LED QBHP687-IWH-CW Equivalent & Substitute Parts

Part Overview

The QBHP687-IWH-CW is a cool white SMD LED manufactured by QT Brightek (QTB), designed for surface mount applications requiring 6020K color temperature illumination. This component operates at 3.3V forward voltage with a typical test current of 150mA, delivering 50 lumens at 25°C. The device features a 4-SMD package with flat lead exposed pad configuration, measuring 5.30mm × 3.00mm with a maximum seated height of 0.97mm.

The QBHP687-IWH-CW is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

QBHP687-IWH-CW

QT Brightek (QTB)In Stock: 925QBHP687-IWH-CW Datasheet

Current PartRFQ

QBHP686-IWH-CW

QT Brightek (QTB)In Stock: 1216QBHP686-IWH-CW Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the QBHP687-IWH-CW is determined by the following critical parameters:

Color Temperature & Spectral Match: The substitute must operate within the 5300K–7050K range to maintain cool white color consistency. Both the main part and substitute must deliver the same CCT classification.

Electrical Compatibility: Forward voltage and test current specifications must align with circuit design requirements. The substitute must operate safely within the maximum current rating of the receiving circuit.

Luminous Output: Flux output and luminous efficacy determine brightness performance. Substitutes must deliver comparable light output to maintain functional equivalence in the application.

Color Rendering Index (CRI): CRI value of 80 establishes the color fidelity requirement. Substitutes must meet or exceed this specification.

Package & Mounting: Surface mount package type and physical dimensions must be compatible with PCB layout and reflow soldering processes. Dimensional compatibility ensures proper placement and thermal performance.

Moisture Sensitivity Level (MSL): MSL 3 rating indicates storage and handling requirements. Substitutes must meet equivalent or superior moisture sensitivity specifications.

The QBHP686-IWH-CW qualifies as a substitute based on matching color temperature range, surface mount configuration, MSL rating, and electrical operating parameters within acceptable tolerance.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The QBHP687-IWH-CW is classified as obsolete, indicating discontinued manufacturing and limited future availability. The QBHP686-IWH-CW maintains active product status with confirmed inventory (1137 Pcs), ensuring reliable supply for ongoing production and future orders.

Compliance & Certification: The QBHP686-IWH-CW carries ROHS3 compliance and REACH unaffected status certifications. These regulatory qualifications support use in applications subject to environmental and hazardous substance restrictions.

Electrical Operating Point: Both components operate at 150mA test current with matched color temperature specifications. The QBHP686-IWH-CW operates at 3.2V typical forward voltage compared to 3.3V for the main part, representing a 0.1V reduction. This minor voltage difference is within typical circuit tolerance and does not require design modification.

Luminous Performance: The QBHP686-IWH-CW delivers 61 lumens at 25°C versus 50 lumens for the QBHP687-IWH-CW, representing a 22% increase in light output. Luminous efficacy improves from 101 lm/W to 127 lm/W. These performance gains are beneficial for applications requiring equivalent or enhanced brightness.

Package & Physical Dimensions: The QBHP686-IWH-CW uses a 1113 (2835 Metric) package measuring 3.20mm × 2.80mm, smaller than the 4-SMD 5.30mm × 3.00mm footprint of the main part. PCB layout modification is required to accommodate the different package geometry. Maximum seated height differs by 0.03mm (0.97mm vs. 1.00mm), which is negligible for most applications.

Selection Criteria: Select the QBHP686-IWH-CW when PCB layout can accommodate the smaller 2835 package footprint and when active product availability is prioritized. Verify PCB design compatibility before implementation.

Frequently Asked Questions (FAQ)

Q: Can the QBHP686-IWH-CW directly replace the QBHP687-IWH-CW without PCB modification?

A: No. The QBHP686-IWH-CW uses a 1113 (2835 Metric) package measuring 3.20mm × 2.80mm, while the QBHP687-IWH-CW uses a 4-SMD package measuring 5.30mm × 3.00mm. PCB footprint redesign is required. The components are not pin-compatible without layout changes.

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

A: The QBHP686-IWH-CW operates at 3.2V typical forward voltage compared to 3.3V for the QBHP687-IWH-CW. This 0.1V difference falls within standard circuit tolerance and does not require design modification for most applications. Verify that your current-limiting resistor or driver circuit can accommodate this minor variation.

Q: Does the QBHP686-IWH-CW produce more light than the original part?

A: Yes. The QBHP686-IWH-CW delivers 61 lumens at 25°C compared to 50 lumens for the QBHP687-IWH-CW at the same 150mA test current. This represents a 22% increase in luminous output. Luminous efficacy also improves from 101 lm/W to 127 lm/W.

Q: Are the color temperature specifications identical?

A: Yes. Both components operate at 6020K cool white color temperature within the 5300K–7050K specification range. Color Rendering Index (CRI) is 80 for both parts, ensuring equivalent color fidelity.

Q: What are the moisture sensitivity requirements for storage and handling?

A: Both the QBHP687-IWH-CW and QBHP686-IWH-CW carry MSL 3 (Moisture Sensitivity Level 3) ratings with 168-hour floor life. Components must be stored in dry conditions and baked according to IPC-A-610 standards before reflow soldering if floor life is exceeded.

Q: Is the QBHP686-IWH-CW compliant with environmental regulations?

A: The QBHP686-IWH-CW is ROHS3 compliant and REACH unaffected. These certifications confirm compliance with European hazardous substance restrictions and support use in regulated applications.

Q: Why is the QBHP687-IWH-CW classified as obsolete?

A: Obsolete status indicates that QT Brightek has discontinued manufacturing of this component. The QBHP686-IWH-CW is the active replacement offering improved performance and regulatory compliance while maintaining functional equivalence in cool white LED applications.

Q: Can I use the QBHP686-IWH-CW in existing designs without testing?

A: PCB layout modification is mandatory due to package differences. After layout redesign, verify that reflow soldering parameters are appropriate for the 1113 (2835 Metric) package and that the 0.1V forward voltage difference does not affect circuit performance. Functional testing is recommended before production implementation.