SSL-LX3054HC Equivalent & Substitute Parts Reference

Part Overview

The SSL-LX3054HC 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 2V forward voltage with a 12mcd brightness rating and features a clear, colorless lens with a 30° viewing angle. The component is Active status and ROHS3 compliant.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the same application category. Alternatives are necessary when the primary part reaches end-of-life status, inventory constraints occur, or design flexibility is required across multiple qualified suppliers.

Key Parameters

Parameter	SSL-LX3054HC Value	Substitution Relevance
Color	Red	Critical - Must match
Lens Transparency	Clear	Critical - Affects light transmission
Lens Size	3mm, T-1	Critical - Mechanical fit
Voltage - Forward (Vf) (Typ)	2V	Critical - Circuit compatibility
Current - Test	20mA	Critical - Power supply design
Mounting Type	Through Hole	Critical - PCB assembly
Millicandela Rating	12mcd	Important - Brightness level
Viewing Angle	30°	Important - Optical performance
Wavelength - Peak	700nm	Important - Color specification
Package / Case	Radial	Critical - Lead configuration
RoHS Status	ROHS3 Compliant	Critical - Regulatory compliance

Substitute Part Grouping Explanation

Substitution logic for the SSL-LX3054HC is based on the following mandatory parameters:

Critical Matching Parameters:

Color: Red
Lens Transparency: Clear (colorless lens)
Lens Size: 3mm T-1 form factor
Voltage - Forward (Vf): 2V nominal
Current - Test: 20mA
Mounting Type: Through Hole Radial
Package / Case: Radial configuration
RoHS Status: ROHS3 Compliant

Secondary Compatibility Parameters:

Millicandela Rating: 12mcd baseline (substitutes may vary within application tolerance)
Viewing Angle: 30° baseline (substitutes may vary)
Wavelength - Peak: 700nm baseline (red spectrum range acceptable)
Height (Max): 5.25mm baseline (mechanical clearance consideration)

Substitute parts are grouped into two categories:

Category A - Direct Electrical & Mechanical Equivalents: Parts matching all critical parameters with minimal variation in secondary parameters. These include HLMP-Y601-J0000, HLMP-Y651-G0000, LTL1CHKRKNN, and LTL1CHKEKNN.

Category B - Compatible Alternatives with Parameter Variance: Parts matching critical parameters but with notable differences in brightness (mcd), viewing angle, or wavelength. These include HLMP-K105, HLMP-K105-J0002, HLMP-K155, 151031SS04000, LTL42EKEKNN, and SLR-343VC3F.

Parameter Comparison

Part Number	Manufacturer	Color	Lens Transparency	Lens Size	Vf (Typ)	Current - Test	Millicandela	Viewing Angle	Wavelength - Peak	Height (Max)	Mounting Type	RoHS Status
SSL-LX3054HC	Lumex Opto/Components Inc.	Red	Clear	3mm, T-1	2V	20mA	12mcd	30°	700nm	5.25mm	Through Hole	ROHS3
HLMP-Y601-J0000	Broadcom Limited	Red	Clear	3mm, T-1	2V	20mA	680mcd	45°	633nm	5.20mm	Through Hole	ROHS3
HLMP-Y651-G0000	Broadcom Limited	Red	Clear	3mm, T-1	2V	20mA	300mcd	45°	652nm	5.20mm	Through Hole	ROHS3
HLMP-K105	Broadcom Limited	Red	Clear	3mm, T-1	1.8V	20mA	65mcd	45°	645nm	6.35mm	Through Hole	ROHS3
HLMP-K105-J0002	Broadcom Limited	Red	Clear	3mm, T-1	1.8V	20mA	65mcd	45°	645nm	6.35mm	Through Hole	ROHS3
HLMP-K155	Broadcom Limited	Red	Clear	3mm, T-1	1.7V	1mA	3mcd	45°	660nm	6.35mm	Through Hole	ROHS3
151031SS04000	Würth Elektronik	Red	Diffused	3.00mm Dia	2V	20mA	160mcd	40°	640nm	5.55mm	Through Hole	ROHS3
LTL1CHKEKNN	Lite-On Inc.	Red	Clear	3.10mm Dia	2.05V	20mA	680mcd	45°	632nm	5.20mm	Through Hole	ROHS3
LTL1CHKRKNN	Lite-On Inc.	Red	Clear	3.10mm Dia	2V	20mA	400mcd	45°	639nm	5.20mm	Through Hole	ROHS3
LTL42EKEKNN	Lite-On Inc.	Red	Clear	3mm, T-1	2.05V	20mA	880mcd	22°	632nm	6.55mm	Through Hole	ROHS3
SLR-343VC3F	Rohm Semiconductor	Red	Clear	3.10mm Dia	2V	10mA	25mcd	40°	N/A	5.60mm	Through Hole	ROHS3

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

HLMP-Y601-J0000 and HLMP-Y651-G0000 from Broadcom Limited maintain identical electrical specifications (2V, 20mA) and mechanical form factor (3mm T-1, through-hole radial). Both are ROHS3 compliant and Active status. HLMP-Y601-J0000 provides significantly higher brightness (680mcd) with a 45° viewing angle. HLMP-Y651-G0000 offers moderate brightness (300mcd) with equivalent 45° viewing angle. Both are suitable for direct substitution where brightness variation is acceptable within application design margins.

