MV3750 LED Red Clear T-1 3/4 Through Hole Equivalent & Substitute Parts

Part Overview

The MV3750 is a red LED indication component manufactured by onsemi, featuring a 5mm T-1 3/4 through-hole radial package with clear lens transparency. This discrete LED operates at 2.2V forward voltage with 150mcd brightness rating and 24° viewing angle, designed for standard red indication applications at 635nm peak wavelength.

The MV3750 is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Key Parameters

Parameter	MV3750 Specification
Manufacturer	onsemi
Color	Red
Lens Transparency	Clear
Lens Size	5mm, T-1 3/4
Voltage - Forward (Vf) Typical	2.2V
Current - Test	20mA
Millicandela Rating	150mcd
Viewing Angle	24°
Wavelength - Peak	635nm
Mounting Type	Through Hole
Package / Case	Radial
Height (Max)	8.89mm
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the MV3750 is determined by the following critical parameters:

Primary Compatibility Criteria:

Color: Red
Lens Transparency: Clear
Lens Size: 5mm, T-1 3/4
Mounting Type: Through Hole
Package / Case: Radial
Wavelength - Peak: 635nm region (630-645nm acceptable)

Secondary Electrical Compatibility Criteria:

Voltage - Forward (Vf): 1.7V to 2.2V range
Current - Test: 10mA to 20mA range
Viewing Angle: 22° to 30° range
Millicandela Rating: 150mcd or higher

Substitute parts meeting all primary criteria and operating within secondary electrical parameters are classified as direct equivalents. Parts with variations in brightness, viewing angle, or forward voltage within specified ranges remain functionally compatible for standard indication applications.

Parameter Comparison

Part Number	Manufacturer	Color	Lens Transparency	Lens Size	Vf (Typ)	Current - Test	mcd Rating	Viewing Angle	Peak Wavelength	Height (Max)	Product Status
MV3750	onsemi	Red	Clear	5mm, T-1 3/4	2.2V	20mA	150mcd	24°	635nm	8.89mm	Obsolete
HLMP-D105	Broadcom Limited	Red	Clear	5mm, T-1 3/4	1.8V	20mA	240mcd	24°	645nm	12.44mm	Active
HLMP-D105-M0002	Broadcom Limited	Red	Clear	5mm, T-1 3/4	1.8V	20mA	240mcd	24°	645nm	12.44mm	Active
HLMP-D155-F0002	Broadcom Limited	Red	Clear	5mm, T-1 3/4	1.7V	1mA	10mcd	24°	660nm	12.44mm	Active
LTL2P3KRK	Lite-On Inc.	Red	Clear	5mm, T-1 3/4	2V	20mA	800mcd	22°	639nm	8.70mm	Active
LTL2R3KEK	Lite-On Inc.	Red	Clear	5mm, T-1 3/4	2.05V	20mA	700mcd	30°	632nm	8.70mm	Active
LTL2R3KRK	Lite-On Inc.	Red	Clear	5mm, T-1 3/4	2V	20mA	680mcd	30°	639nm	8.70mm	Active
5219184F	Dialight	Red	Clear	5.00mm Dia	—	—	3mcd	—	—	10.95mm	Active
OVLLR8C7	TT Electronics/Optek Technology	Red	Clear	5mm, T-1 3/4	2V	20mA	900mcd	100°	—	6.80mm	Active

Engineering Selection Recommendations

Tier 1 Direct Equivalents (Recommended Primary Substitutes):

LTL2P3KRK and LTL2R3KRK (Lite-On Inc.) are the closest functional equivalents to MV3750. Both maintain clear lens transparency, 5mm T-1 3/4 through-hole radial package, forward voltage within 2V specification, 20mA test current, and peak wavelength in the 635nm region. Both parts are ROHS3 compliant and carry active product status. LTL2P3KRK provides 800mcd brightness with 22° viewing angle; LTL2R3KRK provides 680mcd with 30° viewing angle. Height specifications (8.70mm) are comparable to MV3750 (8.89mm).

