WP56BID Equivalent & Substitute Parts Reference

Part Overview

The WP56BID is a red diffused LED indicator manufactured by Kingbright, designed for through-hole mounting applications. This T-1 3/4 (5mm) LED features a 14V forward voltage rating with flashing capability and 25mcd brightness output at 617nm dominant wavelength. The component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are necessary when the WP56BID reaches end-of-life inventory depletion, when alternative packaging formats are required for manufacturing processes, or when design specifications allow for compatible alternatives with different electrical characteristics within acceptable operating parameters.

Key Parameters

Parameter	WP56BID Value	Substitution Relevance
Lens Size	5mm, T-1 3/4	Critical - Physical form factor
Mounting Type	Through Hole Radial	Critical - PCB compatibility
Color	Red	Critical - Visual indication
Lens Transparency	Diffused	Critical - Light distribution
Voltage - Forward (Vf)	14V	Major - Circuit design dependent
Millicandela Rating	25mcd	Major - Brightness specification
Wavelength - Dominant	617nm	Major - Color specification
Features	Flashing	Major - Functional requirement
RoHS Status	ROHS3 Compliant	Regulatory - Compliance requirement

Substitute Part Grouping Explanation

Substitution compatibility for the WP56BID is determined by alignment across the following critical parameters:

Physical Compatibility Requirements:

Lens size must be 5mm T-1 3/4 or equivalent 5mm diameter
Mounting type must be through-hole radial configuration
Height must accommodate PCB clearance constraints

Optical Compatibility Requirements:

Color must be red
Lens transparency must be diffused
Wavelength dominant range acceptable: 617nm to 637nm
Millicandela rating must support visibility requirements (minimum 2.1mcd, maximum 70mcd)

Electrical Compatibility Requirements:

Forward voltage (Vf) determines circuit design applicability
Current rating must be compatible with driver circuit
Flashing feature is application-specific and not required for all substitutions

Regulatory Compliance:

RoHS3 compliance mandatory
REACH unaffected status required
MSL 1 (Unlimited) moisture sensitivity

The substitute parts listed below meet the core physical and optical requirements. Electrical parameters vary and must be evaluated against specific circuit design constraints.

Parameter Comparison

Part Number	Manufacturer	Lens Size	Mounting	Color	Lens Transparency	Vf (Typ)	mcd Rating	Wavelength Dom.	Height Max	RoHS3
WP56BID	Kingbright	5mm T-1 3/4	Through Hole Radial	Red	Diffused	14V	25mcd	617nm	8.60mm	Yes
5219240F	Dialight	5.00mm	Through Hole Radial	Red	Diffused	—	6.3mcd	—	8.94mm	Yes
5219672F	Dialight	4.75mm	Through Hole Radial	Red	Diffused	2V	60mcd	623nm	8.21mm	Yes
HLMP-3301-F00B2	Broadcom Limited	—	Through Hole Right Angle	Red	Diffused, Tinted	1.9V	5.4mcd	—	—	Yes
HLMP-3301-F00DD	Broadcom Limited	5mm T-1 3/4	Through Hole Radial	Red	Diffused	1.9V	5.4mcd	626nm	9.19mm	Yes
HLMP-3351	Broadcom Limited	5mm T-1 3/4	Through Hole Radial	Red	Diffused	1.9V	5.4mcd	626nm	6.35mm	Yes
HLMP-3351-D0000	Broadcom Limited	5mm T-1 3/4	Through Hole Radial	Red	Diffused	1.9V	2.1mcd	626nm	6.35mm	Yes
HLMP-3351-D0002	Broadcom Limited	5mm T-1 3/4	Through Hole Radial	Red	Diffused	1.9V	2.1mcd	626nm	6.35mm	Yes
HLMP-3600-D00B2	Broadcom Limited	—	Through Hole Right Angle	Red	Diffused, Tinted	5V	2.1mcd	—	—	Yes
HLMP-D101	Broadcom Limited	5mm T-1 3/4	Through Hole Radial	Red	Diffused	1.8V	70mcd	637nm	9.19mm	Yes

Engineering Selection Recommendations

Direct Substitution Candidates (Radial Through-Hole, 5mm T-1 3/4):

The following parts maintain identical physical form factor and mounting configuration:

