LTL-2H3VRKNT Equivalent & Substitute Parts

Part Overview

The LTL-2H3VRKNT is a red LED indicator from Lite-On Inc., featuring a 5mm T-1 3/4 through-hole package with 2400mcd brightness at 631nm dominant wavelength. This part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part operates at 1.9V forward voltage with a 20mA test current and provides a 15° viewing angle in a clear, domed lens configuration.

Key Parameters

Parameter	Value
Manufacturer Part Number	LTL-2H3VRKNT
Manufacturer	Lite-On Inc.
Color	Red
Lens Size	5mm, T-1 3/4
Lens Style	Round with Domed Top
Lens Transparency	Clear
Voltage - Forward (Vf) Typical	1.9V
Current - Test	20mA
Millicandela Rating	2400mcd
Wavelength - Dominant	631nm
Wavelength - Peak	639nm
Viewing Angle	15°
Mounting Type	Through Hole
Package / Case	Radial
Height (Max)	8.70mm
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LTL-2H3VRKNT is determined by the following critical parameters:

Primary Compatibility Criteria:

Color: Red
Lens Size: 5mm, T-1 3/4
Lens Style: Round with Domed Top
Lens Transparency: Clear
Mounting Type: Through Hole
Package / Case: Radial
Current - Test: 20mA

Secondary Compatibility Parameters:

Voltage - Forward (Vf) Typical: 1.9V to 2.0V (acceptable tolerance range)
Wavelength - Dominant: 624nm to 639nm (red spectrum range)
Millicandela Rating: 2400mcd minimum
Viewing Angle: 6° to 30° (application-dependent)
Height (Max): 8.70mm to 8.91mm (PCB clearance tolerance)

The substitute parts listed below meet all primary criteria and fall within acceptable ranges for secondary parameters. All substitutes maintain the same through-hole radial package configuration and are compatible with existing PCB layouts designed for the LTL-2H3VRKNT.

Parameter Comparison

Parameter	LTL-2H3VRKNT	333-2SURC/H3/S400-A6	333-2SURC/H3/S400-A8	383-2SDRC/S530-A4	383-2SURC/S530-A6	7343-2USRC/S1060	HLMP-EG08-VY000	HLMP-EG08-WZ000	HLMP-EG08-WZ0DD	HLMP-EG08-X1000	HLMP-EG08-Y2000
Manufacturer	Lite-On Inc.	Everlight Electronics	Everlight Electronics	Everlight Electronics	Everlight Electronics	Everlight Electronics	Broadcom Limited	Broadcom Limited	Broadcom Limited	Broadcom Limited	Broadcom Limited
Color	Red	Red	Red	Red	Red	Red	Red	Red	Red	Red	Red
Lens Size	5mm, T-1 3/4	5.00mm Dia	5.00mm Dia	5.00mm Dia	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4
Lens Style	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top	Round with Domed Top
Lens Transparency	Clear	Clear	Clear	Clear	Clear	Clear	Clear	Clear	Clear	Clear	Clear
Voltage - Forward (Vf) Typical	1.9V	2V	2V	2V	2V	2V	1.9V	1.9V	1.9V	1.9V	1.9V
Current - Test	20mA	20mA	20mA	20mA	20mA	20mA	20mA	20mA	20mA	20mA	20mA
Millicandela Rating	2400mcd	2500mcd	4000mcd	2780mcd	6300mcd	4000mcd	8100mcd	10750mcd	10750mcd	14100mcd	18150mcd
Wavelength - Dominant	631nm	624nm	624nm	639nm	624nm	631nm	626nm	626nm	626nm	626nm	626nm
Wavelength - Peak	639nm	632nm	632nm	650nm	632nm	639nm	635nm	635nm	635nm	635nm	635nm
Viewing Angle	15°	15°	15°	6°	6°	30°	8°	8°	8°	8°	8°
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial	Radial
Height (Max)	8.70mm	8.90mm	8.90mm	8.90mm	8.90mm	8.85mm	8.91mm	8.91mm	8.91mm	8.91mm	8.91mm
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	Not specified	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	Not specified	Not specified	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

All listed substitute parts are active products with confirmed availability, addressing the obsolescence of the LTL-2H3VRKNT. Selection among substitutes depends on application-specific brightness and viewing angle requirements.

