SSL-LX3044SRC/E Equivalent & Substitute Parts

Part Overview

The SSL-LX3044SRC/E is a red LED indication component manufactured by Lumex Opto/Components Inc. in T-1 through-hole configuration. This discrete 1.8V radial LED delivers 850mcd at 20mA test current with a 660nm peak wavelength and 30° viewing angle. The component is Active status and ROHS3 compliant with unlimited moisture sensitivity rating.

Substitute parts are identified to address inventory availability, regional sourcing requirements, or specific application parameter needs while maintaining functional compatibility within the red LED indication category.

Key Parameters

Parameter	SSL-LX3044SRC/E
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	850mcd
Wavelength - Peak	660nm
Viewing Angle	30°
Mounting Type	Through Hole
Package / Case	Radial
Height (Max)	4.60mm
Product Status	Active
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution logic for the SSL-LX3044SRC/E is based on the following allowed parameters:

Primary Compatibility Criteria:

Color: Red
Mounting Type: Through Hole
Package / Case: Radial
Lens Style: Round with Domed Top
Configuration: Standard
Compliance: ROHS3 Compliant, REACH status acceptable

Secondary Compatibility Parameters:

Lens Size: 3mm or 3.10mm T-1 diameter
Voltage - Forward (Vf): 1.7V to 2.05V range
Current - Test: 10mA to 20mA
Viewing Angle: 22° to 45°
Height (Max): 4.60mm to 6.55mm

Substitute parts are grouped into two categories:

Category A - Direct Substitutes (Closest Parameter Match): Parts with clear lens transparency, 1.8V forward voltage, 20mA test current, and 3mm T-1 lens size. These include HLMP-K105, HLMP-K105-J0002, and LTL42EKEKNN.

Category B - Compatible Alternatives (Extended Parameter Range): Parts with acceptable parameter variance in forward voltage (1.7V to 2.05V), millicandela rating, or viewing angle while maintaining core mechanical and electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Vf (Typ)	Current - Test	mcd Rating	Peak Wavelength	Viewing Angle	Height (Max)	Lens Transparency	Packaging
SSL-LX3044SRC/E	Lumex Opto/Components Inc.	1.8V	20mA	850mcd	660nm	30°	4.60mm	Clear	Bulk
HLMP-K105	Broadcom Limited	1.8V	20mA	65mcd	645nm	45°	6.35mm	Clear	Bulk
HLMP-K105-J0002	Broadcom Limited	1.8V	20mA	65mcd	645nm	45°	6.35mm	Clear	Cut Tape (CT)
HLMP-K155	Broadcom Limited	1.7V	1mA	3mcd	660nm	45°	6.35mm	Clear	Bulk
HLMP-Y601-J0000	Broadcom Limited	2V	20mA	680mcd	633nm	45°	5.20mm	Clear	Bulk
HLMP-Y651-G0000	Broadcom Limited	2V	20mA	300mcd	652nm	45°	5.20mm	Clear	Bulk
LTL42EKEKNN	Lite-On Inc.	2.05V	20mA	880mcd	632nm	22°	6.55mm	Clear	Bulk
LTL1CHKEKNN	Lite-On Inc.	2.05V	20mA	680mcd	632nm	45°	5.20mm	Clear	Bulk
LTL1CHKRKNN	Lite-On Inc.	2V	20mA	400mcd	639nm	45°	5.20mm	Clear	Bulk
151031SS04000	Würth Elektronik	2V	20mA	160mcd	640nm	40°	5.55mm	Diffused	Bulk
SLR-343VC3F	Rohm Semiconductor	2V	10mA	25mcd	N/A	40°	5.60mm	Clear	Bulk

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Characteristics):

HLMP-K105 and HLMP-K105-J0002 (Broadcom Limited) match the 1.8V forward voltage and 20mA test current of the SSL-LX3044SRC/E. Both are Active status and ROHS3 compliant. HLMP-K105-J0002 is available in Cut Tape packaging with 20,739 units in stock, compared to 2,300 units for bulk HLMP-K105. Height difference of 1.75mm (6.35mm vs 4.60mm) must be verified for PCB clearance in space-constrained applications.

