LTC-561Y 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The LTC-561Y is a 3-character, 0.56-inch yellow 7-segment LED display module manufactured by Lite-On Inc. in a 12-DIP package configuration. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and production continuity. The display operates at 2.1V forward voltage with 20mA test current and delivers 2.4mcd brightness output at a peak wavelength of 585nm. Common anode configuration allows direct integration into standard LED driver circuits.

Substiute Parts

LTC-561Y

Lite-On Inc.In Stock: 1196LTC-561Y Datasheet

Current PartRFQ

BA56-12YWA

KingbrightIn Stock: 697BA56-12YWA Datasheet

MFR RecommendedRFQ

XDMYK14A3

SunLEDIn Stock: 1220XDMYK14A3 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTC-561Y is determined by the following critical parameters:

Primary Compatibility Criteria:

• Number of characters: 3 (must match)
• Digit/Alpha size: 0.56" / 14.22mm (must match)
• Display type: 7-Segment (must match)
• Common pin configuration: Common Anode (must match)
• Color: Yellow (must match)
• Package type: DIP configuration (must be compatible with 0.600" pitch)

Allowable Variation Parameters:

• Forward voltage (Vf): ±0.15V tolerance acceptable for standard LED driver circuits
• Test current: ±10mA variation acceptable with appropriate current-limiting resistor adjustment
• Millicandela rating: Higher brightness acceptable; lower brightness requires application review
• Wavelength peak: ±5nm variation acceptable within yellow spectrum (585nm–590nm)
• Power dissipation: Higher ratings acceptable; lower ratings require thermal review
• Physical dimensions: Minor variations acceptable if PCB footprint accommodates
• Package pin count: 10-DIP or 12-DIP both acceptable if pinout compatibility confirmed

Parameter Comparison

Engineering Selection Recommendations

BA56-12YWA (Kingbright) is the primary substitute for direct replacement applications. This part maintains identical package configuration (12-DIP), matching forward voltage (2.1V), and test current (20mA). The BA56-12YWA is in active production status with ROHS3 compliance and REACH unaffected certification, ensuring long-term supply availability and regulatory compliance for new designs. Higher millicandela rating (6.5mcd vs. 2.4mcd) provides improved brightness margin without requiring circuit modifications.

XDMYK14A3 (SunLED) is an alternative substitute suitable for applications where lower power consumption is prioritized. This part operates at reduced forward voltage (1.95V) and test current (10mA), resulting in lower power dissipation. The 10-DIP package requires PCB footprint verification and potential pinout mapping confirmation. Significantly higher millicandela rating (39mcd) indicates substantially improved brightness performance. Active product status and ROHS3/REACH compliance support production continuity.

Both substitute parts maintain the critical functional parameters: 3-character configuration, 0.56-inch digit size, 7-segment display type, common anode architecture, and yellow color specification. Selection between BA56-12YWA and XDMYK14A3 depends on package compatibility requirements and power budget constraints specific to the application circuit.

Frequently Asked Questions (FAQ)

Q: Can the BA56-12YWA directly replace the LTC-561Y without circuit modifications?

A: Yes. The BA56-12YWA maintains identical electrical specifications (2.1V forward voltage, 20mA test current) and package configuration (12-DIP). Direct pin-for-pin substitution is possible without resistor or driver circuit changes. The higher brightness output (6.5mcd vs. 2.4mcd) is compatible with standard LED driver designs.

Q: What are the key differences between BA56-12YWA and XDMYK14A3?

A: The primary differences are package type (12-DIP vs. 10-DIP), forward voltage (2.1V vs. 1.95V), test current (20mA vs. 10mA), and brightness output (6.5mcd vs. 39mcd). BA56-12YWA provides direct package compatibility; XDMYK14A3 requires lower operating current and offers significantly higher brightness. Pinout verification is necessary for XDMYK14A3 due to different DIP pin count.

Q: Is the XDMYK14A3 suitable for applications requiring the original 20mA operating current?

A: The XDMYK14A3 is rated for 10mA test current. While it can operate at higher currents, this exceeds the specified test rating and may reduce component lifespan. Applications requiring 20mA operation should use BA56-12YWA for rated performance.

Q: Do the substitute parts meet current regulatory requirements?

A: Yes. Both BA56-12YWA and XDMYK14A3 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components in most jurisdictions.

Q: What is the wavelength difference between the main part and substitutes?

A: The LTC-561Y operates at 585nm peak wavelength, while both substitutes operate at 590nm. This 5nm difference remains within the yellow spectrum and is not visually distinguishable in standard applications. Both wavelengths are acceptable for yellow 7-segment display applications.

Q: Can I use XDMYK14A3 if my PCB is designed for 12-DIP packages?

A: The XDMYK14A3 uses a 10-DIP package, which is physically incompatible with 12-DIP PCB footprints. PCB redesign or adapter solutions would be required. For existing 12-DIP designs, BA56-12YWA is the appropriate choice.

Q: Are there inventory considerations for these substitute parts?

A: Current inventory levels are: LTC-561Y (1138 pcs), BA56-12YWA (670 pcs), and XDMYK14A3 (1117 pcs). Availability may vary by distributor and time. Verify current stock status with component suppliers before finalizing procurement decisions.