LTL-2R3VFKNT Equivalent & Substitute Parts

Part Overview

The LTL-2R3VFKNT is an orange 605nm LED indicator manufactured by Lite-On Inc., configured as a T-1 3/4 through-hole radial component with 1300mcd brightness. This part is classified as obsolete, making substitute components necessary for new designs and ongoing production requirements. Equivalent parts must maintain compatibility across electrical characteristics, mechanical form factor, and optical specifications to ensure direct circuit board integration without redesign.

Key Parameters

Parameter	LTL-2R3VFKNT
Color	Orange
Wavelength - Dominant	605nm
Wavelength - Peak	611nm
Voltage - Forward (Vf) Typical	2V
Current - Test	20mA
Millicandela Rating	1300mcd
Lens Size	5mm, T-1 3/4
Lens Style	Round with Domed Top
Lens Transparency	Clear
Viewing Angle	30°
Mounting Type	Through Hole
Package / Case	Radial
Height (Max)	8.70mm
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts are grouped into two categories based on electrical and optical compatibility with the LTL-2R3VFKNT:

Category 1: Direct Orange LED Substitutes (605nm Wavelength) These parts maintain the same color, dominant wavelength, and viewing angle as the original component. Substitution is based on matching: color (orange), wavelength range (605nm dominant), forward voltage (1.98V–2V range), test current (20mA), lens size (T-1 3/4), lens style (round domed), and through-hole radial mounting. Parts in this category are electrically and optically interchangeable.

Category 2: Alternative Color LED Substitutes (Yellow, 589nm Wavelength) These parts differ in color and wavelength but share the same mechanical form factor, mounting type, and electrical test parameters. Substitution in this category requires circuit design consideration due to color change and wavelength shift. These parts are mechanically compatible but represent a functional change in circuit operation.

Parameter Comparison

Part Number	Manufacturer	Color	Wavelength - Dominant (nm)	Vf Typical (V)	Millicandela (mcd)	Viewing Angle (°)	Lens Size	Height Max (mm)	Product Status	RoHS Status
LTL-2R3VFKNT	Lite-On Inc.	Orange	605	2.0	1300	30	5mm, T-1 3/4	8.70	Obsolete	—
HLMP-EJ30-NR0DD	Broadcom Limited	Orange	605	1.98	1290	30	5mm, T-1 3/4	8.91	Active	ROHS3 Compliant
HLMP-EJ08-WZ000	Broadcom Limited	Orange	605	1.98	10750	8	5mm, T-1 3/4	8.91	Active	ROHS3 Compliant
HLMP-EJ30-NR000	Broadcom Limited	Orange	605	1.98	1290	30	5mm, T-1 3/4	8.91	Active	ROHS3 Compliant
383-2UYC/S530-A3	Everlight Electronics Co Ltd	Yellow	589	2.0	4263	6	5.00mm Dia	8.90	Active	ROHS3 Compliant
MV8303	onsemi	Yellow	—	2.1	940	20	5mm, T-1 3/4	8.89	Obsolete	—
MV8305	Fairchild Semiconductor	Yellow	—	2.1	2400	20	5mm, T-1 3/4	—	Active	ROHS3 Compliant
MV8332	onsemi	Yellow	—	2.1	940	30	5mm, T-1 3/4	8.89	Obsolete	—
MV8333	onsemi	Yellow	—	2.1	1500	30	5mm, T-1 3/4	8.89	Obsolete	—
MV8342	onsemi	Yellow	—	2.1	940	45	5mm, T-1 3/4	8.89	Obsolete	—
OVLFY3C7	TT Electronics/Optek Technology	Yellow	589	2.0	7400	30	5mm, T-1 3/4	8.70	Active	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Orange LED Replacement (Recommended Primary Path)

HLMP-EJ30-NR0DD and HLMP-EJ30-NR000 (Broadcom Limited) are the primary substitutes for LTL-2R3VFKNT. Both parts are active products with ROHS3 compliance and REACH unaffected status. These components match the original part across color (orange), dominant wavelength (605nm), forward voltage (1.98V, within 1% of 2V specification), test current (20mA), viewing angle (30°), lens size (T-1 3/4), and mounting configuration (through-hole radial). Height variance (8.91mm vs. 8.70mm) is within acceptable PCB layout tolerance. The primary difference between HLMP-EJ30-NR0DD and HLMP-EJ30-NR000 is packaging format (cut tape vs. bulk).

