LED RED CLEAR T-1 3/4 T/H 5705H1 Equivalent & Substitute Parts

Part Overview

The 5705H1 is a red LED indication component manufactured by Visual Communications Company (VCC) in a T-1 3/4 through-hole radial package. This discrete 2V red LED operates at 20mA test current with a peak wavelength of 650nm and delivers 68 millicandela brightness. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations where this component is specified.

Substiute Parts

5705H1

Visual Communications Company - VCCIn Stock: 8825705H1 Datasheet

Current PartRFQ

HLMP-EG3E-QT000

Broadcom LimitedIn Stock: 1270HLMP-EG3E-QT000 Datasheet

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LE-0503-03R

JKL Components Corp.In Stock: 797LE-0503-03R Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5705H1 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Lens size and form factor: T-1 3/4 (5mm) through-hole radial package
• Color: Red
• Lens style: Round with domed top
• Lens transparency: Clear
• Mounting type: Through hole radial configuration
• Forward voltage range: 2V nominal (tolerance band 1.8V to 2.2V acceptable)
• Test current: 20mA standard
• Wavelength range: Red spectrum (620nm to 660nm peak acceptable)
• Regulatory compliance: ROHS3 compliant minimum

Identified Substitute Parts:

1. HLMP-EG3E-QT000 (Broadcom Limited) - Direct form factor substitute with active product status
2. LE-0503-03R (JKL Components Corp.) - Alternative red LED with different mounting base type (wedge configuration)

The HLMP-EG3E-QT000 maintains identical T-1 3/4 through-hole radial package geometry and red color specification. The LE-0503-03R operates on different electrical parameters (12V forward voltage, wedge base) and represents a functional alternative for red LED indication applications where form factor flexibility exists.

Parameter Comparison

Engineering Selection Recommendations

For Direct Form Factor Replacement:

The HLMP-EG3E-QT000 from Broadcom Limited is the primary substitute for the obsolete 5705H1. This component maintains identical T-1 3/4 through-hole radial package geometry, clear lens configuration, and round domed top lens style. Forward voltage is 2.1V (0.1V higher than the 5705H1), and test current remains 20mA. Peak wavelength shifts from 650nm to 634nm, remaining within the red spectrum. The HLMP-EG3E-QT000 carries active product status with ROHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term availability and regulatory alignment.

For Alternative Applications:

The LE-0503-03R from JKL Components Corp. represents a functional alternative for red LED indication where circuit design permits different electrical parameters. This component operates at 12V forward voltage with 25mA test current and delivers significantly higher brightness at 7200mcd. The wedge base configuration differs from the radial through-hole package of the 5705H1, requiring circuit board layout modification. This substitute is suitable only when system requirements allow for higher voltage operation and increased luminous intensity.

Compliance and Availability:

All identified substitutes maintain ROHS3 compliance and EAR99 export classification, matching the regulatory profile of the original 5705H1. The HLMP-EG3E-QT000 is recommended as the primary replacement due to electrical and mechanical parameter alignment. The LE-0503-03R requires circuit redesign and is applicable only when functional requirements diverge from the original specification.

Frequently Asked Questions (FAQ)

Q: Can the HLMP-EG3E-QT000 directly replace the 5705H1 in existing circuit boards?

A: Yes, the HLMP-EG3E-QT000 is a direct mechanical and electrical substitute. Both components use identical T-1 3/4 through-hole radial packages with round domed top clear lenses. Forward voltage differs by 0.1V (2.1V versus 2V), which is within typical circuit tolerance for LED indication applications. No circuit board layout modification is required.

Q: What is the wavelength difference between the 5705H1 and HLMP-EG3E-QT000?

A: The 5705H1 has a peak wavelength of 650nm, while the HLMP-EG3E-QT000 operates at 634nm. Both wavelengths fall within the red spectrum. The 16nm difference may produce a slightly different red hue perception, but both components are classified as red LEDs for indication purposes.

Q: Why is the LE-0503-03R listed as a substitute if it uses a wedge base instead of radial through-hole?

A: The LE-0503-03R is a functional substitute for applications where red LED indication is required but circuit design permits different mounting configurations. This component is not a direct replacement due to its wedge base and 12V operating voltage. It is applicable only when system redesign is acceptable and higher brightness output is beneficial.

Q: Are all three components ROHS3 compliant?

A: Yes, the 5705H1, HLMP-EG3E-QT000, and LE-0503-03R are all ROHS3 compliant with moisture sensitivity level 1 (unlimited). All three components carry EAR99 export classification and 8541.41.0000 HTSUS code.

Q: What is the viewing angle of the HLMP-EG3E-QT000?

A: The HLMP-EG3E-QT000 has a 30-degree viewing angle. The 5705H1 viewing angle is not specified in the available data.

Q: Can the LE-0503-03R be used in applications designed for the 5705H1?

A: The LE-0503-03R can only be used if the circuit design is modified to accommodate 12V forward voltage operation and wedge base mounting. The 7200mcd brightness is significantly higher than the 5705H1's 68mcd, which may require current-limiting resistor adjustment. Direct substitution without circuit modification is not possible.