MR3350 Yellow LED T-1 3/4 Through Hole Equivalent & Substitute Parts

Part Overview

The MR3350 is a yellow diffused LED in T-1 3/4 (5mm) through-hole package manufactured by onsemi. This component is rated for 5V forward voltage operation at 10mA test current with 4mcd luminous intensity and 60° viewing angle. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production requirements.

Key Parameters

Parameter	MR3350 Value
Manufacturer	onsemi
Color	Yellow
Lens Transparency	Diffused
Lens Size	5mm, T-1 3/4
Voltage - Forward (Vf) (Typ)	5V
Current - Test	10mA
Millicandela Rating	4mcd
Viewing Angle	60°
Mounting Type	Through Hole
Wavelength - Peak	585nm
Package / Case	Radial
Height (Max)	11.56mm
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the MR3350 is determined by the following critical parameters:

Primary Substitution Criteria:

Color: Yellow (585nm wavelength range)
Lens Transparency: Diffused
Lens Size: 5mm, T-1 3/4 package
Mounting Type: Through Hole, Radial configuration
Voltage - Forward (Vf): 5V operation
Current - Test: 10mA nominal
Viewing Angle: 60°

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

Category 1 - Direct 5V Substitutes: Parts with 5V forward voltage matching the MR3350 operating specification. These provide the closest electrical compatibility for existing circuit designs without modification.

Category 2 - Lower Voltage Alternatives: Parts with 2V, 1.8V, or 12V forward voltage. These require circuit redesign or voltage regulation adjustments but maintain the same physical package, lens characteristics, and color specification.

Parameter Comparison

Part Number	Manufacturer	Color	Vf (Typ)	Current - Test	mcd Rating	Viewing Angle	Lens Size	Height (Max)	Product Status	RoHS Status	Packaging
MR3350	onsemi	Yellow	5V	10mA	4mcd	60°	5mm, T-1 3/4	11.56mm	Obsolete	RoHS non-compliant	-
HLMP-3650	Broadcom Limited	Yellow	5V	10mA	2.2mcd	60°	5mm, T-1 3/4	9.19mm	Active	ROHS3 Compliant	Bulk
HLMP-3650-C00B2	Broadcom Limited	Yellow	5V	10mA	2.2mcd	60°	5mm	-	Active	ROHS3 Compliant	Bulk
HLMP-3401	Broadcom Limited	Yellow	2V	10mA	5.7mcd	60°	5mm, T-1 3/4	9.19mm	Active	ROHS3 Compliant	Bulk
HLMP-3401-E0002	Broadcom Limited	Yellow	2V	10mA	5.7mcd	60°	5mm, T-1 3/4	9.19mm	Active	ROHS3 Compliant	Cut Tape (CT)
HLMP-3401-E00B2	Broadcom Limited	Yellow	2V	10mA	5.7mcd	-	5mm	-	Active	ROHS3 Compliant	Bulk
HLMP-3651	Broadcom Limited	Yellow	12V	13mA	2.2mcd	60°	5mm, T-1 3/4	9.19mm	Active	ROHS3 Compliant	Bulk
HLMP-4719	Broadcom Limited	Yellow	1.8V	2mA	2.1mcd	50°	5mm, T-1 3/4	9.19mm	Active	ROHS3 Compliant	Bulk
HLMP-4719-A0002	Broadcom Limited	Yellow	1.8V	2mA	2.1mcd	50°	5mm, T-1 3/4	9.19mm	Active	ROHS3 Compliant	Cut Tape (CT)
1383UYD/S530-A3	Everlight Electronics Co Ltd	Yellow	2V	20mA	800mcd	25°	5.00mm Dia	8.90mm	Active	-	Bulk
HLMP-D401	Broadcom Limited	Orange	1.9V	10mA	5.4mcd	60°	5mm, T-1 3/4	9.19mm	Active	ROHS3 Compliant	Bulk

Engineering Selection Recommendations

Primary Recommendation - Direct 5V Substitute:

HLMP-3650 and HLMP-3650-C00B2 are the preferred direct substitutes for the MR3350. Both parts maintain 5V forward voltage operation at 10mA test current, identical viewing angle (60°), and T-1 3/4 5mm package geometry. These parts are active products with ROHS3 compliance, addressing the RoHS non-compliance status of the obsolete MR3350. The primary difference is reduced luminous intensity (2.2mcd vs. 4mcd), which is acceptable for indicator applications where the MR3350 was typically used. HLMP-3650-C00B2 is supplied in cut tape packaging for automated assembly, while HLMP-3650 is available in bulk.

