LTL-4292 Equivalent & Substitute Parts

Part Overview

The LTL-4292 is a red 621nm LED indication component manufactured by Lite-On Inc., configured as a T-1 through-hole radial device with 60mcd brightness. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The LTL-4292 delivers red light indication at 2V forward voltage with a 20° viewing angle in a 3mm domed lens package.

Substiute Parts

LTL-4292

Lite-On Inc.In Stock: 726LTL-4292 Datasheet

Current PartRFQ

484-10SURT/S530-A3

Everlight Electronics Co LtdIn Stock: 1058484-10SURT/S530-A3 Datasheet

MFR RecommendedRFQ

HLMP-1321

Broadcom LimitedIn Stock: 2471HLMP-1321 Datasheet

MFR RecommendedRFQ

HLMP-1321-G0002

Broadcom LimitedIn Stock: 6071HLMP-1321-G0002 Datasheet

MFR RecommendedRFQ

HLMP-Y301-F0000

Broadcom LimitedIn Stock: 50286HLMP-Y301-F0000 Datasheet

MFR RecommendedRFQ

SLR-332VC3F

Rohm SemiconductorIn Stock: 20625SLR-332VC3F Datasheet

MFR RecommendedRFQ

SLR-332VCT32

Rohm SemiconductorIn Stock: 1141SLR-332VCT32 Datasheet

MFR RecommendedRFQ

SLR-342VCTB7

Rohm SemiconductorIn Stock: 2871SLR-342VCTB7 Datasheet

MFR RecommendedRFQ

SSL-LX3054OT

Lumex Opto/Components Inc.In Stock: 1214SSL-LX3054OT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTL-4292 are selected based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Color: Red
• Lens Size: 3mm, T-1 form factor
• Mounting Type: Through Hole Radial
• Lens Transparency: Clear
• Voltage - Forward (Vf): 2V nominal range (1.9V to 2.1V acceptable)
• Current - Test: 10mA to 20mA operating range
• Wavelength - Dominant: 621nm to 630nm red spectrum
• Millicandela Rating: 10mcd to 60mcd brightness range
• Viewing Angle: 20° to 130° acceptable for indication applications
• Moisture Sensitivity Level: 1 (Unlimited)

The substitute parts listed below meet these criteria while offering active product status or equivalent electrical performance. Variations in millicandela rating, viewing angle, and exact wavelength are acceptable within the red LED indication category, provided the forward voltage and current ratings remain compatible with the original circuit design.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Active Product Status):

HLMP-1321 and HLMP-1321-G0002 from Broadcom Limited are the closest functional equivalents. Both maintain the T-1 3mm form factor, domed lens style, and 10mA test current. The 1.9V forward voltage is within acceptable tolerance for 2V circuits. The 30mcd brightness and 45° viewing angle provide suitable indication performance. HLMP-1321-G0002 offers superior availability in Cut Tape packaging with 6053 units in stock.

SLR-332VC3F and SLR-332VCT32 from Rohm Semiconductor maintain exact 2V forward voltage and 10mA test current specifications. The 3.20mm lens diameter and 4.60mm height represent minor mechanical variations. The 85° viewing angle provides wider light distribution than the original 20°. Both parts carry ROHS3 compliance and unlimited moisture sensitivity rating.

HLMP-Y301-F0000 from Broadcom Limited offers the highest inventory availability at 50,178 units. The 2.1V forward voltage and 20mA test current require circuit verification but remain within acceptable operating parameters for red LED indication circuits. The 5.20mm height and 45° viewing angle are compatible with standard through-hole PCB layouts.

Secondary Substitutes (Limited Availability or Status Constraints):

SLR-342VCTB7 from Rohm Semiconductor is marked "Not For New Designs" but remains available with 2795 units in stock. The 25mcd brightness and 40° viewing angle provide adequate indication performance. This part is suitable only for legacy system maintenance and repair applications.

484-10SURT/S530-A3 from Everlight Electronics offers active status with 994 units available. The flat-top lens style and 130° wide viewing angle differ from the original domed configuration. The 4.10mm height is the shortest among substitutes. This part is suitable for applications requiring wide-angle light distribution.

Color Variant:

SSL-LX3054OT from Lumex Opto/Components Inc. is an orange LED with 630nm peak wavelength. This part is listed as a substitute only when orange indication is functionally acceptable in the application. The 50mcd brightness and 30° viewing angle provide comparable performance to the original red LED.

Frequently Asked Questions (FAQ)

Q: Can I use HLMP-1321 as a direct replacement for LTL-4292?

A: Yes. HLMP-1321 maintains the same T-1 3mm form factor, through-hole radial mounting, and domed lens configuration. The 1.9V forward voltage is compatible with 2V circuits. The 30mcd brightness is lower than the original 60mcd, but remains suitable for standard indication applications. Verify that your circuit design accommodates the 45° viewing angle versus the original 20°.

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

A: Both parts are electrically and mechanically identical. The difference is packaging: HLMP-1321 is supplied in Bulk packaging, while HLMP-1321-G0002 is supplied in Cut Tape (CT) packaging. HLMP-1321-G0002 offers significantly higher inventory availability (6053 units versus 2400 units) and is recommended for production applications requiring tape-and-reel format.

Q: Why is the SLR-332 series listed as a substitute if the lens diameter is 3.20mm instead of 3mm?

A: The 3.20mm lens diameter represents a 0.20mm increase, which is within standard mechanical tolerance for T-1 through-hole LED applications. The domed lens style, clear transparency, and radial package configuration remain identical. The 4.60mm height is shorter than the original 6.55mm, which may require PCB layout verification for height-constrained applications.

Q: Can I use SSL-LX3054OT (orange) instead of the red LTL-4292?

A: SSL-LX3054OT is functionally compatible only if your application accepts orange indication instead of red. The 630nm peak wavelength produces orange light rather than red. The 50mcd brightness and 30° viewing angle are comparable to the original specifications. Use this part only when color substitution is acceptable in your circuit design.

Q: What does "Not For New Designs" mean for SLR-342VCTB7?

A: This designation indicates that Rohm Semiconductor does not recommend this part for new product development. However, the part remains available for legacy system maintenance and repair. SLR-342VCTB7 is suitable only for sustaining production of existing designs that already incorporate this component.

Q: Which substitute offers the best availability?

A: HLMP-Y301-F0000 from Broadcom Limited offers the highest inventory availability at 50,178 units in stock. This part maintains 2V forward voltage compatibility and provides active product status. The 20mA test current and 5.20mm height are within acceptable parameters for standard through-hole LED applications.

Q: Are all substitute parts RoHS3 compliant?

A: All substitute parts listed carry ROHS3 Compliant certification. The original LTL-4292 does not specify RoHS status. All substitutes meet current environmental compliance requirements for electronic component manufacturing and distribution.

Q: What viewing angle should I select?

A: The original LTL-4292 specifies 20° viewing angle for narrow-beam indication. Substitutes range from 30° to 130°. Select based on your application: narrow viewing angles (20° to 45°) for focused indicator lights; wide viewing angles (85° to 130°) for distributed light indication visible from multiple directions.