SML-Z14UTT86A Equivalent & Substitute Parts

Part Overview

The SML-Z14UTT86A is a red 620nm LED indicator in 2-PLCC surface mount packaging, manufactured by Rohm Semiconductor. This discrete LED operates at 1.9V forward voltage with a 224mcd brightness rating and features a clear, round lens with flat top design. The component is actively produced and ROHS3 compliant, making it suitable for standard indication applications in consumer and industrial electronics. Equivalent parts may be required due to supply constraints, manufacturing discontinuation, or design optimization needs while maintaining functional compatibility.

Substiute Parts

SML-Z14UTT86A

Rohm SemiconductorIn Stock: 756SML-Z14UTT86A Datasheet

Current PartRFQ

QBLP670-R

QT Brightek (QTB)In Stock: 4664QBLP670-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SML-Z14UTT86A is determined by the following critical parameters:

Color and wavelength matching (red, 620nm dominant wavelength) ensure optical compatibility and consistent indication appearance across PCB assemblies. Package type (2-PLCC) and mounting method (surface mount) are mandatory for mechanical and electrical interface compatibility with existing PCB layouts. Lens geometry (round with flat top, 2.40mm diameter) must match to maintain optical performance and aesthetic consistency. Forward voltage (1.9V nominal) and test current (20mA) define the electrical operating point; substitutes within acceptable tolerance ranges preserve circuit functionality without requiring redesign. Brightness rating (224mcd) establishes the minimum luminous intensity for indication visibility. Physical dimensions (3.20mm L x 2.80mm W, 2.05mm max height) confirm PCB footprint compatibility. Compliance certifications (ROHS3) verify regulatory alignment for target markets.

The QBLP670-R from QT Brightek qualifies as a direct substitute based on matching color, wavelength, package, mounting type, lens style, lens size, test current, and physical dimensions within acceptable engineering tolerances.

Parameter Comparison

Engineering Selection Recommendations

The QBLP670-R is functionally equivalent to the SML-Z14UTT86A for direct substitution in 2-PLCC red LED indication circuits. Both components share identical package geometry, mounting interface, optical wavelength, and regulatory compliance status (ROHS3). The forward voltage differential (1.9V vs. 2V) is within standard LED tolerance ranges and does not require circuit modification for typical current-limiting resistor designs. The brightness differential (224mcd vs. 230mcd) is negligible for indication applications. Both components maintain active product status with established supply chains. Selection between these parts should be based on availability, lead time, and cost considerations rather than technical performance differences.

Frequently Asked Questions (FAQ)

Q: Can QBLP670-R replace SML-Z14UTT86A in existing designs without PCB modification?

A: Yes. Both components use identical 2-PLCC packaging with matching footprints (3.20mm L x 2.80mm W). No PCB layout changes are required.

Q: What is the significance of the 0.1V forward voltage difference between these parts?

A: The 1.9V to 2V difference is within standard LED manufacturing tolerance and does not require circuit redesign. Current-limiting resistor values calculated for 1.9V operation remain valid for 2V operation in typical indication circuits.

Q: Are there viewing angle differences that affect optical performance?

A: The QBLP670-R specifies a 120° viewing angle, while the SML-Z14UTT86A does not provide this specification. Both use identical round lens geometry with flat top design, indicating comparable optical characteristics suitable for standard indication applications.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both components are ROHS3 compliant and carry identical REACH and ECCN classifications (EAR99), confirming equivalent regulatory status for target markets.

Q: What is the moisture sensitivity difference between these parts?

A: SML-Z14UTT86A carries MSL 4 (72 hours), while QBLP670-R carries MSL 3 (168 hours). MSL 3 provides extended moisture protection, which is advantageous for storage and handling in humid environments.

Q: Can these parts be mixed in the same production batch?

A: Yes, provided the circuit design accommodates the 2V forward voltage specification. Both parts are mechanically and electrically compatible for mixed-lot assembly.