QBLP653-Y Yellow LED SMD Equivalent & Substitute Parts

Part Overview

The QBLP653-Y is an active-status yellow LED indicator manufactured by QT Brightek, designed for surface mount applications in discrete indication circuits. This component operates at 2V forward voltage with a 590nm dominant wavelength and delivers 3400mcd luminous intensity. The part is packaged in 1208 format (3224 Metric) with RoHS3 compliance and MSL 3 moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers while accommodating application-specific requirements.

Substiute Parts

QBLP653-Y

QT Brightek (QTB)In Stock: 1555QBLP653-Y Datasheet

Current PartRFQ

APD3224SECK-F01

KingbrightIn Stock: 40487APD3224SECK-F01 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the QBLP653-Y are identified based on the following criteria:

Mechanical Compatibility: Surface mount packaging with compatible footprint dimensions (3.20mm L x 2.40mm W nominal), allowing direct PCB placement without redesign.

Electrical Compatibility: Forward voltage within acceptable operating range (1.9V to 2.2V typical), test current at 20mA, and luminous intensity sufficient for indication applications (1600mcd minimum).

Regulatory Compliance: RoHS3 compliance and MSL 3 rating maintained across all substitute candidates.

Optical Characteristics: Clear lens transparency and round domed lens style preserved; wavelength in the yellow-orange spectrum (590nm to 610nm dominant wavelength range).

Availability & Status: Active product status with current manufacturing and distribution.

The APD3224SECK-F01 meets these substitution criteria with documented compatibility in the provided parameter set.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (QBLP653-Y): Maintain original specification when yellow 590nm wavelength is a functional requirement, 3400mcd brightness is necessary for application visibility, and 15° narrow viewing angle is specified for the circuit design.

Substitute Selection (APD3224SECK-F01): The Kingbright APD3224SECK-F01 is electrically and mechanically compatible when the following conditions are met: (1) orange 601nm wavelength is acceptable for the indication function, (2) 1600mcd luminous intensity satisfies visibility requirements, (3) 20° wider viewing angle does not conflict with application constraints, and (4) 0.1V higher forward voltage (2.1V vs 2.0V) is accommodated in circuit design.

Both parts maintain RoHS3 compliance, MSL 3 rating, and active product status. Footprint compatibility is confirmed across both 1209 and 1210 metric packages with identical 3.20 x 2.40mm dimensions. The 0.20mm height difference (2.60mm vs 2.40mm) presents no mechanical conflict in standard PCB assembly.

Frequently Asked Questions (FAQ)

Q: Can APD3224SECK-F01 be used as a direct replacement for QBLP653-Y without PCB modification?

A: Yes, mechanical substitution is direct. Both parts share identical footprint dimensions (3.20 x 2.40mm) and surface mount packaging. The APD3224SECK-F01 is 0.20mm shorter in height, which does not require PCB redesign. However, functional compatibility depends on whether orange wavelength (601nm) and 1600mcd brightness are acceptable for your application.

Q: What is the voltage difference between these parts, and does it affect circuit design?

A: The APD3224SECK-F01 has 2.1V forward voltage compared to 2.0V for the QBLP653-Y, a 0.1V difference. This falls within typical LED circuit tolerance and does not require current-limiting resistor recalculation in standard indication circuits. Verify your specific circuit design if operating near voltage limits.

Q: Why does the substitute have lower brightness (1600mcd vs 3400mcd)?

A: The APD3224SECK-F01 is specified at 1600mcd, approximately 47% of the QBLP653-Y brightness. This difference is inherent to the Kingbright design. Substitution is valid only if application visibility requirements are met at 1600mcd. For high-brightness indication requirements, the original QBLP653-Y is recommended.

Q: Are both parts RoHS3 compliant and suitable for regulated applications?

A: Yes. Both QBLP653-Y and APD3224SECK-F01 are RoHS3 compliant with MSL 3 moisture sensitivity rating. Both are REACH unaffected and classified under ECCN EAR99 and HTSUS 8541.41.0000. Regulatory substitution is valid.

Q: What is the difference between 1209 and 1210 package designations?

A: The QBLP653-Y uses 1209 (3224 Metric) and the APD3224SECK-F01 uses 1210 (3225 Metric). These are similar metric SMD packages with identical footprint dimensions (3.20 x 2.40mm). The designation difference reflects minor internal construction variations that do not affect PCB placement or reflow compatibility.

Q: Can I use the wider 20° viewing angle of the substitute in place of the 15° angle?

A: Yes, mechanically and electrically. The wider 20° viewing angle of APD3224SECK-F01 provides broader light distribution. This is compatible with applications where the original 15° narrow angle was not a critical constraint. If narrow-angle directional indication is required, the original QBLP653-Y is specified.