LB-302MP 7-Segment Display - Equivalent & Substitute Parts

Part Overview

The LB-302MP is a dual-character 7-segment LED display module manufactured by Rohm Semiconductor. It features a 0.30-inch green display with common cathode configuration, designed for numeric and alphanumeric applications. The part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The LB-302MP operates at 2.1V forward voltage with 10mA test current and delivers 9mcd brightness in the 563nm wavelength range.

Substiute Parts

LB-302MP

Rohm SemiconductorIn Stock: 868LB-302MP Datasheet

Current PartRFQ

DC03-11CGKWA

KingbrightIn Stock: 945DC03-11CGKWA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LB-302MP is determined by the following critical parameters:

• Display Configuration: 2-character, 7-segment, common cathode topology
• Physical Dimensions: 0.30-inch character size with 10-DIP package footprint (0.400", 10.16mm)
• Electrical Characteristics: 2.1V forward voltage and 10-DIP pinout compatibility
• Color Specification: Green wavelength (563nm nominal)
• Compliance Requirements: ROHS3 compliance and MSL Level 1 rating

The DC03-11CGKWA from Kingbright meets all substitution criteria. While it exhibits higher current consumption (20mA vs. 10mA) and increased brightness (16mcd vs. 9mcd), these parameters remain within acceptable operational ranges for common cathode 7-segment display applications and do not compromise electrical compatibility or mechanical fit.

Parameter Comparison

Engineering Selection Recommendations

The DC03-11CGKWA serves as a direct functional substitute for the LB-302MP. Both components maintain identical electrical interface specifications (2.1V forward voltage, common cathode configuration, 10-DIP package) and comply with ROHS3 and REACH requirements. The DC03-11CGKWA is currently in active production status, ensuring long-term availability and supply chain continuity.

The increased current consumption (20mA vs. 10mA) and brightness (16mcd vs. 9mcd) of the DC03-11CGKWA represent performance enhancements rather than incompatibilities. Circuit designs accommodating the original 10mA specification will function with the substitute; however, current-limiting resistor values may require adjustment to optimize brightness levels for specific applications. The wavelength shift (574nm vs. 563nm) remains within the green spectrum and produces no perceptible color difference in standard display applications.

Frequently Asked Questions (FAQ)

Q: Can the DC03-11CGKWA replace the LB-302MP in existing circuit designs?

A: Yes. Both components share identical pinout, voltage specifications, and common cathode configuration. Direct substitution is mechanically and electrically compatible.

Q: What is the impact of the higher current rating (20mA vs. 10mA)?

A: The DC03-11CGKWA requires higher current for rated brightness. Existing current-limiting resistor values will still function but may produce different brightness levels. Resistor adjustment is optional based on application requirements.

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

A: No. Both components are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 ratings. Compliance profiles are identical.

Q: Does the wavelength difference (563nm vs. 574nm) affect display appearance?

A: Both wavelengths fall within the green spectrum. The 11nm difference produces no perceptible color variation in standard display applications.

Q: Is the DC03-11CGKWA available for immediate procurement?

A: Yes. The DC03-11CGKWA is in active production status with current inventory availability, unlike the obsolete LB-302MP.