74S-NWR5H-CR LED Panel Indicator Equivalent & Substitute Parts

Part Overview

The 74S-NWR5H-CR is a red LED panel indicator manufactured by Visual Communications Company (VCC), designed for 5V applications with a 0.31" (7.92mm) round panel cutout. This component is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system support, maintenance, and new design implementations where legacy compatibility is required.

The 74S series LED indicator features a clear red lens with a 30° viewing angle, PC pin termination, and 2800mcd brightness rating. Due to its obsolete status, sourcing original units may present supply chain challenges, necessitating evaluation of active alternative components that meet the same electrical and mechanical requirements.

Substiute Parts

74S-NWR5H-CR

Visual Communications Company - VCCIn Stock: 105374S-NWR5H-CR Datasheet

Current PartRFQ

6561102303F

DialightIn Stock: 8666561102303F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 74S-NWR5H-CR requires strict alignment across the following critical parameters:

Electrical Compatibility:

• Voltage rating must be 5V DC
• Lamp color must be red
• Lens color must be red with clear transparency
• Peak wavelength in the red spectrum (634nm reference)

Mechanical Compatibility:

• Panel cutout shape must be round
• Lens style must be round with flat top configuration
• Viewing angle and brightness characteristics should support the intended application

Regulatory & Environmental:

• RoHS3 compliance required
• ECCN and HTSUS classifications must align with export and tariff requirements

The substitute part 6561102303F (Dialight 656 series) meets the core electrical requirements (5V red LED with clear lens) and regulatory compliance (ROHS3). However, mechanical differences exist in panel cutout dimensions (0.50" vs. 0.31") and termination style (wire leads vs. PC pin), which require physical integration assessment.

Parameter Comparison

Engineering Selection Recommendations

Primary Consideration: Product Status

The 74S-NWR5H-CR is obsolete, while the 6561102303F (Dialight 656 series) is active production. For new designs or long-term system support, the active Dialight component provides supply chain continuity and manufacturing support.

Electrical Equivalence

Both components operate at 5V with red LED technology and clear lens configuration. The Dialight 6561102303F is rated at 16mA maximum current versus the VCC 22mA rating. This difference is acceptable for standard 5V red LED panel indicator applications, as the lower current rating reflects conservative design margins typical of active production components.

Mechanical Integration

The primary substitution constraint is mechanical:

• Panel cutout diameter differs (0.31" vs. 0.50"), requiring panel modification or mechanical adapter
• Termination changes from PC pin to wire leads, requiring circuit board connection redesign

Regulatory Compliance

Both components are ROHS3 compliant and carry identical ECCN (EAR99) and HTSUS (8541.41.0000) classifications, ensuring regulatory equivalence for procurement and export purposes.

Brightness Consideration

The Dialight component provides 1150mcd versus the VCC 2800mcd. For applications where the original 2800mcd brightness is critical to system function, this reduction must be evaluated against actual visibility requirements in the intended operating environment.

Frequently Asked Questions (FAQ)

Q: Can the 6561102303F directly replace the 74S-NWR5H-CR without modifications?

A: Electrical substitution is valid; however, mechanical integration requires modification. The panel cutout diameter differs (0.31" vs. 0.50"), and the termination style changes from PC pin to wire leads. Physical panel drilling and circuit board connection changes are necessary.

Q: What is the impact of the 16mA current rating on the 6561102303F versus the 22mA rating of the original?

A: The lower current rating on the Dialight component is acceptable for 5V red LED applications. This reflects standard design practice for active production components and does not indicate reduced reliability or performance in typical panel indicator circuits.

Q: Are there brightness differences between these components?

A: Yes. The 74S-NWR5H-CR provides 2800mcd while the 6561102303F provides 1150mcd. Assess whether the original brightness specification is functionally required for your application. In many panel indicator applications, 1150mcd is sufficient for visual indication in standard lighting conditions.

Q: What are the termination implications of switching from PC pin to wire leads?

A: PC pin termination allows direct insertion into printed circuit board holes. Wire leads require soldering or connector attachment to the circuit board. This represents a design change requiring circuit board layout modification and assembly process adjustment.

Q: Are both components RoHS compliant?

A: Yes. Both the 74S-NWR5H-CR and 6561102303F are ROHS3 compliant, ensuring regulatory equivalence for environmental and procurement standards.

Q: What is the viewing angle difference between these components?

A: The original 74S-NWR5H-CR specifies a 30° viewing angle. The Dialight 6561102303F does not provide a viewing angle specification in the available data. Confirm viewing angle requirements for your application before final selection.

Q: Can the panel cutout be modified to accommodate the larger 0.50" diameter of the Dialight component?

A: Yes, if the panel material and structural integrity permit enlargement from 0.31" to 0.50". This is a mechanical design decision dependent on your specific panel construction and available space.