MR5761 LED Red Diffused T-1 T/H Equivalent & Substitute Parts

Part Overview

The MR5761 is a red diffused LED indicator from onsemi, configured as a through-hole radial component in T-1 package format. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The MR5761 operates at 12V forward voltage with a test current of 13mA, delivering 4mcd luminous intensity with a 60° viewing angle and 635nm peak wavelength. Due to its obsolete status, active alternative components are available from multiple manufacturers that maintain compatibility within the red LED indication category.

Key Parameters

Parameter	MR5761 Value
Manufacturer	onsemi
Color	Red
Lens Transparency	Diffused
Lens Style	Round with Domed Top
Lens Size	3mm, T-1
Voltage - Forward (Vf) (Typ)	12V
Current - Test	13mA
Millicandela Rating	4mcd
Viewing Angle	60°
Mounting Type	Through Hole
Package / Case	Radial
Supplier Device Package	T-1
Height (Max)	6.30mm
Wavelength - Peak	635nm
Product Status	Obsolete
RoHS Status	RoHS non-compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the MR5761 is determined by the following critical parameters:

Lens Size and Package Format: T-1 3mm through-hole radial configuration
Color and Lens Transparency: Red diffused lens
Lens Style: Round with domed top
Mounting Type: Through hole radial
Wavelength Range: Peak wavelength in the 625–650nm red spectrum
Electrical Compatibility: Forward voltage and test current ratings

Substitute parts are grouped into two categories based on forward voltage alignment:

Category 1 – High Voltage (12V) Substitutes: Parts operating at 12V forward voltage, directly compatible with the MR5761 circuit design without modification.

Category 2 – Low Voltage (1.7V–2.2V) Substitutes: Parts operating at significantly lower forward voltages. These require circuit redesign, including resistor recalculation and power supply adjustment. Selection depends on application requirements and design flexibility.

Parameter Comparison

Part Number	Manufacturer	Vf (Typ)	Current - Test	mcd	Viewing Angle	Wavelength - Peak	Height (Max)	Product Status	RoHS Status
MR5761	onsemi	12V	13mA	4mcd	60°	635nm	6.30mm	Obsolete	RoHS non-compliant
HLMP-1601	Broadcom Limited	12V	13mA	2.1mcd	60°	635nm	6.35mm	Active	ROHS3 Compliant
HLMP-1600	Broadcom Limited	5V	10mA	2.1mcd	60°	635nm	6.35mm	Active	ROHS3 Compliant
HLMP-1301-G00FG	Broadcom Limited	1.9V	10mA	8.6mcd	60°	635nm	6.35mm	Active	ROHS3 Compliant
HLMP-1700	Broadcom Limited	1.7V	2mA	2.1mcd	50°	635nm	6.35mm	Active	ROHS3 Compliant
3HD-F	Bivar Inc.	2V	20mA	30mcd	35°	625nm	5.30mm	Active	ROHS3 Compliant
4300F1LC	Visual Communications Company - VCC	1.8V	2mA	1.8mcd	50°	635nm	6.35mm	Not For New Designs	ROHS3 Compliant
151031SS06000	Würth Elektronik	2.2V	20mA	35mcd	60°	650nm	5.55mm	Active	ROHS3 Compliant
1254-10SURD/S530-A3	Everlight Electronics Co Ltd	2V	20mA	400mcd	30°	632nm	5.30mm	Active	Not specified

Engineering Selection Recommendations

Direct 12V Replacement (No Circuit Modification Required)

HLMP-1601 from Broadcom Limited is the primary direct substitute for the MR5761. Both components operate at 12V forward voltage with 13mA test current, 60° viewing angle, and 635nm peak wavelength. The HLMP-1601 is active in production status and ROHS3 compliant, addressing the obsolescence and compliance limitations of the MR5761. Height difference is negligible (6.35mm vs. 6.30mm). Luminous intensity is lower (2.1mcd vs. 4mcd), which is acceptable for indicator applications where brightness is not critical.

