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Equivalent & Substitute Parts for 4300F1LC Red LED T-1 Through Hole
Part Overview
The 4300F1LC is a red diffused LED indicator manufactured by Visual Communications Company (VCC) in T-1 (3mm) through-hole configuration. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. The part operates at 1.8V forward voltage with a 2mA test current and delivers 1.8mcd luminous intensity at a 50° viewing angle. Due to its discontinued status, equivalent substitute parts from active manufacturers are necessary for ongoing production requirements and design continuity.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Color | Red | — |
| Lens Transparency | Diffused | — |
| Lens Size | 3mm, T-1 | — |
| Lens Style | Round with Domed Top | — |
| Voltage - Forward (Vf) Typical | 1.8V | V |
| Current - Test | 2mA | mA |
| Millicandela Rating | 1.8mcd | mcd |
| Viewing Angle | 50° | degrees |
| Wavelength - Peak | 635nm | nm |
| Mounting Type | Through Hole | — |
| Package / Case | Radial | — |
| Height (Max) | 6.35mm | mm |
| RoHS Status | ROHS3 Compliant | — |
| Moisture Sensitivity Level | 1 (Unlimited) | — |
Substitute Part Grouping Explanation
Substitution eligibility for the 4300F1LC is determined by the following critical parameters:
Primary Compatibility Criteria:
- Color: Red
- Lens Transparency: Diffused
- Lens Size: 3mm, T-1
- Lens Style: Round with Domed Top
- Mounting Type: Through Hole
- Package / Case: Radial
Secondary Compatibility Criteria (Electrical):
- Voltage - Forward (Vf): 1.8V ± tolerance range
- Current - Test: 2mA nominal operation
- Millicandela Rating: 1.8mcd minimum
- Viewing Angle: 50° or greater
- Wavelength - Peak: 635nm ± tolerance range
Compliance Requirements:
- RoHS3 Compliant
- Moisture Sensitivity Level: 1 (Unlimited)
Substitute parts must maintain mechanical compatibility (form factor, mounting) and electrical compatibility (forward voltage, test current, luminous intensity) within acceptable operating ranges. Parts with significantly higher forward voltage requirements (5V, 12V) or substantially different test currents (10mA, 13mA, 20mA) represent different application classes and are listed for reference but require circuit redesign for direct substitution.
Parameter Comparison
| Parameter | 4300F1LC (Main) | HLMP-1700-B0002 | HLMP-1301-G00FG | HLMP-K101 | 3HD-F | 1254-10SURD/S530-A3 |
|---|---|---|---|---|---|---|
| Manufacturer | VCC | Broadcom | Broadcom | Broadcom | Bivar | Everlight |
| Color | Red | Red | Red | Red | Red | Red |
| Lens Transparency | Diffused | Diffused | Diffused | Diffused | Diffused | Diffused |
| Lens Size | 3mm, T-1 | 3mm, T-1 | 3mm, T-1 | 3mm, T-1 | 3mm, T-1 | 3.00mm Dia |
| Lens Style | Round Domed | Round Domed | Round Domed | Round Domed | Round Domed | Round Domed |
| Voltage - Forward (Vf) | 1.8V | 1.7V | 1.9V | 1.8V | 2.0V | 2.0V |
| Current - Test | 2mA | 2mA | 10mA | 20mA | 20mA | 20mA |
| Millicandela Rating | 1.8mcd | 2.1mcd | 8.6mcd | 45mcd | 30mcd | 400mcd |
| Viewing Angle | 50° | 50° | 60° | 60° | 35° | 30° |
| Wavelength - Peak | 635nm | 635nm | 635nm | 645nm | 625nm | 632nm |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Height (Max) | 6.35mm | 6.35mm | 6.35mm | 6.35mm | 5.30mm | 5.30mm |
| Product Status | Not For New Designs | Active | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | — |
| Moisture Sensitivity | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | — |
Engineering Selection Recommendations
Closest Electrical Match: HLMP-1700-B0002 (Broadcom Limited)
The HLMP-1700-B0002 provides the most direct substitution for the 4300F1LC. Both parts operate at nearly identical forward voltages (1.7V vs. 1.8V) and test currents (2mA), ensuring minimal circuit redesign. The luminous intensity (2.1mcd vs. 1.8mcd) is within acceptable tolerance for indicator applications. Both parts maintain identical mechanical form factors (3mm T-1 through-hole radial package, 6.35mm maximum height) and identical viewing angles (50°). Peak wavelengths are identical at 635nm. The HLMP-1700-B0002 is actively produced and ROHS3 compliant with unlimited moisture sensitivity rating. Packaging is available in Cut Tape (CT) format with 21,034 units in stock.
Alternative with Slightly Higher Brightness: HLMP-1301-G00FG (Broadcom Limited)
The HLMP-1301-G00FG maintains mechanical compatibility and operates at 1.9V forward voltage with 10mA test current. The luminous intensity is 8.6mcd, providing approximately 4.8 times greater brightness than the original part. This substitute is suitable for applications where increased visibility is acceptable or beneficial. The viewing angle is 60°, providing wider light distribution. This part is actively produced, ROHS3 compliant, and available in bulk packaging with 1,067 units in stock.
