LXW8-PW50 Equivalent & Substitute Parts

Part Overview

The LXW8-PW50 is a LUXEON Rebel ES cool white LED (5000K) in 1812 (4532 Metric) surface mount package, rated for 700mA operation with 2.9V forward voltage and 120° viewing angle. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain functional compatibility for new designs and production continuity.

Key Parameters

Parameter	Value
Manufacturer Part Number	LXW8-PW50
Manufacturer	Lumileds
Series	LUXEON Rebel ES
Product Status	Obsolete
Color / CCT	White, Cool / 5000K
Package / Case	1812 (4532 Metric)
Mounting Type	Surface Mount
Viewing Angle	120°
Voltage - Forward (Vf) Typ	2.9V
Current - Test	700mA
Current - Max	1A
Flux @ 25°C, 700mA	200lm (Typ)
Lumens/Watt @ 700mA	99 lm/W
CRI	80
Size / Dimension	0.177" L x 0.120" W (4.49mm x 3.05mm)
Height - Seated (Max)	0.083" (2.10mm)
Thermal Resistance	6°C/W
RoHS Status	ROHS3 Compliant
MSL	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Primary Compatibility Requirements:

Package / Case: 1812 (4532 Metric) surface mount
Mounting Type: Surface Mount
Viewing Angle: 120°
Color Category: White
CCT Range: 5000K nominal (cool white spectrum)
RoHS Status: ROHS3 Compliant
MSL: 1 (Unlimited)

Secondary Electrical Compatibility:

Forward Voltage (Vf): 2.76V to 3.7V range acceptable for circuit design flexibility
Current Rating: Minimum 700mA test current capability
Maximum Current: 1A or greater

Substitute parts are grouped into two categories:

Category A - Lumileds LUXEON Rebel PLUS Series (Same Manufacturer, Active Status): LX18-P150-5 maintains the same manufacturer ecosystem, identical package, and cool white 5000K specification with active product status.

Category B - Everlight SHUEN Series (Alternative Manufacturer, Active Status): ELSH-J61C3-0LPGS-D5700 and ELSH-J61C3-0LPGS-D6500 provide cool white alternatives in identical package with active status. ELSH-J21M3-0LPGS-D3000 offers warm white alternative for applications permitting CCT variation.

Parameter Comparison

Parameter	LXW8-PW50 (Main)	LX18-P150-5	ELSH-J61C3-0LPGS-D5700	ELSH-J61C3-0LPGS-D6500	ELSH-J21M3-0LPGS-D3000
Manufacturer	Lumileds	Lumileds	Everlight	Everlight	Everlight
Series	LUXEON Rebel ES	LUXEON Rebel PLUS	SHUEN	SHUEN	SHUEN
Product Status	Obsolete	Active	Active	Active	Active
Color / CCT	White, Cool / 5000K	White, Cool / 5000K	White, Cool / 5700K	White, Cool / 6500K	White, Warm / 3000K
Package / Case	1812 (4532 Metric)	1812 (4532 Metric)	1812 (4532 Metric)	1812 (4532 Metric)	1812 (4532 Metric)
Viewing Angle	120°	120°	120°	120°	120°
Vf (Typ)	2.9V	2.76V	3.7V	3.7V	3.7V
Current - Test	700mA	350mA	700mA	700mA	700mA
Current - Max	1A	1A	750mA	750mA	750mA
Flux @ 25°C, 700mA	200lm (Typ)	—	150lm (150-160lm)	150lm (150-160lm)	110lm (110-120lm)
Lumens/Watt @ Test Current	99 lm/W	110 lm/W	58 lm/W	58 lm/W	42 lm/W
CRI	80	80	70	70	75
Size / Dimension	0.177" L x 0.120" W (4.49mm x 3.05mm)	0.177" L x 0.120" W (4.49mm x 3.05mm)	0.177" L x 0.120" W (4.50mm x 3.05mm)	0.177" L x 0.120" W (4.50mm x 3.05mm)	0.177" L x 0.120" W (4.50mm x 3.05mm)
Height - Seated (Max)	0.083" (2.10mm)	0.083" (2.10mm)	0.085" (2.15mm)	0.085" (2.15mm)	0.085" (2.15mm)
Thermal Resistance	6°C/W	9°C/W	6°C/W	6°C/W	6°C/W
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

LX18-P150-5 (Lumileds LUXEON Rebel PLUS): Preferred substitute for direct replacement in active designs. Maintains Lumileds ecosystem, identical 5000K CCT specification, and ROHS3 compliance. Active product status ensures long-term supply availability. Forward voltage reduction (2.76V vs 2.9V) and lower test current (350mA vs 700mA) require circuit verification but provide improved efficiency (110 lm/W vs 99 lm/W). Thermal resistance increase (9°C/W vs 6°C/W) must be evaluated in thermal-constrained applications.

