VLRK31Q1R2-GS18 Equivalent & Substitute Parts

Part Overview

The VLRK31Q1R2-GS18 is a red 630nm LED indication component manufactured by Vishay Semiconductor Opto Division, designed for surface mount bottom entry applications. This part features a 2.1V forward voltage, 126mcd brightness rating, and clear lens with 120° viewing angle in a compact 2-SMD Z-Bend package. The component is currently listed as obsolete, making identification of active equivalent parts essential for ongoing production and design continuity.

Substiute Parts

VLRK31Q1R2-GS18

Vishay Semiconductor Opto DivisionIn Stock: 981VLRK31Q1R2-GS18 Datasheet

Current PartRFQ

VLRK31Q1R2-GS08

Vishay Semiconductor Opto DivisionIn Stock: 14837VLRK31Q1R2-GS08 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The VLRK31Q1R2-GS08 qualifies as a parametric equivalent to the VLRK31Q1R2-GS18 based on the following criteria:

Electrical Parameters Match:

• Wavelength - Dominant: 630nm (identical)
• Voltage - Forward (Vf) (Typ): 2.1V (identical)
• Current - Test: 20mA (identical)
• Millicandela Rating: 126mcd (identical)
• Viewing Angle: 120° (identical)

Mechanical Parameters Match:

• Lens Size: 2.40mm Dia (identical)
• Mounting Type: Surface Mount, Bottom Entry (identical)
• Package / Case: 2-SMD, Z-Bend (identical)
• Size / Dimension: 3.20mm L x 2.80mm W (identical)
• Height (Max): 2.10mm (identical)

Compliance Parameters Match:

• RoHS Status: ROHS3 Compliant (identical)
• Moisture Sensitivity Level (MSL): 2A (4 Weeks) (identical)

The primary difference is packaging format: VLRK31Q1R2-GS18 uses standard packaging, while VLRK31Q1R2-GS08 is supplied in Tape & Reel (TR) format. Additionally, VLRK31Q1R2-GS08 maintains active product status with significantly higher inventory availability.

Parameter Comparison

Engineering Selection Recommendations

The VLRK31Q1R2-GS08 is the direct parametric equivalent for the obsolete VLRK31Q1R2-GS18. Selection between these parts should be based on the following factors:

For New Designs or Production Transitions: Use VLRK31Q1R2-GS08. This part maintains active product status with Vishay, ensuring long-term availability and supply chain continuity. Both parts carry identical ROHS3 compliance and MSL ratings, confirming environmental and handling requirement equivalence.

Packaging Consideration: The VLRK31Q1R2-GS08 is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly. If bulk quantities are required, this packaging format provides operational efficiency in automated pick-and-place processes.

Inventory and Lead Time: The VLRK31Q1R2-GS08 demonstrates significantly higher inventory availability (14789 Pcs vs. 913 Pcs), reducing procurement risk and lead time variability.

Frequently Asked Questions (FAQ)

Q: Can VLRK31Q1R2-GS08 be used as a direct replacement for VLRK31Q1R2-GS18 in existing designs?

A: Yes. Both parts are electrically and mechanically identical across all specified parameters: 630nm wavelength, 2.1V forward voltage, 126mcd brightness, 120° viewing angle, and identical physical dimensions. The only difference is packaging format (Tape & Reel vs. standard), which does not affect component performance or PCB integration.

Q: What is the significance of the packaging format difference?

A: The VLRK31Q1R2-GS18 uses standard packaging, while VLRK31Q1R2-GS08 is supplied in Tape & Reel (TR) format. Tape & Reel packaging is optimized for automated surface mount assembly and is the industry standard for high-volume production. Both formats contain identical components.

Q: Are there compliance differences between these parts?

A: No. Both parts carry identical ROHS3 compliance certification and MSL 2A (4 Weeks) moisture sensitivity ratings. They meet the same environmental and handling requirements.

Q: Why is VLRK31Q1R2-GS18 listed as obsolete?

A: The VLRK31Q1R2-GS18 has been superseded by the VLRK31Q1R2-GS08 in Vishay's product portfolio. The active equivalent part maintains all electrical and mechanical specifications while offering improved supply chain availability.

Q: What are the key parameters that determine substitution eligibility?

A: Substitution is determined by matching: wavelength (630nm), forward voltage (2.1V), test current (20mA), brightness rating (126mcd), viewing angle (120°), lens size (2.40mm), mounting type (Surface Mount, Bottom Entry), package type (2-SMD Z-Bend), physical dimensions (3.20mm L x 2.80mm W x 2.10mm H max), and compliance certifications (ROHS3, MSL 2A).