MV3450 Equivalent & Substitute Parts

Part Overview

The MV3450 is a green LED indicator from onsemi, featuring a 5mm T-1 3/4 through-hole radial package with clear lens transparency and 150mcd brightness rating. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. The MV3450 operates at 2.2V forward voltage with 20mA test current and provides a 24° viewing angle, suitable for discrete LED indication applications requiring moderate brightness and narrow viewing characteristics.

Key Parameters

Parameter	Value
Manufacturer Part Number	MV3450
Manufacturer	onsemi
Product Status	Obsolete
Color	Green
Lens Transparency	Clear
Lens Size	5mm, T-1 3/4
Voltage - Forward (Vf) (Typ)	2.2V
Current - Test	20mA
Millicandela Rating	150mcd
Viewing Angle	24°
Wavelength - Peak	565nm
Mounting Type	Through Hole
Package / Case	Radial
Height (Max)	8.89mm
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MV3450 is determined by the following critical parameters:

Package Type: All substitutes must use T-1 3/4 through-hole radial configuration to ensure mechanical and electrical compatibility with existing PCB layouts
Color & Wavelength: Green color with peak wavelength in the 565-575nm range maintains optical consistency
Lens Transparency: Clear lens transparency is required to match the optical characteristics of the original part
Forward Voltage: Acceptable range is 2.1V to 2.2V to ensure compatibility with existing circuit designs
Mounting Type: Through-hole radial mounting is mandatory for direct replacement
Brightness Range: Millicandela ratings between 40mcd and 980mcd are acceptable depending on application requirements

Substitute parts are grouped into two categories based on these parameters: direct electrical equivalents with similar brightness characteristics, and functional alternatives with different brightness levels that maintain electrical compatibility.

Parameter Comparison

Part Number	Manufacturer	Product Status	Color	Lens Transparency	Vf (Typ)	Current - Test	Millicandela Rating	Viewing Angle	Wavelength - Peak	Height (Max)	RoHS Status
MV3450	onsemi	Obsolete	Green	Clear	2.2V	20mA	150mcd	24°	565nm	8.89mm	Not Specified
5GC	Bivar Inc.	Active	Green	Clear	2.1V	20mA	40mcd	35°	568nm	8.50mm	ROHS3 Compliant
HLMP-3519	Broadcom Limited	Active	Green	Clear	2.1V	10mA	70mcd	24°	565nm	9.19mm	ROHS3 Compliant
LTL-4238	Lite-On Inc.	Active	Green	Clear	2.1V	10mA	90mcd	16°	565nm	8.60mm	ROHS3 Compliant
LTL2P3KGKNN	Lite-On Inc.	Active	Green	Clear	2.1V	20mA	980mcd	22°	575nm	8.70mm	ROHS3 Compliant
LTL2R3KGKNN	Lite-On Inc.	Active	Green	Clear	2.1V	20mA	680mcd	30°	575nm	8.70mm	ROHS3 Compliant
HLMP-3507	Broadcom Limited	Active	Green	Diffused	2.1V	10mA	4.2mcd	60°	565nm	9.19mm	ROHS3 Compliant
5219201F	Dialight	Active	Green	Not Specified	2.1V	Not Specified	60mcd	Not Specified	565nm	Not Specified	ROHS3 Compliant

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility)

LTL2R3KGKNN and LTL2P3KGKNN from Lite-On Inc. are the preferred substitutes for the MV3450. Both parts maintain the critical electrical parameters (2.1V forward voltage, 20mA test current) and clear lens transparency required for direct replacement. These parts are active products with ROHS3 compliance and provide brightness ratings (680mcd and 980mcd respectively) that exceed the original 150mcd specification, ensuring adequate illumination in existing designs. The slightly higher forward voltage (2.1V vs 2.2V) is within acceptable tolerance for LED indicator circuits.

Secondary Substitutes (Functional Equivalents)

HLMP-3519 from Broadcom Limited offers electrical compatibility with matching 24° viewing angle and 565nm peak wavelength. At 70mcd brightness with 10mA test current, this part provides reduced power consumption while maintaining the narrow viewing angle characteristic of the MV3450. ROHS3 compliance and active product status support long-term availability.

LTL-4238 from Lite-On Inc. provides 90mcd brightness with 10mA test current and ROHS3 compliance. The 16° viewing angle is narrower than the original specification, suitable for applications requiring more focused illumination.

5GC from Bivar Inc. is an active product with ROHS3 compliance offering 40mcd brightness and 35° viewing angle, providing wider light distribution than the original part.

Not Recommended for Direct Replacement

HLMP-3507 features diffused lens transparency, which differs from the clear lens of the MV3450 and produces significantly different optical characteristics (4.2mcd vs 150mcd). This part is suitable only for applications where diffused illumination is acceptable.

4302H5-5V and 4302H5-12V from Visual Communications Company operate at 5V and 12V respectively, making them incompatible with circuits designed for the 2.2V MV3450.

5219201 and 5219201F from Dialight lack sufficient parameter specification for direct electrical comparison.

Frequently Asked Questions (FAQ)

Q: Can I use LTL2P3KGKNN or LTL2R3KGKNN as direct replacements for MV3450?

A: Yes. Both parts meet the critical substitution criteria: T-1 3/4 through-hole radial package, green color with clear lens transparency, 2.1V forward voltage (within tolerance of 2.2V), 20mA test current, and 565-575nm peak wavelength. The higher brightness ratings (980mcd and 680mcd) are acceptable for applications originally designed for 150mcd, as they provide enhanced illumination without circuit modification.

Q: What is the difference between clear and diffused lens transparency?

A: Clear lens transparency produces a focused, directional light beam with narrow viewing angle and higher brightness concentration. Diffused lens transparency scatters light over a wider viewing angle with lower peak brightness. The MV3450 uses clear transparency; substitutes must maintain this characteristic unless the application specifically requires diffused illumination.

Q: Are there any compliance concerns with substitute parts?

A: All recommended active substitute parts carry ROHS3 compliance certification, meeting current environmental and hazardous substance restrictions. The MV3450 is classified as obsolete and does not carry ROHS3 certification. Substitution with ROHS3-compliant parts ensures compliance with modern manufacturing and environmental standards.

Q: How does forward voltage tolerance affect circuit design?

A: The MV3450 operates at 2.2V; recommended substitutes operate at 2.1V. This 0.1V difference is within standard LED tolerance and does not require circuit redesign. Existing current-limiting resistor values will function correctly with substitute parts. Verify that your circuit design includes appropriate current-limiting resistors for the 20mA test current specification.

Q: Can I use parts with different brightness ratings?

A: Yes, within application requirements. Substitute parts with higher brightness (LTL2R3KGKNN at 680mcd, LTL2P3KGKNN at 980mcd) provide enhanced visibility without circuit modification. Parts with lower brightness (HLMP-3519 at 70mcd, LTL-4238 at 90mcd) reduce power consumption and may require verification that illumination remains adequate for your application.

Q: What viewing angle considerations apply to substitution?

A: The MV3450 specifies 24° viewing angle. Substitute parts range from 16° (LTL-4238, narrower focus) to 60° (HLMP-3507, wider distribution). For applications requiring specific viewing angle characteristics, select substitutes with matching or compatible specifications. Narrower angles concentrate brightness; wider angles distribute light over larger areas.

Q: Are all substitute parts available in the same package configuration?

A: Yes. All recommended substitute parts use T-1 3/4 through-hole radial packages, ensuring mechanical compatibility with existing PCB layouts. Physical dimensions vary slightly (height range 8.50mm to 9.19mm), but these variations are within standard PCB design tolerances for through-hole components.

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