NAR161H-F 7-Segment LED Display Equivalent & Substitute Parts

Part Overview

The NAR161H-F is a single-character red 7-segment LED display manufactured by Stanley Electric Co. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The display operates at 2V forward voltage with a 10mA test current and is housed in a 10-DIP package measuring 0.600" (15.24mm) pitch. As an obsolete product, sourcing alternatives from active product lines ensures design continuity and supply chain reliability.

Substiute Parts

NAR161H-F

Stanley Electric CoIn Stock: 1043NAR161H-F Datasheet

Current PartRFQ

INND-TS56RAB

InoluxIn Stock: 2865INND-TS56RAB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NAR161H-F is determined by the following critical parameters:

Primary Compatibility Criteria:

• Display Type: 7-Segment (required match)
• Number of Characters: 1 (required match)
• Common Pin Configuration: Common Anode (required match)
• Color: Red (required match)
• Voltage - Forward (Vf): 2V (required match)
• Package / Case: 10-DIP (0.600", 15.24mm) (required match)

Secondary Compatibility Criteria:

• Digit/Alpha Size: Tolerance range 0.56" to 0.60" (15.24mm to 14.22mm)
• Current - Test: May vary within design specifications
• Power Dissipation: May vary based on current rating
• Compliance: RoHS and REACH status must be maintained

The INND-TS56RAB from Inolux meets all primary compatibility criteria and operates within acceptable secondary parameter ranges, qualifying it as a direct substitute for the NAR161H-F.

Parameter Comparison

Engineering Selection Recommendations

The INND-TS56RAB is qualified as a direct substitute for the NAR161H-F based on the following engineering criteria:

Electrical Compatibility: Both components operate at identical forward voltage (2V) and share common anode configuration. The INND-TS56RAB's higher test current rating (20mA versus 10mA) and increased power dissipation capability (70mW versus 37mW) provide enhanced operational margin and do not create incompatibility with existing circuit designs.

Mechanical Compatibility: Both components utilize identical 10-DIP packaging with 0.600" (15.24mm) pitch. Physical dimensions are nearly identical, with only minor variations in width (0.496" versus 0.492") and height (19.00mm x 12.60mm versus 19.00mm x 12.50mm), which fall within standard PCB layout tolerances.

Compliance Status: The INND-TS56RAB maintains RoHS3 compliance and REACH unaffected status, meeting or exceeding the regulatory requirements of the obsolete NAR161H-F. Both components carry MSL Level 1 (Unlimited) moisture sensitivity classification.

Supply Chain Advantage: The INND-TS56RAB is an active product with 2,851 units in stock, compared to the NAR161H-F's obsolete status with limited remaining inventory (944 units). Selection of the active substitute ensures long-term component availability.

Frequently Asked Questions (FAQ)

Q: Can the INND-TS56RAB be used as a direct pin-for-pin replacement for the NAR161H-F?

A: Yes. Both components use 10-DIP packaging with identical 0.600" (15.24mm) pitch. Pin configuration, electrical characteristics (2V forward voltage, common anode), and physical footprint are compatible. No circuit modifications are required.

Q: What is the significance of the different digit sizes (0.60" versus 0.56")?

A: The digit size difference of 0.04" (approximately 1mm) falls within standard display visibility tolerances. Both sizes are classified as single-character 7-segment displays in the 0.56" to 0.60" range. Visual appearance will be marginally different, but functional performance and readability remain equivalent for most applications.

Q: Why does the INND-TS56RAB have a higher current rating (20mA versus 10mA)?

A: The higher current rating reflects improved LED die technology and manufacturing efficiency in the active Inolux product line. This does not create incompatibility; circuits designed for 10mA operation will function correctly with the 20mA-rated component. The higher rating provides additional operational headroom.

Q: Are there any compliance or regulatory differences between these parts?

A: Both components are RoHS compliant and REACH unaffected. The INND-TS56RAB carries ROHS3 certification, which represents a more recent compliance standard than the NAR161H-F's RoHS compliance. This upgrade does not create incompatibility and ensures alignment with current regulatory requirements.

Q: What is the impact of the different power dissipation ratings (37mW versus 70mW)?

A: The INND-TS56RAB's higher power dissipation rating (70mW) indicates improved thermal design. This does not affect circuit compatibility and provides additional thermal margin for reliability. Existing thermal management designs will remain adequate.

Q: Is the INND-TS56RAB suitable for new designs or only for replacement of obsolete NAR161H-F units?

A: The INND-TS56RAB is suitable for both new designs and obsolescence replacement. As an active product with full compliance certification and established supply chain availability, it is the recommended choice for any application requiring a single-character red 7-segment common anode display in 10-DIP packaging.

Q: What should be verified during design transition from NAR161H-F to INND-TS56RAB?

A: Verify PCB layout accommodates the minimal dimensional variations (width and height differences of less than 1mm). Confirm that existing current-limiting resistor values are appropriate for the substitute component. Validate visual appearance in the application context due to the 0.04" digit size difference. No electrical circuit modifications are necessary.