LTL1CHKRKNN from Lite-On Inc. matches the 2V forward voltage and 20mA test current with 400mcd brightness output. This part is ROHS3 compliant and Active status. Lens size is 3.10mm diameter (compatible with T-1 mechanical envelope). Height is 5.20mm, within acceptable mechanical clearance.

Secondary Substitutes (Parameter Variance):

HLMP-K105 and HLMP-K105-J0002 (Broadcom Limited) operate at 1.8V forward voltage, requiring circuit design verification for voltage compatibility. Both maintain 20mA test current and 3mm T-1 form factor. ROHS3 compliant and Active status. The -J0002 variant is available in Cut Tape packaging with higher inventory (20,739 pcs).

LTL42EKEKNN (Lite-On Inc.) provides 880mcd brightness at 2.05V forward voltage with 20mA test current. Viewing angle is narrower at 22° compared to the 30° baseline. Height is 6.55mm, requiring mechanical clearance verification. ROHS3 compliant and Active status.

Compatibility Considerations:

151031SS04000 (Würth Elektronik) features a diffused lens (not clear), which alters light transmission characteristics. This part is suitable only if diffused light output is acceptable. Brightness is 160mcd at 2V, 20mA. ROHS3 compliant.

HLMP-K155 (Broadcom Limited) operates at significantly reduced current (1mA test vs. 20mA baseline) and lower brightness (3mcd). This part is suitable only for low-power indicator applications and requires circuit redesign.

SLR-343VC3F (Rohm Semiconductor) operates at 10mA test current (not 20mA) and provides 25mcd brightness. Suitable for applications where reduced current draw is required.

All substitute parts listed are ROHS3 compliant and Active status, meeting regulatory requirements equivalent to the primary part.

Frequently Asked Questions (FAQ)

Q: Can HLMP-K105 replace SSL-LX3054HC directly in my circuit?

A: HLMP-K105 operates at 1.8V forward voltage compared to the SSL-LX3054HC baseline of 2V. Direct substitution requires circuit verification to confirm the lower voltage is compatible with your current-limiting resistor design and power supply specifications. The 20mA test current and 3mm T-1 form factor are compatible.

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

A: Both parts are electrically and mechanically identical. The primary difference is packaging: HLMP-K105 is supplied in Bulk packaging, while HLMP-K105-J0002 is supplied in Cut Tape (CT) packaging. HLMP-K105-J0002 has significantly higher inventory availability (20,739 pcs vs. 2,300 pcs).

Q: Why does 151031SS04000 have a diffused lens instead of clear?

A: 151031SS04000 is manufactured by Würth Elektronik with a diffused red lens, which scatters light output compared to the clear lens of SSL-LX3054HC. This part is suitable only if your application requires diffused light distribution rather than focused light output.

Q: Can I use LTL42EKEKNN as a substitute if my application requires low brightness?

A: LTL42EKEKNN produces 880mcd brightness, significantly higher than the SSL-LX3054HC baseline of 12mcd. This part is unsuitable for applications requiring low brightness indication. Use HLMP-K155 (3mcd) or SLR-343VC3F (25mcd) for reduced brightness requirements.

Q: What is the viewing angle difference between SSL-LX3054HC and substitute parts?

A: SSL-LX3054HC has a 30° viewing angle. Most substitute parts (HLMP-Y601-J0000, HLMP-Y651-G0000, HLMP-K105, HLMP-K105-J0002, HLMP-K155, LTL1CHKEKNN, LTL1CHKRKNN) feature 45° viewing angles, providing wider light distribution. LTL42EKEKNN has a narrower 22° viewing angle. 151031SS04000 and SLR-343VC3F have 40° viewing angles. Verify viewing angle compatibility with your optical design requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts listed are ROHS3 compliant, matching the regulatory compliance of SSL-LX3054HC. REACH status varies: most parts are REACH Unaffected or REACH Affected. Verify REACH compliance requirements for your specific application jurisdiction.

Q: What is the height difference between SSL-LX3054HC and substitute parts?

A: SSL-LX3054HC has a maximum height of 5.25mm. Most substitute parts range from 5.20mm to 5.60mm, within acceptable mechanical tolerance. HLMP-K105, HLMP-K105-J0002, and HLMP-K155 are taller at 6.35mm. LTL42EKEKNN is 6.55mm. Verify PCB clearance and component placement constraints before substitution.

Q: Can I substitute based on brightness (mcd) alone?

A: No. Brightness is one parameter among many. Substitution requires matching critical parameters: color (red), lens transparency (clear), lens size (3mm T-1), forward voltage (2V nominal), test current (20mA), mounting type (through-hole radial), and RoHS compliance. Brightness variation is acceptable only if your circuit design accommodates the different mcd rating through resistor adjustment.

Q: Which substitute offers the closest match to SSL-LX3054HC?

A: HLMP-Y651-G0000 provides the closest electrical match: identical 2V forward voltage, 20mA test current, 3mm T-1 form factor, clear lens, through-hole radial mounting, and ROHS3 compliance. Height is 5.20mm (0.05mm shorter than baseline). Brightness is 300mcd (higher than 12mcd baseline). Viewing angle is 45° (wider than 30° baseline).

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