SSL-LX3054IT Red LED T-1 Through Hole Equivalent & Substitute Parts

Part Overview

The SSL-LX3054IT is a red LED indication component manufactured by Lumex Opto/Components Inc., designed for through-hole mounting applications. This T-1 form factor LED features a 3mm clear domed lens with 45 millicandela brightness rating and operates at 2V forward voltage with 20mA test current. The component is ROHS3 compliant and currently in active production status with 832 pieces available in inventory.

Substitute parts are necessary when the primary component experiences supply constraints, extended lead times, or when design flexibility permits selection from qualified alternatives that meet equivalent electrical and mechanical specifications.

Key Parameters

Parameter	SSL-LX3054IT Value
Color	Red
Lens Transparency	Clear
Lens Size	3mm, T-1
Lens Style	Round with Domed Top
Voltage - Forward (Vf) Typical	2V
Current - Test	20mA
Millicandela Rating	45mcd
Viewing Angle	30°
Mounting Type	Through Hole
Package / Case	Radial
Wavelength - Peak	635nm
Height Maximum	5.25mm
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the SSL-LX3054IT is determined by strict alignment with the following critical parameters:

Primary Substitution Criteria:

Color: Red
Lens Transparency: Clear
Mounting Type: Through Hole
Package Configuration: Radial T-1 form factor
Lens Style: Round with Domed Top
Lens Size: 3mm nominal diameter

Secondary Compatibility Parameters:

Voltage - Forward (Vf): 1.9V to 2.1V range
Current - Test: 10mA to 20mA range
Millicandela Rating: 8.7mcd minimum
Viewing Angle: 20° to 85° range
Height Maximum: 4.60mm to 6.55mm range
Wavelength - Peak: 623nm to 650nm range
RoHS3 Compliance: Required
Moisture Sensitivity Level: 1 or 2A acceptable

Parts meeting all primary criteria and falling within secondary parameter ranges are qualified as direct substitutes. Deviations in any primary criterion disqualify a part from substitution consideration.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Vf (Typ)	Current - Test	mcd Rating	Viewing Angle	Height (Max)	Wavelength - Peak	Product Status	Packaging
SSL-LX3054IT	Lumex Opto/Components Inc.	2V	20mA	45mcd	30°	5.25mm	635nm	Active	Bulk
HLMP-1321	Broadcom Limited	1.9V	10mA	30mcd	45°	6.35mm	635nm	Active	Bulk
HLMP-1321-G0002	Broadcom Limited	1.9V	10mA	30mcd	45°	6.35mm	635nm	Active	Cut Tape (CT)
HLMP-Y301-F0000	Broadcom Limited	2.1V	20mA	19mcd	45°	5.20mm	635nm	Active	Bulk
LTL-1CHEE	Lite-On Inc.	2V	20mA	19mcd	45°	5.20mm	635nm	Active	Bulk
LTL-4222	Lite-On Inc.	2V	10mA	8.7mcd	20°	6.55mm	635nm	Active	Bulk
LTL-4222N	Lite-On Inc.	2V	10mA	29mcd	45°	5.85mm	635nm	Active	Bulk
SLR-332VC3F	Rohm Semiconductor	2V	10mA	10mcd	85°	4.60mm	Not Specified	Active	Bulk
SLR-342VCTB7	Rohm Semiconductor	2V	10mA	25mcd	40°	5.40mm	650nm	Not For New Designs	Tape & Box (TB)
WP710A10IT	Kingbright	2V	20mA	30mcd	34°	5.90mm	627nm	Active	Bulk

Engineering Selection Recommendations

Tier 1 - Preferred Substitutes (Active Status, Full Compliance):

HLMP-Y301-F0000 (Broadcom Limited) and WP710A10IT (Kingbright) are the primary recommended substitutes. Both components maintain active production status, ROHS3 compliance, and operate at the same 2V forward voltage with 20mA test current as the SSL-LX3054IT. HLMP-Y301-F0000 provides 19mcd brightness with 45° viewing angle and 5.20mm height. WP710A10IT delivers 30mcd brightness with 34° viewing angle and 5.90mm height, offering closer brightness parity to the original component.