LTL2R3KEK (Lite-On Inc.) offers 700mcd brightness at 2.05V forward voltage with 30° viewing angle, maintaining all primary package and optical specifications. ROHS3 compliant and active status.

Tier 2 Compatible Substitutes (Alternative Options):

HLMP-D105 and HLMP-D105-M0002 (Broadcom Limited) meet all primary compatibility criteria with clear lens, 5mm T-1 3/4 package, and 24° viewing angle matching MV3750. Forward voltage is 1.8V with 240mcd brightness. Height is 12.44mm, exceeding MV3750 by 4.65mm. ROHS3 compliant and active status. Packaging differs: HLMP-D105 in bulk; HLMP-D105-M0002 in tape & reel.

HLMP-D155-F0002 (Broadcom Limited) maintains package and optical specifications but operates at reduced current (1mA test vs. 20mA) and lower brightness (10mcd). Forward voltage is 1.7V. Suitable for low-power indication applications only. ROHS3 compliant and active status.

Not Recommended:

5219184F (Dialight) lacks critical electrical specifications (forward voltage, test current, viewing angle) necessary for direct substitution assessment.

OVLLR8C7 (TT Electronics/Optek Technology) features 100° viewing angle, significantly exceeding MV3750's 24° specification, and lacks peak wavelength data. Suitable only for wide-angle indication applications.

4302H1-12V and 4302H1-5V (Visual Communications Company - VCC) feature diffused lens transparency, incompatible with MV3750's clear lens requirement.

Frequently Asked Questions (FAQ)

Q: Can HLMP-D105 directly replace MV3750 in existing designs?

A: HLMP-D105 meets primary package and optical specifications (clear lens, 5mm T-1 3/4, 24° viewing angle, 635nm region wavelength). Forward voltage is 1.8V versus MV3750's 2.2V, requiring circuit current-limiting adjustment. Height is 12.44mm versus 8.89mm; verify PCB layout clearance. ROHS3 compliance and active status support long-term availability.

Q: What is the primary difference between LTL2P3KRK and LTL2R3KRK?

A: Both are Lite-On equivalents with identical package, voltage, and current specifications. LTL2P3KRK provides 800mcd at 22° viewing angle; LTL2R3KRK provides 680mcd at 30° viewing angle. Select based on required brightness and viewing angle for the application.

Q: Why is OVLLR8C7 not recommended as a substitute?

A: OVLLR8C7 features 100° viewing angle versus MV3750's 24°, fundamentally altering optical performance. This wide-angle characteristic is incompatible with applications requiring narrow-angle indication. Peak wavelength data is not provided, preventing complete electrical verification.

Q: Are there packaging considerations when substituting MV3750?

A: All recommended Tier 1 and Tier 2 substitutes use through-hole radial packages compatible with MV3750 PCB footprints. Height variations exist: LTL2P3KRK and LTL2R3KRK at 8.70mm (comparable to MV3750's 8.89mm); HLMP-D105 series at 12.44mm (4.65mm taller). Verify clearance in confined spaces. Packaging format differs: bulk versus tape & reel options available.

Q: What compliance certifications apply to substitute parts?

A: Recommended Tier 1 substitutes (Lite-On LTL series) are ROHS3 compliant with MSL 1 (Unlimited). HLMP-D105 series (Broadcom) are ROHS3 compliant with MSL 1 (Unlimited). All carry REACH Unaffected or REACH Affected status as specified. ECCN classification is EAR99 for all parts. Verify specific compliance requirements for your application and region.

Q: Can MV3750 be substituted in low-current applications?

A: HLMP-D155-F0002 operates at 1mA test current versus MV3750's 20mA, suitable for ultra-low-power indication. However, brightness is reduced to 10mcd. This substitution is application-specific and requires verification that reduced brightness meets visibility requirements.

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