4302F1-12V Red LED Diffused T-1 Through-Hole Equivalent & Substitute Parts

Part Overview

The 4302F1-12V is a red diffused LED indicator manufactured by Visual Communications Company (VCC) designed for 12V discrete radial applications. This T-1 (3mm) through-hole component delivers 8 millicandela at 13mA forward current with a 60-degree viewing angle and 635nm peak wavelength. The part is currently active in production with 1604 units in stock.

Equivalent and substitute parts are identified when circuit designs require component replacement due to inventory constraints, end-of-life status, or application-specific parameter adjustments. The 4302F1-12V operates at a higher forward voltage (12V) compared to standard low-voltage LED indicators, which limits direct substitution to parts with matching or compatible voltage specifications and mechanical form factors.

Key Parameters

Parameter	Value	Unit	Substitution Relevance
Manufacturer Part Number	4302F1-12V	—	Primary identifier
Manufacturer	Visual Communications Company (VCC)	—	Source reference
Color	Red	—	Critical for visual indication matching
Lens Transparency	Diffused	—	Optical characteristic; affects light distribution
Lens Size / Package	T-1 (3mm)	—	Mechanical compatibility; mounting hole diameter
Mounting Type	Through Hole Radial	—	PCB assembly method
Voltage - Forward (Vf)	12V	V	Critical electrical parameter; determines circuit compatibility
Current - Test	13	mA	Operating current specification
Millicandela Rating	8	mcd	Brightness level; affects visibility requirements
Wavelength - Peak	635	nm	Red spectrum confirmation
Viewing Angle	60	°	Light distribution pattern
Height (Max)	6.35	mm	PCB clearance and mechanical fit
RoHS Status	ROHS3 Compliant	—	Environmental compliance requirement
Product Status	Active	—	Availability and long-term supply assurance

Substitute Part Grouping Explanation

Substitution logic for the 4302F1-12V is determined by the following criteria applied strictly to provided parameters:

Primary Substitution Category: Parametric Equivalents (Same Voltage)

Parts classified as parametric equivalents maintain the 12V forward voltage specification, ensuring direct circuit compatibility without resistor or power supply modifications. Within this category:

4302F1-5V (VCC): Same manufacturer, identical mechanical form factor (T-1, 3mm, 6.35mm height), diffused lens, red color, and 60-degree viewing angle. Differs only in forward voltage (5V) and test current (10mA), making it suitable for 5V circuit applications only.
SSL-LX3044ID-12V (Lumex Opto/Components Inc.): Matches 12V forward voltage, T-1 package, diffused red lens, 60-degree viewing angle, and 635nm peak wavelength. Differs in millicandela rating (6mcd vs. 8mcd) and maximum height (4.60mm vs. 6.35mm), representing a lower-brightness alternative with improved PCB clearance.

Secondary Substitution Category: Similar Characteristics (Voltage Variation)

Parts in this category share mechanical and optical properties but operate at different forward voltages. Substitution requires circuit redesign:

HLMP-NG07 (Broadcom Limited): T-1 package, red color, 60-degree viewing angle, 635nm peak wavelength. Operates at 1.9V with 20mA test current and 90.2mcd brightness. Clear lens (not diffused) provides higher intensity. Requires voltage regulation circuit modification.
HLMP-1301-G0000 (Broadcom Limited): T-1 package, red diffused lens, 60-degree viewing angle, 635nm peak wavelength, 1.9V forward voltage, 10mA test current. Mechanical and optical match with voltage incompatibility.
TLLR4400 and TLLR4401 (Vishay Semiconductor Opto Division): T-1 package, diffused red lens, 1.9V forward voltage. TLLR4400 provides 1.2mcd at 2mA; TLLR4401 provides 2mcd at 2mA. Both feature 50-degree viewing angle (narrower than 4302F1-12V) and 619nm dominant wavelength.
LTL-1CHE (Lite-On Inc.): 3.10mm diffused red lens, 2V forward voltage, 20mA test current, 12.6mcd brightness, 60-degree viewing angle. Height of 5.20mm provides better clearance than 4302F1-12V.
WP710A10SRD5V (Kingbright): T-1 package, diffused red lens, 5V forward voltage, 13mA test current, 50mcd brightness. Product status is Obsolete. 40-degree viewing angle (narrower than 4302F1-12V). 640nm dominant wavelength with 655nm peak.

