MV33509MP8B LED Circuit Board Indicator Equivalent & Substitute Parts

Part Overview

The MV33509MP8B is a quad yellow LED circuit board indicator manufactured by onsemi, featuring four 5mm T-1 3/4 through-hole right-angle mounted LEDs. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates at 2.2V with 20mA current rating and delivers 150mcd brightness across all four LED elements.

Key Parameters

Parameter	MV33509MP8B
Manufacturer	onsemi
Configuration	4 Wide (Quad)
Color	Yellow (x 4)
Lens Size	5mm, T-1 3/4
Lens Style	Round with Domed Top
Lens Type	Tinted
Voltage Rating	2.2V
Current	20mA
Millicandela Rating	150mcd
Wavelength - Peak	585nm
Mounting Type	Through Hole, Right Angle
Product Status	Obsolete
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution for the MV33509MP8B is determined by the following critical parameters:

Configuration Match: The primary substitute must maintain quad (4-wide) configuration with right-angle through-hole mounting to ensure direct PCB layout compatibility.

Electrical Compatibility: Forward voltage (2.1V–2.2V range), current rating (20mA), and wavelength (585nm ±5nm) must align to preserve circuit operation and visual consistency.

Mechanical Compatibility: Lens size (5mm T-1 3/4), mounting type (through-hole right-angle), and physical dimensions must match to ensure mechanical fit without PCB redesign.

Compliance & Status: All substitutes must maintain ROHS3 compliance and MSL 1 rating to meet regulatory and environmental requirements.

Based on these criteria, the following substitute is identified:

Direct Quad Configuration Substitute:

SSF-LXH400YD (Lumex Opto/Components Inc.) – Maintains identical quad yellow LED configuration with right-angle through-hole mounting, 2.1V operation, and 20mA current rating.

Single LED Alternatives (for component-level substitution if quad assembly is not required):

151051YS04000 (Würth Elektronik)
4308H7 (Visual Communications Company - VCC)
OVLLY8C7 (TT Electronics/Optek Technology)
WP1503YC (Kingbright)
SSL-LX5063YC (Lumex Opto/Components Inc.)
SSL-LX5093YC (Lumex Opto/Components Inc.)

Parameter Comparison

Part Number	Manufacturer	Configuration	Color	Voltage (Vf)	Current	Millicandela	Wavelength Peak	Lens Size	Mounting Type	Product Status
MV33509MP8B	onsemi	4 Wide	Yellow (x 4)	2.2V	20mA	150mcd	585nm	5mm, T-1 3/4	Through Hole, Right Angle	Obsolete
SSF-LXH400YD	Lumex Opto/Components Inc.	4 Wide	Yellow (x 4)	2.1V	20mA	—	585nm	5mm, T-1 3/4	Through Hole, Right Angle	Active
151051YS04000	Würth Elektronik	Standard	Yellow	2V	20mA	450mcd	592nm	4.90mm Dia	Through Hole	Active
4308H7	Visual Communications Company - VCC	Standard	Yellow	2.2V	20mA	140mcd	583nm	5mm, T-1 3/4	Through Hole	Active
OVLLY8C7	TT Electronics/Optek Technology	Standard	Yellow	2V	20mA	980mcd	589nm	5mm, T-1 3/4	Through Hole	Active
WP1503YC	Kingbright	Standard	Yellow	2.1V	20mA	50mcd	590nm	5mm, T-1 3/4	Through Hole	Active
SSL-LX5063YC	Lumex Opto/Components Inc.	Standard	Yellow	2.1V	20mA	40mcd	585nm	5mm, T-1 3/4	Through Hole	Active
SSL-LX5093YC	Lumex Opto/Components Inc.	Standard	Yellow	2.1V	20mA	40mcd	585nm	5mm, T-1 3/4	Through Hole	Active
LTL2R3KFK	Lite-On Inc.	Standard	Orange	2.05V	20mA	700mcd	611nm	5mm, T-1 3/4	Through Hole	Active
5219321F	Dialight	Standard	Yellow	1.9V	2mA	1.8mcd	583nm	4.83mm Dia	Through Hole	Active
5219284F	Dialight	Standard	Yellow	10V	10mA	8mcd	583nm	4.83mm Dia	Through Hole	Active

