Equivalent & Substitute Parts for R7AD

Part Overview

The R7AD is an amber LED indication component manufactured by Bivar Inc., designed for through-hole mounting applications requiring discrete 2V radial configuration. This LED features a diffused rectangular lens (7.00mm x 2.40mm) with 8mcd brightness rating and 120° viewing angle, optimized for amber light indication at 605nm peak wavelength.

The R7AD is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

R7AD

Bivar Inc.In Stock: 755R7AD Datasheet

Current PartRFQ

SSL-LX25783AD

Lumex Opto/Components Inc.In Stock: 835SSL-LX25783AD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the R7AD are identified based on strict alignment with the following critical parameters:

Mandatory Matching Parameters:

• Color: Amber
• Lens Transparency: Diffused
• Voltage - Forward (Vf): 2V
• Current - Test: 20mA
• Mounting Type: Through Hole
• Lens Style: Rectangle with Flat Top
• Wavelength - Peak: 605nm
• Package / Case: Radial
• Moisture Sensitivity Level: 1 (Unlimited)

Allowable Variation Parameters:

• Millicandela Rating: Substitutes may vary within acceptable brightness ranges for indication applications
• Lens Size: Minor dimensional variations acceptable if mechanical fit permits
• Viewing Angle: Variations acceptable if application does not require specific angular characteristics
• Height (Max): Variations acceptable if PCB clearance permits

The SSL-LX25783AD from Lumex Opto/Components Inc. qualifies as a direct substitute based on matching all mandatory parameters while maintaining functional equivalence for amber LED indication applications.

Parameter Comparison

Engineering Selection Recommendations

The SSL-LX25783AD is a qualified substitute for the R7AD based on the following engineering criteria:

Functional Equivalence: Both components operate at identical forward voltage (2V) and test current (20mA), ensuring direct circuit compatibility without modification to current-limiting resistor networks or power supply specifications.

Optical Characteristics: Both components emit amber light at 605nm peak wavelength with diffused lens transparency, maintaining consistent visual indication performance across applications.

Mechanical Compatibility: Both components feature radial through-hole mounting with rectangular flat-top lens geometry. Minor dimensional variations (lens size 7.00mm x 2.30mm versus 7.00mm x 2.40mm; height 8.00mm versus 7.70mm) are within acceptable tolerances for standard PCB assembly processes and do not affect functional performance in typical indication applications.

Product Status and Supply: The SSL-LX25783AD is classified as active production status with current inventory availability (779 pcs), addressing the supply discontinuation of the obsolete R7AD (727 pcs remaining stock).

Compliance: Both components carry identical moisture sensitivity level (MSL 1 - Unlimited), ECCN (EAR99), and HTSUS classification (8541.41.0000). The SSL-LX25783AD additionally carries ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements.

Performance Enhancement: The SSL-LX25783AD provides 10mcd brightness compared to the R7AD's 8mcd, offering improved visibility margin for indication applications without exceeding typical circuit design parameters.

Frequently Asked Questions (FAQ)

Q: Can the SSL-LX25783AD directly replace the R7AD without PCB modifications?

A: Yes. Both components share identical forward voltage (2V), test current (20mA), and radial through-hole mounting configuration. No circuit modifications are required. Minor dimensional variations do not affect standard PCB assembly processes.

Q: What is the significance of the 10mcd versus 8mcd brightness difference?

A: The SSL-LX25783AD provides 25% higher brightness output. For indication applications, this represents improved visibility margin and does not introduce compatibility issues. Applications requiring specific brightness levels should verify that 10mcd output remains within acceptable operating parameters.

Q: How do the lens size variations (7.00mm x 2.30mm versus 7.00mm x 2.40mm) affect mechanical fit?

A: The 0.10mm difference in the shorter dimension is within standard PCB tolerance ranges and does not affect mechanical fit in typical through-hole mounting applications. Verify clearance in applications with tight mechanical constraints.

Q: Does the 110° viewing angle of the SSL-LX25783AD versus 120° for the R7AD affect application performance?

A: The 10° reduction in viewing angle represents a narrower light distribution cone. For applications requiring specific angular characteristics, verify that 110° viewing angle meets visibility requirements. For standard indication applications, this variation is typically acceptable.

Q: What is the impact of the 8.00mm height versus 7.70mm on PCB clearance?

A: The 0.30mm height increase is minimal and does not affect standard PCB assembly. Verify clearance in applications with height-constrained mounting areas or where components are positioned near other tall components.

Q: Are there any compliance or regulatory differences between the two parts?

A: The SSL-LX25783AD carries ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. Both components share identical ECCN (EAR99) and HTSUS classification. The SSL-LX25783AD is the preferred choice for applications requiring current regulatory compliance documentation.

Q: What is the inventory status for each component?

A: The R7AD has 727 pcs remaining stock (obsolete status). The SSL-LX25783AD has 779 pcs available (active production status). For new designs or long-term production requirements, the SSL-LX25783AD is the recommended selection due to active production status and current availability.