Everlight Electronics Substitutes (333-2SURC and 383-2SURC series): These parts offer ROHS3 compliance and maintain the 5mm T-1 3/4 package footprint. The 333-2SURC/H3/S400-A6 and 333-2SURC/H3/S400-A8 variants provide 2500mcd and 4000mcd respectively at 2V forward voltage. The 383-2SDRC/S530-A4 and 383-2SURC/S530-A6 offer narrower viewing angles (6°) for focused indication applications. The 7343-2USRC/S1060 provides a wider 30° viewing angle with 4000mcd brightness.

Broadcom Limited Substitutes (HLMP-EG08 series): These parts maintain the original 1.9V forward voltage specification and offer ROHS3 compliance with REACH unaffected status. The HLMP-EG08-VY000 provides 8100mcd at 8° viewing angle. The HLMP-EG08-WZ000 and HLMP-EG08-WZ0DD variants deliver 10750mcd brightness. The HLMP-EG08-X1000 and HLMP-EG08-Y2000 provide higher brightness levels at 14100mcd and 18150mcd respectively, suitable for applications requiring enhanced visibility.

All substitutes maintain electrical compatibility with existing circuit designs through matching test current (20mA) and acceptable forward voltage tolerance. Height variations (8.70mm to 8.91mm) remain within standard PCB clearance tolerances for through-hole components.

Frequently Asked Questions (FAQ)

Q: Can I directly replace the LTL-2H3VRKNT with any of these substitute parts?

A: Yes. All listed substitutes share the same 5mm T-1 3/4 through-hole radial package, clear domed lens, and 20mA test current specification. They are mechanically and electrically compatible with existing PCB designs. Forward voltage differences (1.9V vs. 2V) are within standard circuit tolerance ranges for LED indicator applications.

Q: What is the difference between the Everlight and Broadcom substitutes?

A: Broadcom substitutes maintain the original 1.9V forward voltage, while Everlight substitutes operate at 2V. Broadcom parts offer narrower viewing angles (8°) compared to most Everlight variants. Brightness levels vary across both manufacturers' product lines. Selection depends on circuit design constraints and application visibility requirements.

Q: Which substitute should I choose if brightness is critical?

A: The HLMP-EG08-Y2000 (18150mcd) and HLMP-EG08-X1000 (14100mcd) from Broadcom provide the highest brightness levels. The 383-2SURC/S530-A6 from Everlight offers 6300mcd with a narrow 6° viewing angle for focused applications. The 333-2SURC/H3/S400-A8 provides 4000mcd as a mid-range option.

Q: Are there viewing angle considerations for substitution?

A: Yes. The original LTL-2H3VRKNT has a 15° viewing angle. Substitutes range from 6° (narrow focus) to 30° (wide dispersion). For direct functional replacement in existing designs, the 333-2SURC/H3/S400-A6, 333-2SURC/H3/S400-A8, and 7343-2USRC/S1060 maintain similar or wider viewing angles. Narrower angle parts (6°) are suitable only if the application tolerates reduced light dispersion.

Q: Do all substitutes meet RoHS compliance?

A: All Broadcom HLMP-EG08 variants and most Everlight substitutes (333-2SURC and 7343-2USRC series) are ROHS3 compliant. The 383-2SDRC/S530-A4 and 383-2SURC/S530-A6 do not specify RoHS status in the provided data. Verify RoHS requirements with your procurement specifications before final selection.

Q: What is the impact of forward voltage differences on circuit design?

A: The LTL-2H3VRKNT operates at 1.9V, while most Everlight substitutes operate at 2V. This 0.1V difference is negligible in standard LED indicator circuits with current-limiting resistors. Broadcom HLMP-EG08 variants maintain the 1.9V specification for drop-in compatibility. Verify your circuit's voltage headroom if operating near supply rail limits.

Q: Are there packaging differences I should consider?

A: Most substitutes are supplied in bulk packaging. The HLMP-EG08-WZ0DD is supplied in Tape & Box (TB) format. The 333-2SURC/H3/S400-A6 and 383-2SDRC/S530-A4 are bulk packaged. Packaging format does not affect component functionality but may impact procurement and handling procedures.

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