MV8191 LED Red Diffused T-1 3/4 Through Hole - Equivalent & Substitute Parts

Part Overview

The MV8191 is a red diffused LED indicator from onsemi, classified as an obsolete product. This through-hole mounted component features a 5mm T-1 3/4 lens form factor with a 200mcd brightness rating and 1.7V forward voltage at 20mA test current. Due to its obsolete status, equivalent substitute parts from active manufacturers are necessary for new designs and ongoing production requirements. Substitute parts must maintain compatibility with through-hole mounting, red color specification, and diffused lens characteristics while accommodating variations in electrical performance parameters.

Key Parameters

Parameter	MV8191 Specification
Manufacturer	onsemi
Product Status	Obsolete
Color	Red
Lens Transparency	Diffused
Lens Size	5mm, T-1 3/4
Mounting Type	Through Hole
Voltage - Forward (Vf) Typical	1.7V
Current - Test	20mA
Millicandela Rating	200mcd
Wavelength - Peak	660nm
Viewing Angle	45°
Height Maximum	8.90mm
Package / Case	Radial
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution logic for the MV8191 is based on the following mandatory parameters: red color, diffused lens transparency, through-hole mounting type, 5mm lens diameter form factor, radial package configuration, and MSL 1 moisture sensitivity rating. All substitute parts listed maintain these core characteristics.

Electrical parameter variations are permitted within the following ranges: forward voltage between 1.9V and 2.1V, test current between 10mA and 20mA, and millicandela ratings from 2.1mcd to 200mcd. Wavelength specifications range from 623nm to 660nm peak wavelength. Viewing angle variations from 45° to 60° are acceptable. Height tolerance extends to 9.19mm maximum.

All substitute parts must be active products with RoHS3 compliance and REACH unaffected status to ensure long-term availability and regulatory compliance.

Parameter Comparison

Part Number	Manufacturer	Product Status	Vf (Typ)	Current - Test	mcd Rating	Wavelength Peak	Viewing Angle	Height Max	RoHS Status
MV8191	onsemi	Obsolete	1.7V	20mA	200mcd	660nm	45°	8.90mm	-
151051RS11000	Würth Elektronik	Active	2.1V	20mA	30mcd	650nm	60°	8.95mm	ROHS3 Compliant
5219240F	Dialight	Active	-	10mA	6.3mcd	-	-	8.94mm	ROHS3 Compliant
5219480F	Dialight	Active	-	-	-	-	-	-	ROHS3 Compliant
5219672F	Dialight	Active	2V	20mA	60mcd	635nm	60°	8.21mm	ROHS3 Compliant
HLMP-3301	Broadcom Limited	Active	1.9V	10mA	5.4mcd	635nm	60°	9.19mm	ROHS3 Compliant
HLMP-3301-D0000	Broadcom Limited	Active	1.9V	10mA	2.1mcd	635nm	60°	9.19mm	ROHS3 Compliant
HLMP-3301-D0001	Broadcom Limited	Active	1.9V	10mA	2.1mcd	635nm	60°	9.19mm	ROHS3 Compliant
HLMP-3301-D0002	Broadcom Limited	Active	1.9V	10mA	2.1mcd	635nm	60°	9.19mm	ROHS3 Compliant
HLMP-3301-F0001	Broadcom Limited	Active	1.9V	10mA	5.4mcd	635nm	60°	9.19mm	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts are active products with RoHS3 compliance and REACH unaffected status, ensuring regulatory alignment and long-term supply availability. The MV8191 obsolete status necessitates transition to active alternatives.

For applications requiring brightness levels closest to the original 200mcd specification, the 5219672F from Dialight (60mcd at 20mA, 2V forward voltage) provides the highest millicandela rating among active substitutes while maintaining 20mA test current compatibility.

For applications with lower brightness requirements or reduced power consumption, the Broadcom HLMP-3301 series variants operate at 10mA test current with 1.9V forward voltage, reducing circuit power dissipation compared to the original specification.

The Würth Elektronik 151051RS11000 maintains 20mA test current operation with 2.1V forward voltage and 30mcd brightness, offering a mid-range alternative with active product status and full RoHS3 compliance.

Selection should prioritize active product status and RoHS3 compliance as primary criteria. Brightness and forward voltage variations must be evaluated against specific circuit design requirements and power budget constraints.

Frequently Asked Questions (FAQ)

Q: Can the MV8191 be directly replaced with any of these substitute parts?

A: Direct replacement requires matching the through-hole mounting type, 5mm T-1 3/4 lens form factor, red color, and diffused lens transparency. All listed substitutes meet these mechanical and optical requirements. Electrical parameter differences (forward voltage, test current, brightness) must be evaluated against circuit design specifications.

Q: What is the primary difference between the Broadcom HLMP-3301 variants?

A: The HLMP-3301 base part and variants (D0000, D0001, D0002, F0001) share identical electrical specifications (1.9V, 10mA, 635nm peak wavelength, 60° viewing angle). Differences exist in packaging format: bulk, cut tape, tape & reel, and right-angle housing configurations. Selection depends on procurement and assembly requirements.

Q: How do brightness ratings affect substitution?

A: The MV8191 operates at 200mcd, significantly higher than most active substitutes. The 5219672F provides the highest alternative brightness at 60mcd. Lower brightness substitutes (2.1mcd to 30mcd range) are suitable only for applications where reduced luminous intensity is acceptable or beneficial for power reduction.

Q: Are all substitutes RoHS3 compliant?

A: Yes. All listed substitute parts carry RoHS3 compliance certification and REACH unaffected status, meeting current regulatory requirements for electronic component procurement.

Q: What packaging options are available for the Broadcom HLMP-3301?

A: The HLMP-3301 series is available in bulk, cut tape (CT), tape & reel (TR), and right-angle housing (D00B2) configurations. Selection depends on production volume, assembly equipment compatibility, and circuit board layout requirements.

Q: Can forward voltage differences impact circuit design?

A: Yes. The MV8191 operates at 1.7V typical, while substitutes range from 1.9V to 2.1V. Higher forward voltages require circuit resistor recalculation to maintain desired LED current. Lower forward voltage substitutes reduce voltage drop across the LED, increasing voltage across series resistors.

Q: What is the significance of the 45° versus 60° viewing angle difference?

A: The MV8191 provides a narrower 45° viewing angle, while most substitutes offer 60° viewing angle. Wider viewing angles increase light visibility from off-axis positions but may reduce peak brightness in the direct viewing direction. Application requirements determine acceptable viewing angle specifications.

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