MR37519MP5 LED Circuit Board Indicator - Equivalent & Substitute Parts

Part Overview

The MR37519MP5 is a 5mm red diffused LED circuit board indicator manufactured by onsemi, rated for 12V operation at 13mA with a 4mcd brightness rating. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

The MR37519MP5 features a through-hole T-1 3/4 form factor with a round domed top lens. Its obsolete status requires identification of active equivalent components that maintain functional compatibility within the specified electrical and mechanical parameters.

Key Parameters

Parameter	MR37519MP5 Value
Color	Red
Lens Type	Diffused, Tinted
Lens Style	Round with Domed Top
Lens Size	5mm, T-1 3/4
Voltage Rating	12V
Current	13mA
Millicandela Rating	4mcd
Mounting Type	Through Hole
Configuration	Single
Product Status	Obsolete
RoHS Status	RoHS non-compliant

Substitute Part Grouping Explanation

Substitution of the MR37519MP5 is determined by the following critical parameters:

Color: Red (all substitutes must be red)
Lens Configuration: Diffused, tinted lens with round domed top
Form Factor: 5mm T-1 3/4 through-hole package
Mounting Type: Through hole, radial leads
Electrical Compatibility: Forward voltage and test current ratings

The substitute parts listed below are grouped by their electrical characteristics and product status. The MR37519MP5 operates at 12V with 13mA current. Substitute parts operate at lower forward voltages (1.9V to 5V) and lower test currents (10mA), requiring circuit design adjustment through series resistor modification to maintain equivalent brightness and operational reliability.

All substitute parts maintain the same physical form factor (5mm T-1 3/4), lens type (diffused red), and through-hole mounting configuration, ensuring mechanical compatibility with existing PCB layouts.

Parameter Comparison

Part Number	Manufacturer	Color	Lens Type	Lens Size	Voltage (Vf)	Current (Test)	Millicandela	Mounting	Product Status	RoHS Status
MR37519MP5	onsemi	Red	Diffused, Tinted	5mm, T-1 3/4	12V	13mA	4mcd	Through Hole	Obsolete	RoHS non-compliant
5219240F	Dialight	Red	Diffused	5.00mm	—	10mA	6.3mcd	Through Hole	Active	ROHS3 Compliant
HLMP-3301	Broadcom Limited	Red	Diffused	5mm, T-1 3/4	1.9V	10mA	5.4mcd	Through Hole	Active	ROHS3 Compliant
HLMP-3301-D0000	Broadcom Limited	Red	Diffused	5mm, T-1 3/4	1.9V	10mA	2.1mcd	Through Hole	Active	ROHS3 Compliant
HLMP-3301-D0001	Broadcom Limited	Red	Diffused	5mm, T-1 3/4	1.9V	10mA	2.1mcd	Through Hole	Active	ROHS3 Compliant
HLMP-3301-D0002	Broadcom Limited	Red	Diffused	5mm, T-1 3/4	1.9V	10mA	2.1mcd	Through Hole	Active	ROHS3 Compliant
HLMP-3301-D00B2	Broadcom Limited	Red	Diffused, Tinted	—	1.9V	10mA	2.1mcd	Through Hole, Right Angle	Active	ROHS3 Compliant
HLMP-3301-F0002	Broadcom Limited	Red	Diffused	5mm, T-1 3/4	1.9V	10mA	5.4mcd	Through Hole	Active	ROHS3 Compliant
HLMP-3301-F00B2	Broadcom Limited	Red	Diffused, Tinted	—	1.9V	10mA	5.4mcd	Through Hole, Right Angle	Active	ROHS3 Compliant
HLMP-3301-F00DD	Broadcom Limited	Red	Diffused	5mm, T-1 3/4	1.9V	10mA	5.4mcd	Through Hole	Active	ROHS3 Compliant
HLMP-3600	Broadcom Limited	Red	Diffused	5mm, T-1 3/4	5V	10mA	2.1mcd	Through Hole	Active	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are active products with ROHS3 compliance, addressing the obsolete status and RoHS non-compliance of the MR37519MP5.

For direct mechanical and optical compatibility, select from the following:

HLMP-3301-F00DD (Broadcom): 5mm T-1 3/4 form factor, 5.4mcd brightness, 1.9V forward voltage, cut tape packaging, highest inventory availability (43,381 pcs)
HLMP-3301-F0002 (Broadcom): Identical specifications to HLMP-3301-F00DD, cut tape packaging, 6,700 pcs available
HLMP-3301 (Broadcom): 5.4mcd brightness, 1.9V forward voltage, bulk packaging, 28,097 pcs available
5219240F (Dialight): 5mm form factor, 6.3mcd brightness, 10mA test current, bulk packaging, 2,526 pcs available

For right-angle mounting applications, select:

HLMP-3301-F00B2 (Broadcom): Right-angle configuration, 5.4mcd brightness, 1.9V forward voltage, bulk packaging
HLMP-3301-D00B2 (Broadcom): Right-angle configuration, 2.1mcd brightness, 1.9V forward voltage, bulk packaging

For lower brightness requirements, select:

HLMP-3301-D0002 (Broadcom): 2.1mcd brightness, 1.9V forward voltage, cut tape packaging, 6,900 pcs available
HLMP-3600 (Broadcom): 2.1mcd brightness, 5V forward voltage, bulk packaging, 18,907 pcs available

Circuit design modification is required for all substitutes due to lower forward voltage ratings. The MR37519MP5 operates at 12V; substitute parts operate at 1.9V or 5V, necessitating series resistor recalculation to maintain equivalent current and brightness levels.

Frequently Asked Questions (FAQ)

Q: Can HLMP-3301 series parts directly replace MR37519MP5 without circuit modification?

A: No. The MR37519MP5 is rated for 12V operation, while HLMP-3301 series parts are rated for 1.9V forward voltage. Direct substitution requires recalculation of the series resistor to maintain the desired operating current and brightness. The mechanical form factor (5mm T-1 3/4 through-hole) is compatible, but electrical circuit adjustment is mandatory.

Q: What is the difference between HLMP-3301-D0002 and HLMP-3301-F00DD?

A: Both parts share the same 5mm T-1 3/4 form factor, 1.9V forward voltage, and 10mA test current. The primary differences are brightness rating (2.1mcd vs. 5.4mcd) and packaging format (cut tape vs. cut tape). HLMP-3301-F00DD provides higher brightness output and greater inventory availability.

Q: Are all substitute parts RoHS compliant?

A: Yes. All listed substitute parts carry ROHS3 compliance certification, addressing the RoHS non-compliance status of the obsolete MR37519MP5.

Q: Can I use HLMP-3301-D00B2 or HLMP-3301-F00B2 in place of standard radial-lead parts?

A: These parts feature right-angle mounting configuration, which differs from the standard radial through-hole orientation of the MR37519MP5. Use only if your PCB layout accommodates right-angle lead geometry.

Q: Which substitute offers the closest brightness match to the MR37519MP5?

A: The MR37519MP5 is rated at 4mcd. HLMP-3301 and HLMP-3301-F0002 both provide 5.4mcd brightness, offering the closest luminous intensity match. 5219240F provides 6.3mcd brightness. HLMP-3301-D series parts provide 2.1mcd, which is lower than the original specification.

Q: What packaging options are available for high-volume procurement?

A: Broadcom HLMP-3301-F00DD offers the highest inventory (43,381 pcs) in cut tape format. HLMP-3301 provides 28,097 pcs in bulk packaging. Dialight 5219240F provides 2,526 pcs in bulk packaging.

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