WP1503GC Equivalent & Substitute Parts Reference

Part Overview

The WP1503GC is a green LED indicator manufactured by Kingbright, designed for through-hole mounting applications. This T-1 3/4 (5mm) discrete LED operates at 2.2V forward voltage with 100mcd brightness and a 30° viewing angle. The component is Active status and ROHS3 compliant, suitable for standard indicator light applications requiring green wavelength illumination at 568nm dominant wavelength.

Substitute parts are identified based on matching mechanical form factor (T-1 3/4 through-hole radial package), electrical operating parameters (forward voltage range, current rating), optical characteristics (green color, clear lens), and compliance certifications. Alternative components enable design flexibility, supply chain continuity, and application-specific brightness or viewing angle optimization.

Key Parameters

Parameter	WP1503GC Value	Substitution Relevance
Manufacturer	Kingbright	Source identification
Part Number	WP1503GC	Primary reference
Color	Green	Critical - optical requirement
Lens Type	Round with Domed Top, Clear	Critical - mechanical and optical
Lens Size	5mm, T-1 3/4	Critical - form factor
Voltage - Forward (Vf)	2.2V	Critical - circuit compatibility
Current - Test	20mA	Critical - drive circuit rating
Millicandela Rating	100mcd	Application-dependent - brightness
Viewing Angle	30°	Application-dependent - visibility
Wavelength - Dominant	568nm	Application-dependent - color perception
Wavelength - Peak	565nm	Application-dependent - spectral response
Mounting Type	Through Hole	Critical - PCB assembly
Package / Case	Radial	Critical - lead configuration
Height (Max)	8.60mm	Critical - mechanical clearance
RoHS Status	ROHS3 Compliant	Regulatory requirement
Product Status	Active	Supply availability

Substitute Part Grouping Explanation

Substitution logic is based on the following mandatory parameters:

Critical Parameters (Must Match):

Mounting Type: Through Hole
Package / Case: Radial
Lens Size: 5mm, T-1 3/4
Color: Green
Lens Transparency: Clear
Lens Style: Round with Domed Top

Electrical Parameters (Allowable Range):

Voltage - Forward (Vf): 2.1V to 2.2V
Current - Test: 10mA to 20mA

Optical Parameters (Application-Dependent):

Millicandela Rating: 45mcd to 980mcd
Viewing Angle: 16° to 30°
Wavelength - Dominant: 565nm to 572nm
Wavelength - Peak: 555nm to 575nm

Compliance Parameters (Must Match):

RoHS Status: ROHS3 Compliant
Product Status: Active

All substitute parts listed meet the critical and compliance parameters. Variations in brightness (millicandela), viewing angle, and wavelength are permitted based on application requirements and circuit design specifications.

Parameter Comparison

Part Number	Manufacturer	Color	Vf (Typ)	Current - Test	mcd Rating	Viewing Angle	Wavelength - Peak	Height (Max)	RoHS Status	Inventory
WP1503GC	Kingbright	Green	2.2V	20mA	100mcd	30°	565nm	8.60mm	ROHS3	1024 Pcs
SSL-LX5093SGC/B	Lumex Opto/Components Inc.	Green	2.2V	20mA	300mcd	30°	565nm	8.60mm	ROHS3	5189 Pcs
LTL2R3KGKNN	Lite-On Inc.	Green	2.1V	20mA	680mcd	30°	575nm	8.70mm	ROHS3	671 Pcs
LTL2P3KGKNN	Lite-On Inc.	Green	2.1V	20mA	980mcd	22°	575nm	8.70mm	ROHS3	22842 Pcs
LTL-4238	Lite-On Inc.	Green	2.1V	10mA	90mcd	16°	565nm	8.60mm	ROHS3	11122 Pcs
5219201F	Dialight	Green	2.1V	—	60mcd	—	565nm	—	ROHS3	1075 Pcs
5219201	Dialight	—	—	—	—	—	—	—	ROHS3	939 Pcs
SSL-LX5093XGC	Lumex Opto/Components Inc.	Green	2.2V	20mA	250mcd	20°	565nm	8.60mm	ROHS3	90954 Pcs
SSL-LX5093XPGC	Lumex Opto/Components Inc.	Green	2.2V	20mA	45mcd	20°	555nm	8.60mm	ROHS3	11164 Pcs

Engineering Selection Recommendations

Direct Electrical Compatibility (2.2V Forward Voltage):

SSL-LX5093SGC/B, SSL-LX5093XGC, and SSL-LX5093XPGC from Lumex Opto/Components Inc. operate at identical 2.2V forward voltage as the WP1503GC. These parts require no circuit modification and are suitable for direct substitution in applications where the existing drive circuit is optimized for 2.2V operation. All three variants maintain 20mA test current and ROHS3 compliance.

