QTLP2827 Equivalent & Substitute Parts

Part Overview

The QTLP2827 is a red LED indication component manufactured by onsemi, designed for through-hole axial mounting applications. This part features a 2V forward voltage, 17mcd brightness rating, and a clear rectangular lens with flat top design. The product is currently obsolete, making identification of suitable substitute components essential for ongoing design requirements and production continuity.

Substiute Parts

QTLP2827

onsemiIn Stock: 965QTLP2827 Datasheet

Current PartRFQ

CMD28-21VRC/TR8

Visual Communications Company - VCCIn Stock: 47049CMD28-21VRC/TR8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the QTLP2827 is based on the following critical parameters that must align for functional compatibility:

Electrical Parameters (Required Match):

• Voltage - Forward (Vf): 2V
• Current - Test: 20mA
• Viewing Angle: 150°

Optical Parameters (Required Match):

• Color: Red
• Lens Transparency: Clear
• Lens Style: Rectangle with Flat Top
• Lens Size: 2.50mm x 2.00mm
• Wavelength - Peak: 660nm or 640nm (acceptable range for red indication)

Mechanical Considerations:

• Mounting type differs between through-hole axial and surface-mount configurations
• Physical dimensions and height specifications must be evaluated for board layout compatibility

The CMD28-21VRC/TR8 qualifies as a substitute based on matching electrical specifications, optical characteristics, and lens dimensions. The primary difference is the mounting technology: surface-mount versus through-hole axial.

Parameter Comparison

Engineering Selection Recommendations

The CMD28-21VRC/TR8 serves as an active substitute for the obsolete QTLP2827 based on electrical and optical parameter alignment. Selection considerations include:

Compatibility Factors:

• Electrical specifications (2V forward voltage, 20mA test current) are identical
• Optical characteristics (red color, clear lens, 150° viewing angle, matching lens dimensions) are equivalent
• Wavelength peak differs by 20nm (660nm vs 640nm), remaining within acceptable red LED indication range

Implementation Differences:

• Mounting technology transition from through-hole axial to surface-mount requires PCB redesign
• The CMD28-21VRC/TR8 is supplied in Tape & Reel packaging, suitable for automated assembly
• Brightness rating is lower (3mcd vs 17mcd); circuit design must account for this difference through current limiting resistor adjustment

Compliance Status:

• CMD28-21VRC/TR8 is RoHS3 compliant and carries active product status
• Both parts share identical REACH and ECCN classifications

Frequently Asked Questions (FAQ)

Q: Can the CMD28-21VRC/TR8 directly replace the QTLP2827 without circuit modification?

A: Direct replacement requires PCB redesign due to mounting type differences (surface-mount vs through-hole axial). Additionally, the lower brightness rating (3mcd vs 17mcd) necessitates circuit current adjustment to maintain equivalent optical output.

Q: What is the primary reason for substitution?

A: The QTLP2827 is obsolete. The CMD28-21VRC/TR8 is an active product with matching electrical and optical specifications, making it suitable for new designs or production continuation.

Q: Are the lens dimensions identical?

A: Yes. Both parts feature 2.50mm x 2.00mm rectangular lenses with flat top design and clear transparency, ensuring visual compatibility in indicator applications.

Q: How do the wavelength specifications compare?

A: The QTLP2827 has a peak wavelength of 660nm, while the CMD28-21VRC/TR8 is 640nm. Both fall within the red LED spectrum and are functionally equivalent for indication purposes.

Q: What packaging differences exist?

A: The QTLP2827 is supplied in bulk form. The CMD28-21VRC/TR8 is supplied in Tape & Reel (TR) packaging, optimized for automated surface-mount assembly processes.

Q: Is the CMD28-21VRC/TR8 RoHS compliant?

A: Yes, the CMD28-21VRC/TR8 is RoHS3 compliant. Both parts are REACH unaffected and carry identical ECCN and HTSUS classifications.