WP7113SRD/F Equivalent & Substitute Parts Reference

Part Overview

The WP7113SRD/F is a red diffused T-1 3/4 (5mm) through-hole LED manufactured by Kingbright, designed for discrete LED indication applications. This part operates at 1.85V forward voltage with a 300mcd brightness rating and 640nm dominant wavelength. The product is currently obsolete, necessitating identification of functionally equivalent alternatives that maintain compatibility with existing circuit designs while meeting current availability and compliance requirements.

Key Parameters

Parameter	Value	Significance for Substitution
Lens Size	5mm, T-1 3/4	Physical form factor; determines mechanical fit in PCB and housing
Mounting Type	Through Hole Radial	Connection method; must match PCB design
Color	Red	Visual indication function; non-negotiable for application
Lens Transparency	Diffused	Light distribution characteristic; affects viewing angle and intensity perception
Voltage - Forward (Vf)	1.85V typical	Circuit design parameter; determines series resistor and power supply compatibility
Current - Test	20mA	Operating current specification; defines circuit current limiting requirements
Wavelength - Dominant	640nm	Color specification; defines red hue and visual perception
Viewing Angle	30°	Light distribution pattern; affects visibility from different angles
Millicandela Rating	300mcd	Brightness intensity; determines visibility in ambient lighting conditions
RoHS Status	ROHS3 Compliant	Environmental and regulatory compliance requirement

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following critical parameters:

Mandatory Compatibility Parameters:

Lens Size: 5mm, T-1 3/4 (physical form factor)
Mounting Type: Through Hole Radial (connection method)
Color: Red (functional requirement)
Lens Transparency: Diffused (optical characteristic)
Package / Case: Radial (electrical connection configuration)
RoHS Status: ROHS3 Compliant (regulatory requirement)

Allowable Variation Parameters:

Voltage - Forward (Vf): ±0.15V tolerance acceptable (1.70V to 2.00V range)
Current - Test: 10mA to 20mA operating range
Wavelength - Dominant: 626nm to 655nm (red spectrum range)
Viewing Angle: 30° to 65° (application-dependent)
Millicandela Rating: 8.6mcd to 1300mcd (brightness variation acceptable based on circuit design)

All identified substitute parts meet the mandatory compatibility parameters. Variations in forward voltage, brightness, and viewing angle are within acceptable engineering tolerances for LED indication applications and do not prevent functional substitution when circuit design accommodates the specified operating parameters.

Parameter Comparison

Parameter	WP7113SRD/F (Main)	WP7113SURDK	HLMP-3762	HLMP-EG55-GK0DD	HLMP-EG55-HJ000	HLMP-EG55-JK0DU	SSL-LX5093SID	HLMP-WG02
Manufacturer	Kingbright	Kingbright	Broadcom Limited	Broadcom Limited	Broadcom Limited	Broadcom Limited	Lumex Opto/Components Inc.	Broadcom Limited
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Lens Size	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4	5mm, T-1 3/4
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Color	Red	Red	Red	Red	Red	Red	Red	Red
Lens Transparency	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused	Diffused
Voltage - Forward (Vf) Typ	1.85V	1.95V	1.9V	1.9V	1.9V	1.9V	2.0V	1.9V
Current - Test	20mA	20mA	10mA	20mA	20mA	20mA	20mA	20mA
Wavelength - Dominant	640nm	630nm	626nm	626nm	626nm	626nm	—	—
Wavelength - Peak	655nm	645nm	635nm	635nm	635nm	635nm	636nm	635nm
Viewing Angle	30°	30°	60°	55°	55°	55°	60°	65°
Millicandela Rating	300mcd	1300mcd	8.6mcd	270mcd	245mcd	320mcd	700mcd	26mcd
Height (Max)	8.60mm	9.85mm	9.19mm	8.91mm	8.91mm	8.91mm	8.60mm	8.91mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Packaging	—	Bulk	Bulk	Tape & Box	Bulk	Bulk	Bulk	Bulk

Engineering Selection Recommendations

Primary Recommendation: WP7113SURDK (Kingbright)

WP7113SURDK is the manufacturer-recommended direct substitute. Both parts share the same base product number (WP7113) and are manufactured by Kingbright. This part is currently in active production with 3836 units in stock. Forward voltage is 1.95V (within 0.10V of original), and brightness is increased to 1300mcd. Height is 9.85mm, which is 1.25mm taller than the original; verify clearance in mechanical design. All compliance certifications (ROHS3, REACH Unaffected, EAR99) are maintained.

