HDSP-331Y 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The HDSP-331Y is a single-character, 7-segment LED display module manufactured by Broadcom Limited. This component features a 0.30" yellow LED display with common anode configuration, designed for numeric and alphanumeric applications. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications. The HDSP-331Y operates at 2.15V forward voltage with a 20mA test current and delivers 1.5mcd brightness output.

Substiute Parts

HDSP-331Y

Broadcom LimitedIn Stock: 1148HDSP-331Y Datasheet

Current PartRFQ

LDS-A303RI

Lumex Opto/Components Inc.In Stock: 712LDS-A303RI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the HDSP-331Y must satisfy the following critical parameters to ensure functional and mechanical compatibility:

Primary Compatibility Criteria:

• Display Type: 7-Segment configuration
• Number of Characters: Single character (1)
• Common Pin Configuration: Common Anode
• Color: Yellow
• Package Type: 14-DIP form factor with compatible lead count and pitch (0.300", 7.62mm)
• Digit Size: 0.30" to 0.31" range (7.62mm to 7.87mm)
• Voltage Range: Forward voltage between 2.1V and 2.15V
• Current Rating: Test current of 10mA to 20mA
• Wavelength: Peak wavelength in the 585nm to 595nm yellow spectrum range

The LDS-A303RI from Lumex Opto/Components Inc. meets these substitution criteria. While the LDS-A303RI exhibits slightly different electrical characteristics (2.1V vs. 2.15V forward voltage, 10mA vs. 20mA test current) and enhanced brightness (2.5mcd vs. 1.5mcd), these variations remain within acceptable engineering tolerances for 7-segment display applications. The physical dimensions are nearly identical, with digit size increasing marginally from 0.30" to 0.31", and the 14-DIP package configuration is maintained.

Parameter Comparison

Engineering Selection Recommendations

The LDS-A303RI qualifies as a direct substitute for the HDSP-331Y based on functional and mechanical compatibility. The substitute part maintains active product status with Lumex Opto/Components Inc., ensuring ongoing availability and supply chain continuity. Both components carry identical REACH compliance status (REACH Unaffected) and equivalent moisture sensitivity ratings (MSL 1 - Unlimited), supporting long-term reliability in standard operating environments.

The LDS-A303RI exhibits lower forward voltage (2.1V vs. 2.15V) and reduced test current (10mA vs. 20mA), resulting in decreased power dissipation. The substitute part delivers higher luminous intensity (2.5mcd vs. 1.5mcd), providing enhanced display visibility. The wavelength shift from 595nm to 585nm remains within the yellow spectrum range and produces no perceptible color difference in typical applications.

The lead count difference (10 leads vs. 11 leads) reflects internal circuit design variations between manufacturers. Both components maintain the 14-DIP package footprint and 0.300" pitch standard, ensuring mechanical compatibility with existing PCB layouts. Physical dimension variations are minimal and fall within standard manufacturing tolerances for this component category.

Frequently Asked Questions (FAQ)

Q: Can the LDS-A303RI replace the HDSP-331Y in existing circuit designs without modification?

A: The LDS-A303RI is mechanically and functionally compatible with the HDSP-331Y. Both components feature identical 14-DIP package configuration, common anode architecture, and 7-segment display format. The lower forward voltage and test current of the substitute part may require minor adjustments to current-limiting resistor values in the driving circuit to maintain consistent brightness levels. Verify that the PCB layout accommodates the 10-lead configuration of the LDS-A303RI.

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

A: The LDS-A303RI operates at 2.1V forward voltage compared to the HDSP-331Y's 2.15V, a 50mV reduction. Test current decreases from 20mA to 10mA, resulting in lower power consumption. The substitute part delivers 2.5mcd brightness versus 1.5mcd for the original part, representing a 67% increase in luminous intensity. Peak wavelength shifts from 595nm to 585nm, both within the yellow spectrum.

Q: Are there any compliance or regulatory differences between the HDSP-331Y and LDS-A303RI?

A: Both components carry identical REACH compliance status (REACH Unaffected) and equivalent moisture sensitivity levels (MSL 1 - Unlimited). Both are classified under the same HTSUS code (8541.41.0000) and ECCN designation (EAR99). The LDS-A303RI maintains RoHS3 compliance, supporting modern environmental and regulatory requirements.

Q: How do the physical dimensions compare, and will the LDS-A303RI fit existing mechanical assemblies?

A: Physical dimensions are nearly identical. The HDSP-331Y measures 0.748" H x 0.398" W x 0.240" D, while the LDS-A303RI measures 0.752" H x 0.401" W x 0.240" D. These differences of 0.004" in height and 0.003" in width fall within standard mechanical tolerances and will not affect fit in typical display assemblies. The 14-DIP package pitch remains constant at 0.300" (7.62mm).

Q: What is the significance of the lead count difference (11 leads vs. 10 leads)?

A: The lead count difference reflects internal circuit design variations between Broadcom and Lumex. The 14-DIP package accommodates both configurations. Verify the specific pinout of the LDS-A303RI against your circuit schematic to ensure correct signal routing. The functional 7-segment display segments and common anode pin remain consistent between both parts.

Q: Why is the HDSP-331Y classified as obsolete, and what does this mean for component sourcing?

A: Obsolete status indicates that Broadcom Limited has discontinued manufacturing and support for the HDSP-331Y. The LDS-A303RI maintains active product status with Lumex Opto/Components Inc., ensuring continued availability, technical support, and supply chain reliability. Transitioning to the LDS-A303RI eliminates future sourcing challenges associated with obsolete components.