LA-601XL Yellow 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The LA-601XL is a single-character yellow 7-segment LED display manufactured by Rohm Semiconductor in a 10-DIP package. This component is classified as "Not For New Designs," indicating it has reached end-of-life status. The display operates at a forward voltage of 2.05V with a 10mA test current and features a 0.58" digit height with common cathode configuration. Due to its discontinued status, identifying functionally equivalent substitute parts is essential for ongoing production support and legacy system maintenance.

Substiute Parts

LA-601XL

Rohm SemiconductorIn Stock: 1010LA-601XL Datasheet

Current PartRFQ

XDMYK14C

SunLEDIn Stock: 1052XDMYK14C Datasheet

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Key Parameters

Substitute Part Grouping Explanation

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

• Display Type & Configuration: Must be a 7-segment, single-character display with common cathode configuration
• Color: Yellow wavelength (589-590nm range)
• Electrical Characteristics: Forward voltage within acceptable operating range (1.95V–2.05V); test current at 10mA
• Package Compatibility: 10-DIP package format with compatible pin spacing
• Physical Dimensions: Digit height and overall form factor must accommodate existing PCB layouts
• Compliance: RoHS3 compliance and REACH unaffected status required for regulatory alignment

The XDMYK14C from SunLED meets these substitution criteria. While minor variations exist in millicandela rating, wavelength peak, and power dissipation, the part maintains functional equivalence within the specified electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

The XDMYK14C is a qualified substitute for the LA-601XL based on the following factors:

• Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring continued regulatory alignment in production environments.
• Active Manufacturing Status: The XDMYK14C is classified as "Active," providing supply chain continuity and long-term availability compared to the LA-601XL's end-of-life status.
• Electrical Compatibility: Forward voltage differential of 0.10V and identical test current specifications ensure compatibility with existing driver circuits without redesign.
• Physical Form Factor: 10-DIP package configuration and overall dimensions support direct PCB layout compatibility with minimal mechanical adjustment.
• Performance Trade-offs: The XDMYK14C exhibits reduced millicandela rating (48mcd vs. 90mcd) and increased power dissipation (75mW vs. 65mW). Applications requiring high brightness or operating in thermally constrained environments must evaluate these parameters against specific design requirements.

Frequently Asked Questions (FAQ)

Q: Can the XDMYK14C be used as a direct replacement for the LA-601XL without circuit modification?

A: The XDMYK14C is electrically compatible with the LA-601XL in most applications. The 0.10V forward voltage difference is within typical circuit tolerance. However, the reduced brightness (48mcd vs. 90mcd) may require evaluation if the original design depends on specific luminous intensity. Verify that existing current-limiting resistor values remain appropriate for the substitute part.

Q: What is the significance of the 10-DIP package pitch difference (0.400" vs. 0.600")?

A: The package pitch difference indicates the spacing between DIP pins. The LA-601XL uses 0.400" pitch (10.16mm), while the XDMYK14C uses 0.600" pitch (15.24mm). This difference requires physical verification against the PCB footprint. If the original PCB is designed for 0.400" pitch, the XDMYK14C may not fit without PCB modification or adapter solutions.

Q: How does the millicandela rating difference affect display visibility?

A: The LA-601XL provides 90mcd brightness, while the XDMYK14C provides 48mcd. This represents approximately a 47% reduction in luminous intensity. In applications with ambient lighting or where high visibility is critical, this reduction may impact readability. Conduct visual testing under actual operating conditions to confirm acceptability.

Q: Are there any thermal considerations when substituting to the XDMYK14C?

A: The XDMYK14C has a maximum power dissipation of 75mW compared to the LA-601XL's 65mW. This 10mW increase is modest and unlikely to cause thermal issues in typical applications. However, in designs operating at maximum current or in thermally constrained environments, verify that thermal management remains adequate.

Q: What compliance certifications apply to both parts?

A: Both the LA-601XL and XDMYK14C are ROHS3 compliant and REACH unaffected. These certifications ensure compliance with European environmental and chemical regulations, making both parts suitable for regulated markets without additional compliance work.