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WP7104GD Equivalent & Substitute Parts
Part Overview
The WP7104GD is a green diffused T-1 through-hole LED manufactured by Kingbright, designed for LED indication applications. This component features a 3mm lens with a domed top, 568nm dominant wavelength, and 2.2V forward voltage at 20mA test current. The part is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Substitute parts must maintain compatibility with the original electrical specifications and mechanical form factor while offering active product status and continued availability.
Substiute Parts
Key Parameters
| Parameter | WP7104GD Value | Criticality for Substitution |
|---|---|---|
| Color | Green | Critical |
| Lens Transparency | Diffused | Critical |
| Lens Size | 3mm, T-1 | Critical |
| Mounting Type | Through Hole | Critical |
| Voltage - Forward (Vf) (Typ) | 2.2V | High |
| Current - Test | 20mA | High |
| Wavelength - Dominant | 568nm | High |
| Millicandela Rating | 20mcd | Medium |
| Viewing Angle | 40° | Medium |
| Package / Case | Radial | Critical |
| RoHS Status | ROHS3 Compliant | High |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | Medium |
Substitute Part Grouping Explanation
Substitute parts for the WP7104GD are grouped based on strict adherence to the following critical parameters:
Critical Matching Parameters:
- Color: Green
- Lens Transparency: Diffused
- Lens Size: 3mm, T-1
- Mounting Type: Through Hole
- Package / Case: Radial
High-Priority Matching Parameters:
- Voltage - Forward (Vf) (Typ): 2.0V to 2.2V range
- Current - Test: 20mA nominal
- Wavelength - Dominant: 565nm to 575nm range
- RoHS Status: ROHS3 Compliant
Medium-Priority Matching Parameters:
- Millicandela Rating: 1.6mcd to 50mcd acceptable range
- Viewing Angle: 35° to 60° acceptable range
- Moisture Sensitivity Level (MSL): 1 (Unlimited)
Substitutes are identified where the critical parameters align with the original part specification. Variations in millicandela rating and viewing angle are permissible when the core electrical and mechanical characteristics remain compatible.
Parameter Comparison
| Parameter | WP7104GD | WP710A10GD | 264-7SYGD/S530-E2 | 3GD-F | HLMP-1503-D00FG | HLMP-1790 |
|---|---|---|---|---|---|---|
| Manufacturer | Kingbright | Kingbright | Everlight Electronics Co Ltd | Bivar Inc. | Broadcom Limited | Broadcom Limited |
| Product Status | Obsolete | Active | Active | Active | Active | Active |
| Color | Green | Green | Yellow-Green | Green | Green | Green |
| Lens Transparency | Diffused | Diffused | Diffused | Diffused | Diffused | Diffused |
| Lens Size | 3mm, T-1 | 3mm, T-1 | 2.90mm Dia | 3mm, T-1 | 3mm, T-1 | 3mm, T-1 |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Voltage - Forward (Vf) (Typ) | 2.2V | 2.2V | 2V | 2.1V | 2.1V | 1.9V |
| Current - Test | 20mA | 20mA | 20mA | 20mA | 10mA | 2mA |
| Wavelength - Dominant | 568nm | 568nm | 573nm | Not Specified | 569nm | 569nm |
| Wavelength - Peak | 565nm | 565nm | 575nm | 568nm | 565nm | 565nm |
| Millicandela Rating | 20mcd | 25mcd | 50mcd | 25mcd | 4.2mcd | 2.3mcd |
| Viewing Angle | 40° | 40° | 60° | 35° | 60° | 50° |
| Package / Case | Radial | Radial | Radial | Radial | Radial | Radial |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
Engineering Selection Recommendations
Primary Substitute: WP710A10GD
The WP710A10GD is the recommended primary substitute for the obsolete WP7104GD. Both components are manufactured by Kingbright and share identical critical specifications: 3mm T-1 diffused green lens, through-hole radial mounting, 2.2V forward voltage, and 20mA test current. The WP710A10GD maintains active product status with 20,548 pieces in stock, ensuring long-term availability. The millicandela rating increases from 20mcd to 25mcd, providing enhanced brightness while maintaining full electrical and mechanical compatibility. Both parts are ROHS3 compliant with MSL 1 (Unlimited) rating.
Secondary Substitutes: 3GD-F and 264-7SYGD/S530-E2
The Bivar Inc. 3GD-F offers active product status with compatible green diffused T-1 through-hole configuration. Forward voltage is 2.1V at 20mA test current, within acceptable tolerance of the original 2.2V specification. Millicandela rating is 25mcd with 35° viewing angle. The 264-7SYGD/S530-E2 from Everlight Electronics provides yellow-green wavelength (573nm dominant) with higher brightness (50mcd) but operates at 2V forward voltage. This part is suitable for applications where wavelength shift from pure green to yellow-green is acceptable and increased brightness is beneficial.
