VLWR9931 Equivalent & Substitute Parts

Part Overview

The VLWR9931 is a red 615nm LED indication component manufactured by Vishay Semiconductor Opto Division, part of the TELUX™ series. This through-hole mounted discrete LED operates at 2.2V forward voltage with a 0.7mcd brightness rating and 90° viewing angle. The component is currently obsolete, making equivalent substitute parts necessary for ongoing design support and production continuity. Active alternatives within the same electrical and mechanical specifications are available to maintain circuit functionality and performance characteristics.

Substiute Parts

VLWR9931

Vishay Semiconductor Opto DivisionIn Stock: 1212VLWR9931 Datasheet

Current PartRFQ

VLWR9930

Vishay Semiconductor Opto DivisionIn Stock: 2898VLWR9930 Datasheet

Parametric EquivalentRFQ

VLWR9932

Vishay Semiconductor Opto DivisionIn Stock: 835VLWR9932 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the VLWR9931 are determined by strict equivalence across the following critical parameters:

• Electrical Characteristics: Forward voltage (2.2V), test current (70mA), wavelength specifications (615nm dominant, 624nm peak), and brightness rating (0.7mcd)
• Optical Properties: Red color, clear lens transparency, round domed lens style, and 90° viewing angle
• Mechanical Compatibility: Through-hole mounting, 4-DIP package format (0.200", 5.08mm), and identical physical dimensions (7.62mm L x 7.62mm W, 6.41mm max height)
• Regulatory Compliance: ROHS3 compliance, REACH unaffected status, and MSL rating of 1

The VLWR9930 and VLWR9932 are parametric equivalents that maintain all specified electrical, optical, and mechanical characteristics. Both substitute parts are manufactured by Vishay Semiconductor Opto Division within the same TELUX™ series and are currently in active production status, providing long-term availability compared to the obsolete VLWR9931.

Parameter Comparison

Engineering Selection Recommendations

Both VLWR9930 and VLWR9932 are direct parametric equivalents to the obsolete VLWR9931. Selection between these active alternatives should be based on availability and supply chain considerations:

VLWR9930: Currently maintains the highest inventory level at 2810 pieces in stock, providing optimal supply continuity for production requirements.

VLWR9932: Available with 739 pieces in stock, suitable for applications where primary supply sources are constrained.

Both substitute parts maintain full ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment with the original VLWR9931 specification. The identical electrical characteristics, optical properties, and mechanical dimensions guarantee direct functional replacement without circuit redesign or board layout modification.

Frequently Asked Questions (FAQ)

Q: Can VLWR9930 and VLWR9932 be used interchangeably with VLWR9931?

A: Yes. Both substitute parts are parametric equivalents with identical electrical specifications (2.2V forward voltage, 70mA test current), optical characteristics (615nm dominant wavelength, 0.7mcd brightness, 90° viewing angle), and mechanical dimensions (4-DIP package, 7.62mm x 7.62mm x 6.41mm). Direct substitution requires no circuit modifications.

Q: What is the primary difference between VLWR9930 and VLWR9932?

A: The electrical and mechanical specifications are identical. The primary difference is inventory availability: VLWR9930 has 2810 units in stock, while VLWR9932 has 739 units. Both are active products from Vishay Semiconductor Opto Division.

Q: Are the substitute parts compatible with existing PCB designs for VLWR9931?

A: Yes. The substitute parts maintain the same 4-DIP (0.200", 5.08mm) package format and identical physical dimensions (7.62mm L x 7.62mm W, 6.41mm max height), ensuring direct compatibility with existing through-hole PCB layouts without modification.

Q: Do the substitute parts meet the same regulatory requirements as VLWR9931?

A: Yes. Both VLWR9930 and VLWR9932 are ROHS3 compliant and REACH unaffected, matching the regulatory status of the original VLWR9931. Moisture sensitivity level remains at MSL 1 (Unlimited) for all three parts.

Q: Why is VLWR9931 listed as obsolete?

A: The VLWR9931 has been discontinued by Vishay Semiconductor Opto Division. The active alternatives VLWR9930 and VLWR9932 provide equivalent functionality and are recommended for new designs and production continuity.