LTS-313AHR 7-Segment LED Display Equivalent & Substitute Parts

Part Overview

The LTS-313AHR is a single-character red 7-segment LED display module manufactured by Lite-On Inc. in a 10-DIP package. This component is actively produced and widely used in numeric display applications requiring compact form factors and standard common cathode configuration. Substitute parts become necessary when addressing supply chain constraints, inventory availability, or specific application requirements within the allowable electrical and mechanical parameter ranges.

Substiute Parts

LTS-313AHR

Lite-On Inc.In Stock: 1168LTS-313AHR Datasheet

Current PartRFQ

HDSP-7513

Broadcom LimitedIn Stock: 1845HDSP-7513 Datasheet

MFR RecommendedRFQ

HDSP-A103

Broadcom LimitedIn Stock: 1435HDSP-A103 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LTS-313AHR is determined by the following mandatory parameters:

• Display Type: 7-Segment (single character only)
• Common Pin Configuration: Common Cathode
• Color: Red wavelength range (635nm–645nm acceptable)
• Digit/Alpha Size: 0.30" (7.62mm)
• Package Type: 10-DIP
• RoHS Compliance: ROHS3 Compliant
• Product Status: Active

The substitute parts HDSP-7513 and HDSP-A103 meet all mandatory substitution criteria. Both are manufactured by Broadcom Limited, feature identical display type, common cathode configuration, red color, matching digit size, 10-DIP packaging, ROHS3 compliance, and active product status. Electrical parameter variations (forward voltage, test current, brightness) fall within acceptable ranges for common cathode 7-segment displays and do not preclude substitution.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active product status and ROHS3 compliance, ensuring long-term availability and regulatory conformance. The LTS-313AHR operates at higher forward voltage (2V) and test current (20mA) compared to the Broadcom substitutes (1.7V, 5mA), resulting in higher power dissipation (75mW vs. 52mW and 37mW). The HDSP-A103 provides the highest brightness rating (3.6mcd) with the lowest power dissipation (37mW) and operates at a longer wavelength peak (645nm). The HDSP-7513 matches the LTS-313AHR wavelength (635nm) while maintaining lower power requirements. Selection between substitutes depends on application-specific brightness requirements and power budget constraints within the common cathode 7-segment display category.

Frequently Asked Questions (FAQ)

Q: Can HDSP-7513 or HDSP-A103 be used as direct replacements for LTS-313AHR in existing designs?

A: Both parts share identical display type (7-segment), common cathode configuration, red color, 0.30" digit size, and 10-DIP package type. Electrical parameter differences (forward voltage, test current, brightness) are inherent variations within the 7-segment LED display category. Circuit design must accommodate the lower forward voltage (1.7V vs. 2V) and reduced test current (5mA vs. 20mA) of the Broadcom parts.

Q: What are the physical dimension differences between LTS-313AHR and the substitute parts?

A: The LTS-313AHR measures 0.738" H × 0.388" W × 0.200" D (18.75mm × 9.85mm × 5.08mm). Both HDSP-7513 and HDSP-A103 measure 0.500" H × 0.300" W × 0.390" D (12.70mm × 7.62mm × 9.91mm). While digit size remains constant at 0.30" (7.62mm), overall package dimensions differ. PCB layout and mechanical clearance must be verified before substitution.

Q: Are there brightness differences between the substitute parts?

A: Yes. The LTS-313AHR is rated at 2mcd, HDSP-7513 at 1.05mcd, and HDSP-A103 at 3.6mcd. The HDSP-A103 provides higher brightness output, while HDSP-7513 provides lower brightness. Application visibility requirements determine which substitute is appropriate.

Q: Do all three parts meet the same compliance standards?

A: All three parts are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). Both Broadcom parts include REACH Unaffected status. Compliance certifications are equivalent across all three options.

Q: What is the significance of the wavelength difference between 635nm and 645nm?

A: The LTS-313AHR and HDSP-7513 both emit at 635nm (standard red). The HDSP-A103 emits at 645nm (deep red). This represents a shift toward longer wavelengths within the red spectrum. Visual color perception differences may be apparent in side-by-side comparison, though both remain within the red LED category.