LTL-4234-012 Equivalent & Substitute Parts

Part Overview

The LTL-4234-012 is an active green LED indicator manufactured by Lite-On Inc., designed for through-hole mounting applications. This T-1 3/4 (5mm) radial LED operates at 2.1V forward voltage with a dominant wavelength of 569nm and provides 60mcd luminous intensity. The component is ROHS3 compliant and currently in active production status with 990 units available in stock.

Substitute parts are identified when electrical characteristics, mechanical form factors, and compliance certifications align within acceptable tolerances for the intended application. The following analysis identifies equivalent components based on matching core parameters.

Substiute Parts

LTL-4234-012

Lite-On Inc.In Stock: 1069LTL-4234-012 Datasheet

Current PartRFQ

HLMP-3519

Broadcom LimitedIn Stock: 36785HLMP-3519 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTL-4234-012 is determined by the following criteria:

Mandatory Matching Parameters:

• Lens Size: 5mm, T-1 3/4
• Mounting Type: Through Hole
• Voltage - Forward (Vf): 2.1V
• Wavelength - Dominant: 569nm
• Lens Color: Green
• Lens Transparency: Clear
• Package / Case: Radial
• RoHS Status: ROHS3 Compliant

Allowable Variation Parameters:

• Millicandela Rating: Variation permitted within application tolerance
• Current - Test: Variation permitted; affects brightness at specified test current
• Viewing Angle: Variation permitted; affects light distribution pattern
• Height (Max): Minor variation permitted within mechanical envelope constraints
• Packaging Format: May differ (Tape & Reel vs. Bulk) without affecting electrical function

The HLMP-3519 from Broadcom Limited meets all mandatory matching criteria and is therefore classified as an electrical and mechanical equivalent.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection Criteria:

The LTL-4234-012 and HLMP-3519 are electrically and mechanically interchangeable for through-hole green LED indicator applications. Both components share identical forward voltage (2.1V), dominant wavelength (569nm), and physical form factor (5mm T-1 3/4 radial).

Substitution Considerations:

1. Luminous Intensity: The HLMP-3519 provides 70mcd compared to the LTL-4234-012's 60mcd. This higher brightness may be advantageous in applications requiring greater visibility, or may require circuit adjustment if brightness consistency is critical.

2. Viewing Angle: The HLMP-3519 offers a 24° viewing angle versus the LTL-4234-012's 16°. The wider angle provides improved visibility across a broader range of observation positions.

3. Physical Height: The HLMP-3519 is 0.66mm shorter (9.19mm vs. 9.85mm). This difference is negligible for standard PCB applications and does not affect mechanical compatibility.

4. Compliance: Both components are ROHS3 compliant and suitable for regulated applications.

5. Packaging Format: The LTL-4234-012 is supplied in Tape & Reel format, while the HLMP-3519 is supplied in Bulk packaging. This affects procurement and assembly logistics but not electrical performance.

Selection Logic:

• Use LTL-4234-012 when existing inventory is available and brightness/viewing angle specifications are met.
• Use HLMP-3519 as a substitute when higher brightness or wider viewing angle is beneficial, or when Lite-On supply is unavailable.
• Both parts are suitable for direct PCB replacement without circuit modification.

Frequently Asked Questions (FAQ)

Q: Can the HLMP-3519 be used as a direct replacement for the LTL-4234-012 on an existing PCB?

A: Yes. Both components have identical forward voltage (2.1V), wavelength (569nm), mounting type (through-hole), and physical form factor (5mm T-1 3/4 radial). No circuit modification is required. The HLMP-3519 will function identically in the same PCB footprint.

Q: What is the difference in brightness between these two LEDs?

A: The HLMP-3519 is rated at 70mcd while the LTL-4234-012 is rated at 60mcd. The HLMP-3519 provides approximately 17% higher luminous intensity. Both are measured at their respective test currents (10mA and 20mA).

Q: Will the different viewing angles affect circuit performance?

A: No. Viewing angle affects the spatial distribution of light but does not impact electrical circuit behavior. The HLMP-3519's wider 24° viewing angle provides visibility across a broader range of observation positions compared to the LTL-4234-012's 16° angle.

Q: Are there any compliance or regulatory differences between these parts?

A: No. Both components are ROHS3 compliant and carry identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications.

Q: Does the height difference (9.85mm vs. 9.19mm) affect PCB assembly?

A: No. The 0.66mm difference is within standard PCB clearance tolerances and does not affect mechanical compatibility or assembly processes.

Q: Can I use the HLMP-3519 if my application requires exactly 60mcd brightness?

A: The HLMP-3519's higher brightness (70mcd) may not be suitable if the application requires precise brightness matching. In this case, retain the LTL-4234-012 or consult the application requirements to determine if higher brightness is acceptable.

Q: What is the difference between Tape & Reel and Bulk packaging?

A: Tape & Reel packaging is used for automated assembly lines, while Bulk packaging is used for manual assembly or smaller quantities. This affects procurement and assembly logistics but does not impact electrical or mechanical performance.

Q: Are both parts currently in production?

A: Yes. Both the LTL-4234-012 and HLMP-3519 are listed as Active products in current production.