QTLP600CBTR LED Blue 0603 SMD Equivalent & Substitute Parts

Part Overview

The QTLP600CBTR is a blue LED indicator manufactured by Everlight Electronics Co Ltd, designed for discrete indication applications in 0603 (1608 Metric) surface mount packages. This component features a 465nm dominant wavelength with 20mcd luminous intensity and operates at 3.8V forward voltage with 20mA test current.

The QTLP600CBTR is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

QTLP600CBTR

Everlight Electronics Co LtdIn Stock: 986QTLP600CBTR Datasheet

Current PartRFQ

NTE30019

NTE Electronics, IncIn Stock: 3844NTE30019 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the QTLP600CBTR is determined by the following critical parameters:

Package Compatibility: Both the main part and substitute must use the 0603 (1608 Metric) surface mount package with identical footprint dimensions (1.60mm L x 0.80mm W) to ensure PCB assembly compatibility without design modification.

Optical Characteristics: The substitute must be a blue LED with clear lens transparency. Dominant wavelength must fall within the blue spectrum range (typically 460nm to 475nm) to maintain functional equivalence for indication applications.

Electrical Parameters: Forward voltage (Vf) and test current must be compatible with existing circuit designs. The substitute must operate within acceptable ranges of the original 3.8V / 20mA specification to prevent circuit redesign requirements.

Mechanical Fit: Maximum height must not exceed the original 0.80mm specification to ensure clearance within existing PCB layouts and enclosure designs.

Regulatory Compliance: The substitute must maintain ROHS3 compliance status to satisfy environmental and regulatory requirements equivalent to the original component.

The NTE30019 meets all substitution criteria within these defined parameters.

Parameter Comparison

Engineering Selection Recommendations

NTE30019 Substitution Basis:

The NTE30019 qualifies as a direct substitute for the obsolete QTLP600CBTR based on the following engineering criteria:

Package and Mechanical Compatibility: Both components use identical 0603 (1608 Metric) surface mount packages with matching footprint dimensions. The NTE30019 height of 0.75mm is 0.05mm lower than the original 0.80mm maximum, ensuring compatibility with existing PCB layouts and enclosure clearances.

Optical Equivalence: Both components are blue LEDs with clear lens transparency. The wavelength difference (465nm vs. 470nm) represents a 5nm shift within the blue spectrum and does not affect functional equivalence for indication applications.

Electrical Compatibility: The NTE30019 forward voltage of 3.5V is 0.3V lower than the QTLP600CBTR specification of 3.8V. This difference is within typical circuit design tolerances and does not require circuit modification. Both components operate at identical 20mA test current.

Performance Enhancement: The NTE30019 provides 52mcd luminous intensity compared to the original 20mcd, representing a 2.6x brightness increase. The wider 140° viewing angle compared to 100° provides improved visibility characteristics. These enhancements are compatible with applications designed for the original component.

Regulatory Compliance: Both components maintain ROHS3 compliance status, satisfying equivalent environmental and regulatory requirements.

Supply Availability: The NTE30019 is in active production status with 3824 pieces in stock, compared to the obsolete QTLP600CBTR status with limited remaining inventory.

Frequently Asked Questions (FAQ)

Q: Can the NTE30019 be used as a direct replacement for the QTLP600CBTR without PCB modification?

A: Yes. Both components use identical 0603 (1608 Metric) surface mount packages with matching footprint dimensions (1.60mm L x 0.80mm W). No PCB layout changes are required for mechanical compatibility.

Q: What is the significance of the 0.3V forward voltage difference between these components?

A: The NTE30019 operates at 3.5V compared to the QTLP600CBTR at 3.8V. This 0.3V difference is within standard circuit design tolerances for LED indicator applications and does not require circuit redesign. Existing current-limiting resistor values will function with the substitute component.

Q: How does the increased brightness of the NTE30019 (52mcd vs. 20mcd) affect compatibility?

A: The higher luminous intensity of the NTE30019 is compatible with applications designed for the original component. The substitute will provide enhanced visibility without adverse effects. If brightness reduction is required for specific applications, circuit current can be reduced through resistor adjustment.

Q: Are there any height clearance concerns with the NTE30019?

A: No. The NTE30019 maximum height of 0.75mm is 0.05mm lower than the original QTLP600CBTR at 0.80mm. This provides improved clearance compatibility with existing PCB designs and enclosure constraints.

Q: What is the wavelength difference between 465nm and 470nm in practical application?

A: Both wavelengths fall within the blue spectrum and are visually indistinguishable for indication applications. The 5nm difference does not affect functional equivalence or color perception in LED indicator circuits.

Q: Does the wider 140° viewing angle of the NTE30019 create any compatibility issues?

A: No. The wider viewing angle is an enhancement that improves visibility from additional angles. Applications designed for the original 100° viewing angle will function without modification with the wider angle substitute.

Q: Are both components RoHS compliant?

A: Yes. Both the QTLP600CBTR and NTE30019 are ROHS3 compliant, satisfying equivalent environmental and regulatory requirements for electronic component manufacturing and use.

Q: What packaging format is the NTE30019 supplied in?

A: The NTE30019 is supplied in bag packaging, compared to the original component packaging format. Verify packaging requirements for your specific assembly process requirements.