WP63SRC LED Red Clear T-1 3/4 Through Hole Equivalent & Substitute Parts

Part Overview

The WP63SRC is a red LED indication component manufactured by Kingbright, featuring a 5mm T-1 3/4 through-hole package with clear lens transparency. This discrete LED operates at 1.85V forward voltage with a 250mcd luminous intensity and 640nm dominant wavelength. The product is currently obsolete, necessitating identification of equivalent substitute components that maintain functional compatibility within the same package class and electrical operating parameters.

Key Parameters

Parameter	Value
Manufacturer Part Number	WP63SRC
Manufacturer	Kingbright
Product Status	Obsolete
Color	Red
Lens Transparency	Clear
Lens Size	5mm, T-1 3/4
Voltage - Forward (Vf) Typical	1.85V
Current - Test	20mA
Millicandela Rating	250mcd
Wavelength - Dominant	640nm
Wavelength - Peak	655nm
Viewing Angle	30°
Mounting Type	Through Hole
Package / Case	Radial
Height (Max)	6.00mm
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the WP63SRC are classified based on strict adherence to the following compatibility criteria:

Primary Substitution Criteria:

Package Type: T-1 3/4 (5mm) through-hole radial configuration
Mounting Type: Through hole
Color: Red
Lens Transparency: Clear
Current Rating: 20mA test current
Forward Voltage Range: 1.85V to 2.0V (within standard LED operating tolerance)
Wavelength Range: 620nm to 655nm (red spectrum)
Viewing Angle: 6° to 60° (dependent on application requirements)

Grouping Logic:

Group 1 - Kingbright Manufacturer Substitute: WP63SURDK represents the manufacturer-recommended alternative from Kingbright. While this part features a diffused lens (versus clear) and higher luminous intensity (700mcd), it maintains the same T-1 3/4 package, through-hole mounting, and compatible forward voltage (1.95V).

Group 2 - Broadcom Limited High-Brightness Series: HLMP-EG08 series variants (VY000, WZ000, WZ0DD, X1000, Y2000, YZ000) provide clear-lens alternatives with forward voltage of 1.9V and T-1 3/4 packaging. These parts offer luminous intensities ranging from 8100mcd to 18150mcd with narrow viewing angles (8°), suitable for applications requiring higher brightness and directional output.

Group 3 - Everlight Electronics Co Ltd Alternatives: 383-2SDRC/S530-A4, 383-2SURC/S530-A6, and 7343-2USRC/S1060 provide clear-lens red LEDs in 5mm packages with forward voltages of 2.0V. The 7343-2USRC/S1060 maintains the 30° viewing angle specification of the original part, while the 383-series variants offer higher luminous intensities (2780mcd to 6300mcd) with narrower viewing angles (6°).

Parameter Comparison

Parameter	WP63SRC (Main)	WP63SURDK	383-2SDRC/S530-A4	383-2SURC/S530-A6	7343-2USRC/S1060	HLMP-EG08-VY000	HLMP-EG08-WZ000	HLMP-EG08-YZ000
Manufacturer	Kingbright	Kingbright	Everlight	Everlight	Everlight	Broadcom	Broadcom	Broadcom
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active
Color	Red	Red	Red	Red	Red	Red	Red	Red
Lens Transparency	Clear	Diffused	Clear	Clear	Clear	Clear	Clear	Clear
Lens Size	5mm, T-1 3/4	5mm, T-1 3/4	5.00mm Dia	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
Voltage - Forward (Vf) Typ	1.85V	1.95V	2V	2V	2V	1.9V	1.9V	1.9V
Current - Test	20mA	20mA	20mA	20mA	20mA	20mA	20mA	20mA
Millicandela Rating	250mcd	700mcd	2780mcd	6300mcd	4000mcd	8100mcd	10750mcd	12650mcd
Wavelength - Dominant	640nm	630nm	639nm	624nm	631nm	626nm	626nm	626nm
Wavelength - Peak	655nm	645nm	650nm	632nm	639nm	635nm	635nm	635nm
Viewing Angle	30°	60°	6°	6°	30°	8°	8°	8°
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Height (Max)	6.00mm	7.25mm	8.90mm	8.90mm	8.85mm	8.91mm	8.91mm	8.91mm
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not Specified	Not Specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	Not Applicable	Not Specified	Not Specified	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

For Direct Replacement with Minimum Design Impact:

The 7343-2USRC/S1060 from Everlight Electronics provides the closest functional match to the WP63SRC. This part maintains the identical 30° viewing angle, T-1 3/4 package geometry, and through-hole mounting configuration. The forward voltage of 2.0V represents a 0.15V increase from the original 1.85V specification, which falls within acceptable tolerance for standard LED circuit designs. The luminous intensity increase to 4000mcd (from 250mcd) provides enhanced brightness while maintaining clear lens transparency. ROHS3 compliance and MSL 1 rating ensure environmental and handling compatibility with modern manufacturing processes.