Secondary Recommendations: Broadcom HLMP Series

The Broadcom HLMP-EG55 series (HLMP-EG55-GK0DD, HLMP-EG55-HJ000, HLMP-EG55-JK0DU) provides active-production alternatives with forward voltage of 1.9V and brightness ratings between 245mcd and 320mcd. These parts maintain the 5mm T-1 3/4 form factor and through-hole radial mounting. Viewing angle is 55°, compared to 30° for the original part. Height is 8.91mm. All parts are ROHS3 compliant and REACH unaffected.

Alternative: SSL-LX5093SID (Lumex)

SSL-LX5093SID offers 700mcd brightness with 2.0V forward voltage and 60° viewing angle. Height matches the original at 8.60mm. This part is suitable for applications requiring higher brightness. Forward voltage is 0.15V higher; verify series resistor adjustment in circuit design.

Lower Brightness Alternative: HLMP-WG02 (Broadcom)

HLMP-WG02 provides the lowest brightness option at 26mcd with 1.9V forward voltage and 65° viewing angle. This part is suitable only for applications where reduced brightness is acceptable or preferred. Highest inventory availability (15922 units).

Not Recommended: HLMP-3762 (Broadcom)

HLMP-3762 operates at 10mA test current (half the standard 20mA specification) and provides only 8.6mcd brightness. This part is not suitable for direct substitution in circuits designed for 20mA operation and 300mcd brightness.

Frequently Asked Questions (FAQ)

Q: Can WP7113SURDK be used as a direct drop-in replacement for WP7113SRD/F?

A: WP7113SURDK is the manufacturer-recommended substitute and maintains mechanical and electrical compatibility. The primary difference is increased height (9.85mm vs. 8.60mm). Verify clearance in the mechanical assembly. Forward voltage is 1.95V (vs. 1.85V original), requiring minor series resistor adjustment if precise current limiting is critical. Brightness is significantly higher (1300mcd vs. 300mcd), which may affect visual perception in the application.

Q: What is the difference between the Broadcom HLMP-EG55 variants?

A: All HLMP-EG55 variants (GK0DD, HJ000, JK0DU) share identical electrical specifications: 1.9V forward voltage, 20mA test current, 55° viewing angle, and 8.91mm height. The primary difference is brightness rating: GK0DD provides 270mcd, HJ000 provides 245mcd, and JK0DU provides 320mcd. Selection depends on required brightness for the specific application. All are ROHS3 compliant and actively produced.

Q: Is the increased viewing angle of substitute parts a concern?

A: The original WP7113SRD/F has a 30° viewing angle, while most substitutes offer 55° to 65°. A wider viewing angle means light is distributed over a larger area, reducing peak brightness perception from the direct viewing axis. For applications requiring narrow-angle indication, this may be undesirable. For general indication purposes, wider viewing angles improve visibility from off-axis positions. Evaluate application requirements before selection.

Q: Can I use HLMP-3762 as a substitute?

A: HLMP-3762 is not recommended. This part operates at 10mA test current (half the standard specification) and provides only 8.6mcd brightness (compared to 300mcd for the original). Circuits designed for 20mA operation will not provide adequate brightness with this part. Use only if the application specifically requires 10mA operation and minimal brightness.

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

A: Forward voltage variations between 1.85V and 2.0V require adjustment of the series current-limiting resistor. For a 5V supply with 20mA target current: Original (1.85V Vf) requires approximately 157Ω resistor; WP7113SURDK (1.95V Vf) requires approximately 152Ω resistor; SSL-LX5093SID (2.0V Vf) requires approximately 150Ω resistor. These differences are typically within standard resistor tolerances. Recalculate for your specific supply voltage and desired current.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All identified substitute parts carry ROHS3 Compliant certification and REACH Unaffected status, matching the compliance profile of the original WP7113SRD/F. All parts are classified as EAR99 for export control purposes.

Q: What packaging options are available?

A: WP7113SURDK, HLMP-3762, HLMP-EG55-HJ000, HLMP-EG55-JK0DU, SSL-LX5093SID, and HLMP-WG02 are available in Bulk packaging. HLMP-EG55-GK0DD is available in Tape & Box (TB) packaging. Select based on procurement and assembly requirements.

Q: Which substitute offers the closest electrical match to the original?

A: HLMP-EG55-GK0DD provides the closest electrical match: 1.9V forward voltage (vs. 1.85V original), 20mA test current (identical), 270mcd brightness (vs. 300mcd original), and 8.91mm height (vs. 8.60mm original). The 30mcd brightness difference is approximately 10% and is within acceptable tolerance for indication applications. Viewing angle is 55° (vs. 30° original).

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