LDS-HTC514RI 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The LDS-HTC514RI is a single-character red 7-segment LED display module manufactured by Lumex Opto/Components Inc. This display is a common cathode configuration housed in a 10-DIP package with a 0.56" digit height. The part is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are identified when equivalent functional performance can be achieved within the same package footprint and pin configuration while maintaining compatibility with existing circuit designs. The LDS-HTC514RI has been identified as having one direct substitute option based on matching display type, character count, common pin configuration, and package specifications.

Substiute Parts

LDS-HTC514RI

Lumex Opto/Components Inc.In Stock: 774LDS-HTC514RI Datasheet

Current PartRFQ

HDSP-H103

Broadcom LimitedIn Stock: 2171HDSP-H103 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the LDS-HTC514RI is determined by the following mandatory parameters:

Primary Matching Criteria:

• Display Type: 7-Segment (numeric/alphanumeric character display)
• Number of Characters: 1 (single character module)
• Common Pin Configuration: Common Cathode (cathode connection shared across all segments)
• Digit/Alpha Size: 0.56" (14.22mm) nominal height
• Color: Red wavelength emission
• Package / Case: 10-DIP (0.600", 15.24mm) dual-in-line package

Electrical Parameters (Allowed Variation Range):

• Forward Voltage (Vf): Substitute parts must operate within typical circuit supply voltage ranges
• Current - Test: Substitute parts must be compatible with standard current-limiting resistor designs
• Power Dissipation: Substitute parts must not exceed thermal design limits of the application

Compliance Requirements:

• RoHS3 Compliance: Required
• Moisture Sensitivity Level (MSL): 1 (Unlimited) preferred
• REACH Status: REACH Unaffected preferred

The HDSP-H103 manufactured by Broadcom Limited meets all primary matching criteria and compliance requirements, qualifying it as a direct substitute for the LDS-HTC514RI.

Parameter Comparison

Engineering Selection Recommendations

LDS-HTC514RI Selection Criteria:

• Use when existing circuit design specifies 2.1V forward voltage operation
• Use when 10mA test current is required by application specifications
• Use when 635nm wavelength (pure red) is required for color consistency
• Use when 3.9mcd brightness specification is required
• Use when 105mW maximum power dissipation is within thermal budget

HDSP-H103 Selection Criteria:

• Use as substitute when circuit design can accommodate 1.7V forward voltage
• Use when lower power consumption (37mW maximum) is advantageous
• Use when 5mA test current is compatible with application requirements
• Use when 4.2mcd brightness (slightly higher) is acceptable
• Use when 645nm wavelength (orange-red hue) is acceptable for visual application
• Use when PCB clearance permits 0.670" height (0.078" shorter than LDS-HTC514RI)

Compliance Status: Both parts maintain active product status, full RoHS3 compliance, unlimited moisture sensitivity rating, and REACH unaffected status. Both are suitable for applications requiring regulatory compliance in consumer and industrial electronics.

Frequently Asked Questions (FAQ)

Q: Can the HDSP-H103 be used as a direct pin-for-pin replacement for the LDS-HTC514RI?

A: Yes. Both parts use identical 10-DIP package configuration with 0.600" (15.24mm) pin spacing. Pin assignments for common cathode 7-segment displays are standardized across these manufacturers. Direct PCB substitution is possible without circuit board redesign.

Q: What electrical circuit modifications are required when substituting HDSP-H103 for LDS-HTC514RI?

A: The forward voltage difference (2.1V vs. 1.7V) requires recalculation of current-limiting resistor values. The test current difference (10mA vs. 5mA) also affects resistor selection. Use Ohm's law with the new voltage and current specifications to determine appropriate resistor values for your specific supply voltage. No other circuit modifications are required.

Q: Will the HDSP-H103 fit in the same physical space as the LDS-HTC514RI?

A: The HDSP-H103 is 0.078" (approximately 2mm) shorter in height (0.670" vs. 0.748"). Verify that your PCB layout and enclosure design provide adequate clearance. The width and depth dimensions are essentially identical. No other dimensional conflicts exist.

Q: Is the color difference between 635nm and 645nm visually significant?

A: The 10nm wavelength difference represents a shift toward orange-red. In applications where color consistency with other display elements is critical, this difference may be perceptible. In general numeric display applications, both wavelengths are perceived as red. Evaluate based on your specific application requirements.

Q: Are both parts suitable for high-reliability applications?

A: Both parts carry RoHS3 compliance, unlimited moisture sensitivity rating (MSL 1), and REACH unaffected status. Both maintain active product status. Selection between them should be based on electrical parameter compatibility with your circuit design rather than reliability considerations, as both meet equivalent compliance standards.

Q: What is the brightness difference between these parts?

A: The HDSP-H103 has a slightly higher millicandela rating (4.2mcd vs. 3.9mcd), representing approximately 7.7% higher brightness. This difference is generally not perceptible in typical display applications but may be relevant in high-ambient-light environments or when brightness consistency across multiple displays is critical.