NAG105PB 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The NAG105PB is a single-character 7-segment LED display module manufactured by Stanley Electric Co. It features a 1-inch green display with common anode configuration, designed for numeric and alphanumeric applications. The device operates at 4.4V forward voltage with a 20mA test current and delivers 8mcd brightness output.

The NAG105PB is classified as obsolete. Identifying equivalent substitute parts is necessary to support ongoing production requirements, maintenance operations, and system redesigns where original inventory is depleted or unavailable.

Substiute Parts

NAG105PB

Stanley Electric CoIn Stock: 756NAG105PB Datasheet

Current PartRFQ

LTS-10804G

LITEONIn Stock: 806LTS-10804G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NAG105PB is determined by the following critical parameters:

Primary Compatibility Criteria:

• Display Type: 7-Segment (required match)
• Number of Characters: 1 (required match)
• Digit/Alpha Size: 1.00 inch / 25.40mm (required match)
• Common Pin Configuration: Common Anode (required match)
• Color: Green (required match)
• Wavelength - Peak: 565nm (required match)
• Package / Case: 14-DIP (required match)

Secondary Compatibility Criteria:

• Voltage - Forward (Vf) Typical: Within acceptable operating range for the application circuit
• Current - Test: 20mA standard for this category
• Millicandela Rating: Brightness level suitable for intended application
• Power Dissipation (Max): Within thermal design limits
• Physical Dimensions: Mechanical fit within enclosure or PCB footprint

The LTS-10804G from LITEON meets all primary compatibility criteria and operates within acceptable secondary parameter ranges for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: LTS-10804G (LITEON)

The LTS-10804G is the qualified substitute for the obsolete NAG105PB. Selection is based on the following engineering factors:

Compliance and Availability:

• LTS-10804G holds Active product status, ensuring continued manufacturing and supply chain availability
• LTS-10804G is ROHS3 compliant, meeting current environmental and regulatory requirements
• NAG105PB is classified as Obsolete, with no ongoing manufacturing support

Electrical Compatibility:

• Forward voltage differential of 0.2V (4.4V vs. 4.2V) is within standard circuit tolerance for common anode 7-segment display applications
• Test current specification is identical at 20mA
• Maximum power dissipation is 6mW lower, indicating improved thermal efficiency

Optical and Mechanical Compatibility:

• Wavelength peak matches at 565nm (green spectrum)
• Physical dimensions are identical: 1.299" H × 0.898" W × 0.354" D
• Package configuration is 14-DIP with identical pinout for common anode operation
• Brightness rating of 6mcd is lower than the original 8mcd; verify that application brightness requirements are satisfied

Application Considerations:

• Direct pin-for-pin substitution is supported for common anode circuit designs
• No circuit redesign is required
• Thermal design margins improve due to lower power dissipation
• Brightness verification is necessary only if the original design operated at minimum brightness thresholds

Frequently Asked Questions (FAQ)

Q: Can the LTS-10804G replace the NAG105PB in existing designs without circuit modification?

A: Yes. Both devices are common anode 7-segment displays with identical pinout, package configuration (14-DIP), and physical dimensions. No circuit redesign is required for direct substitution.

Q: What is the significance of the 0.2V forward voltage difference?

A: The LTS-10804G operates at 4.2V compared to the NAG105PB at 4.4V. This 0.2V difference is within standard tolerance for common anode LED display circuits. Most designs using current-limiting resistors will accommodate this variation without performance degradation.

Q: The LTS-10804G has a lower brightness rating (6mcd vs. 8mcd). Is this acceptable?

A: Brightness acceptability depends on the specific application requirements. If the original design operated with brightness margin above the minimum visibility threshold, the 2mcd reduction will not affect performance. If the original design operated near minimum brightness limits, brightness verification testing is necessary before production implementation.

Q: What does "Common Anode" configuration mean for substitution purposes?

A: Common Anode means all LED cathodes are internally connected to a common pin, with individual anodes for each segment. Both the NAG105PB and LTS-10804G use this configuration, ensuring electrical compatibility. Designs using Common Cathode displays cannot use these substitutes.

Q: Why is the NAG105PB classified as Obsolete?

A: Obsolete status indicates that the manufacturer (Stanley Electric Co) has discontinued production and no longer provides supply or technical support. The LTS-10804G, with Active status, is the recommended alternative for new production and ongoing applications.

Q: Are there any compliance differences between the two parts?

A: The LTS-10804G is ROHS3 compliant, meeting current environmental regulations for hazardous substance restrictions. The NAG105PB compliance status is not specified in available documentation. For applications requiring environmental compliance certification, the LTS-10804G is the appropriate choice.

Q: What is the package variant notation "10 Leads" for the LTS-10804G?

A: The notation indicates the LTS-10804G uses a 14-DIP package with 10 functional leads (4 leads may be unused or structural). This does not affect substitution compatibility, as the pinout for common anode operation remains identical to the NAG105PB.

Q: Can the LTS-10804G be used in applications requiring the exact 8mcd brightness of the NAG105PB?

A: If the application design specifically requires 8mcd brightness output, the LTS-10804G at 6mcd may not meet the specification. Verify brightness requirements against the original design documentation before substitution.