VLMW51Q2R3-GS08 LED White Power SMD Equivalent & Substitute Parts

Part Overview

The VLMW51Q2R3-GS08 is a white power LED manufactured by Vishay Semiconductor Opto Division, designed for surface mount applications in the 1414 (3535 Metric) package format. This component delivers 36 lumens at 150mA test current with a forward voltage of 3.4V and 120° viewing angle. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing design requirements and production continuity.

Substiute Parts

VLMW51Q2R3-GS08

Vishay Semiconductor Opto DivisionIn Stock: 836VLMW51Q2R3-GS08 Datasheet

Current PartRFQ

XTEAWT-00-0000-000000EE7

CreeLED, Inc.In Stock: 2158XTEAWT-00-0000-000000EE7 Datasheet

MFR RecommendedRFQ

XTEAWT-00-0000-000000FE1

CreeLED, Inc.In Stock: 1704XTEAWT-00-0000-000000FE1 Datasheet

MFR RecommendedRFQ

XTEAWT-00-0000-000000HE1

CreeLED, Inc.In Stock: 824XTEAWT-00-0000-000000HE1 Datasheet

MFR RecommendedRFQ

XTEAWT-00-0000-000000HE2

CreeLED, Inc.In Stock: 1113XTEAWT-00-0000-000000HE2 Datasheet

MFR RecommendedRFQ

XTEAWT-00-0000-00000BGE2

CreeLED, Inc.In Stock: 1000011XTEAWT-00-0000-00000BGE2 Datasheet

MFR RecommendedRFQ

XTEAWT-00-0000-00000HEE5

CreeLED, Inc.In Stock: 999XTEAWT-00-0000-00000HEE5 Datasheet

MFR RecommendedRFQ

XTEAWT-00-0000-00000HGE3

CreeLED, Inc.In Stock: 1427XTEAWT-00-0000-00000HGE3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VLMW51Q2R3-GS08 is determined by the following critical parameters:

Mechanical Compatibility:

• Package / Case: 1414 (3535 Metric) — all substitute parts must use identical package format
• Mounting Type: Surface Mount — maintains PCB assembly compatibility
• Size / Dimension: Approximately 0.136" L x 0.136" W (3.45mm x 3.45mm) — functionally equivalent to original 4.60mm x 4.60mm
• Height - Seated (Max): Substitute parts at 0.100" (2.54mm) are taller than original 0.055" (1.40mm) — requires clearance verification

Electrical Compatibility:

• Voltage - Forward (Vf) (Typ): Substitute parts operate at 2.85V, lower than original 3.4V — requires circuit redesign for current limiting
• Current - Test: Substitute parts rated at 350mA test current, higher than original 150mA — enables higher luminous output
• Current - Max: Substitute parts rated at 1.5A maximum current — provides operational flexibility

Optical Performance:

• Color: All substitute parts are white LEDs — maintains color specification
• Viewing Angle: Substitute parts at 115° are slightly narrower than original 120° — acceptable for most applications
• Lumens/Watt: Substitute parts range from 118 to 144 lm/W, significantly higher than original 71 lm/W — improved efficiency

Regulatory & Compliance:

• RoHS Status: All substitute parts are RoHS Compliant — meets environmental requirements
• REACH Status: All substitute parts are REACH Unaffected — maintains regulatory compliance

Parameter Comparison

Engineering Selection Recommendations

All substitute parts listed are manufactured by CreeLED, Inc. and hold active product status, ensuring long-term availability and supply chain continuity. Each substitute part maintains the 1414 (3535 Metric) package format and surface mount configuration, providing mechanical compatibility with existing PCB designs.

The CreeLED XLamp® XT-E series substitute parts deliver superior thermal performance with thermal resistance of 5°C/W compared to the original 45°C/W, enabling improved heat dissipation and extended operational life. All substitute parts are RoHS Compliant and REACH Unaffected, meeting current environmental and regulatory requirements.

Selection among substitute parts depends on color temperature requirements and application-specific luminous output needs. The XTEAWT-00-0000-00000BGE2 offers the highest inventory availability at 1,000,000 pieces and includes CRI (Color Rendering Index) specification of 70, suitable for applications requiring color accuracy. The XTEAWT-00-0000-000000HE1 and XTEAWT-00-0000-000000HE2 deliver the highest luminous efficiency at 144 lm/W, appropriate for power-constrained applications.

Circuit redesign is required due to the 0.55V reduction in forward voltage (3.4V to 2.85V) and the increase in test current from 150mA to 350mA. PCB layout must accommodate the increased height of 0.100" (2.54mm) versus the original 0.055" (1.40mm) to ensure component clearance.

Frequently Asked Questions (FAQ)

Q: Can the VLMW51Q2R3-GS08 be directly replaced with any of the listed substitute parts without circuit modification?

A: No. The substitute parts operate at 2.85V forward voltage compared to the original 3.4V, requiring adjustment of current-limiting resistor values in the circuit. The increased test current of 350mA versus 150mA also necessitates power supply and thermal management review.

Q: What is the primary reason for substitution?

A: The VLMW51Q2R3-GS08 is classified as obsolete. The CreeLED XLamp® XT-E series substitute parts are active products with confirmed long-term availability and supply chain support.

Q: Are all substitute parts mechanically compatible with the original PCB footprint?

A: The substitute parts use the same 1414 (3535 Metric) package and surface mount configuration. However, the increased height of 0.100" (2.54mm) versus 0.055" (1.40mm) requires clearance verification in the PCB assembly. Dimensional differences of 0.002" in length and width (4.60mm to 3.45mm) are within standard PCB tolerance.

Q: Which substitute part offers the best thermal performance?

A: All CreeLED XLamp® XT-E substitute parts feature thermal resistance of 5°C/W, providing nine times better thermal performance than the original 45°C/W specification.

Q: What color temperature options are available?

A: Substitute parts are available in warm white (3000K), neutral white (4000K), and cool white (5000K, 5700K, 6500K) options. The original VLMW51Q2R3-GS08 did not specify color temperature.

Q: Which substitute part has the highest luminous efficiency?

A: The XTEAWT-00-0000-000000HE1 and XTEAWT-00-0000-000000HE2 both deliver 144 lm/W, compared to the original 71 lm/W.

Q: Is the reduced viewing angle of 115° versus 120° a significant limitation?

A: The 5° reduction in viewing angle is minor and acceptable for most applications. Specific optical design requirements should be evaluated against application specifications.

Q: What is the impact of the forward voltage reduction on circuit design?

A: The 0.55V reduction (3.4V to 2.85V) decreases the voltage drop across the LED. Current-limiting resistor values must be recalculated to maintain the desired operating current. For a given supply voltage, the resistor value will decrease proportionally.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. All listed substitute parts are RoHS Compliant and REACH Unaffected, meeting current environmental and regulatory standards equivalent to the original ROHS3 Compliant specification.