NKR141B 7-Segment LED Display Equivalent & Substitute Parts

Part Overview

The NKR141B is a single-character red 7-segment LED display module manufactured by Stanley Electric Co. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support, maintenance, and new production applications. The NKR141B features a 0.43-inch character size with common cathode configuration, designed for 14-DIP package integration. Due to its obsolete status, identifying compatible substitute parts ensures design continuity and supply chain reliability.

Substiute Parts

NKR141B

Stanley Electric CoIn Stock: 878NKR141B Datasheet

Current PartRFQ

5082-7653-DE000

Broadcom LimitedIn Stock: 12405082-7653-DE000 Datasheet

SimilarRFQ

HDSP-E153

Broadcom LimitedIn Stock: 1281HDSP-E153 Datasheet

SimilarRFQ

LDS-C406RI

Lumex Opto/Components Inc.In Stock: 1028LDS-C406RI Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the NKR141B is determined by strict alignment of the following critical parameters:

Primary Compatibility Criteria:

• Display type: 7-Segment (single character)
• Common pin configuration: Common Cathode
• Package type: 14-DIP
• Character size: 0.43" nominal (10.92mm to 11.00mm acceptable range)
• Color: Red
• Test current: 20mA

Secondary Compatibility Considerations:

• Forward voltage (Vf): 1.7V to 2.1V range acceptable for common cathode red LED displays
• Wavelength peak: 635nm to 660nm (red spectrum)
• Millicandela rating: Brightness variations acceptable within application tolerance
• Physical dimensions: Minor variations within 14-DIP standard footprint tolerance

The substitute parts listed below meet all primary compatibility criteria and operate within acceptable electrical parameter ranges for direct functional replacement in 14-DIP socket applications.

Parameter Comparison

Engineering Selection Recommendations

HDSP-E153 (Broadcom Limited) is the primary recommended substitute for the NKR141B. This part maintains active product status, ensuring long-term availability and supply chain stability. The HDSP-E153 is ROHS3 compliant and features electrical parameters within acceptable operating ranges: 1.8V forward voltage (compared to NKR141B 1.7V), 20mA test current matching, and 15mcd brightness rating. The 14-DIP package with 11 leads provides direct socket compatibility. Physical dimensions are within standard 14-DIP tolerance specifications.

5082-7653-DE000 (Broadcom Limited) serves as a secondary substitute option. Although classified as obsolete, this part maintains adequate inventory availability. The 2.1V forward voltage represents the upper acceptable range for common cathode red LED displays. The 14-DIP package with 10 leads provides functional compatibility. Note the reduced millicandela rating (1.12mcd) compared to the NKR141B (8mcd), which may impact brightness-dependent applications.

LDS-C406RI (Lumex Opto/Components Inc.) is suitable for applications where reduced test current (10mA versus 20mA) is advantageous. This part maintains active product status and ROHS3 compliance. The character size of 0.40" (10.16mm) represents a minor reduction from the NKR141B 0.43" (10.92mm), which may affect visual display proportions in space-constrained layouts. The 14-DIP package with 10 leads provides functional compatibility.

Selection between these substitutes depends on application-specific requirements regarding brightness, power consumption, and physical form factor constraints.

Frequently Asked Questions (FAQ)

Q: Can the HDSP-E153 directly replace the NKR141B in existing PCB designs?

A: The HDSP-E153 is functionally compatible with the NKR141B for 14-DIP socket applications. Both parts feature common cathode configuration, 20mA test current, and compatible forward voltage ranges (1.8V versus 1.7V). The 11-lead package variant accommodates standard 14-DIP footprints. Verify PCB layout accommodates the slightly larger physical dimensions (0.750" H x 0.500" W versus 0.748" H x 0.492" W).

Q: What is the significance of the forward voltage difference between NKR141B (1.7V) and 5082-7653-DE000 (2.1V)?

A: Forward voltage variation within the 1.7V to 2.1V range is acceptable for common cathode red LED 7-segment displays. Circuit designs using current-limiting resistors accommodate this variation. The 0.4V difference requires verification that existing series resistor values maintain the 20mA test current specification. Recalculation of series resistance may be necessary for optimal brightness and power efficiency.

Q: Why does the LDS-C406RI have a lower test current (10mA) compared to the NKR141B (20mA)?

A: The LDS-C406RI is specified for 10mA test current, which is a design characteristic of this particular display module. This lower current requirement reduces power dissipation and heat generation. Applications designed for 20mA operation can operate the LDS-C406RI at reduced brightness or implement circuit modifications to maintain equivalent luminous output. Verify application brightness requirements before substitution.

Q: Are there lead count differences between the NKR141B and substitute parts?

A: The NKR141B is specified as 14-DIP without detailed lead count information. The 5082-7653-DE000 and LDS-C406RI feature 10 leads, while the HDSP-E153 features 11 leads. All parts conform to standard 14-DIP package footprints with 0.300" (7.62mm) lead spacing. Lead count variations reflect internal segment connection differences but do not affect PCB footprint compatibility for standard 14-DIP sockets.

Q: What is the impact of wavelength differences (660nm for NKR141B versus 635nm for 5082-7653-DE000)?

A: Both wavelengths fall within the red spectrum visible range. The NKR141B at 660nm produces a standard red appearance, while the 5082-7653-DE000 at 635nm produces a slightly orange-red appearance. This difference is perceptually subtle in most applications. Select based on specific color matching requirements if the display is part of a multi-color indicator system.

Q: Which substitute part offers the best long-term availability?

A: The HDSP-E153 maintains active product status, indicating ongoing manufacturing and distribution support. The 5082-7653-DE000 and NKR141B are both classified as obsolete, indicating limited future availability. For new designs or long-term production requirements, the HDSP-E153 is the recommended choice to ensure sustained component supply.

Q: Can the substitute parts be used interchangeably in the same circuit design?

A: The HDSP-E153 and 5082-7653-DE000 are directly interchangeable from an electrical and mechanical standpoint, both featuring 20mA test current and common cathode configuration. The LDS-C406RI requires circuit verification due to its 10mA test current specification. Brightness variations between parts (1.12mcd to 15mcd range) may require visual assessment in the target application. Conduct functional testing to confirm acceptable performance before full production implementation.