LED LUXEON Q L1Q0-4070000001500 Equivalent & Substitute Parts

Part Overview

The L1Q0-4070000001500 is a LUXEON Q series white neutral LED (4000K) in a 3535 metric package designed for surface mount applications. This component has reached obsolete product status, necessitating identification of functionally equivalent alternatives that maintain compatibility with existing designs while offering improved availability and performance characteristics.

Key Parameters

Parameter	Value
Manufacturer Part Number	L1Q0-4070000001500
Manufacturer	Lumileds
Series	LUXEON Q
Product Status	Obsolete
Color	White, Neutral
CCT (K)	4000K 3-Step MacAdam Ellipse
Flux @ 85°C, Current - Test	313 lm (Typ)
Current - Test	1A
Voltage - Forward (Vf) (Typ)	2.99V
Lumens/Watt @ Current - Test	104 lm/W
CRI (Color Rendering Index)	70
Current - Max	1.05A
Viewing Angle	135°
Mounting Type	Surface Mount
Package / Case	1414 (3535 Metric)
Size / Dimension	0.136" L x 0.136" W (3.45mm x 3.45mm)
Height - Seated (Max)	0.089" (2.25mm)
Thermal Resistance of Package	7°C/W
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitute parts for the L1Q0-4070000001500 are selected based on the following critical parameters:

Color Temperature: 4000K neutral white (primary functional requirement)
Color Rendering Index (CRI): 70 (maintains color accuracy specification)
Mounting Type: Surface mount (PCB assembly compatibility)
Regulatory Compliance: RoHS3 and REACH compliance (environmental and safety standards)
Forward Voltage Range: 2.8V to 2.99V (circuit design compatibility)
Maximum Current Rating: Minimum 1.05A (thermal and electrical safety)

The identified substitutes maintain these core parameters while offering improved efficiency, thermal performance, or enhanced availability compared to the obsolete L1Q0-4070000001500.

Parameter Comparison

Parameter	L1Q0-4070000001500 (Main)	L1T2-4070000000000 (Substitute)	XTEAWT-00-0000-00000BJE5 (Substitute)
Manufacturer	Lumileds	Lumileds	CreeLED, Inc.
Series	LUXEON Q	LUXEON TX	XLamp® XT-E
Product Status	Obsolete	Active	Active
Color	White, Neutral	White, Neutral	White, Neutral
CCT (K)	4000K 3-Step MacAdam Ellipse	4000K	4000K
Flux @ 85°C, Current - Test	313 lm (Typ)	269 lm (Typ)	152 lm (148-156 lm)
Current - Test	1A	700mA	350mA
Voltage - Forward (Vf) (Typ)	2.99V	2.8V	2.9V
Lumens/Watt @ Current - Test	104 lm/W	137 lm/W	150 lm/W
CRI (Color Rendering Index)	70	70	70
Current - Max	1.05A	1.5A	1.5A
Viewing Angle	135°	160°	115°
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Package / Case	1414 (3535 Metric)	2-SMD, No Lead Exposed Pad	1414 (3535 Metric)
Size / Dimension	0.136" L x 0.136" W (3.45mm x 3.45mm)	0.146" L x 0.146" W (3.70mm x 3.70mm)	0.136" L x 0.136" W (3.45mm x 3.45mm)
Height - Seated (Max)	0.089" (2.25mm)	0.083" (2.12mm)	0.100" (2.54mm)
Thermal Resistance of Package	7°C/W	3°C/W	5°C/W
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

L1T2-4070000000000 (LUXEON TX)

This Lumileds substitute maintains manufacturer continuity and offers active product status with improved thermal performance (3°C/W versus 7°C/W). The ROHS3 compliance and REACH unaffected status align with the original part's regulatory requirements. The 2-SMD package configuration differs from the original 1414 metric package, requiring PCB footprint verification. Forward voltage (2.8V) and CRI (70) remain compatible with existing circuit designs.

XTEAWT-00-0000-00000BJE5 (XLamp® XT-E)

This CreeLED substitute provides active product status with superior efficiency (150 lm/W versus 104 lm/W) and improved thermal characteristics (5°C/W versus 7°C/W). The package maintains the original 1414 (3535 metric) form factor, enabling direct PCB compatibility. Forward voltage (2.9V) and CRI (70) specifications align with design requirements. RoHS compliance and REACH unaffected status satisfy regulatory obligations.

Frequently Asked Questions (FAQ)

Q: Can the L1T2-4070000000000 be used as a direct replacement for the L1Q0-4070000001500?

A: The L1T2-4070000000000 maintains electrical compatibility (2.8V forward voltage, 70 CRI, 4000K color temperature) but uses a different package configuration (2-SMD versus 1414 metric). PCB footprint redesign is required.

Q: What are the key differences between the two substitute parts?

A: The L1T2-4070000000000 offers superior thermal performance (3°C/W) and efficiency (137 lm/W) but requires footprint modification. The XTEAWT-00-0000-00000BJE5 maintains the original 1414 package footprint while providing the highest efficiency (150 lm/W) and improved thermal characteristics (5°C/W).

Q: Are both substitute parts RoHS compliant?

A: Yes. The L1T2-4070000000000 is ROHS3 compliant. The XTEAWT-00-0000-00000BJE5 is RoHS compliant. Both meet environmental regulatory requirements.

Q: How do the viewing angles compare?

A: The original L1Q0-4070000001500 provides 135° viewing angle. The L1T2-4070000000000 offers 160° (wider distribution), while the XTEAWT-00-0000-00000BJE5 provides 115° (narrower distribution). Application requirements determine the appropriate selection.

Q: What is the impact of different thermal resistance values?

A: Lower thermal resistance improves heat dissipation. The L1T2-4070000000000 (3°C/W) and XTEAWT-00-0000-00000BJE5 (5°C/W) both provide superior thermal performance compared to the original L1Q0-4070000001500 (7°C/W), enabling higher operating efficiency and extended component life.

Q: Are forward voltage differences significant for circuit design?

A: Forward voltage differences (2.8V, 2.9V, 2.99V) are within typical LED operating ranges. Circuit designs using current-limiting resistors or constant current drivers accommodate these variations without modification.

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