LA-401MD 7-Segment Display - Equivalent & Substitute Parts

Part Overview

The LA-401MD is a single-character green 7-segment LED display module manufactured by Rohm Semiconductor. It features a common anode configuration with a 0.40" digit height, designed for numeric and alphanumeric display applications. The device is currently in active production status and is RoHS3 compliant. Substitute parts may be required due to packaging format differences, inventory availability, or specific application requirements such as surface-mount versus through-hole assembly.

Substiute Parts

LA-401MD

Rohm SemiconductorIn Stock: 1090LA-401MD Datasheet

Current PartRFQ

ACSA04-41CGKWA-F01

KingbrightIn Stock: 10344ACSA04-41CGKWA-F01 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The ACSA04-41CGKWA-F01 manufactured by Kingbright qualifies as a substitute for the LA-401MD based on the following matching parameters:

• Display Type: 7-Segment (identical)
• Number of Characters: 1 (identical)
• Digit Height: 0.40" (10.16mm) (identical)
• Color: Green (identical)
• Common Pin Configuration: Common Anode (identical)
• Forward Voltage (Typ): 2.1V (identical)
• RoHS Status: RoHS3 Compliant (identical)
• Product Status: Active (identical)

The primary difference is the package format: the LA-401MD uses 10-DIP through-hole packaging, while the ACSA04-41CGKWA-F01 uses 10-SMD surface-mount packaging. This substitution is applicable only when the target application supports surface-mount assembly.

Parameter Comparison

Engineering Selection Recommendations

Both the LA-401MD and ACSA04-41CGKWA-F01 are active products with RoHS3 compliance and identical core electrical specifications. Selection between these parts depends on assembly methodology:

• Select LA-401MD for through-hole PCB assembly applications requiring 10-DIP package format.
• Select ACSA04-41CGKWA-F01 for surface-mount PCB assembly applications requiring 10-SMD package format.

Both parts meet the same regulatory and compliance requirements. The ACSA04-41CGKWA-F01 operates at higher test current (20mA versus 10mA) and exhibits slightly different optical characteristics (wavelength and luminous intensity), which may affect brightness perception in specific applications.

Frequently Asked Questions (FAQ)

Q: Can the ACSA04-41CGKWA-F01 be used as a direct replacement for the LA-401MD?

A: Direct replacement is possible only if the target PCB supports surface-mount assembly. The electrical specifications and display characteristics are compatible, but the package formats are fundamentally different (through-hole DIP versus surface-mount SMD).

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

A: The primary difference is packaging format. Secondary differences include test current specification (10mA versus 20mA), millicandela rating (16mcd versus 11mcd), and peak wavelength (563nm versus 574nm). Both parts share identical forward voltage, digit height, color, and common anode configuration.

Q: Are both parts currently available?

A: Yes, both parts are in active production status. Inventory availability may vary by distributor and time of order.

Q: Do both parts meet the same compliance standards?

A: Yes, both parts are RoHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements.

Q: How do the optical characteristics differ?

A: The LA-401MD has a peak wavelength of 563nm with 16mcd brightness, while the ACSA04-41CGKWA-F01 has a peak wavelength of 574nm with 11mcd brightness. These differences may result in slightly different color perception and brightness levels in the final application.