Engineering Selection Recommendations

Primary Substitute (Direct Replacement): SSF-LXH400YD is the recommended direct substitute. It maintains quad configuration with right-angle through-hole mounting, operates at 2.1V with 20mA current, and matches the 585nm wavelength specification. The part is active in production status and ROHS3 compliant, ensuring long-term availability and regulatory compliance.

Secondary Substitutes (Single LED Components): For applications where individual LED replacement or component-level substitution is acceptable, the following parts are compatible based on electrical and mechanical parameters:

4308H7 (VCC): Matches 2.2V forward voltage and 20mA current with 5mm T-1 3/4 form factor. Wavelength 583nm is within acceptable tolerance.
OVLLY8C7 (TT Electronics/Optek Technology): Operates at 2V with 20mA current and 5mm T-1 3/4 mounting. Wavelength 589nm is within acceptable tolerance.
WP1503YC (Kingbright): Operates at 2.1V with 20mA current and 5mm T-1 3/4 form factor. Wavelength 590nm is within acceptable tolerance.
SSL-LX5063YC and SSL-LX5093YC (Lumex): Both operate at 2.1V with 20mA current, 5mm T-1 3/4 mounting, and 585nm wavelength matching.

Not Recommended:

LTL2R3KFK: Orange color (605nm/611nm wavelength) does not match yellow specification.
5219321F and 5219284F: Electrical parameters (1.9V/2mA and 10V/10mA respectively) deviate significantly from the 2.2V/20mA requirement.
151051YS04000: While yellow, the 4.90mm lens diameter and radial mounting differ from the 5mm T-1 3/4 right-angle specification.

All recommended substitutes maintain ROHS3 compliance and MSL 1 rating.

Frequently Asked Questions (FAQ)

Q: Can SSF-LXH400YD be used as a direct replacement for MV33509MP8B without PCB modification? A: Yes. SSF-LXH400YD maintains identical quad configuration, right-angle through-hole mounting, 5mm T-1 3/4 form factor, and electrical parameters (2.1V, 20mA). No PCB redesign is required.

Q: What is the voltage tolerance for substitution? A: Forward voltage must remain within the 2.0V to 2.2V range to ensure proper circuit operation. SSF-LXH400YD at 2.1V and 4308H7 at 2.2V are within this tolerance. Parts operating at 1.9V or 10V are not acceptable substitutes.

Q: Why is LTL2R3KFK listed as a substitute if it is orange? A: LTL2R3KFK is listed in the original substitute data but is not recommended for this application due to color mismatch (orange vs. yellow). It does not meet the visual specification requirement.

Q: Can single yellow LEDs replace the quad assembly? A: Single LED substitutes (4308H7, OVLLY8C7, WP1503YC, SSL-LX5063YC, SSL-LX5093YC) are electrically compatible but require PCB redesign to accommodate individual component placement instead of the quad right-angle assembly. This approach is suitable only if the PCB layout can be modified.

Q: What is the significance of the 585nm wavelength specification? A: The 585nm peak wavelength defines the yellow color perception. Acceptable substitutes must operate within 583nm to 592nm to maintain consistent visual appearance. Parts outside this range (such as 605nm/611nm orange LEDs) will appear visually different.

Q: Are all recommended substitutes ROHS3 compliant? A: Yes. SSF-LXH400YD and all secondary substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) rating, meeting regulatory and environmental requirements.

Q: What is the current rating tolerance for substitution? A: The 20mA test current is standard for this LED category. Substitutes must operate at 20mA. Parts rated at 2mA or 10mA (such as 5219321F and 5219284F) are not acceptable as they operate outside the specified current range.

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