TLHP4200 Equivalent & Substitute Parts

Part Overview

The TLHP4200 is a green LED indicator manufactured by Vishay Semiconductor Opto Division, designed for through-hole mounting applications. This part operates at 2.4V forward voltage with a 7mcd brightness rating and features a clear lens with 560nm dominant wavelength. The product is currently obsolete, necessitating identification of functionally equivalent alternatives for ongoing applications and new designs.

Substiute Parts

TLHP4200

Vishay Semiconductor Opto DivisionIn Stock: 835TLHP4200 Datasheet

Current PartRFQ

5219430F

DialightIn Stock: 12695219430F Datasheet

MFR RecommendedRFQ

SLI-343MC3F

Rohm SemiconductorIn Stock: 1631SLI-343MC3F Datasheet

MFR RecommendedRFQ

SLI-343MG3F

Rohm SemiconductorIn Stock: 10850SLI-343MG3F Datasheet

MFR RecommendedRFQ

SLI-343P8C3F

Rohm SemiconductorIn Stock: 23966SLI-343P8C3F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TLHP4200 is determined by the following critical parameters:

• Color: Green wavelength emission (560nm dominant or equivalent green spectrum)
• Lens Transparency: Clear optical transmission
• Mounting Type: Through-hole radial configuration
• Lens Size: 3mm T-1 form factor
• Voltage Compatibility: Forward voltage within acceptable circuit design tolerance (2.1V to 2.4V range)
• Current Rating: Test current at 10mA to 20mA
• Compliance: ROHS3 compliant, REACH unaffected status

The four substitute parts meet these criteria with variations in brightness (millicandela rating), test current, and product status. All substitutes maintain the same physical form factor, mounting method, and regulatory compliance as the original TLHP4200.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: SLI-343P8C3F (Rohm Semiconductor)

The SLI-343P8C3F is the most direct equivalent to the TLHP4200. It maintains identical color (green), lens transparency (clear), and wavelength-dominant specification (560nm). Forward voltage is 2.2V, within acceptable tolerance of the original 2.4V specification. The part is active in production status with full ROHS3 compliance and REACH unaffected certification. Higher test current (20mA vs. 10mA) and increased brightness (22mcd vs. 7mcd) provide improved visibility margin in indicator applications.

Secondary Substitute: 5219430F (Dialight)

The 5219430F offers active product status with identical test current (10mA) to the original part. Forward voltage of 2.1V is compatible with most circuit designs. The 50mcd brightness rating provides significant visibility improvement. Lens size is marginally smaller (2.90mm vs. 3mm), which may require mechanical verification in constrained mounting spaces.

Alternative Substitute: SLI-343MG3F (Rohm Semiconductor)

The SLI-343MG3F provides the highest brightness option (180mcd) with green color and 572nm dominant wavelength. Diffused lens transparency differs from the original clear specification and may alter visual appearance in the application. Product status is "Not For New Designs," limiting suitability for new development projects.

Not Recommended: SLI-343MC3F (Rohm Semiconductor)

The SLI-343MC3F is yellow-green rather than pure green, with 572nm peak wavelength. This color shift may not meet application requirements for green indication. While active in production, the color specification deviation makes this substitute unsuitable for direct replacement.

Frequently Asked Questions (FAQ)

Q: Can the SLI-343P8C3F replace the TLHP4200 in existing designs?

A: Yes. The SLI-343P8C3F maintains the same green color, clear lens, 560nm wavelength, and through-hole radial mounting. Forward voltage of 2.2V is within acceptable tolerance of the original 2.4V. Circuit designs must accommodate the higher test current specification (20mA vs. 10mA) and increased brightness (22mcd vs. 7mcd).

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

A: Clear lenses provide focused light transmission with directional intensity. Diffused lenses scatter light over a wider area with reduced peak intensity. The TLHP4200 uses clear transparency; substitutes with diffused lenses (SLI-343MG3F) will alter the visual appearance and light distribution pattern in the application.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four substitute parts listed carry ROHS3 compliance certification and REACH unaffected status, matching the regulatory compliance of the original TLHP4200.

Q: How does forward voltage affect circuit compatibility?

A: The TLHP4200 operates at 2.4V forward voltage. Substitute parts range from 2.1V to 2.2V. Lower forward voltage reduces power dissipation and may require current-limiting resistor adjustment in the circuit. Verify that the power supply and current-limiting design accommodate the voltage variation.

Q: What is the significance of product status (Active vs. Obsolete)?

A: Active status indicates ongoing manufacturing and long-term availability. Obsolete status indicates the part is no longer manufactured. "Not For New Designs" indicates the part is available but not recommended for new development. For new projects, prioritize Active status parts (5219430F, SLI-343MC3F, SLI-343P8C3F).

Q: Can I use a higher brightness substitute in place of the lower brightness original?

A: Yes, provided the circuit design accommodates the increased current draw. Higher brightness substitutes (50mcd to 200mcd vs. 7mcd original) require verification that current-limiting resistors and power supply capacity are adequate. Visual appearance in the application may also be affected by increased brightness.

Q: What mounting considerations apply to these substitutes?

A: All substitutes use through-hole radial mounting identical to the TLHP4200. Height variations (5.60mm to 6.10mm) are minor and typically do not affect PCB layout. Lens size variations (2.90mm to 3.10mm) are within standard T-1 form factor tolerance and do not require mechanical redesign.