LTL-912VRKSA Equivalent & Substitute Parts

Part Overview

The LTL-912VRKSA is a red LED indication component manufactured by Lite-On Inc., designed for through-hole mounting applications. This part operates at a forward voltage of 2.15V with a dominant wavelength of 631nm and provides 1.2mcd luminous intensity. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations.

Substiute Parts

LTL-912VRKSA

Lite-On Inc.In Stock: 733LTL-912VRKSA Datasheet

Current PartRFQ

CP41B-RDS-CL0P0EE4

CreeLED, Inc.In Stock: 1362CP41B-RDS-CL0P0EE4 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTL-912VRKSA is determined by the following critical parameters:

• Color and Wavelength: Red spectrum LEDs with dominant wavelengths between 628nm and 631nm maintain visual consistency and application compatibility
• Package Configuration: 4-DIP (0.200", 5.08mm) through-hole package ensures mechanical and electrical compatibility with existing PCB layouts
• Lens Specifications: 3.00mm diameter round domed top lens with clear transparency preserves optical characteristics
• Electrical Ratings: Forward voltage tolerance and 70mA test current define safe operating conditions
• Mounting Type: Through-hole mounting requirement is non-negotiable for legacy system compatibility

The CP41B-RDS-CL0P0EE4 meets these substitution criteria across all critical parameters.

Parameter Comparison

Engineering Selection Recommendations

The CP41B-RDS-CL0P0EE4 is a direct substitute for the obsolete LTL-912VRKSA. Both components share identical package geometry, lens specifications, and mounting configuration. The substitute part is currently in active production status with 1291 units available in inventory.

Key considerations for selection:

• Forward Voltage Differential: The CP41B-RDS-CL0P0EE4 operates at 2.5V compared to the original 2.15V. Circuit designs must accommodate this 0.35V increase in forward voltage drop.
• Wavelength Compatibility: The dominant wavelength shift from 631nm to 628nm remains within the red spectrum and maintains visual compatibility for indication applications.
• Viewing Angle: The substitute part provides a 40° viewing angle versus the original 50°. Applications requiring wide-angle visibility should evaluate this reduction.
• Compliance Status: The CP41B-RDS-CL0P0EE4 is RoHS Compliant, whereas the original part is RoHS non-compliant. This provides regulatory advantage for new designs and updated systems.

Frequently Asked Questions (FAQ)

Q: Can the CP41B-RDS-CL0P0EE4 be used as a direct drop-in replacement for the LTL-912VRKSA?

A: The CP41B-RDS-CL0P0EE4 is mechanically and electrically compatible for through-hole PCB mounting. However, the forward voltage increase from 2.15V to 2.5V requires circuit verification to ensure current-limiting resistor values remain appropriate for the application.

Q: What is the impact of the 0.35V forward voltage difference?

A: In series LED circuits, the higher forward voltage of the substitute part will reduce current flow slightly if the same resistor value is used. Recalculate current-limiting resistor values based on the new 2.5V forward voltage specification to maintain desired LED brightness.

Q: Does the 10° reduction in viewing angle affect compatibility?

A: The viewing angle reduction from 50° to 40° narrows the light distribution cone. Applications requiring wide-angle visibility should evaluate whether the 40° angle meets optical requirements.

Q: Are there any compliance differences between these parts?

A: The CP41B-RDS-CL0P0EE4 is RoHS Compliant, while the LTL-912VRKSA is RoHS non-compliant. For new designs or systems requiring RoHS compliance, the substitute part provides regulatory alignment.

Q: Is the wavelength shift from 631nm to 628nm visually noticeable?

A: Both wavelengths fall within the red spectrum. The 3nm difference is not perceptually significant for human vision in indication applications.