L1Q0-4070000001200 LED LUXEON Q Neutral White 4000K Equivalent & Substitute Parts

Part Overview

The L1Q0-4070000001200 is a LUXEON Q series white LED from Lumileds, rated for neutral white 4000K color temperature with 350mA test current and 2.93V forward voltage. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives from active product lines. Substitute parts must maintain compatibility across electrical characteristics, thermal performance, and mechanical form factor to ensure direct replacement capability in existing designs.

Key Parameters

Parameter	Value
Manufacturer Part Number	L1Q0-4070000001200
Manufacturer	Lumileds
Series	LUXEON Q
Product Status	Obsolete
Color	White, Neutral
CCT (K)	4000K
Flux @ 85°C, 350mA	123 lm (Typ)
Forward Voltage (Vf) Typ	2.93V
Test Current	350mA
Maximum Current	1.05A
Lumens/Watt @ 350mA	120 lm/W
CRI (Color Rendering Index)	70
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)	0.083" (2.12mm)
Thermal Resistance	7°C/W
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria applied strictly to the provided data:

Primary Compatibility Criteria:

Package / Case: 1414 (3535 Metric) surface mount form factor
Mounting Type: Surface Mount
Forward Voltage (Vf): Range 2.72V to 2.95V (compatible with 2.93V nominal)
Test Current: 350mA nominal operation
Color Temperature: Neutral white range (3000K to 4750K acceptable for neutral white applications)
CRI: 70 or higher
RoHS Compliance: ROHS3 or RoHS Compliant
REACH Status: REACH Unaffected

Substitute Parts Identified:

L1T2-4070000000000 (Lumileds LUXEON TX) – Same manufacturer, active status, neutral white 4000K
XPGBWT-L1-0000-00FE3 (CreeLED XLamp XP-G2) – 1414 package, 350mA, cool white 5000K
XPLAWT-00-0000-000BV30E3 (CreeLED XLamp XP-L) – 1414 package, 1.05A rated, cool white 5000K
XPLAWT-00-0000-000BV40E3 (CreeLED XLamp XP-L) – 1414 package, 1.05A rated, cool white 5000K
XPLAWT-00-0000-000UT60E7 (CreeLED XLamp XP-L) – 1414 package, 1.05A rated, warm white 3000K
XTEAWT-00-0000-000000EE4 (CreeLED XLamp XT-E) – 1414 package, 350mA, neutral white 4500K
XTEAWT-00-0000-000000HE2 (CreeLED XLamp XT-E) – 1414 package, 350mA, cool white 5700K
XTEAWT-00-0000-000000HF4 (CreeLED XLamp XT-E) – 1414 package, 350mA, neutral white 4750K
XTEAWT-00-0000-00000BGE1 (CreeLED XLamp XT-E) – 1414 package, 350mA, cool white 6500K
XTEAWT-00-0000-00000BGE2 (CreeLED XLamp XT-E) – 1414 package, 350mA, cool white 5700K

Parameter Comparison

Part Number	Manufacturer	Series	Status	CCT (K)	Vf (Typ)	Test Current	Max Current	Flux @ Test Current	lm/W	CRI	Package	Height (Max)	Thermal R
L1Q0-4070000001200	Lumileds	LUXEON Q	Obsolete	4000	2.93V	350mA	1.05A	123 lm	120	70	1414 (3535)	0.083"	7°C/W
L1T2-4070000000000	Lumileds	LUXEON TX	Active	4000	2.8V	700mA	1.5A	269 lm	137	70	2-SMD	0.083"	3°C/W
XPGBWT-L1-0000-00FE3	CreeLED	XLamp XP-G2	Active	5000	2.72V	350mA	1.5A	126 lm	133	75	1414 (3535)	0.094"	4°C/W
XPLAWT-00-0000-000BV30E3	CreeLED	XLamp XP-L	Active	5000	2.95V	1.05A	3A	430 lm	139	70	1414 (3535)	0.111"	2.5°C/W
XPLAWT-00-0000-000BV40E3	CreeLED	XLamp XP-L	Active	5000	2.95V	1.05A	3A	450 lm	145	70	1414 (3535)	0.111"	2.5°C/W
XPLAWT-00-0000-000UT60E7	CreeLED	XLamp XP-L	Active	3000	2.95V	1.05A	3A	290 lm	94	90	1414 (3535)	0.111"	2.5°C/W
XTEAWT-00-0000-000000EE4	CreeLED	XLamp XT-E	Active	4500	2.85V	350mA	1.5A	118 lm	118	—	1414 (3535)	0.100"	5°C/W
XTEAWT-00-0000-000000HE2	CreeLED	XLamp XT-E	Active	5700	2.85V	350mA	1.5A	144 lm	144	—	1414 (3535)	0.100"	5°C/W
XTEAWT-00-0000-000000HF4	CreeLED	XLamp XT-E	Active	4750	2.85V	350mA	1.5A	144 lm	144	—	1414 (3535)	0.100"	5°C/W
XTEAWT-00-0000-00000BGE1	CreeLED	XLamp XT-E	Active	6500	2.85V	350mA	1.5A	135 lm	135	70	1414 (3535)	0.100"	5°C/W
XTEAWT-00-0000-00000BGE2	CreeLED	XLamp XT-E	Active	5700	2.85V	350mA	1.5A	135 lm	135	70	1414 (3535)	0.100"	5°C/W