Alternative 12V Option

HLMP-1600-D00A1 and HLMP-1600-D00A2 are right-angle mounted variants of the HLMP-1600 series, both operating at 5V. These require circuit redesign and are suitable only if mechanical constraints necessitate right-angle mounting.

Low-Voltage Alternatives (Circuit Redesign Required)

For applications where forward voltage reduction is acceptable:

HLMP-1301-G00FG (Broadcom): 1.9V, 10mA, 8.6mcd, 60° viewing angle. Active status, ROHS3 compliant. Higher luminous intensity compensates for lower voltage operation.
HLMP-1700 (Broadcom): 1.7V, 2mA, 2.1mcd, 50° viewing angle. Active status, ROHS3 compliant. Lowest power consumption option.
3HD-F (Bivar): 2V, 20mA, 30mcd, 35° viewing angle. Active status, ROHS3 compliant. Highest luminous intensity but narrower viewing angle.
151031SS06000 (Würth Elektronik): 2.2V, 20mA, 35mcd, 60° viewing angle. Active status, ROHS3 compliant. Maintains 60° viewing angle with higher brightness.
1254-10SURD/S530-A3 (Everlight): 2V, 20mA, 400mcd, 30° viewing angle. Active status. Extremely high luminous intensity but very narrow viewing angle; suitable only for focused indicator applications.

Not Recommended for New Designs

4300F1LC (Visual Communications Company - VCC) carries "Not For New Designs" status and should be avoided for new development projects.

Frequently Asked Questions (FAQ)

Q: Can I use HLMP-1601 as a direct replacement for MR5761 without any circuit changes?

A: Yes. HLMP-1601 operates at the same 12V forward voltage and 13mA test current as the MR5761. No resistor recalculation or power supply modification is required. The components are mechanically and electrically compatible within through-hole radial T-1 package format.

Q: What is the main difference between HLMP-1601 and HLMP-1600?

A: HLMP-1601 operates at 12V forward voltage, while HLMP-1600 operates at 5V. HLMP-1601 is the appropriate choice for direct MR5761 replacement. HLMP-1600 requires circuit redesign including resistor adjustment for 5V operation.

Q: Why do some substitutes have significantly different luminous intensity (mcd) ratings?

A: Luminous intensity varies based on LED chip design, lens optical properties, and forward voltage. For indicator applications, brightness differences are often acceptable. Verify that the selected substitute meets the minimum brightness requirement for your specific application.

Q: Can I use low-voltage substitutes (1.7V–2.2V) in a 12V circuit designed for MR5761?

A: No. Low-voltage substitutes require circuit redesign. Direct substitution would result in excessive current and component failure. Resistor values must be recalculated based on the new forward voltage to maintain safe operating current.

Q: What is the significance of the 60° viewing angle specification?

A: Viewing angle defines the cone of light emission. MR5761 and most recommended substitutes maintain 60° viewing angle, ensuring consistent light distribution in the application. Substitutes with narrower viewing angles (30°–35°) concentrate light in a tighter cone and are suitable only for focused indicator applications.

Q: Are all recommended substitutes RoHS compliant?

A: All active substitutes listed are ROHS3 compliant. The original MR5761 is RoHS non-compliant. If RoHS compliance is a requirement, any of the active substitutes satisfy this criterion.

Q: What is the difference between T-1 and 3mm package designations?

A: T-1 and 3mm refer to the same through-hole LED package format. T-1 is the traditional designation; 3mm indicates the lens diameter. These terms are interchangeable for this product category.

Q: Can I use HLMP-1600-D00A1 or HLMP-1600-D00A2 as substitutes?

A: These are right-angle mounted variants requiring different PCB footprints and circuit design. They are suitable only if your application requires right-angle mounting and you can accommodate the 5V forward voltage requirement with circuit redesign.

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