Parameter Comparison

Part Number	Manufacturer	Vf (V)	Test Current (mA)	Brightness (mcd)	Lens Type	Package	Height Max (mm)	Viewing Angle (°)	Peak Wavelength (nm)	Product Status
4302F1-12V	VCC	12	13	8	Diffused Red	T-1 (3mm)	6.35	60	635	Active
4302F1-5V	VCC	5	10	8	Diffused Red	T-1 (3mm)	6.35	60	635	Active
SSL-LX3044ID-12V	Lumex	12	—	6	Diffused Red	T-1 (3mm)	4.60	60	635	Active
HLMP-NG07	Broadcom	1.9	20	90.2	Clear Red	T-1 (3mm)	6.20	60	635	Active
HLMP-1301-G0000	Broadcom	1.9	10	8.6	Diffused Red	T-1 (3mm)	6.35	60	635	Active
TLLR4400	Vishay	1.9	2	1.2	Diffused Red	T-1 (3.2mm)	6.10	50	635	Active
TLLR4401	Vishay	1.9	2	2	Diffused Red	T-1 (3.2mm)	6.10	50	635	Active
LTL-1CHE	Lite-On	2	20	12.6	Diffused Red	3.10mm	5.20	60	635	Active
WP710A10SRD5V	Kingbright	5	13	50	Diffused Red	T-1 (3mm)	5.90	40	655	Obsolete

Engineering Selection Recommendations

Direct Replacement (Same Voltage, Active Status):

SSL-LX3044ID-12V is the only substitute maintaining 12V forward voltage compatibility with active product status. This part is suitable for direct circuit substitution in applications where the 2mcd brightness reduction (from 8mcd to 6mcd) is acceptable. The lower maximum height (4.60mm vs. 6.35mm) provides improved PCB clearance. All compliance certifications (ROHS3, REACH Unaffected, EAR99) match the primary part.

Voltage-Adjusted Substitution (Active Status, Circuit Modification Required):

For applications permitting circuit redesign, the following active parts offer alternatives:

HLMP-1301-G0000 provides identical brightness (8.6mcd) and mechanical dimensions to 4302F1-12V but requires 1.9V supply. Diffused lens and 60-degree viewing angle maintain optical characteristics.
LTL-1CHE operates at 2V with higher brightness (12.6mcd) and improved PCB clearance (5.20mm height). Diffused lens and 60-degree viewing angle are preserved.
HLMP-NG07 delivers significantly higher brightness (90.2mcd) at 1.9V but features a clear lens instead of diffused, altering light distribution characteristics.

Avoid for New Designs:

WP710A10SRD5V carries Obsolete product status and should not be selected for new applications despite active inventory levels.

Frequently Asked Questions (FAQ)

Q: Can 4302F1-5V replace 4302F1-12V in a 12V circuit?

A: No. The 4302F1-5V is rated for 5V forward voltage and will not operate correctly in a 12V circuit without additional current-limiting resistor modifications. Both parts are manufactured by VCC with identical mechanical and optical properties, but voltage specifications are not interchangeable without circuit redesign.

Q: What is the difference between diffused and clear lens types?

A: Diffused lenses scatter light over a wider area with lower peak intensity, suitable for general indication. Clear lenses concentrate light with higher brightness but narrower effective viewing area. HLMP-NG07 uses a clear lens and delivers 90.2mcd compared to 8mcd for diffused alternatives, making it unsuitable for applications requiring soft, distributed illumination.

Q: Is SSL-LX3044ID-12V a true equivalent to 4302F1-12V?

A: SSL-LX3044ID-12V is a parametric equivalent for 12V applications. It maintains forward voltage (12V), package (T-1, 3mm), lens type (diffused red), viewing angle (60°), and peak wavelength (635nm). The brightness is lower (6mcd vs. 8mcd), and maximum height is reduced (4.60mm vs. 6.35mm). These differences are acceptable in most indicator applications where exact brightness matching is not critical.

Q: Can I use HLMP-1301-G0000 as a direct drop-in replacement?

A: No. While HLMP-1301-G0000 matches mechanical dimensions (T-1, 3mm, 6.35mm height), lens type (diffused red), and brightness (8.6mcd), it operates at 1.9V instead of 12V. Direct substitution requires circuit modification to provide 1.9V supply or addition of a voltage regulator. The part is not a drop-in replacement without electrical redesign.

Q: Why is WP710A10SRD5V listed if it is obsolete?

A: WP710A10SRD5V is included in the substitute list because it was referenced in the original part's substitution data. However, its Obsolete product status means it should not be selected for new designs or long-term applications. Existing inventory may be available, but future supply cannot be assured.

Q: What are the key parameters I must verify when selecting a substitute?

A: Critical parameters for substitution are: (1) Forward voltage (Vf) compatibility with circuit supply; (2) Package type (T-1 through-hole) for mechanical fit; (3) Lens type (diffused vs. clear) for optical requirements; (4) Brightness (millicandela) for visibility requirements; (5) Viewing angle for application geometry; (6) Product status (Active vs. Obsolete) for supply assurance; (7) RoHS and REACH compliance for regulatory requirements.

Q: Can I substitute a 1.9V LED for a 12V LED without changing the circuit?

A: No. Forward voltage is a critical electrical parameter. A 1.9V LED in a 12V circuit will be destroyed by excessive current unless a current-limiting resistor is added. Conversely, a 12V LED in a 1.9V circuit will not illuminate. Voltage substitution always requires circuit analysis and modification.

Q: Are all listed substitutes RoHS3 compliant?

A: Yes. All parts in this reference, including the primary part 4302F1-12V and all substitutes, carry ROHS3 Compliant status. All are also REACH Unaffected and classified as EAR99 for export control purposes.

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