LTC-3718G Equivalent & Substitute Parts

Part Overview

The LTC-3718G is a 3.5-character green 7-segment LED display module manufactured by Lite-On Inc., designed for clock and numeric display applications. This component features a common cathode configuration with a 0.34" digit height and operates at 2.1V forward voltage with 20mA test current. The product is currently classified as obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity.

Substiute Parts

LTC-3718G

Lite-On Inc.In Stock: 822LTC-3718G Datasheet

Current PartRFQ

LTC-3710G

Lite-On Inc.In Stock: 1096LTC-3710G Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTC-3718G is determined by the following critical parameters:

• Display Configuration: Common cathode 7-segment architecture
• Electrical Characteristics: Forward voltage of 2.1V, test current of 20mA, and 1.8mcd brightness rating
• Optical Properties: Green color with 565nm peak wavelength
• Package Compatibility: 24-DIP (0.400", 10.16mm) form factor
• Functional Capability: 7-segment clock display type

The LTC-3710G qualifies as a substitute based on matching electrical specifications, common cathode configuration, identical package type, and compatible optical characteristics. The primary difference is character count (4 characters versus 3.5 characters) and digit size (0.30" versus 0.34"), which represents a design trade-off rather than an incompatibility.

Parameter Comparison

Engineering Selection Recommendations

The LTC-3710G is the designated manufacturer-recommended substitute for the obsolete LTC-3718G. Both components share identical electrical specifications, optical properties, and package footprints, ensuring direct compatibility at the circuit level.

The LTC-3710G offers the advantage of active product status with current manufacturing support and documented RoHS3 compliance. The LTC-3710G maintains unlimited moisture sensitivity level (MSL 1) classification, consistent with the original part.

Selection between these parts depends on display format requirements: the LTC-3718G provides 3.5-character display capability with larger 0.34" digits, while the LTC-3710G provides 4-character display capability with smaller 0.30" digits. Both operate within identical electrical parameters and share the same 24-DIP package footprint, allowing for direct substitution in applications where character count and digit size accommodate the design constraints.

Frequently Asked Questions (FAQ)

Q: Can the LTC-3710G directly replace the LTC-3718G in existing designs?

A: Yes, the LTC-3710G is electrically and mechanically compatible with the LTC-3718G. Both components feature identical 24-DIP package footprints, forward voltage (2.1V), test current (20mA), brightness rating (1.8mcd), and wavelength (565nm). PCB layout modifications are not required for package compatibility.

Q: What are the key differences between these two parts?

A: The primary differences are character count and digit size. The LTC-3718G displays 3.5 characters at 0.34" height, while the LTC-3710G displays 4 characters at 0.30" height. Both maintain identical electrical and optical specifications.

Q: Why is the LTC-3718G classified as obsolete?

A: The LTC-3718G is no longer in active production. The LTC-3710G serves as the current-generation equivalent, offering the same electrical performance with active manufacturing support.

Q: Are there compliance differences between these parts?

A: The LTC-3710G carries RoHS3 compliance certification. Both parts share EAR99 ECCN classification and identical HTSUS codes (8541.41.0000).

Q: Does package type affect substitution?

A: No. Both the LTC-3718G and LTC-3710G use the 24-DIP (0.400", 10.16mm) package type, ensuring identical pin spacing and footprint compatibility.