NKG141PB 7-Segment LED Display Equivalent & Substitute Parts

Part Overview

The NKG141PB is a single-character, 7-segment LED display module manufactured by Stanley Electric Co. It features a 0.43-inch green display with common cathode configuration, designed for numeric and alphanumeric applications. The part operates at 2.2V forward voltage with a 20mA test current and delivers 2mcd brightness output.

This part is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or repair requirements for legacy systems utilizing this display module.

Substiute Parts

NKG141PB

Stanley Electric CoIn Stock: 1193NKG141PB Datasheet

Current PartRFQ

HDSP-4603

Broadcom LimitedIn Stock: 2080HDSP-4603 Datasheet

SimilarRFQ

LDS-C412RI

Lumex Opto/Components Inc.In Stock: 767LDS-C412RI Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the NKG141PB are identified based on strict electrical and mechanical compatibility criteria. The following parameters must align for a part to function as a direct substitute:

Critical Matching Parameters:

• Display Type: 7-Segment LED
• Number of Characters: 1
• Digit/Alpha Size: 0.43" nominal
• Color: Green
• Common Pin Configuration: Common Cathode
• Package / Case: 14-DIP

Allowable Parameter Variations: Substitute parts may differ within these ranges while maintaining functional compatibility:

• Voltage - Forward (Vf): 2.1V to 2.2V
• Current - Test: 10mA to 20mA
• Millicandela Rating: 2mcd to 4mcd
• Wavelength - Peak: 565nm to 566nm
• Physical Dimensions: Tolerances within ±0.010" per axis
• Power Dissipation (Max): Up to 105mW

The identified substitutes meet all critical parameters and fall within allowable electrical and mechanical tolerances.

Parameter Comparison

Engineering Selection Recommendations

HDSP-4603 (Broadcom Limited)

The HDSP-4603 is an active product with ROHS3 compliance and MSL 1 rating, providing superior long-term availability and environmental compliance. This part operates at 2.1V forward voltage with reduced test current (10mA versus 20mA), resulting in lower power dissipation. The higher millicandela rating (4mcd) provides increased brightness output. Physical dimensions are within tolerance of the original part. The HDSP-4603 is suitable for applications where reduced power consumption and enhanced brightness are acceptable or beneficial.

LDS-C412RI (Lumex Opto/Components Inc.)

The LDS-C412RI is an active product with ROHS3 compliance and MSL 1 rating. This part maintains the original 2.2V forward voltage specification and 565nm wavelength, providing the closest electrical match to the NKG141PB. Test current is reduced to 10mA with corresponding power dissipation increase to 105mW. The millicandela rating (3.5mcd) falls between the original and the Broadcom alternative. Physical dimensions are nearly identical to the original part. The LDS-C412RI is suitable for applications requiring minimal electrical parameter deviation from the original specification.

Both substitute parts are active products with current manufacturing support, environmental compliance certifications, and documented availability. Selection between them depends on specific application requirements regarding power consumption, brightness output, and electrical parameter tolerance.

Frequently Asked Questions (FAQ)

Q: Can the HDSP-4603 or LDS-C412RI be used as direct replacements for the NKG141PB without circuit modification?

A: Both parts share identical display type, character count, digit size, color, common cathode configuration, and 14-DIP package. Electrical parameters fall within acceptable substitution ranges. However, the reduced test current (10mA versus 20mA) in both substitutes requires verification that existing current-limiting resistor values in the circuit remain appropriate for the new forward voltage specifications. The HDSP-4603 operates at 2.1V; the LDS-C412RI operates at 2.2V. Circuit validation is necessary before deployment.

Q: What are the key differences between the HDSP-4603 and LDS-C412RI?

A: The HDSP-4603 features 2.1V forward voltage and 4mcd brightness, offering reduced power consumption and enhanced brightness. The LDS-C412RI maintains 2.2V forward voltage and 3.5mcd brightness, providing closer electrical alignment to the original NKG141PB. Both operate at 10mA test current. Physical dimensions are nearly identical, with the LDS-C412RI slightly deeper (0.307" versus 0.250" depth). Selection depends on whether reduced power consumption or electrical parameter matching is prioritized.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both the HDSP-4603 and LDS-C412RI are ROHS3 compliant. The original NKG141PB does not specify RoHS status. Both substitutes carry MSL 1 (Unlimited) moisture sensitivity ratings, indicating no special moisture handling requirements during storage or assembly.

Q: What is the physical compatibility of these parts in existing PCB designs?

A: All three parts use 14-DIP packaging with 0.300" (7.62mm) lead spacing. Physical dimensions are within ±0.010" tolerance across height, width, and depth axes. The LDS-C412RI is slightly deeper (0.307" versus 0.248" original), which may require verification of clearance in confined mounting spaces. Standard 14-DIP sockets accommodate all three parts without modification.

Q: How do the brightness levels compare?

A: The NKG141PB delivers 2mcd. The HDSP-4603 delivers 4mcd (100% increase). The LDS-C412RI delivers 3.5mcd (75% increase). Applications sensitive to brightness uniformity should account for these differences. The increased brightness of the substitutes may require adjustment of current-limiting resistor values to maintain consistent display intensity if multiple display modules are used in the same system.

Q: What is the wavelength difference between these parts?

A: The NKG141PB and LDS-C412RI both emit at 565nm peak wavelength. The HDSP-4603 emits at 566nm peak wavelength. This 1nm difference is imperceptible to human vision and does not affect color matching in practical applications.

Q: Are there any lead count differences?

A: The NKG141PB uses 14-DIP with standard lead configuration. Both substitutes specify 14-DIP (0.300", 7.62mm), 11 Leads. This indicates the substitutes use 11 of the 14 available DIP positions. Verify pinout compatibility with the original design before substitution. Pin assignment must match exactly for proper circuit operation.