LF-301MA Equivalent & Substitute Parts

Part Overview

The LF-301MA is a green 7-segment LED display module manufactured by Rohm Semiconductor, designed for single-character numeric and alphanumeric display applications. This component features a common anode configuration with a 0.31" digit height and operates at 2.1V forward voltage with 10mA test current. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing production support and design continuity.

Substiute Parts

LF-301MA

Rohm SemiconductorIn Stock: 3251LF-301MA Datasheet

Current PartRFQ

LF-3011MA

Rohm SemiconductorIn Stock: 3908LF-3011MA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LF-301MA is determined by strict alignment of the following critical parameters:

Display characteristics: 7-segment configuration, single character, green color, common anode pin arrangement, and 0.31" digit height ensure functional and electrical compatibility within the display circuit.

Electrical specifications: Forward voltage (2.1V typical), test current (10mA), millicandela rating (10mcd), and peak wavelength (563nm) must remain consistent to maintain circuit performance and brightness characteristics.

Physical compatibility: Overall dimensions (11.00mm x 6.80mm x 5.00mm) and SMD package type determine mechanical fit on the PCB.

Regulatory compliance: RoHS3 compliance and REACH unaffected status are mandatory for substitution in regulated applications.

The LF-3011MA qualifies as a direct substitute based on matching all critical electrical and display parameters while maintaining regulatory compliance, despite differences in packaging format and product status.

Parameter Comparison

Engineering Selection Recommendations

The LF-3011MA is qualified as a direct substitute for the obsolete LF-301MA based on electrical and functional parameter equivalence. Both components maintain identical display specifications, forward voltage, test current, brightness rating, and wavelength characteristics. Both are ROHS3 compliant and REACH unaffected, satisfying regulatory requirements for equivalent component selection.

The primary distinction between these parts is packaging format: the LF-301MA uses 10-SMD No Lead configuration, while the LF-3011MA employs 10-SMD Gull Wing configuration. This packaging difference requires PCB footprint verification during design transition. The LF-3011MA's active product status ensures continued availability and supply chain support, addressing the obsolescence constraint of the original component.

The LF-3011MA's higher moisture sensitivity level (MSL 4 versus MSL 1) requires adherence to 72-hour storage and handling protocols, whereas the LF-301MA had unlimited moisture tolerance. This represents a more stringent handling requirement for the substitute component.

Frequently Asked Questions (FAQ)

Q: Can the LF-3011MA be used as a direct replacement for the LF-301MA in existing designs?

A: Electrical and functional compatibility is confirmed. However, PCB footprint modification is required due to packaging differences (No Lead versus Gull Wing). Verify footprint compatibility with your PCB design before implementation.

Q: What are the key differences between these two parts?

A: The primary differences are packaging format (10-SMD No Lead versus 10-SMD Gull Wing), product status (obsolete versus active), and moisture sensitivity level (MSL 1 versus MSL 4). All electrical and display parameters remain identical.

Q: Does the LF-3011MA require special handling compared to the LF-301MA?

A: Yes. The LF-3011MA has MSL 4 rating, requiring storage and handling within 72 hours of package opening. The LF-301MA had unlimited moisture tolerance (MSL 1). Implement appropriate moisture control procedures during assembly.

Q: Are both parts RoHS compliant?

A: Yes. Both the LF-301MA and LF-3011MA are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for equivalent component selection.

Q: What is the digit height difference between these parts?

A: The specified digit heights are 0.31" for the LF-301MA and 0.32" for the LF-3011MA. Both components share identical physical dimensions (11.00mm x 6.80mm x 5.00mm), indicating the digit height specification difference is nominal and does not affect mechanical compatibility.