Alternative Substitutes: HLMP-1790 and HLMP-1503-D00FG
The Broadcom Limited HLMP-1790 and HLMP-1790-A0002 provide green diffused T-1 through-hole configuration with 1.9V forward voltage and significantly reduced test current (2mA). These parts are suitable for low-power applications where the original 20mA specification cannot be accommodated. The HLMP-1503-D00FG operates at 2.1V forward voltage with 10mA test current, offering intermediate power consumption between the primary substitute and the HLMP-1790 series.
Not Recommended: HLMP-1640, HLMP-1640-B00A1, HLMP-1640-B00A2, and HLMP-1641
These Broadcom Limited parts feature significantly different forward voltage specifications (5V and 12V respectively) and are not suitable as direct substitutes for the 2.2V WP7104GD without circuit redesign. The HLMP-1640-B00A1 and HLMP-1640-B00A2 employ right-angle mounting, deviating from the radial through-hole configuration of the original part.
All recommended substitutes maintain ROHS3 compliance and MSL 1 (Unlimited) rating, ensuring regulatory and environmental compatibility with the original component.
Frequently Asked Questions (FAQ)
Q: Can the WP710A10GD directly replace the WP7104GD without circuit modification?
A: Yes. The WP710A10GD is a direct replacement. Both components share identical forward voltage (2.2V), test current (20mA), lens configuration (3mm T-1 diffused green), and mounting type (through-hole radial). The increased millicandela rating (25mcd versus 20mcd) provides enhanced brightness without requiring circuit changes.
Q: What is the primary reason for substituting the WP7104GD?
A: The WP7104GD is classified as obsolete. The WP710A10GD provides equivalent functionality with active product status and assured long-term availability, making it the preferred choice for new designs and production continuity.
Q: Are there differences in mechanical dimensions between the WP7104GD and WP710A10GD?
A: Both parts share identical mechanical specifications: 2.90mm diameter lens, 3mm T-1 form factor, and 5.90mm maximum height. They are mechanically interchangeable in through-hole PCB applications.
Q: Can the 264-7SYGD/S530-E2 be used as a substitute?
A: The 264-7SYGD/S530-E2 is functionally compatible but introduces a wavelength shift from pure green (568nm) to yellow-green (573nm). This part is suitable only for applications where the color shift is acceptable. The forward voltage is 2V (within tolerance of 2.2V), and test current is 20mA (matching the original specification).
Q: What is the difference between the HLMP-1790 and the primary substitute WP710A10GD?
A: The HLMP-1790 operates at significantly lower power (1.9V forward voltage, 2mA test current) compared to the WP710A10GD (2.2V, 20mA). The HLMP-1790 is suitable only for low-power indicator applications and requires circuit redesign. The WP710A10GD maintains the original power specification and requires no circuit modification.
Q: Why are HLMP-1640 and HLMP-1641 not recommended as substitutes?
A: These parts operate at 5V and 12V forward voltage respectively, requiring significant circuit redesign. They are not direct substitutes for the 2.2V WP7104GD and should be considered only if the application circuit is modified to accommodate higher voltage operation.
Q: What packaging options are available for substitute parts?
A: The WP710A10GD is available in bulk packaging. The HLMP-1790-A0002 is available in cut tape (CT) packaging. The 3GD-F and 264-7SYGD/S530-E2 are available in bulk packaging. Packaging selection depends on production volume and assembly requirements.
Q: Are all substitute parts RoHS3 compliant?
A: Yes. All recommended substitute parts (WP710A10GD, 3GD-F, 264-7SYGD/S530-E2, HLMP-1790, HLMP-1790-A0002, and HLMP-1503-D00FG) are ROHS3 compliant with MSL 1 (Unlimited) rating, ensuring regulatory compliance and environmental compatibility.
Q: What is the viewing angle difference between the WP7104GD and substitute parts?
A: The WP7104GD has a 40° viewing angle. Substitute parts range from 35° (3GD-F) to 60° (264-7SYGD/S530-E2, HLMP-1503-D00FG, HLMP-1640 series). Wider viewing angles provide broader light distribution, while narrower angles concentrate light output. Selection depends on application requirements.
Q: Can multiple substitute parts be used interchangeably in the same application?
A: The WP710A10GD is the only true direct replacement requiring no circuit modification. Other substitutes (3GD-F, 264-7SYGD/S530-E2, HLMP-1790 series, HLMP-1503-D00FG) have different electrical specifications and are not interchangeable without circuit redesign or application-specific validation.
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