LTS-4810AY 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The LTS-4810AY is a 0.4-inch single-character yellow 7-segment LED display manufactured by Lite-On Inc. in a 14-DIP package configuration. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The display operates as a common anode device with a forward voltage of 2.1V and test current of 20mA, suitable for numeric and alphanumeric display applications in industrial and consumer electronics.

Substiute Parts

LTS-4810AY

Lite-On Inc.In Stock: 891LTS-4810AY Datasheet

Current PartRFQ

HDSP-311Y

Broadcom LimitedIn Stock: 937HDSP-311Y Datasheet

MFR RecommendedRFQ

LDS-A402RI

Lumex Opto/Components Inc.In Stock: 1162LDS-A402RI Datasheet

MFR RecommendedRFQ

LDS-A403RI

Lumex Opto/Components Inc.In Stock: 1073LDS-A403RI Datasheet

MFR RecommendedRFQ

SA04-11YWA

KingbrightIn Stock: 989SA04-11YWA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LTS-4810AY are selected based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Display type: 7-Segment LED
• Character configuration: Single character
• Digit size: 0.40" (10.16mm)
• Common pin type: Common Anode
• Color: Yellow
• Package type: 14-DIP
• Forward voltage range: 2.1V ±0.15V
• Test current: 20mA (primary) or 10mA (reduced current alternative)

Substitution Logic: Parts are grouped into two categories based on test current specifications. Primary substitutes maintain the 20mA test current rating for direct replacement in existing designs. Secondary substitutes operate at 10mA test current and are suitable for applications where reduced power consumption is acceptable. All substitute parts maintain common anode configuration, 0.40-inch digit size, and 14-DIP package format.

Parameter Comparison

Engineering Selection Recommendations

HDSP-311Y (Broadcom Limited) - Primary substitute for direct replacement applications. Maintains 20mA test current and 2.15V forward voltage within acceptable tolerance of the original LTS-4810AY. ROHS3 compliant and active product status ensure long-term availability and regulatory compliance. Slightly lower millicandela rating (1.5mcd vs. 2.2mcd) and longer wavelength peak (595nm vs. 585nm) result in marginally warmer yellow appearance.

SA04-11YWA (Kingbright) - Direct replacement option with identical forward voltage (2.1V) and test current (20mA). ROHS3 compliant with active product status. Higher millicandela rating (6.3mcd) provides increased brightness. Slightly narrower DIP pitch (0.295" vs. 0.300") requires verification of PCB footprint compatibility.

LDS-A403RI (Lumex Opto/Components Inc.) - Suitable for applications where reduced power consumption is acceptable. Operates at 10mA test current with identical forward voltage (2.1V) and matching wavelength peak (585nm). ROHS3 compliant and active product status. Higher power dissipation rating (105mW) and increased millicandela rating (3.5mcd) support brightness-critical applications despite lower test current.

All substitute parts maintain common anode configuration, 0.40-inch digit size, and 14-DIP package compatibility. Selection should be based on specific application requirements for brightness, power consumption, and PCB layout constraints.

Frequently Asked Questions (FAQ)

Q: Can HDSP-311Y replace LTS-4810AY in existing designs without circuit modification?

A: Yes. HDSP-311Y maintains identical common anode configuration, 0.40-inch digit size, 14-DIP package format, and compatible forward voltage (2.15V vs. 2.1V) and test current (20mA). Pin-to-pin compatibility requires verification of the specific PCB layout, as lead count differs (10 leads vs. 13 leads).

Q: What is the difference between 20mA and 10mA test current ratings?

A: Test current specifies the standard operating current at which the display's optical and electrical characteristics are measured. The 20mA rating (LTS-4810AY, HDSP-311Y, SA04-11YWA) represents higher brightness operation. The 10mA rating (LDS-A403RI) indicates lower power consumption but requires circuit design adjustment to maintain adequate brightness.

Q: Are all substitute parts RoHS compliant?

A: Yes. HDSP-311Y, LDS-A403RI, and SA04-11YWA are all ROHS3 compliant. The original LTS-4810AY does not specify RoHS status due to its obsolete classification.

Q: How do wavelength differences affect display appearance?

A: All parts emit yellow light within the 585nm to 595nm range. LDS-A403RI and LTS-4810AY peak at 585nm (pure yellow), while HDSP-311Y peaks at 595nm (slightly warmer/orange-tinted yellow) and SA04-11YWA peaks at 590nm (intermediate). Differences are subtle and typically imperceptible in standard applications.

Q: What is the significance of the DIP pitch difference in SA04-11YWA?

A: SA04-11YWA uses 0.295-inch DIP pitch versus the standard 0.300-inch pitch of other parts. This 0.005-inch difference requires PCB footprint verification before substitution to ensure proper pin alignment and soldering.

Q: Can LDS-A403RI be used as a direct replacement despite the 10mA test current?

A: LDS-A403RI is functionally compatible but operates at half the test current. Circuit design must be evaluated to confirm that 10mA operation provides sufficient brightness for the application. Higher millicandela rating (3.5mcd vs. 2.2mcd) partially compensates for reduced current.