Engineering Selection Recommendations

Primary Recommendation: L1T2-4070000000000 (Lumileds LUXEON TX)

This part maintains manufacturer continuity with Lumileds and matches the neutral white 4000K color temperature of the original L1Q0-4070000001200. Both components are RoHS3 compliant and REACH unaffected. The LUXEON TX series is active and widely available. Forward voltage (2.8V) and test current (700mA) differ from the original, requiring circuit verification for current-limiting designs.

Secondary Recommendations: CreeLED XLamp XT-E Series (350mA Test Current)

The XTEAWT-00-0000-000000EE4 (4500K neutral white) and XTEAWT-00-0000-000000HF4 (4750K neutral white) maintain the 350mA test current of the original part, minimizing circuit redesign. Both are RoHS compliant and REACH unaffected. Forward voltage (2.85V) is within acceptable tolerance of the original 2.93V. Package dimensions and thermal resistance (5°C/W) differ slightly from the original (7°C/W).

Alternative Options: CreeLED XLamp XP-G2 (XPGBWT-L1-0000-00FE3)

This part maintains identical 350mA test current and 1414 package form factor. Forward voltage (2.72V) is lower than the original, suitable for designs with adequate headroom. Color temperature is 5000K (cool white), requiring application compatibility verification. CRI of 75 exceeds the original specification of 70.

Higher-Power Alternatives: CreeLED XLamp XP-L Series

The XPLAWT-00-0000-000BV30E3 and XPLAWT-00-0000-000BV40E3 deliver significantly higher luminous flux (430–450 lm) at 1.05A test current. These parts are suitable for applications requiring increased brightness. Forward voltage (2.95V) closely matches the original. Package height (0.111") exceeds the original (0.083"), requiring mechanical clearance verification. Thermal resistance (2.5°C/W) is superior to the original.

All recommended substitutes maintain RoHS compliance and REACH unaffected status, ensuring regulatory continuity.

Frequently Asked Questions (FAQ)

Q: Can I directly replace L1Q0-4070000001200 with L1T2-4070000000000 without circuit modification?

A: Both parts are neutral white 4000K from Lumileds with similar forward voltage (2.8V vs. 2.93V). However, the test current differs significantly (700mA vs. 350mA). Direct replacement requires verification that your current-limiting circuit can accommodate the higher current rating. Thermal management may also require reassessment due to improved thermal resistance (3°C/W vs. 7°C/W).

Q: What is the difference between the CreeLED XLamp XT-E and XP-L series?

A: The XT-E series operates at 350mA test current, matching the original L1Q0 part and minimizing circuit changes. The XP-L series operates at 1.05A test current and delivers higher luminous flux (290–450 lm vs. 118–144 lm for XT-E). XP-L parts have superior thermal resistance (2.5°C/W) but taller package height (0.111" vs. 0.100"), requiring mechanical compatibility verification.

Q: Why do some substitute parts have different color temperatures (5000K, 5700K, 6500K) instead of 4000K?

A: The original L1Q0-4070000001200 is obsolete, and active alternatives may not be available in identical color temperature. Neutral white options (4500K, 4750K) are closer matches than cool white (5000K, 5700K, 6500K). Application requirements determine acceptable color temperature deviation. Warm white alternatives (3000K) are available but represent a significant shift in color rendering.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. All recommended substitutes are either ROHS3 compliant or RoHS compliant and carry REACH unaffected status, matching the regulatory profile of the original L1Q0-4070000001200.

Q: What is the impact of thermal resistance differences on my design?

A: The original L1Q0 has 7°C/W thermal resistance. Substitutes range from 2.5°C/W (XP-L series) to 5°C/W (XT-E series). Lower thermal resistance improves heat dissipation, reducing junction temperature at equivalent power dissipation. This allows higher operating currents or improved reliability in thermally constrained applications. Designs with marginal thermal margins benefit from lower thermal resistance substitutes.

Q: Can I use the XPLAWT-00-0000-000UT60E7 (warm white 3000K) as a substitute?

A: This part is mechanically and electrically compatible (1414 package, 1.05A rated, 2.95V forward voltage) but represents a significant color temperature shift from 4000K neutral white to 3000K warm white. Application compatibility depends on color rendering requirements. The CRI of 90 exceeds the original specification of 70, providing superior color accuracy if warm white is acceptable.

Q: What are the package differences between substitute parts?

A: Most substitutes use the 1414 (3535 Metric) package matching the original. The L1T2-4070000000000 uses a 2-SMD package with no lead exposed pad, which is mechanically similar but may require PCB footprint verification. Height variations range from 0.083" (original) to 0.111" (XP-L series), affecting mechanical clearance in space-constrained designs.

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