WP1503SGC Equivalent & Substitute Parts Reference

Part Overview

The WP1503SGC 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 a 200mcd brightness rating and 568nm dominant wavelength. The component is Active status and ROHS3 compliant with unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent green LEDs share the same mounting type (through-hole radial), lens configuration (clear, round domed), and compatible electrical operating parameters within acceptable tolerance ranges for the application circuit.

Key Parameters

Parameter	WP1503SGC Value	Substitution Relevance
Color	Green	Critical - must match
Lens Size / Package	5mm, T-1 3/4	Critical - physical fit
Mounting Type	Through Hole Radial	Critical - PCB compatibility
Voltage - Forward (Vf) Typ	2.2V	Important - circuit design dependent
Current - Test	20mA	Important - standard test condition
Millicandela Rating	200mcd	Application dependent
Viewing Angle	30°	Application dependent
Wavelength - Dominant	568nm	Color perception reference
Lens Transparency	Clear	Critical - optical property
RoHS Status	ROHS3 Compliant	Regulatory requirement

Substitute Part Grouping Explanation

Substitute parts for the WP1503SGC are grouped based on strict adherence to the following criteria:

Critical Matching Parameters:

Color: Green
Mounting Type: Through Hole Radial
Lens Transparency: Clear
Lens Style: Round with Domed Top
Package / Case: Radial (T-1 3/4 or 5mm equivalent)
Current - Test: 20mA
RoHS Compliance: ROHS3 or equivalent

Variable Parameters (Application Dependent):

Voltage - Forward (Vf): Range 2.2V to 3.8V
Millicandela Rating: 120mcd to 60500mcd
Viewing Angle: 15° to 30°
Wavelength - Dominant: 525nm to 568nm
Height (Max): 8.60mm to 13.30mm

Substitutes are valid when all critical parameters match and variable parameters remain within the design specifications of the target application circuit.

Parameter Comparison

Part Number	Manufacturer	Vf (Typ)	mcd Rating	Viewing Angle	Wavelength - Dominant	Height (Max)	Lens Size	RoHS Status	Inventory
WP1503SGC	Kingbright	2.2V	200mcd	30°	568nm	8.60mm	5mm, T-1 3/4	ROHS3	1375 Pcs
5219465F	Dialight	2.3V	120mcd	24°	565nm	8.81mm	4.83mm Dia	ROHS3	2623 Pcs
5219947F	Dialight	3.8V	4200mcd	30°	527nm	9.65mm	5.00mm Dia	ROHS3	1050 Pcs
C503B-GAS-CB0F0791	CreeLED, Inc.	3.2V	53650mcd	15°	527nm	13.30mm	5.00mm Dia	RoHS Compliant	2829 Pcs
HLMP-CM1A-560DD	Broadcom Limited	3.2V	60500mcd	15°	525nm	8.90mm	5mm, T-1 3/4	ROHS3	1295 Pcs
HLMP-CM1G-350DD	Broadcom Limited	3.1V	43000mcd	15°	525nm	8.90mm	5mm, T-1 3/4	ROHS3	13534 Pcs
HLMP-CM3A-Z10DD	Broadcom Limited	3.2V	16500mcd	30°	525nm	8.90mm	5mm, T-1 3/4	ROHS3	2100 Pcs
HLMP-CM3A-Z1CDD	Broadcom Limited	3.2V	16500mcd	30°	525nm	8.90mm	5.00mm Dia	ROHS3	825 Pcs
HLMP-CM3B-Z10DD	Broadcom Limited	3.2V	16500mcd	30°	525nm	12.25mm	5mm, T-1 3/4	ROHS3	19428 Pcs
LTL2R3TGK	Lite-On Inc.	3.5V	8000mcd	20°	525nm	8.70mm	5mm, T-1 3/4	ROHS3	5344 Pcs
LTL2T3TGK6	Lite-On Inc.	3.5V	4500mcd	30°	525nm	8.70mm	5mm, T-1 3/4	ROHS3	18518 Pcs

Engineering Selection Recommendations

Direct Substitutes (Lowest Electrical Variation):

The 5219465F (Dialight) represents the closest electrical substitute with forward voltage of 2.3V, differing only 0.1V from the WP1503SGC. This part maintains ROHS3 compliance and through-hole radial mounting. The 120mcd brightness is lower than the original 200mcd, requiring circuit evaluation for brightness-critical applications.

Broadcom HLMP-CM3 Series (Moderate Electrical Variation):

The HLMP-CM3A-Z10DD and HLMP-CM3A-Z1CDD both operate at 3.2V forward voltage with 16500mcd brightness and 30° viewing angle matching the original. These parts are ROHS3 compliant with T-1 3/4 packaging. The higher forward voltage requires circuit redesign for current-limiting resistor values. High inventory availability (2100 and 825 Pcs respectively) supports supply chain continuity.