Higher Brightness Option: HLMP-K101 (Broadcom Limited)
The HLMP-K101 offers the highest luminous intensity (45mcd) among mechanically compatible substitutes while maintaining the same 1.8V forward voltage as the original part. However, the test current is 20mA, requiring circuit modification. This part is suitable for applications requiring significantly enhanced brightness. It is actively produced, ROHS3 compliant, with 37,707 units in bulk stock and 648 units in tape & reel format.
Lower Profile Alternative: 3HD-F (Bivar Inc.)
The 3HD-F provides a lower profile option (5.30mm maximum height vs. 6.35mm) while maintaining 3mm T-1 form factor. It operates at 2.0V forward voltage with 20mA test current and delivers 30mcd luminous intensity. The viewing angle is 35°, which is narrower than the original part. This substitute requires circuit redesign due to different voltage and current requirements. It is actively produced, ROHS3 compliant, with 1,103 units in bulk stock.
High Brightness Compact Option: 1254-10SURD/S530-A3 (Everlight Electronics)
The 1254-10SURD/S530-A3 delivers the highest luminous intensity (400mcd) among all listed substitutes but operates at 2.0V with 20mA test current and features a narrower 30° viewing angle. The lower profile (5.30mm) may be advantageous in space-constrained designs. This part requires significant circuit redesign and is packaged in tape & reel format with 817 units in stock.
Parts Requiring Significant Circuit Redesign:
HLMP-1600 and HLMP-1601 operate at 5V and 12V respectively and are not recommended as direct substitutes without substantial circuit modification. These parts are listed for reference in applications where higher supply voltages are available.
Frequently Asked Questions (FAQ)
Q: Can HLMP-1700-B0002 be used as a direct drop-in replacement for 4300F1LC?
A: Yes. The HLMP-1700-B0002 is the closest electrical and mechanical match. Both parts operate at approximately 1.8V forward voltage with 2mA test current, identical 3mm T-1 through-hole radial package configuration, and 50° viewing angle. No circuit modification is required. The luminous intensity difference (2.1mcd vs. 1.8mcd) is negligible for indicator applications.
Q: What is the primary difference between HLMP-1700-B0002 and HLMP-1301-G00FG?
A: The HLMP-1301-G00FG operates at 10mA test current (versus 2mA for HLMP-1700-B0002) and delivers 8.6mcd luminous intensity (versus 2.1mcd). The HLMP-1301-G00FG requires circuit modification to accommodate the higher current draw but provides significantly greater brightness. Both maintain identical mechanical compatibility and 1.8V-1.9V forward voltage range.
Q: Why do some substitutes have different test currents?
A: Test current is the standardized current at which luminous intensity is measured. Parts with higher test currents (10mA, 20mA) are designed for applications requiring greater brightness. Using a higher test current part in a circuit designed for 2mA operation requires resistor value recalculation to maintain proper current limiting and prevent component damage.
Q: Are all listed substitutes ROHS3 compliant?
A: HLMP-1700-B0002, HLMP-1301-G00FG, HLMP-K101, and 3HD-F are confirmed ROHS3 compliant. The 1254-10SURD/S530-A3 does not list ROHS status in the provided specifications. Verify compliance requirements with your procurement department before selection.
Q: What is the significance of the 50° versus 60° viewing angle difference?
A: Viewing angle defines the cone of light distribution. A 50° viewing angle (4300F1LC, HLMP-1700-B0002) provides more focused light distribution. A 60° viewing angle (HLMP-1301-G00FG, HLMP-K101) provides wider light distribution. For indicator applications, both are functionally equivalent unless specific viewing geometry constraints exist.
Q: Can I use HLMP-K101 as a substitute if my circuit operates at 2mA?
A: HLMP-K101 is rated for 20mA test current. Operating it at 2mA will result in significantly reduced luminous intensity (approximately 4.5mcd instead of 45mcd). For proper operation, circuit resistor values must be recalculated to deliver 20mA at the 1.8V forward voltage. Alternatively, use HLMP-1700-B0002 or HLMP-1301-G00FG for minimal circuit modification.
Q: What is the difference between bulk and tape & reel packaging?
A: Bulk packaging is suitable for manual assembly and small-volume production. Tape & reel packaging is required for automated pick-and-place assembly equipment. HLMP-1700-B0002 is available in cut tape format. HLMP-K101 is available in both bulk and tape & reel formats. Verify packaging compatibility with your assembly process before ordering.
Q: Why is the 4300F1LC marked "Not For New Designs"?
A: This designation indicates the part has reached end-of-life status and is no longer recommended for new product development. Existing inventory may be available, but long-term supply cannot be guaranteed. Active substitutes from manufacturers such as Broadcom, Bivar, and Everlight ensure design continuity and supply chain reliability for ongoing production.
Q: Are there mechanical clearance differences between 6.35mm and 5.30mm height parts?
A: Yes. The 3HD-F and 1254-10SURD/S530-A3 are 1.05mm shorter than the original 4300F1LC. This difference may be significant in space-constrained PCB designs. Verify clearance requirements with your mechanical design specifications before substitution.
Q: What wavelength range is acceptable for red LED substitution?
A: The 4300F1LC operates at 635nm peak wavelength. Acceptable substitutes range from 625nm to 645nm, covering the standard red LED spectrum. The 1254-10SURD/S530-A3 (632nm) and 3HD-F (625nm) are within this range. HLMP-K101 (645nm) represents the upper limit of acceptable red wavelength variation.
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