliant. Height variation (6.35mm vs. 4.60mm) must be evaluated for PCB clearance requirements.

Higher Voltage Substitutes (2V Forward Voltage):

HLMP-Y601-J0000, HLMP-Y651-G0000, LTL1CHKEKNN, LTL1CHKRKNN, and LTL42EKEKNN operate at 2V forward voltage with 20mA test current. These parts are suitable where circuit design accommodates the 0.2V increase. All maintain Active product status and ROHS3 compliance. LTL42EKEKNN provides the highest brightness (880mcd) but with narrower viewing angle (22°).

Low Current Alternative:

HLMP-K155 operates at reduced current (1mA vs. 20mA) with 1.7V forward voltage. This part is appropriate for low-power indicator applications where brightness reduction is acceptable. Peak wavelength matches the main part (660nm).

Lens Transparency Consideration:

151031SS04000 (Würth Elektronik) features diffused lens transparency, differing from the clear lens of SSL-LX3044SRC/G. This substitution is valid only where diffused appearance is functionally acceptable.

All substitute parts are ROHS3 compliant and maintain Active product status, ensuring regulatory compliance and ongoing manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can HLMP-K105 directly replace SSL-LX3044SRC/G in existing designs?

A: HLMP-K105 shares the same forward voltage (1.8V) and test current (20mA), making it electrically compatible. However, the height difference (6.35mm vs. 4.60mm) requires verification against PCB layout constraints. Both parts are T-1 form factor with clear lens and 3mm size.

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

A: These parts are electrically and mechanically identical. The difference is packaging: HLMP-K105 is supplied in Bulk format, while HLMP-K105-J0002 is Cut Tape (CT). Selection depends on assembly process requirements and inventory management.

Q: Why does LTL42EKEKNN have a narrower viewing angle (22°) compared to SSL-LX3044SRC/G (30°)?

A: Viewing angle is determined by lens design and internal LED geometry. LTL42EKEKNN achieves higher brightness (880mcd vs. 1300mcd) through optical concentration, resulting in a narrower beam. This substitution is valid only where the narrower viewing angle meets application requirements.

Q: Can I use HLMP-Y601-J0000 if my circuit is designed for 1.8V?

A: HLMP-Y601-J0000 operates at 2V forward voltage, requiring 0.2V additional supply voltage. Circuit redesign or voltage adjustment is necessary. Direct substitution without circuit modification will result in reduced LED brightness or potential malfunction.

Q: What is the significance of the diffused lens in 151031SS04000?

A: The diffused lens scatters light over a wider area compared to the clear lens of SSL-LX3044SRC/G. This affects visual appearance and brightness distribution. Substitution is valid only where diffused appearance is functionally acceptable for the application.

Q: Are all substitute parts ROHS3 compliant?

A: Yes, all listed substitute parts are ROHS3 compliant. Additionally, all parts maintain Active product status, ensuring ongoing manufacturer support and availability.

Q: How do I select between multiple substitute options?

A: Selection criteria are: (1) Forward voltage compatibility with circuit design, (2) Brightness (mcd) requirements for visibility, (3) Viewing angle for application geometry, (4) Height constraints for PCB layout, (5) Packaging format for assembly process. Evaluate each parameter against your specific application requirements.

Q: What is the impact of current rating differences (1mA vs. 20mA)?

A: Current rating indicates the test condition at which brightness is specified. HLMP-K155 operates at 1mA, producing significantly lower brightness (3mcd vs. 1300mcd). This part is suitable only for low-power indicator applications where reduced brightness is acceptable.

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