High-Brightness Alternatives (Significant Electrical Variation):

The HLMP-CM1A-560DD and HLMP-CM1G-350DD (Broadcom) provide 60500mcd and 43000mcd respectively at 3.2V and 3.1V forward voltage. These parts are suitable only for applications where increased brightness and narrower 15° viewing angle are acceptable. ROHS3 compliance is maintained.

Lower-Brightness Alternatives:

The LTL2R3TGK (Lite-On) offers 8000mcd at 3.5V with 20° viewing angle. The LTL2T3TGK6 provides 4500mcd at 3.5V with 30° viewing angle. Both maintain ROHS3 compliance and T-1 3/4 packaging. These are suitable for applications where reduced brightness is acceptable and circuit voltage tolerance permits 3.5V operation.

High-Brightness CreeLED Option:

The C503B-GAS-CB0F0791 delivers 53650mcd at 3.2V but with 15° narrow viewing angle and 13.30mm height. This part is RoHS Compliant (not ROHS3 designation). Selection requires verification that increased height does not conflict with PCB layout constraints.

All substitute parts maintain green color, clear lens transparency, round domed lens style, and through-hole radial mounting configuration. Selection must be based on circuit voltage tolerance, brightness requirements, and viewing angle specifications of the target application.

Frequently Asked Questions (FAQ)

Q: Can I substitute the WP1503SGC with any green LED from the list?

A: No. Substitution is valid only when the target application circuit can accommodate the forward voltage (Vf) of the substitute part. The WP1503SGC operates at 2.2V; most substitutes operate at 3.1V to 3.8V. Current-limiting resistor values must be recalculated for different forward voltages. The 5219465F at 2.3V requires minimal circuit modification.

Q: What is the impact of different millicandela ratings?

A: Millicandela (mcd) rating determines LED brightness. The WP1503SGC provides 200mcd. Substitutes range from 120mcd to 60500mcd. Lower mcd values (120mcd, 4500mcd, 8000mcd) reduce brightness; higher values (16500mcd to 60500mcd) increase brightness. Selection depends on application visibility requirements. Brightness changes do not affect electrical compatibility but impact visual performance.

Q: Does viewing angle affect substitution compatibility?

A: Viewing angle determines the cone of light emission. The WP1503SGC has 30° viewing angle. Substitutes range from 15° to 30°. Narrower angles (15°) concentrate light in a smaller cone; wider angles (30°) distribute light more broadly. Selection depends on application requirements for light distribution. Viewing angle does not affect electrical circuit compatibility.

Q: Are all substitute parts RoHS compliant?

A: The WP1503SGC is ROHS3 compliant. Most substitutes are also ROHS3 compliant. The C503B-GAS-CB0F0791 is listed as RoHS Compliant without ROHS3 designation. For applications requiring ROHS3 certification, verify compliance documentation before selection.

Q: Can I use the high-brightness Broadcom parts as direct replacements?

A: The HLMP-CM1A-560DD (60500mcd) and HLMP-CM1G-350DD (43000mcd) are electrically compatible at 3.2V and 3.1V respectively, but require circuit resistor recalculation. The significantly higher brightness may cause over-illumination in the application. These parts are suitable only when increased brightness is acceptable and circuit voltage tolerance permits 3.1V to 3.2V operation.

Q: What is the difference between T-1 3/4 and 5mm lens size designations?

A: T-1 3/4 and 5mm refer to the same physical lens diameter (5.00mm). Both designations describe the same package size. Parts listed as "5mm, T-1 3/4" or "5.00mm Dia" are physically equivalent for through-hole mounting.

Q: Does wavelength affect substitution?

A: Wavelength determines the perceived color shade. The WP1503SGC has 568nm dominant wavelength (yellow-green). Substitutes range from 525nm to 568nm (pure green to yellow-green). Wavelength differences may be perceptible to the human eye but do not affect electrical circuit compatibility. Selection depends on application color perception requirements.

Q: What inventory considerations should I evaluate?

A: Current inventory levels are: WP1503SGC (1375 Pcs), 5219465F (2623 Pcs), HLMP-CM1G-350DD (13534 Pcs), HLMP-CM3B-Z10DD (19428 Pcs), LTL2T3TGK6 (18518 Pcs). Higher inventory levels support supply chain continuity. Parts with lower inventory (825 Pcs for HLMP-CM3A-Z1CDD, 1050 Pcs for 5219947F) may have longer lead times for reorder.

Q: Can I mix different substitute parts in the same circuit?

A: Mixing parts with different forward voltages in series is not recommended without individual current-limiting resistors. If multiple LEDs are used in parallel, each must have its own current-limiting resistor to ensure equal current distribution regardless of forward voltage variation. Circuit design must account for the specific Vf of each part used.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message