LA-601BL 7-Segment Display - Equivalent & Substitute Parts

Part Overview

The LA-601BL is a single-character, 0.58" blue 7-segment LED display manufactured by Rohm Semiconductor in a 10-DIP package configuration. This component is classified as Not For New Designs, indicating it has reached end-of-life status. The display operates at 3.6V forward voltage with a 10mA test current and delivers 56mcd brightness at a 470nm peak wavelength. Due to its discontinued status, identifying functionally compatible substitute components is essential for ongoing production support and legacy system maintenance.

Substiute Parts

LA-601BL

Rohm SemiconductorIn Stock: 829LA-601BL Datasheet

Current PartRFQ

XDCBD14C

SunLEDIn Stock: 862XDCBD14C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LA-601BL is determined by the following critical parameters:

• Display Configuration: Single-character 7-segment format with common cathode connection
• Package Type: 10-DIP dual-in-line package
• Color Specification: Blue LED emission
• Electrical Operating Range: Forward voltage tolerance and test current compatibility
• Physical Form Factor: Overall dimensions and digit size within acceptable tolerance for PCB mounting

The XDCBD14C from SunLED qualifies as a substitute based on matching display type, common cathode configuration, blue color, 10-DIP package, and compatible electrical operating parameters. Variations in digit size (0.56" vs 0.58"), forward voltage (3V vs 3.6V), brightness rating (24mcd vs 56mcd), and package pitch (0.600" vs 0.400") represent acceptable engineering trade-offs for legacy system support, provided circuit design accommodates these differences.

Parameter Comparison

Engineering Selection Recommendations

The XDCBD14C represents the identified substitute for LA-601BL applications. Selection should be based on the following engineering criteria:

Product Status Advantage: The XDCBD14C maintains Active product status, ensuring continued availability and manufacturing support, whereas the LA-601BL is Not For New Designs.

Regulatory Compliance: Both components achieve ROHS3 compliance and REACH Unaffected status, satisfying equivalent environmental and hazardous substance requirements.

Electrical Compatibility: The 0.6V forward voltage differential (3V vs 3.6V) requires circuit evaluation. Existing current-limiting resistor networks must be recalculated to maintain proper segment brightness and prevent over-current conditions at the lower voltage threshold.

Mechanical Considerations: The 10-DIP package pitch difference (0.600" vs 0.400") necessitates PCB layout modification. Existing footprints cannot accommodate the XDCBD14C without redesign.

Optical Performance Trade-off: The reduced brightness rating (24mcd vs 56mcd) and minor digit size reduction (0.56" vs 0.58") require assessment against application visibility requirements and viewing distance specifications.

Frequently Asked Questions (FAQ)

Q: Can the XDCBD14C be directly substituted without PCB modification?

A: No. The 10-DIP package pitch differs (0.600" vs 0.400"), requiring PCB footprint redesign. Pin-to-pin electrical connectivity is identical, but physical mounting positions are incompatible.

Q: How does the forward voltage difference affect circuit operation?

A: The XDCBD14C operates at 3V versus the LA-601BL's 3.6V. Current-limiting resistor values must be recalculated to maintain proper segment illumination. Lower forward voltage typically results in reduced current draw at equivalent resistor values, potentially affecting brightness.

Q: Is the reduced brightness (24mcd vs 56mcd) acceptable for all applications?

A: Brightness suitability depends on application requirements, viewing distance, and ambient lighting conditions. Applications requiring high visibility in bright environments may experience performance degradation. Prototype evaluation is necessary for critical visibility applications.

Q: Are the pin configurations electrically identical?

A: Yes. Both components use common cathode 10-DIP configuration with identical segment-to-pin assignments. Electrical schematic connections remain unchanged; only physical PCB layout requires modification.

Q: What is the impact of higher power dissipation in the XDCBD14C?

A: The XDCBD14C dissipates 120mW maximum versus 42mW for the LA-601BL. Thermal design review is recommended for applications with multiple displays or constrained thermal environments to prevent junction temperature elevation.

Q: Are both components RoHS and REACH compliant?

A: Yes. Both LA-601BL and XDCBD14C achieve ROHS3 compliance and REACH Unaffected status, satisfying equivalent regulatory requirements for hazardous substance restrictions.