ELSH-J61C3-0LPGS-D5700 (Everlight SHUEN Cool White 5700K): Alternative substitute with active status and identical package. CCT specification (5700K vs 5000K) represents minor warm shift within cool white spectrum. Forward voltage increase (3.7V vs 2.9V) and higher thermal resistance (6°C/W maintained) require circuit redesign. Lumens output at 700mA (150lm vs 200lm) represents 25% reduction. CRI reduction (70 vs 80) impacts color rendering applications.

ELSH-J61C3-0LPGS-D6500 (Everlight SHUEN Cool White 6500K): Alternative substitute with active status. CCT specification (6500K) represents cooler shift from 5000K nominal. Electrical and thermal characteristics identical to ELSH-J61C3-0LPGS-D5700. Suitable for applications where cooler color temperature is acceptable.

ELSH-J21M3-0LPGS-D3000 (Everlight SHUEN Warm White 3000K): Alternative substitute for applications permitting warm white spectrum. CCT specification (3000K) represents significant shift from cool white 5000K. Lumens output (110lm at 700mA) represents 45% reduction from original. CRI (75) and efficiency (42 lm/W) lower than original specification. Suitable only where warm white color temperature is functionally acceptable.

Frequently Asked Questions (FAQ)

Q: Can LX18-P150-5 be used as a direct drop-in replacement for LXW8-PW50?

A: LX18-P150-5 shares identical package (1812/4532 Metric), mounting type, viewing angle (120°), and cool white 5000K specification. However, forward voltage (2.76V vs 2.9V) and test current (350mA vs 700mA) differ. Circuit verification is required to confirm compatibility with existing current-limiting resistor values and power supply specifications.

Q: What is the impact of forward voltage differences between LXW8-PW50 (2.9V) and substitute parts?

A: LX18-P150-5 operates at lower voltage (2.76V), reducing power dissipation. Everlight SHUEN parts operate at higher voltage (3.7V), increasing power dissipation and requiring higher supply voltage. Designs using series resistors or current-limiting circuits must be recalculated based on the substitute part's Vf specification.

Q: Are the Everlight SHUEN parts (ELSH-J61C3-0LPGS-D5700, ELSH-J61C3-0LPGS-D6500, ELSH-J21M3-0LPGS-D3000) compatible with LXW8-PW50 applications?

A: All SHUEN parts maintain identical package, mounting type, and viewing angle. However, forward voltage increase (3.7V vs 2.9V), lumens reduction (150lm or 110lm vs 200lm), and CRI reduction (70 or 75 vs 80) require application-level evaluation. CCT variations (5700K, 6500K, 3000K) may impact visual appearance in color-critical applications.

Q: What is the significance of thermal resistance differences?

A: LXW8-PW50 and Everlight SHUEN parts specify 6°C/W thermal resistance. LX18-P150-5 specifies 9°C/W, indicating higher junction temperature rise per watt of dissipation. In thermally constrained designs, LX18-P150-5 may require enhanced thermal management or derated operation.

Q: Can I use ELSH-J21M3-0LPGS-D3000 (warm white 3000K) in place of LXW8-PW50 (cool white 5000K)?

A: ELSH-J21M3-0LPGS-D3000 is mechanically and electrically compatible but produces warm white light (3000K) instead of cool white (5000K). This substitution is valid only for applications where warm white color temperature is functionally acceptable. Lumens output is 45% lower (110lm vs 200lm).

Q: What compliance certifications apply to all substitute parts?

A: All substitute parts (LX18-P150-5, ELSH-J61C3-0LPGS-D5700, ELSH-J61C3-0LPGS-D6500, ELSH-J21M3-0LPGS-D3000) maintain ROHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating, matching the original LXW8-PW50 specification.

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