XPEHEW-01-0000-00EF4 LED XLamp® XP-E HEW Neutral White 4750K Equivalent & Substitute Parts

Part Overview

The XPEHEW-01-0000-00EF4 is a CreeLED XLamp® XP-E HEW neutral white LED operating at 4750K color temperature, rated for 350mA at 3V forward voltage with 118lm luminous flux at 25°C. This component is classified as obsolete, necessitating identification of active equivalent and substitute parts for ongoing production and design requirements. Substitute parts must maintain compatibility across electrical performance, thermal characteristics, and mechanical form factor specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	XPEHEW-01-0000-00EF4
Series	XLamp® XP-E HEW
Color	White, Neutral
CCT (K)	4750K
Flux @ 25°C, 350mA	118lm (114lm – 122lm)
Forward Voltage (Vf) Typ	3V
Current – Test	350mA
Current – Max	1A
Lumens/Watt @ 350mA	112 lm/W
CRI (Color Rendering Index)	70 (Typ)
Viewing Angle	120°
Package / Case	1414 (3535 Metric)
Size / Dimension	0.136" L x 0.136" W (3.45mm x 3.45mm)
Height – Seated (Max)	0.087" (2.21mm)
Thermal Resistance	6°C/W
Mounting Type	Surface Mount
Product Status	Obsolete
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Electrical Compatibility: Forward voltage (Vf), test current (350mA), maximum current rating, and luminous flux output at specified test conditions must remain within acceptable operational ranges for the target application circuit.

Optical Characteristics: Color temperature (CCT), color rendering index (CRI), and viewing angle define the photometric performance. Neutral white 4750K parts with CRI 70 are functionally equivalent.

Mechanical & Thermal: Package type (1414/3535 Metric), surface mount configuration, and thermal resistance (Rθ) determine PCB compatibility and heat dissipation capability.

Product Status & Compliance: Active status parts with RoHS compliance and REACH unaffected designation are preferred for new designs. Obsolete parts require substitution.

Substitute parts are grouped into two categories:

Direct Parametric Equivalents: XLamp® XP-E series parts with 4750K CCT, 350mA operation, and 1414 package
Functional Alternatives: XLamp® XT-E and XLamp® XP-G series with compatible electrical and thermal performance at 4750K or adjacent CCT values

Parameter Comparison

Parameter	XPEHEW-01-0000-00EF4 (Main)	XTEAWT-02-0000-00000BHD1	XPEWHT-01-0000-00ED1	XPEWHT-01-R250-00ED1	XPGWHT-01-0000-00EC2
Series	XLamp® XP-E HEW	XLamp® XT-E	XLamp® XP-E	XLamp® XP-E	XLamp® XP-G
CCT (K)	4750K	4750K	4750K	4750K	4500K
Flux @ 25°C, 350mA (lm)	118 (114–122)	118 (114–122)	118 (114–122)	118 (114–122)	118 (114–122)
Forward Voltage (Vf) Typ (V)	3.0	2.9	3.05	3.05	2.9
Current – Test (mA)	350	350	350	350	350
Current – Max (A)	1.0	1.5	1.0	1.0	1.5
Lumens/Watt @ 350mA	112	116	111	111	116
CRI (Typ)	70	70	70	70	70
Viewing Angle (°)	120	115	115	115	125
Package / Case	1414 (3535 Metric)	1414 (3535 Metric)	1414 (3535 Metric)	1414 (3535 Metric)	1414 (3535 Metric)
Height – Seated (Max) (mm)	2.21	2.54	2.13	2.13	2.13
Thermal Resistance (°C/W)	6	5	9	9	4
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Not specified	Not specified	RoHS Compliant	RoHS Compliant	RoHS Compliant

Engineering Selection Recommendations

Primary Substitute – XPEWHT-01-0000-00ED1 (XLamp® XP-E, 4750K): This part provides the closest parametric match with identical CCT (4750K), flux output (118lm), test current (350mA), and package configuration. Forward voltage increases from 3.0V to 3.05V, requiring minor circuit adjustment. Product status is active with RoHS compliance. Thermal resistance increases to 9°C/W, necessitating thermal design review for high-power applications.

Alternative Substitute – XTEAWT-02-0000-00000BHD1 (XLamp® XT-E, 4750K): This part matches CCT and flux specifications with lower forward voltage (2.9V) and superior thermal resistance (5°C/W). Maximum current rating increases to 1.5A, providing design flexibility. Viewing angle reduces to 115° from 120°. Product status is active. Packaging is Tape & Reel format.

Secondary Alternative – XPGWHT-01-0000-00EC2 (XLamp® XP-G, 4500K): This part offers superior thermal performance (4°C/W) and higher efficiency (116 lm/W) with lower forward voltage (2.9V). CCT shifts to 4500K, representing a 250K reduction from the original 4750K specification. Viewing angle expands to 125°. Product status is active with RoHS compliance. Selection requires confirmation that 4500K color temperature is acceptable for the application.

All recommended substitutes maintain the 1414 (3535 Metric) package, surface mount configuration, and 350mA test current specification. Circuit design must accommodate forward voltage variations and thermal resistance differences.

Frequently Asked Questions (FAQ)

Q: Can XPEWHT-01-0000-00ED1 directly replace XPEHEW-01-0000-00EF4 without circuit modification?

A: Direct replacement is not recommended without circuit review. Forward voltage increases from 3.0V to 3.05V, and thermal resistance increases from 6°C/W to 9°C/W. Current-limiting resistor values and thermal management design must be evaluated for the specific application.

Q: What is the significance of the viewing angle difference between the main part (120°) and substitute parts (115°–125°)?

A: Viewing angle defines the half-angle at which luminous intensity drops to 50% of peak. Narrower angles (115°) concentrate light output; wider angles (125°) distribute light more broadly. Application optics and beam pattern requirements determine acceptability of this variation.

Q: Why does XPGWHT-01-0000-00EC2 have a different CCT (4500K vs. 4750K)?

A: Color temperature is a fundamental optical characteristic. The 250K difference shifts the light output toward cooler tones. This part is suitable only if the application permits 4500K operation or if color temperature adjustment is acceptable.

Q: Are all substitute parts RoHS compliant?

A: XPEWHT-01-0000-00ED1, XPEWHT-01-R250-00ED1, and XPGWHT-01-0000-00EC2 are RoHS compliant. XTEAWT-02-0000-00000BHD1 RoHS status is not specified in the provided data. Compliance verification is required for regulated applications.

Q: What is the impact of thermal resistance variation across substitute parts?

A: Thermal resistance (Rθ) determines junction temperature rise above ambient for a given power dissipation. Lower values (4°C/W for XPGWHT-01-0000-00EC2) provide superior thermal performance; higher values (9°C/W for XPEWHT series) require enhanced PCB thermal design. Selection depends on application power levels and thermal budget constraints.

Q: Can parts with different maximum current ratings (1.0A vs. 1.5A) be used interchangeably?

A: Maximum current rating defines the absolute limit for safe operation. Parts with higher ratings (1.5A) can operate at lower currents without degradation. However, circuit design must ensure actual operating current remains within the specified test current (350mA) or within the lower maximum rating of the original part (1.0A) unless application requirements explicitly permit higher currents.

Q: What packaging format differences exist between substitute options?

A: XPEHEW-01-0000-00EF4 is supplied in standard packaging. XTEAWT-02-0000-00000BHD1 is supplied in Tape & Reel (TR) format. All parts use identical 1414 (3535 Metric) surface mount package. Tape & Reel format is standard for high-volume production; packaging format does not affect electrical or thermal performance.

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