VLMP31G2J1-GS18 Equivalent & Substitute Parts

Part Overview

The VLMP31G2J1-GS18 is a green 560nm LED indication component manufactured by Vishay Semiconductor Opto Division in the VLM.3 series. This surface mount 2-PLCC package LED operates at 2.1V forward voltage with a 4mcd brightness rating and 120° viewing angle. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Substiute Parts

VLMP31G2J1-GS18

Vishay Semiconductor Opto DivisionIn Stock: 714VLMP31G2J1-GS18 Datasheet

Current PartRFQ

VLMP3100-GS08

Vishay Semiconductor Opto DivisionIn Stock: 1089VLMP3100-GS08 Datasheet

Parametric EquivalentRFQ

VLMP31G2J1-GS08

Vishay Semiconductor Opto DivisionIn Stock: 833VLMP31G2J1-GS08 Datasheet

Parametric EquivalentRFQ

67-21SUGC/S400-A4/TR8

Everlight Electronics Co LtdIn Stock: 83967-21SUGC/S400-A4/TR8 Datasheet

MFR RecommendedRFQ

67-21VGC/TR8

Everlight Electronics Co LtdIn Stock: 314467-21VGC/TR8 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the VLMP31G2J1-GS18 are classified based on the following substitution criteria:

Parametric Equivalents maintain identical or functionally equivalent electrical and mechanical specifications:

• Forward voltage (Vf): 2.1V
• Test current: 10mA
• Dominant wavelength: 560nm
• Package type: 2-SMD, J-Lead (2-PLCC)
• Physical dimensions: 3.00mm L x 2.80mm W, 1.85mm height maximum
• Viewing angle: 120°
• Lens transparency: Clear
• Lens size: 2.40mm diameter

Manufacturer Recommended Alternatives provide functional substitution with allowable parameter variations for specific application requirements. These parts may differ in wavelength, forward voltage, brightness rating, or package form factor while maintaining surface mount compatibility and green LED indication functionality.

Parameter Comparison

Engineering Selection Recommendations

Parametric Equivalent Selection (Preferred for Direct Replacement)

VLMP3100-GS08 and VLMP31G2J1-GS08 are parametric equivalents from Vishay with active product status. Both maintain the 2.1V forward voltage, 10mA test current, 4mcd brightness, and 2-PLCC package form factor. VLMP31G2J1-GS08 matches the peak wavelength specification (565nm) of the main part. Both are available in Tape & Reel packaging and comply with ROHS3 standards. These parts provide direct functional substitution without circuit redesign.

Manufacturer Recommended Alternatives (Application-Dependent Selection)

67-21SUGC/S400-A4/TR8 (Everlight) operates at 3.3V forward voltage with significantly higher brightness (279mcd) and different dominant wavelength (525nm). This part requires circuit voltage adjustment and is suitable only for applications where increased brightness and different color perception are acceptable.

67-21VGC/TR8 (Everlight) maintains 2.1V forward voltage compatibility but uses a different package form (1411/3528 Metric) with reduced height (0.85mm) and diffused lens transparency. The dominant wavelength is 571nm with 25mcd brightness. This part is suitable for space-constrained applications where diffused lens characteristics are acceptable.

Frequently Asked Questions (FAQ)

Q: Can VLMP3100-GS08 directly replace VLMP31G2J1-GS18 without circuit modification?

A: Yes. VLMP3100-GS08 maintains identical forward voltage (2.1V), test current (10mA), brightness rating (4mcd), viewing angle (120°), and 2-PLCC package dimensions. The only difference is packaging format (Tape & Reel vs. bulk), which does not affect electrical performance.

Q: What is the difference between VLMP3100-GS08 and VLMP31G2J1-GS08?

A: Both are parametric equivalents with identical electrical specifications. The primary difference is peak wavelength: VLMP3100-GS08 has 555nm peak wavelength while VLMP31G2J1-GS08 has 565nm peak wavelength. VLMP31G2J1-GS08 more closely matches the original part's wavelength specification.

Q: Can 67-21SUGC/S400-A4/TR8 be used as a direct substitute?

A: No. This part requires circuit redesign due to 3.3V forward voltage (versus 2.1V) and 20mA test current (versus 10mA). Additionally, the dominant wavelength is 525nm (versus 560nm), resulting in a different green color perception. Use only if application requirements permit these changes.

Q: Is 67-21VGC/TR8 compatible with the original PCB layout?

A: Partial compatibility exists. While 67-21VGC/TR8 maintains 2.1V forward voltage, it uses a different package form (1411/3528 Metric) with different footprint dimensions (4.60mm L x 2.80mm W versus 3.00mm L x 2.80mm W) and significantly reduced height (0.85mm versus 1.85mm). PCB layout modification is required. Additionally, the diffused lens transparency differs from the original clear lens.

Q: Why is the original VLMP31G2J1-GS18 marked as obsolete?

A: Product obsolescence is determined by the manufacturer. Active alternatives from the same manufacturer (VLMP3100-GS08 and VLMP31G2J1-GS08) provide equivalent functionality and are recommended for new designs and production continuity.

Q: What compliance certifications apply to substitute parts?

A: Vishay parametric equivalents (VLMP3100-GS08 and VLMP31G2J1-GS08) are ROHS3 compliant with 2A Moisture Sensitivity Level (4 Weeks). Everlight alternatives (67-21SUGC/S400-A4/TR8 and 67-21VGC/TR8) have compliance information not specified in available documentation.