Secondary Recommendations - Lower Voltage Alternatives:

HLMP-3401 and HLMP-3401-E0002 operate at 2V forward voltage and provide higher luminous intensity (5.7mcd) than the MR3350. These require circuit redesign to accommodate the lower voltage specification but offer improved brightness and active product status with ROHS3 compliance. HLMP-3401-E0002 is supplied in cut tape for automated assembly.

HLMP-4719 and HLMP-4719-A0002 operate at 1.8V with significantly reduced current requirements (2mA vs. 10mA), suitable for low-power indicator applications. These parts have narrower viewing angle (50° vs. 60°) and lower luminous intensity (2.1mcd).

Voltage-Specific Alternatives:

HLMP-3651 is available for 12V applications requiring the same physical package and yellow diffused lens characteristics.

Not Recommended:

HLMP-D401 is an orange LED (602nm wavelength) and is not suitable as a direct substitute for yellow LED applications requiring 585nm wavelength specification.

1383UYD/S530-A3 from Everlight Electronics operates at 2V with significantly higher luminous intensity (800mcd) and narrower viewing angle (25°), making it suitable only for applications requiring high brightness with restricted viewing angle.

Frequently Asked Questions (FAQ)

Q: Can HLMP-3650 directly replace MR3350 without circuit modification?

A: Yes. HLMP-3650 maintains identical 5V forward voltage and 10mA test current specifications as the MR3350. Physical package dimensions are compatible (5mm T-1 3/4 through-hole radial). The primary difference is reduced luminous intensity (2.2mcd vs. 4mcd), which is acceptable for standard indicator applications. No circuit redesign is required.

Q: What is the difference between HLMP-3650 and HLMP-3650-C00B2?

A: Both parts are electrically and mechanically identical. The difference is packaging: HLMP-3650 is supplied in bulk packaging, while HLMP-3650-C00B2 is supplied in cut tape (CT) format for automated pick-and-place assembly. Select based on assembly process requirements.

Q: Why is HLMP-3401 listed as a substitute if it operates at 2V instead of 5V?

A: HLMP-3401 maintains the same physical package (5mm T-1 3/4), lens characteristics (yellow diffused), and test current (10mA) as the MR3350. The 2V forward voltage requires circuit redesign, but the part is functionally equivalent for yellow LED indication. HLMP-3401 offers higher luminous intensity (5.7mcd) and active product status with ROHS3 compliance.

Q: What is the difference between HLMP-3401 and HLMP-3401-E0002?

A: Both parts are electrically and mechanically identical. HLMP-3401 is supplied in bulk packaging, while HLMP-3401-E0002 is supplied in cut tape (CT) format for automated assembly. Select based on assembly process requirements.

Q: Can HLMP-4719 replace MR3350 in existing designs?

A: HLMP-4719 is not recommended as a direct replacement without circuit modification. It operates at 1.8V forward voltage (vs. 5V) and requires only 2mA test current (vs. 10mA). Additionally, viewing angle is narrower (50° vs. 60°) and luminous intensity is lower (2.1mcd vs. 4mcd). Use only in applications specifically designed for low-power operation.

Q: Is HLMP-D401 a suitable substitute for MR3350?

A: No. HLMP-D401 is an orange LED (602nm wavelength) and does not meet the yellow LED (585nm) specification of the MR3350. Color mismatch makes this part unsuitable for applications requiring yellow indication.

Q: What is the RoHS compliance status of substitute parts?

A: HLMP-3650, HLMP-3401, HLMP-3651, and HLMP-4719 series parts are ROHS3 compliant, addressing the RoHS non-compliance status of the obsolete MR3350. 1383UYD/S530-A3 RoHS status is not specified in available documentation.

Q: Are there height differences between MR3350 and substitute parts?

A: Yes. MR3350 has maximum height of 11.56mm, while Broadcom HLMP series substitutes have maximum height of 9.19mm. This 2.37mm difference may affect PCB layout and mechanical clearance. Verify clearance in your specific application before substitution.

Q: Can I use 1383UYD/S530-A3 as a substitute?

A: 1383UYD/S530-A3 from Everlight Electronics maintains yellow color and 5mm round diffused lens but differs significantly in electrical specifications: 2V forward voltage, 20mA test current, and 800mcd luminous intensity with 25° viewing angle. Use only in applications specifically designed for high-brightness, narrow-angle indication.

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