For Applications Requiring Maintained Brightness Characteristics:

The WP63SURDK from Kingbright, as the manufacturer-recommended substitute, offers active product status and direct manufacturer support. Although the diffused lens differs from the original clear lens, the 700mcd rating and 1.95V forward voltage provide a controlled brightness increase suitable for indicator applications. The 60° viewing angle expands the visibility range compared to the original 30° specification.

For High-Brightness Applications with Directional Output:

The Broadcom HLMP-EG08 series (WZ000, X1000, Y2000, YZ000 variants) delivers luminous intensities from 10750mcd to 18150mcd with narrow 8° viewing angles. These parts maintain clear lens transparency, 1.9V forward voltage compatibility, and ROHS3 compliance. Selection within this series depends on specific brightness requirements and circuit design constraints. The WZ000 variant (10750mcd) provides a balanced option between brightness and availability (1461 pcs in stock).

For Narrow-Angle, High-Intensity Applications:

The Everlight 383-2SURC/S530-A6 offers 6300mcd luminous intensity with a 6° viewing angle, suitable for focused indicator applications. The 2.0V forward voltage and clear lens maintain compatibility with the original electrical and optical specifications.

Compliance Considerations:

All recommended substitutes maintain ROHS3 compliance. The Broadcom and Everlight 7343-2USRC/S1060 parts specify MSL 1 (Unlimited) moisture sensitivity, matching the original component's handling requirements. Everlight 383-series parts do not specify MSL ratings; verification with the supplier is necessary for moisture-sensitive manufacturing environments.

Frequently Asked Questions (FAQ)

Q1: Can the WP63SURDK (diffused lens) be used as a direct replacement for the WP63SRC (clear lens)?

A: The WP63SURDK is electrically compatible and maintains the same T-1 3/4 package and through-hole mounting. However, the diffused lens produces a different optical output pattern compared to the clear lens. The diffused lens scatters light over a wider 60° viewing angle versus the original 30°, and the red-tinted lens affects color perception. Use this substitute only if the application tolerates these optical differences.

Q2: What is the significance of the forward voltage differences between substitute parts?

A: The WP63SRC operates at 1.85V, while most substitutes range from 1.9V to 2.0V. These differences are within standard LED operating tolerances and typically require only minor circuit adjustments (resistor value changes) to maintain the 20mA test current. Circuits designed with current-limiting resistors will automatically compensate for these small voltage variations.

Q3: Why do some substitute parts have significantly higher millicandela ratings?

A: Luminous intensity (measured in millicandela) depends on the LED die design, lens optics, and phosphor composition. Higher mcd ratings indicate greater brightness output. The original WP63SRC at 250mcd is a low-brightness indicator LED. Substitutes with higher ratings (700mcd to 18150mcd) provide enhanced visibility. Selection depends on whether the application requires the original brightness level or can tolerate increased brightness.

Q4: What does the viewing angle specification mean for substitution?

A: Viewing angle defines the cone of light emission. The WP63SRC has a 30° viewing angle, meaning light intensity remains acceptable within a 30° cone from the LED's optical axis. Substitutes with 6° to 8° angles produce narrower, more directional light beams suitable for focused indicators. Substitutes with 60° angles (WP63SURDK) provide wider light distribution. Choose based on the application's visibility requirements and mounting position.

Q5: Are there height differences that affect PCB layout?

A: Yes. The WP63SRC has a maximum height of 6.00mm, while most substitutes range from 7.25mm to 8.91mm. These height differences may affect PCB clearance, enclosure fit, and visual alignment. Verify mechanical compatibility with the application's physical constraints before substitution.

Q6: Which substitute offers the best balance of availability and compatibility?

A: The HLMP-EG08-WZ000 from Broadcom combines high availability (1461 pcs in stock), clear lens transparency, 1.9V forward voltage, T-1 3/4 package, and ROHS3 compliance. The 10750mcd brightness and 8° viewing angle suit most indicator applications requiring enhanced visibility compared to the original 250mcd part.

Q7: Do all substitutes maintain ROHS3 compliance?

A: All recommended substitutes specify ROHS3 compliance. The Everlight 383-series parts do not explicitly state RoHS status in the provided data; confirmation with the manufacturer is recommended for regulated applications.

Q8: What packaging options are available for production quantities?

A: The WP63SURDK is available in Tape & Reel (TR) packaging for automated assembly. Broadcom HLMP-EG08 variants are supplied in Bulk or Tape & Box (TB) formats. Everlight parts are available in Bulk packaging. Packaging selection depends on production volume and assembly equipment compatibility.

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