For High Brightness Applications:

LTL42EKEKNN (Lite-On Inc.) delivers 880mcd at 2.05V forward voltage, exceeding the SSL-LX3044SRC/E brightness by 30mcd. Narrower 22° viewing angle concentrates light output. REACH status is Affected. Inventory: 15,968 units.

HLMP-Y601-J0000 (Broadcom Limited) provides 680mcd at 2V with 45° viewing angle and 5.20mm height. REACH status is Unaffected. Inventory: 6,519 units.

For Low Current Applications:

HLMP-K155 (Broadcom Limited) operates at 1mA test current versus 20mA, suitable for battery-powered or low-power indicator circuits. Forward voltage is 1.7V. Millicandela rating is 3mcd. REACH status is Unaffected. Inventory: 100,300 units.

For Diffused Lens Requirement:

151031SS04000 (Würth Elektronik) is the only substitute with diffused lens transparency. Forward voltage is 2V, millicandela rating is 160mcd. Wavelength dominant is 635nm. Inventory: 1,188 units.

Compliance Verification:

All listed substitutes are ROHS3 compliant. REACH status varies: Unaffected (Broadcom, Lumex, Würth Elektronik, Rohm) or Affected (Lite-On LTL1CHKRKNN, LTL42EKEKNN). Verify REACH compliance requirements for your application region before selection.

Frequently Asked Questions (FAQ)

Q: Can HLMP-K105 replace SSL-LX3044SRC/E in a 1:1 substitution?

A: HLMP-K105 shares identical forward voltage (1.8V) and test current (20mA) with SSL-LX3044SRC/E. Both are T-1 through-hole radial packages with clear lenses. Primary difference is millicandela rating (65mcd vs 850mcd) and height (6.35mm vs 4.60mm). Verify brightness requirement and PCB clearance before substitution.

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

A: Both parts are electrically and mechanically identical. HLMP-K105-J0002 is packaged in Cut Tape (CT) format with 20,739 units available, while HLMP-K105 is bulk packaged with 2,300 units. Cut Tape packaging is suitable for automated assembly processes.

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

A: Narrower viewing angles concentrate light output in a specific direction, increasing brightness perception within that cone. LTL42EKEKNN delivers 880mcd compared to SSL-LX3044SRC/E's 850mcd. Select based on application requirements: wider angles (45°) for general indication, narrower angles (22°-30°) for focused light output.

Q: Can I use 151031SS04000 as a substitute if my application requires a clear lens?

A: No. 151031SS04000 features a diffused lens, not clear. Diffused lenses scatter light over a wider area with reduced intensity. For clear lens requirement, select from HLMP-K105, HLMP-K105-J0002, HLMP-K155, HLMP-Y601-J0000, HLMP-Y651-G0000, LTL42EKEKNN, LTL1CHKEKNN, LTL1CHKRKNN, or SLR-343VC3F.

Q: What forward voltage range is acceptable for SSL-LX3044SRC/E substitution?

A: SSL-LX3044SRC/E operates at 1.8V typical. Acceptable substitutes range from 1.7V (HLMP-K155) to 2.05V (LTL42EKEKNN, LTL1CHKEKNN). Verify circuit design accommodates forward voltage variance. Higher forward voltage (2V+) may require circuit adjustment for current-limiting resistor values.

Q: Which substitute has the highest inventory availability?

A: HLMP-K155 (Broadcom Limited) has 100,300 units in stock, significantly exceeding other options. This part operates at 1mA test current and 3mcd brightness, suitable for low-power indicator applications only.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitutes are ROHS3 compliant. REACH status varies: Broadcom, Lumex, Würth Elektronik, and Rohm parts are REACH Unaffected. Lite-On LTL1CHKRKNN and LTL42EKEKNN are REACH Affected. Verify regional compliance requirements.

Q: Can I substitute SSL-LX3044SRC/E with SLR-343VC3F?

A: SLR-343VC3F (Rohm Semiconductor) is mechanically compatible (3.10mm T-1 through-hole radial) but operates at 10mA test current versus 20mA, with 25mcd brightness versus 850mcd. This part is suitable only for low-brightness indicator applications. Peak wavelength data is not provided.

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