HLMP-3351-D0002: Broadcom Limited, Cut Tape packaging, 1.9V forward voltage, 2.1mcd, 626nm wavelength. Suitable for low-brightness indicator applications with reduced power consumption. Height 6.35mm provides compact PCB integration.
HLMP-3351-D0000: Broadcom Limited, Bulk packaging, 1.9V forward voltage, 2.1mcd, 626nm wavelength. Equivalent electrical and optical characteristics to D0002 variant with alternative packaging format.
HLMP-3351: Broadcom Limited, Bulk packaging, 1.9V forward voltage, 5.4mcd, 626nm wavelength. Moderate brightness output suitable for standard indication applications. Height 6.35mm.
HLMP-3301-F00DD: Broadcom Limited, Cut Tape packaging, 1.9V forward voltage, 5.4mcd, 626nm wavelength. Radial configuration with 9.19mm height. Wavelength and brightness comparable to HLMP-3351 series.
HLMP-D101: Broadcom Limited, Bulk packaging, 1.8V forward voltage, 70mcd, 637nm wavelength. High-brightness alternative for applications requiring enhanced visibility. Wavelength shift to 637nm acceptable within red spectrum range.
5219672F: Dialight, Bulk packaging, 2V forward voltage, 60mcd, 623nm wavelength. High-brightness output with slightly reduced lens diameter (4.75mm). Wavelength within acceptable red spectrum.

Alternative Mounting Configuration (Right-Angle Through-Hole):

HLMP-3301-F00B2: Broadcom Limited, Bulk packaging, 1.9V forward voltage, 5.4mcd. Right-angle mounting configuration for horizontal PCB mounting applications.
HLMP-3600-D00B2: Broadcom Limited, Bulk packaging, 5V forward voltage, 2.1mcd. Right-angle mounting with higher voltage rating for 5V circuit designs.

Limited Compatibility (Reduced Brightness):

5219240F: Dialight, Bulk packaging, 6.3mcd, T-1 3/4 form factor. Significantly reduced brightness (6.3mcd vs. 25mcd) limits application scope to low-visibility indicator requirements.

Product Status Consideration:

HLMP-D150: onsemi, Obsolete product status. Not recommended for new designs or long-term production applications.

All recommended substitutes maintain RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1) consistent with the WP56BID.

Frequently Asked Questions (FAQ)

Q: Can HLMP-3351-D0002 directly replace WP56BID in existing designs?

A: Physical compatibility is confirmed (5mm T-1 3/4 radial through-hole). Electrical compatibility requires circuit evaluation. The HLMP-3351-D0002 operates at 1.9V forward voltage versus WP56BID's 14V, necessitating resistor recalculation in series-connected driver circuits. Brightness reduction from 25mcd to 2.1mcd may impact visibility requirements.

Q: What is the primary difference between HLMP-3351 variants (D0000, D0002)?

A: Both variants share identical electrical specifications (1.9V, 10mA test current) and optical characteristics (2.1mcd, 626nm). The distinction is packaging format: D0000 supplied in Bulk, D0002 in Cut Tape (CT). Selection depends on manufacturing process requirements and inventory management.

Q: Why do some substitute parts show "—" for forward voltage?

A: Forward voltage data was not provided in the component specifications. Parts with missing electrical parameters require datasheet consultation before circuit integration. This applies to 5219240F and HLMP-3301-F00B2.

Q: Is HLMP-D101 suitable for high-brightness applications?

A: Yes. HLMP-D101 provides 70mcd output, the highest among listed substitutes, compared to WP56BID's 25mcd. Wavelength is 637nm (versus 617nm), within acceptable red spectrum range. Forward voltage is 1.8V at 20mA test current, requiring circuit redesign from the original 14V specification.

Q: Can right-angle mounted LEDs (HLMP-3301-F00B2, HLMP-3600-D00B2) replace radial WP56BID?

A: Physical form factor is incompatible. Right-angle mounting orients the LED perpendicular to the PCB, whereas radial mounting positions it parallel. PCB layout and mechanical clearance constraints must be re-evaluated. Electrical specifications also differ (1.9V and 5V respectively).

Q: What compliance certifications apply to all substitute parts?

A: All listed substitutes maintain RoHS3 compliance and REACH unaffected status, matching WP56BID regulatory requirements. ECCN classification is EAR99 and HTSUS code 8541.41.0000 for all parts. MSL rating is 1 (Unlimited) across all alternatives.

Q: Does the flashing feature of WP56BID exist in substitute parts?

A: No. The WP56BID flashing feature is not replicated in any listed substitute. All alternatives are standard continuous-operation LEDs. Flashing functionality must be implemented through external circuit design if required.

Q: Which substitute offers the closest brightness match to WP56BID?

A: 5219672F (Dialight) provides 60mcd, the closest high-brightness alternative to WP56BID's 25mcd. HLMP-D101 (70mcd) exceeds the original specification. Both require circuit voltage adjustment (2V and 1.8V respectively versus 14V).

Q: Are there inventory considerations for substitute selection?

A: Yes. Inventory levels vary significantly: HLMP-3301-F00DD has 43,381 units in stock (highest availability), while HLMP-3351-D0002 has 10,091 units. 5219240F and 5219672F (Dialight) show 2,526 and 2,314 units respectively. Availability should factor into long-term supply chain planning.

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