WB201-NFG24H Equivalent & Substitute Parts

Part Overview

The WB201-NFG24H is an active T-1 3/4 sub-miniature LED lamp with wedge base configuration manufactured by Visual Communications Company (VCC). This green LED operates at 24V forward voltage and delivers 780 millicandela output at 520nm wavelength. The component is designed as a direct replacement for multiple wedge base lamp applications in general purpose lighting environments. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in qualified applications.

Substiute Parts

WB201-NFG24H

Visual Communications Company - VCCIn Stock: 785WB201-NFG24H Datasheet

Current PartRFQ

VC1511A35UG3

Visual Communications Company - VCCIn Stock: 1310VC1511A35UG3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the WB201-NFG24H are qualified based on strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Size / Dimension: T-1 3/4 (physical form factor)
• Base Type: Wedge (socket compatibility)
• Voltage - Forward (Vf): 24V (circuit voltage requirement)
• Color: Green (optical output specification)
• Configuration: Single (LED count)

Allowable Parameter Variance:

• Wavelength: 520nm to 525nm (green spectrum tolerance within visual communications standards)
• Millicandela Rating: 780mcd to 850mcd (brightness variation acceptable for equivalent performance)

The substitute part VC1511A35UG3 meets all mandatory matching parameters and operates within allowable variance for wavelength and luminous intensity, qualifying it as a parametric equivalent for the WB201-NFG24H.

Parameter Comparison

Engineering Selection Recommendations

WB201-NFG24H Selection Criteria:

• Primary choice when 780mcd brightness specification is required
• Preferred for applications with strict 520nm wavelength specification
• Current inventory: 740 pieces available

VC1511A35UG3 Selection Criteria:

• Suitable for applications tolerant of 525nm wavelength (5nm variance from primary part)
• Appropriate when higher brightness output (850mcd) is beneficial or acceptable
• Suitable for incandescent replacement and indicator light applications
• Higher inventory availability: 1203 pieces in stock
• Moisture sensitivity level MSL 1 (Unlimited) provides enhanced environmental tolerance

Both parts maintain identical compliance status (ROHS3 Compliant, REACH Unaffected, EAR99 classification) and are manufactured by the same supplier, ensuring consistent quality and support. Selection between these parts depends on application-specific brightness and wavelength requirements within the stated tolerances.

Frequently Asked Questions (FAQ)

Q: Can VC1511A35UG3 directly replace WB201-NFG24H in any application?

A: VC1511A35UG3 is a parametric equivalent when the application tolerates 525nm wavelength (5nm variance) and 850mcd brightness (70mcd increase). Both parts share identical size, base type, voltage, color, and configuration. Substitution is valid for applications where these parameter variations are acceptable.

Q: What is the significance of the 5nm wavelength difference between 520nm and 525nm?

A: Both wavelengths fall within the green spectrum for visual communications applications. The 5nm difference represents a minor shift within acceptable green color specification. Applications with strict spectral requirements should specify the exact wavelength needed.

Q: Why does VC1511A35UG3 have higher millicandela rating (850mcd vs 780mcd)?

A: The 70mcd increase represents approximately 9% higher luminous intensity. This higher brightness is acceptable in equivalent applications and may be beneficial for visibility-critical indicator light functions. Applications with maximum brightness constraints should retain the WB201-NFG24H.

Q: Are both parts suitable for the same socket and circuit?

A: Yes. Both parts feature T-1 3/4 form factor, wedge base configuration, and 24V forward voltage. They are mechanically and electrically compatible with identical socket interfaces and circuit voltage requirements.

Q: What does MSL 1 (Unlimited) on VC1511A35UG3 indicate?

A: Moisture Sensitivity Level 1 (Unlimited) means the component has no moisture sensitivity restrictions and requires no special handling or storage conditions. This provides operational flexibility compared to components with higher MSL ratings.

Q: How should I choose between these two parts for new designs?

A: Selection depends on application requirements: choose WB201-NFG24H for strict 520nm wavelength specification or when 780mcd brightness is a maximum constraint; choose VC1511A35UG3 for applications benefiting from higher brightness, enhanced moisture tolerance, or when wavelength tolerance of ±5nm is acceptable.