SMP6-UWDN Equivalent & Substitute Parts

Part Overview

The SMP6-UWDN is a white/neutral 5500K LED indication component manufactured by Bivar Inc., configured as a discrete 3.3V 6-SMD J-Lead surface mount device. This part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The component features a 4mm diffused round lens with flat top, 4000mcd brightness rating, and 140° viewing angle, suitable for indicator applications requiring neutral white illumination.

Substiute Parts

SMP6-UWDN

Bivar Inc.In Stock: 853SMP6-UWDN Datasheet

Current PartRFQ

SMTL6-UWDN

Bivar Inc.In Stock: 1589SMTL6-UWDN Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMP6-UWDN is determined by strict alignment across the following critical parameters:

Optical Parameters: Color (White, Neutral), dominant wavelength (5500K), and millicandela rating (4000mcd) must match exactly to ensure equivalent visual output and application suitability.

Electrical Parameters: Forward voltage (Vf) and test current must be compatible with existing circuit designs. Variations in these parameters require circuit redesign and are not acceptable for direct substitution.

Mechanical Parameters: Lens size (4.00mm diameter), package type (6-SMD J-Lead), and mounting configuration (surface mount) must be identical to ensure PCB compatibility without layout modifications.

Physical Dimensions: Overall footprint (5.00mm L x 5.00mm W) and maximum height (1.50mm) must accommodate existing PCB space allocations.

Environmental Compliance: Moisture sensitivity level (MSL 4) and regulatory classifications (ECCN, HTSUS) establish handling and shipping requirements.

The SMTL6-UWDN qualifies as a direct substitute based on matching optical, mechanical, and electrical core parameters, with documented variations noted in the parameter comparison table.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: SMTL6-UWDN is the direct manufacturer substitute for the obsolete SMP6-UWDN. Both components are manufactured by Bivar Inc. and share identical optical and electrical core specifications (color, wavelength, brightness, current rating, and package type).

Documented Variations: The SMTL6-UWDN exhibits three measurable differences from the main part:

1. Forward voltage is 0.3V lower (3V vs. 3.3V), which reduces power dissipation and may improve circuit efficiency in applications with voltage regulation.

2. Physical dimensions are marginally larger (5.40mm L vs. 5.00mm L; 1.60mm H vs. 1.50mm H), requiring verification of PCB layout clearances in space-constrained applications.

3. Packaging is supplied as Tape & Reel (TR), which is standard for active production components and facilitates automated assembly.

Compliance Status: The SMTL6-UWDN is active production, ROHS3 compliant, and REACH unaffected, meeting current regulatory requirements. The obsolete SMP6-UWDN lacks documented compliance certifications.

Selection Criteria: Choose SMTL6-UWDN when PCB layout accommodates the dimensional variations and circuit design accepts the lower forward voltage. Verify mechanical fit and electrical performance in prototype testing before full production transition.

Frequently Asked Questions (FAQ)

Q: Can SMTL6-UWDN be used as a direct drop-in replacement for SMP6-UWDN?

A: SMTL6-UWDN is functionally equivalent for optical output and electrical operation. However, the 0.4mm increase in length and 0.1mm increase in height require PCB layout verification. The 0.3V lower forward voltage is compatible with most circuit designs but should be confirmed in applications with tight voltage tolerances.

Q: What is the significance of the forward voltage difference (3.3V vs. 3V)?

A: The SMTL6-UWDN operates at 3V typical forward voltage compared to 3.3V for the SMP6-UWDN. This 0.3V reduction decreases power dissipation and may improve efficiency. Circuits designed for 3.3V operation will function with the 3V component, as the difference falls within normal LED operating tolerances. Verify circuit performance if voltage regulation is critical.

Q: Are the physical dimension variations significant?

A: The SMTL6-UWDN is 0.4mm longer (5.40mm vs. 5.00mm) and 0.1mm taller (1.60mm vs. 1.50mm). These variations are minor but must be checked against PCB layout constraints, particularly in high-density designs or applications with limited clearance above the component.

Q: Why is SMTL6-UWDN supplied in Tape & Reel packaging?

A: Tape & Reel (TR) is the standard packaging format for active production components and is optimized for automated assembly processes. This packaging improves handling efficiency and cost-effectiveness compared to alternative formats.

Q: What compliance certifications apply to SMTL6-UWDN?

A: SMTL6-UWDN is ROHS3 compliant and REACH unaffected. Both components share identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications. The substitute meets current regulatory requirements for electronic component distribution and use.

Q: Is prototype testing required before production transition?

A: Verification of mechanical fit (PCB layout clearance) and electrical performance (forward voltage in circuit operation) is recommended before full production transition, particularly in applications with space constraints or voltage-sensitive designs.