LA-601BB 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The LA-601BB is a single-character, 7-segment LED display module manufactured by Rohm Semiconductor. It features a blue light-emitting diode configuration with common anode architecture, designed for numeric and alphanumeric display applications. The device operates at 3.6V forward voltage with a 10mA test current and delivers 56mcd brightness output.

The LA-601BB carries a "Not For New Designs" product status, indicating that Rohm Semiconductor has discontinued active development and support for this component. This status necessitates identification of functionally equivalent alternatives for ongoing production requirements, maintenance applications, and new design implementations where similar performance characteristics are required.

Substiute Parts

LA-601BB

Rohm SemiconductorIn Stock: 975LA-601BB Datasheet

Current PartRFQ

XDCBD14A

SunLEDIn Stock: 4456XDCBD14A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LA-601BB is determined by strict alignment with the following core parameters:

Display Architecture: Single-character, 7-segment configuration with common anode topology Electrical Characteristics: Forward voltage range compatible with 3.6V nominal operation; test current at 10mA Physical Form Factor: 10-DIP package with compatible pin spacing and mechanical dimensions Optical Properties: Blue wavelength output (470nm nominal) with brightness output in the 24-56mcd range Compliance Requirements: ROHS3 compliance, MSL Level 1 rating, and REACH unaffected status

The XDCBD14A from SunLED meets these substitution criteria. Both devices share identical display type, character count, common anode configuration, color specification, and package classification. Electrical parameters remain within acceptable operational ranges for direct circuit substitution.

Parameter Comparison

Engineering Selection Recommendations

The XDCBD14A qualifies as a direct substitute for the LA-601BB based on functional equivalence across core display parameters. Both devices maintain ROHS3 compliance and MSL Level 1 ratings, ensuring compatibility with standard manufacturing and storage protocols.

The XDCBD14A carries Active product status, providing ongoing manufacturer support and supply chain availability. This status advantage makes it the preferred selection for applications requiring long-term component sourcing and technical support.

Circuit design considerations must account for the 0.6V reduction in forward voltage (3.0V versus 3.6V) and the 32mcd reduction in brightness output (24mcd versus 56mcd). These electrical differences require verification of current-limiting resistor values and brightness adequacy for the intended application. The 10-DIP package pitch difference (0.600" versus 0.400") necessitates PCB layout evaluation for mechanical fit and pin alignment compatibility.

Frequently Asked Questions (FAQ)

Q: Can the XDCBD14A directly replace the LA-601BB without circuit modifications?

A: The XDCBD14A shares identical display architecture, common anode configuration, and 10-DIP package classification. However, the 0.6V forward voltage difference and 32mcd brightness reduction require evaluation of current-limiting resistor values and brightness requirements for your specific application. PCB layout verification is necessary due to the 10-DIP package pitch difference.

Q: What is the significance of the "Not For New Designs" status on the LA-601BB?

A: This designation indicates that Rohm Semiconductor has concluded active development and support for this component. Existing inventory may become unavailable, and technical support may be limited. The XDCBD14A's Active status provides assurance of continued availability and manufacturer support.

Q: Are both devices RoHS compliant?

A: Yes. Both the LA-601BB and XDCBD14A are ROHS3 compliant and carry MSL Level 1 ratings, meeting standard environmental and manufacturing requirements.

Q: How do the physical dimensions compare?

A: The digit size differs slightly (0.58" versus 0.56"), and the 10-DIP package pitch differs (0.400" versus 0.600"). These dimensional variations require PCB layout verification to ensure mechanical compatibility and proper pin alignment in your circuit design.

Q: What brightness difference should I expect?

A: The XDCBD14A delivers 24mcd compared to the LA-601BB's 56mcd output. This 57% reduction in brightness may impact visibility in high-ambient-light environments. Evaluate your application's brightness requirements before substitution.

Q: Are the wavelength specifications compatible?

A: Yes. Both devices operate in the blue spectrum with peak wavelengths of 470nm (LA-601BB) and 468nm (XDCBD14A), representing negligible optical difference for display applications.