Reduced Voltage Operation (2.1V Forward Voltage):

LTL2R3KGKNN, LTL2P3KGKNN, LTL-4238 from Lite-On Inc. and 5219201F from Dialight operate at 2.1V forward voltage. These parts are compatible with circuits designed for 2.1V to 2.2V range and provide flexibility in drive circuit design. All maintain ROHS3 compliance and through-hole radial package configuration.

Brightness and Viewing Angle Considerations:

SSL-LX5093SGC/B: 300mcd at 30° viewing angle—higher brightness, matching viewing angle
SSL-LX5093XGC: 250mcd at 20° viewing angle—moderate brightness, narrower viewing angle
SSL-LX5093XPGC: 45mcd at 20° viewing angle—lower brightness, narrower viewing angle
LTL2R3KGKNN: 680mcd at 30° viewing angle—significantly higher brightness, matching viewing angle
LTL2P3KGKNN: 980mcd at 22° viewing angle—maximum brightness, moderate viewing angle
LTL-4238: 90mcd at 16° viewing angle—comparable brightness, narrower viewing angle
5219201F: 60mcd—lower brightness option

Supply Chain and Inventory:

SSL-LX5093XGC (90,954 Pcs) and LTL2P3KGKNN (22,842 Pcs) offer highest inventory availability. LTL-4238 (11,122 Pcs) and SSL-LX5093XPGC (11,164 Pcs) provide substantial stock. WP1503GC (1,024 Pcs) and LTL2R3KGKNN (671 Pcs) have limited availability.

Regulatory and Compliance Status:

All substitute parts maintain ROHS3 compliance and Active product status. LTL2R3KGKNN carries REACH Affected status, while all other parts are REACH Unaffected. Selection should account for end-market regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can SSL-LX5093SGC/B replace WP1503GC without circuit modification?

A: Yes. Both parts operate at 2.2V forward voltage, 20mA test current, and share identical 30° viewing angle and 8.60mm maximum height. The SSL-LX5093SGC/B provides higher brightness (300mcd vs. 100mcd) but maintains electrical compatibility with existing drive circuits.

Q: What is the difference between LTL2R3KGKNN and LTL2P3KGKNN?

A: Both are Lite-On Inc. parts operating at 2.1V with 20mA test current and 8.70mm height. LTL2R3KGKNN provides 680mcd at 30° viewing angle, while LTL2P3KGKNN provides 980mcd at 22° viewing angle. Selection depends on brightness requirement and acceptable viewing angle narrowing.

Q: Are all substitute parts through-hole radial mount?

A: Yes. All listed substitute parts use through-hole radial mounting with T-1 3/4 (5mm) form factor, ensuring mechanical compatibility with PCB layouts designed for WP1503GC.

Q: What is the maximum height difference among substitute parts?

A: WP1503GC and Lumex parts (SSL-LX5093 series) have 8.60mm maximum height. Lite-On parts (LTL series) have 8.70mm maximum height—a 0.10mm difference. This variation is within standard PCB clearance tolerances but should be verified for space-constrained applications.

Q: Can I use LTL-4238 if my circuit requires lower current consumption?

A: Yes. LTL-4238 operates at 10mA test current compared to 20mA for WP1503GC and most substitutes. This part is suitable for low-power applications but provides lower brightness (90mcd) and narrower viewing angle (16°).

Q: Which substitute offers the highest brightness?

A: LTL2P3KGKNN provides 980mcd, the highest brightness among all listed parts. This part operates at 2.1V, 20mA, with 22° viewing angle and 8.70mm height.

Q: Are there wavelength differences I should consider?

A: Yes. WP1503GC has 568nm dominant wavelength (565nm peak). Most substitutes maintain 565nm peak wavelength. LTL2R3KGKNN and LTL2P3KGKNN have 572nm dominant wavelength (575nm peak), representing a slight green shift. SSL-LX5093XPGC has 555nm peak wavelength, representing a yellow-green shift. Application-specific color perception requirements should guide selection.

Q: What is the inventory status for immediate availability?

A: SSL-LX5093XGC has the highest stock (90,954 Pcs). LTL2P3KGKNN (22,842 Pcs) and LTL-4238 (11,122 Pcs) provide substantial availability. WP1503GC (1,024 Pcs) and LTL2R3KGKNN (671 Pcs) have limited stock.

Q: Do all parts meet ROHS3 compliance?

A: Yes. All listed parts are ROHS3 compliant. LTL2R3KGKNN carries REACH Affected status; all others are REACH Unaffected. Verify end-market regulatory requirements before final selection.

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