Tier 2 - Secondary Substitutes (Active Status, Minor Parameter Variance):

HLMP-1321 and HLMP-1321-G0002 (Broadcom Limited) operate at 1.9V forward voltage with reduced 10mA test current, resulting in lower power consumption. These components deliver 30mcd brightness with 45° viewing angle. The HLMP-1321-G0002 variant offers Cut Tape packaging for automated assembly applications. LTL-4222N (Lite-On Inc.) provides 29mcd brightness at 2V with 10mA test current and 45° viewing angle, suitable for applications tolerating reduced current draw.

Tier 3 - Limited Substitutes (Active Status, Significant Parameter Deviation):

LTL-1CHEE (Lite-On Inc.) matches the 2V/20mA electrical specification but delivers only 19mcd brightness. SLR-332VC3F (Rohm Semiconductor) operates at 2V/10mA with 10mcd brightness and exceptional 85° viewing angle, applicable only to wide-angle indication requirements. LTL-4222 (Lite-On Inc.) provides the lowest brightness at 8.7mcd with 20° narrow viewing angle and 2A moisture sensitivity level.

Not Recommended:

SLR-342VCTB7 (Rohm Semiconductor) carries "Not For New Designs" product status and is unsuitable for new applications despite meeting electrical and mechanical criteria.

Frequently Asked Questions (FAQ)

Q: Can HLMP-1321 replace SSL-LX3054IT in existing designs?

A: HLMP-1321 meets all primary substitution criteria (red color, clear lens, T-1 through-hole radial package, 3mm form factor). However, it operates at 1.9V forward voltage with 10mA test current versus the original 2V/20mA specification. Circuit designs must accommodate reduced forward voltage and current draw. Brightness output is 30mcd compared to 45mcd, representing a 33% reduction in luminous intensity.

Q: What is the difference between HLMP-1321 and HLMP-1321-G0002?

A: Both variants are electrically and mechanically identical. The primary distinction is packaging format: HLMP-1321 is supplied in Bulk packaging, while HLMP-1321-G0002 is supplied in Cut Tape (CT) format. Cut Tape packaging is optimized for automated pick-and-place assembly equipment. Inventory availability differs: 2400 pieces for Bulk versus 6053 pieces for Cut Tape.

Q: Does WP710A10IT provide better brightness than SSL-LX3054IT?

A: WP710A10IT delivers 30mcd brightness compared to SSL-LX3054IT's 45mcd rating, representing a 33% reduction. Both components operate at identical 2V forward voltage and 20mA test current. WP710A10IT offers slightly wider viewing angle at 34° versus 30°, with marginally increased height of 5.90mm versus 5.25mm.

Q: Are all substitute parts ROHS3 compliant?

A: All listed substitute parts carry ROHS3 compliance certification. LTL-1CHEE and LTL-4222N indicate REACH Affected status, while remaining substitutes show REACH Unaffected status. This distinction does not affect ROHS3 compliance but may impact supply chain documentation requirements in specific regulatory jurisdictions.

Q: Which substitute offers the closest electrical match to SSL-LX3054IT?

A: HLMP-Y301-F0000 and WP710A10IT both maintain the 2V forward voltage and 20mA test current specifications. HLMP-Y301-F0000 provides 19mcd brightness with 5.20mm height, while WP710A10IT delivers 30mcd brightness with 5.90mm height. WP710A10IT offers superior brightness parity to the original component.

Q: Can LTL-4222 be used as a substitute despite lower brightness?

A: LTL-4222 meets primary substitution criteria but operates at 10mA test current with only 8.7mcd brightness and 20° narrow viewing angle. It is suitable only for applications where reduced brightness and narrow viewing angle are acceptable. Additionally, LTL-4222 carries 2A moisture sensitivity level versus the original component's unlimited MSL rating, requiring controlled storage conditions.

Q: Why is SLR-342VCTB7 not recommended despite meeting specifications?

A: SLR-342VCTB7 carries "Not For New Designs" product status, indicating the manufacturer has discontinued active development and support for this component. While electrically and mechanically compatible, this status disqualifies it from new design applications. Existing designs currently using this part may continue operation, but new implementations should select from Active status alternatives.

Q: What viewing angle differences exist among substitutes?

A: Viewing angles range from 20° (LTL-4222, narrow beam) to 85° (SLR-332VC3F, wide beam). SSL-LX3054IT specifies 30° viewing angle. HLMP-1321, HLMP-Y301-F0000, and LTL-4222N offer 45° viewing angles, providing wider light distribution. WP710A10IT at 34° closely matches the original specification. Selection depends on application requirements for light beam concentration versus distribution.

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