HLMP-EJ08-WZ000 (Broadcom Limited) is an active orange LED substitute with identical wavelength and voltage characteristics but differs in brightness (10750mcd vs. 1300mcd) and viewing angle (8° vs. 30°). This part is suitable only when higher brightness and narrower viewing angle are circuit requirements.

For Alternative Color Substitution (Yellow LED)

OVLFY3C7 (TT Electronics/Optek Technology) is an active yellow LED with matching forward voltage (2V), viewing angle (30°), and height (8.70mm). This part maintains mechanical and electrical compatibility but introduces a wavelength shift to 589nm and increased brightness (7400mcd). Selection requires circuit design verification for color change acceptance.

MV8305 (Fairchild Semiconductor) is an active yellow LED with 2.1V forward voltage and 2400mcd brightness. This part is suitable for applications where yellow indication is acceptable and higher brightness than MV8303/MV8332/MV8333 is required.

Obsolete yellow LED parts (MV8303, MV8332, MV8333, MV8342) are not recommended for new designs due to product status discontinuation.

Frequently Asked Questions (FAQ)

Q: Can HLMP-EJ30-NR0DD directly replace LTL-2R3VFKNT without circuit modification?

A: Yes. HLMP-EJ30-NR0DD maintains electrical compatibility (1.98V forward voltage vs. 2V specification, within tolerance), optical compatibility (605nm dominant wavelength, 30° viewing angle), and mechanical compatibility (T-1 3/4 through-hole radial package). No circuit redesign is required.

Q: What is the difference between HLMP-EJ30-NR0DD and HLMP-EJ30-NR000?

A: Both parts are electrically and optically identical. The difference is packaging format: HLMP-EJ30-NR0DD is supplied in cut tape (CT), while HLMP-EJ30-NR000 is supplied in bulk. Selection depends on procurement and assembly requirements.

Q: Why is HLMP-EJ08-WZ000 listed as a substitute if it has different brightness and viewing angle?

A: HLMP-EJ08-WZ000 shares the same color, wavelength, voltage, and mechanical form factor as LTL-2R3VFKNT. However, its 10750mcd brightness and 8° viewing angle represent a functional change. This part is suitable only when circuit design specifically requires higher brightness and narrower beam concentration.

Q: Can yellow LED parts (OVLFY3C7, MV8305) replace the orange LTL-2R3VFKNT?

A: Yellow LEDs are mechanically and electrically compatible but represent a functional change due to color and wavelength shift (589nm vs. 605nm). Substitution is possible only if circuit design and application requirements accept yellow indication instead of orange. This typically requires design review and approval.

Q: What is the significance of RoHS3 compliance and REACH status?

A: RoHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements for lead-free and restricted substance content. REACH unaffected status indicates the part is not subject to REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) restrictions. Active substitute parts (HLMP-EJ30-NR0DD, HLMP-EJ30-NR000, HLMP-EJ08-WZ000, OVLFY3C7, MV8305) carry these certifications, making them suitable for regulated applications.

Q: Why are obsolete yellow LED parts (MV8303, MV8332, MV8333, MV8342) included if they are not recommended?

A: These parts are listed because they appear in the original LTL-2R3VFKNT substitute cross-reference data. However, their obsolete product status makes them unsuitable for new designs. Active alternatives (OVLFY3C7, MV8305) should be used instead.

Q: What PCB layout considerations apply when substituting LTL-2R3VFKNT with HLMP-EJ30-NR0DD?

A: Height difference (8.91mm vs. 8.70mm) is 0.21mm and falls within standard PCB component tolerance. No layout modification is required. Both parts use identical T-1 3/4 through-hole radial package configuration with matching lead spacing.

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