LB-302MF Equivalent & Substitute Parts

Part Overview

The LB-302MF is a dual-character 7-segment LED display module manufactured by Rohm Semiconductor. It features a common anode configuration with green LED elements, designed for numeric and alphanumeric display applications. The device operates at 2.1V forward voltage with a 10mA test current and is housed in a 10-DIP package measuring 0.400" (10.16mm) pitch.

The LB-302MF is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure component availability, and support ongoing production or maintenance requirements for systems utilizing this display module.

Substiute Parts

LB-302MF

Rohm SemiconductorIn Stock: 979LB-302MF Datasheet

Current PartRFQ

DA03-11CGKWA

KingbrightIn Stock: 1021DA03-11CGKWA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LB-302MF are identified based on strict electrical and mechanical compatibility criteria. The following parameters define acceptable substitution:

• Display Configuration: 2-character, 7-segment, common anode topology
• Color and Wavelength: Green LED elements
• Forward Voltage: 2.1V nominal operation
• Package Type: 10-DIP (0.400", 10.16mm) pitch
• Digit Size: 0.30" (7.62mm) character height
• Compliance: ROHS3 compliant, REACH unaffected

The DA03-11CGKWA from Kingbright meets all core substitution criteria. Variations in test current (20mA vs. 10mA), brightness rating (16mcd vs. 9mcd), and wavelength peak (574nm vs. 563nm) remain within acceptable tolerances for common anode 7-segment display applications and do not preclude functional equivalence in standard circuit implementations.

Parameter Comparison

Engineering Selection Recommendations

The DA03-11CGKWA is an active product with current manufacturing support and documented availability. As the LB-302MF is obsolete, the DA03-11CGKWA provides functional continuity for new designs and replacement applications.

Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for industrial and commercial applications. The DA03-11CGKWA's higher test current (20mA) and brightness rating (16mcd) represent enhanced performance characteristics within the same package footprint and electrical interface.

Physical dimensions show minor height and width transposition (0.610" H x 0.591" W versus 0.591" H x 0.610" W), which does not affect PCB mounting compatibility given the symmetric 10-DIP package design and standard lead spacing.

Frequently Asked Questions (FAQ)

Q: Can the DA03-11CGKWA directly replace the LB-302MF in existing circuit designs?

A: Yes. Both parts share identical common anode configuration, 2.1V forward voltage, 10-DIP package type, and 0.30" digit size. The 10-DIP (0.400", 10.16mm) pitch ensures mechanical and electrical compatibility without PCB redesign.

Q: What is the significance of the different test currents (10mA vs. 20mA)?

A: Test current specifies the measurement condition for brightness and electrical characteristics. The DA03-11CGKWA's 20mA test current reflects higher brightness capability (16mcd vs. 9mcd). Circuit designs must account for the higher maximum power dissipation (75mW vs. 60mW) when selecting current-limiting resistors and power supply capacity.

Q: Are the wavelength differences (563nm vs. 574nm) functionally significant?

A: Both wavelengths fall within the green spectrum and are visually indistinguishable in standard display applications. The 11nm difference represents normal manufacturing variation across green LED product lines and does not affect functional compatibility.

Q: Do the physical dimension variations affect mounting?

A: No. The transposed height and width measurements (0.610" H x 0.591" W versus 0.591" H x 0.610" W) reflect the same physical package rotated in documentation. The 10-DIP lead pitch and package footprint remain identical, ensuring direct PCB compatibility.

Q: What compliance certifications apply to both parts?

A: Both the LB-302MF and DA03-11CGKWA are ROHS3 compliant and REACH unaffected. Moisture sensitivity level is 1 (Unlimited) for both, indicating no special storage or handling requirements.