QTLP600C2TR Equivalent & Substitute Parts

Part Overview

The QTLP600C2TR is a red 630nm LED indicator in 0603 (1608 Metric) surface mount package manufactured by onsemi. This discrete 2V LED is designed for indication applications with a forward voltage of 2V and test current of 20mA. The part is currently listed as obsolete, making identification of functionally equivalent alternatives necessary for ongoing production and maintenance applications.

Substiute Parts

QTLP600C2TR

onsemiIn Stock: 798QTLP600C2TR Datasheet

Current PartRFQ

APT1608EC

KingbrightIn Stock: 88420APT1608EC Datasheet

SimilarRFQ

QTLP600C2TR

onsemiIn Stock: 798QTLP600C2TR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the QTLP600C2TR is determined by the following critical parameters:

Mandatory Matching Parameters:

• Package / Case: 0603 (1608 Metric)
• Mounting Type: Surface Mount
• Color: Red
• Voltage - Forward (Vf) (Typ): 2V
• Current - Test: 20mA

Allowable Variation Parameters:

• Wavelength - Dominant: Red spectrum (617nm to 630nm acceptable)
• Wavelength - Peak: Red spectrum (627nm to 635nm acceptable)
• Millicandela Rating: Within 8-9mcd range
• Viewing Angle: 100° to 120° acceptable
• Height (Max): 0.75mm to 0.80mm acceptable

The APT1608EC from Kingbright meets all mandatory matching parameters and falls within allowable variation ranges for wavelength and brightness characteristics, qualifying it as a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The APT1608EC is a direct functional substitute for the QTLP600C2TR based on electrical and mechanical compatibility. The substitute part maintains identical forward voltage (2V) and test current (20mA) specifications, ensuring circuit-level compatibility without design modification.

The APT1608EC offers the advantage of active product status with ROHS3 compliance, whereas the QTLP600C2TR is obsolete. The substitute part's slightly lower millicandela rating (8mcd versus 9mcd) and broader viewing angle (120° versus 100°) represent minor performance variations within acceptable tolerance for standard indication applications.

Physical dimensions are identical, enabling direct PCB footprint compatibility. The APT1608EC's reduced maximum height (0.75mm versus 0.80mm) presents no assembly or clearance concerns.

Frequently Asked Questions (FAQ)

Q: Can APT1608EC replace QTLP600C2TR in existing designs? A: Yes. Both parts share identical package dimensions (0603/1608 Metric), forward voltage (2V), and test current (20mA). PCB footprints and circuit connections require no modification.

Q: What is the difference in wavelength between these parts? A: The QTLP600C2TR has a dominant wavelength of 630nm, while the APT1608EC is 617nm. Both fall within the red spectrum. The visual color appearance is red in both cases, with the APT1608EC appearing slightly more orange-red due to the shorter wavelength.

Q: Does the brightness difference matter? A: The QTLP600C2TR is rated at 9mcd while the APT1608EC is 8mcd at 20mA test current. This 1mcd difference is approximately 11% and is typically imperceptible in indication applications. Circuit design should account for this minor variation if brightness is critical.

Q: Are there compliance differences? A: The APT1608EC carries ROHS3 compliance certification. Both parts are REACH Unaffected and share the same ECCN (EAR99) and HTSUS (8541.41.0000) classifications.

Q: What about moisture sensitivity? A: The QTLP600C2TR has MSL 2 (1 Year), while the APT1608EC has MSL 3 (168 Hours). This indicates the substitute part requires more careful moisture control during storage and handling prior to assembly.

Q: Is the wider viewing angle of APT1608EC a concern? A: No. The APT1608EC's 120° viewing angle is broader than the QTLP600C2TR's 100°, which is advantageous for indication applications where visibility from multiple angles is beneficial or neutral.