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

Part Overview

The LTC-561HR is a 2-character red 7-segment LED display module manufactured by Lite-On Inc. in a 12-DIP package configuration. This component is classified as an active product and is RoHS3 compliant. The display operates at 2V forward voltage with a 20mA test current, making it suitable for numeric and alphanumeric display applications requiring compact form factors. Substitute parts are identified when equivalent electrical characteristics, package compatibility, and mechanical dimensions align with application requirements.

Substiute Parts

LTC-561HR

Lite-On Inc.In Stock: 696LTC-561HR Datasheet

Current PartRFQ

BA56-12EWA

KingbrightIn Stock: 1372BA56-12EWA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Package Type: 12-DIP (0.600", 15.24mm) — ensures PCB footprint compatibility
• Display Type: 7-Segment — maintains functional equivalence
• Common Pin Configuration: Common Anode — preserves circuit interface requirements
• Color: Red — maintains visual output specification
• Voltage - Forward (Vf): 2V — ensures compatible power supply requirements
• Current - Test: 20mA — confirms operational current compatibility
• Digit/Alpha Size: 0.56" (14.22mm) — maintains display visibility and form factor

The identified substitute part BA56-12EWA (Kingbright) meets all critical electrical and mechanical parameters. Variations in character count, physical dimensions, millicandela rating, and wavelength do not preclude substitution when the primary electrical interface and package footprint remain compatible.

Parameter Comparison

Engineering Selection Recommendations

Both the LTC-561HR and BA56-12EWA are active products with ROHS3 compliance and MSL Level 1 rating, indicating equivalent environmental and regulatory standing. Selection between these parts is based on application-specific requirements:

The LTC-561HR is the primary specification when a 2-character display is required. The BA56-12EWA serves as a substitute when a 3-character display configuration is acceptable within the application design. Both parts share identical electrical operating parameters (2V forward voltage, 20mA test current, 75mW maximum power dissipation) and package footprint (12-DIP, 0.600" pitch), ensuring direct circuit compatibility.

The BA56-12EWA exhibits higher luminous intensity (5.8mcd versus 2.4mcd) and a slightly shorter peak wavelength (627nm versus 635nm), which may result in perceptibly brighter display output with a marginally different red hue.

Frequently Asked Questions (FAQ)

Q: Can BA56-12EWA directly replace LTC-561HR in existing designs?

A: Direct PCB footprint replacement is possible due to identical 12-DIP package specifications. However, the BA56-12EWA provides 3 characters versus 2 characters in the LTC-561HR. Circuit design must accommodate the additional character if the substitute is selected.

Q: Are the electrical operating parameters identical?

A: Yes. Both parts operate at 2V forward voltage, 20mA test current, and 75mW maximum power dissipation. Power supply and current-limiting resistor calculations remain unchanged.

Q: What is the difference in brightness between these parts?

A: The BA56-12EWA has a millicandela rating of 5.8mcd compared to 2.4mcd for the LTC-561HR, resulting in approximately 2.4 times greater luminous intensity.

Q: Do wavelength differences affect compatibility?

A: The wavelength difference (627nm versus 635nm) represents a minor shift within the red spectrum. Both are classified as red displays. Visual perception of color difference depends on application context and observer sensitivity.

Q: Are both parts RoHS3 compliant?

A: Yes. Both LTC-561HR and BA56-12EWA are ROHS3 compliant with MSL Level 1 rating, meeting equivalent environmental and regulatory requirements.

Q: What is the primary limitation when substituting BA56-12EWA for LTC-561HR?

A: The primary consideration is the character count difference (3 versus 2). Applications designed for 2-character display must be re-evaluated for 3-character operation or the additional character must be masked in the circuit design.