NAR141SH-F Equivalent & Substitute Parts

Part Overview

The NAR141SH-F is a 7-segment LED display module manufactured by Stanley Electric Co, featuring a single red character with 0.40" digit height in a 10-DIP package configuration. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The display operates as a common anode device with 1.9V forward voltage and 5mA test current, suitable for numeric and alphanumeric display applications requiring compact form factors.

Substiute Parts

NAR141SH-F

Stanley Electric CoIn Stock: 723NAR141SH-F Datasheet

Current PartRFQ

HDSP-F151

Broadcom LimitedIn Stock: 2001HDSP-F151 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NAR141SH-F is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Display Type: 7-Segment configuration
• Number of Characters: Single character (1)
• Digit/Alpha Size: 0.40" (10.16mm)
• Common Pin Configuration: Common Anode
• Color: Red
• Package / Case: 10-DIP (0.300", 7.62mm)

Allowable Parameter Variations: Substitute parts may differ in forward voltage (Vf), test current, power dissipation, and physical dimensions within tolerance ranges, provided the core functional and mechanical parameters remain identical. These variations reflect manufacturing improvements and performance enhancements while maintaining electrical and mechanical compatibility.

The HDSP-F151 manufactured by Broadcom Limited meets all mandatory matching criteria and qualifies as a direct substitute for the obsolete NAR141SH-F.

Parameter Comparison

Engineering Selection Recommendations

The HDSP-F151 is the qualified substitute for the obsolete NAR141SH-F based on the following engineering criteria:

Functional Compatibility: Both components share identical display architecture (7-segment, single character, 0.40" digit height, common anode configuration, red color) and package form factor (10-DIP 0.300" pitch). Pin-to-pin compatibility is maintained, enabling direct board-level substitution without circuit redesign.

Compliance Status: The HDSP-F151 holds active product status with ROHS3 compliance, ensuring long-term availability and regulatory alignment for new production. The NAR141SH-F, classified as obsolete, presents supply chain risk and regulatory obsolescence concerns.

Electrical Performance: The HDSP-F151 operates at 1.8V forward voltage (0.1V lower than NAR141SH-F) with higher test current (20mA versus 5mA) and increased power dissipation (96mW versus 37mW). These differences reflect enhanced brightness and performance characteristics. Circuit designs must accommodate the higher current and power requirements through appropriate current-limiting resistor and power supply adjustments.

Regulatory Alignment: Both components maintain REACH Unaffected status and EAR99 ECCN classification. The HDSP-F151's ROHS3 compliance exceeds the NAR141SH-F's RoHS Compliant status, supporting compliance with current and future environmental regulations.

Frequently Asked Questions (FAQ)

Q: Can the HDSP-F151 replace the NAR141SH-F in existing designs without circuit modification?

A: Pin-to-pin substitution is possible due to identical 10-DIP package configuration and common anode pinout. However, circuit modifications are required to accommodate the HDSP-F151's higher test current (20mA versus 5mA) and lower forward voltage (1.8V versus 1.9V). Current-limiting resistor values must be recalculated to prevent over-current conditions and ensure proper brightness levels.

Q: What are the physical dimension differences between these components?

A: The HDSP-F151 is slightly more compact (0.508" H x 0.385" W x 0.250" D) compared to the NAR141SH-F (0.512" H x 0.378" W x 0.276" D). These minor variations (approximately 0.004" in height and width, 0.026" in depth) fall within typical PCB layout tolerances for 10-DIP packages and do not affect mechanical compatibility or mounting procedures.

Q: Why does the HDSP-F151 have higher power dissipation than the NAR141SH-F?

A: The HDSP-F151 operates at higher test current (20mA versus 5mA), resulting in increased power dissipation (96mW versus 37mW). This reflects improved brightness performance and enhanced optical output characteristics. Power supply and thermal management designs must account for this increased dissipation.

Q: Are both components compatible with the same control circuitry?

A: Both components use common anode configuration and 10-DIP pinout, ensuring compatibility with identical control logic and driver circuits. However, current-limiting resistor networks must be redesigned for the HDSP-F151's higher operating current to maintain proper segment brightness and prevent component damage.

Q: What is the significance of the ROHS3 compliance on the HDSP-F151?

A: ROHS3 compliance indicates adherence to the latest Restriction of Hazardous Substances directive, ensuring the component meets current environmental and regulatory standards. This status supports long-term production viability and compliance with evolving regulatory requirements in target markets.

Q: Is the HDSP-F151 available in the same packaging format?

A: Yes, the HDSP-F151 is supplied in 10-DIP (0.300", 7.62mm) package configuration, identical to the NAR141SH-F. This ensures mechanical compatibility with existing PCB designs and assembly processes without requiring layout modifications.