HDSP-315Y 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The HDSP-315Y is a single-character 7-segment LED display module manufactured by Broadcom Limited, featuring a 0.40" yellow digit with common anode configuration. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and production continuity. The display operates at 2V forward voltage with 10mA test current and is housed in a standard 10-DIP package.

Substiute Parts

HDSP-315Y

Broadcom LimitedIn Stock: 903HDSP-315Y Datasheet

Current PartRFQ

SA39-11YWA

KingbrightIn Stock: 956SA39-11YWA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the HDSP-315Y is determined by the following critical parameters:

• Package Compatibility: 10-DIP (0.300", 7.62mm) form factor for direct PCB mounting
• Display Configuration: Single-character 7-segment with common anode topology
• Color Specification: Yellow LED emission
• Electrical Characteristics: Forward voltage range (2V to 2.1V), test current (10mA to 20mA), and wavelength (583nm to 590nm)
• Physical Dimensions: Digit size approximately 0.39" to 0.40" with overall height and width within 0.512" H x 0.394" W envelope

The SA39-11YWA from Kingbright meets all substitution criteria while maintaining functional and mechanical compatibility with the HDSP-315Y.

Parameter Comparison

Engineering Selection Recommendations

The SA39-11YWA serves as a direct functional substitute for the HDSP-315Y. The substitute part maintains identical package geometry and pinout configuration, ensuring mechanical and electrical compatibility without PCB redesign.

The SA39-11YWA is classified as active product status with RoHS3 compliance, providing supply chain continuity and regulatory alignment for new production. Both parts carry REACH Unaffected status and EAR99 classification.

The SA39-11YWA exhibits higher luminous intensity (3mcd versus 1.8mcd) and lower maximum power dissipation (75mW versus 105mW), making it suitable for applications requiring improved visibility or reduced thermal load. The forward voltage differential (2.1V versus 2V) and test current increase (20mA versus 10mA) are within acceptable design margins for standard current-limiting resistor configurations.

Frequently Asked Questions (FAQ)

Q: Can the SA39-11YWA replace the HDSP-315Y without circuit modification?

A: Yes. Both parts use identical 10-DIP package geometry and common anode configuration. The forward voltage and current specifications are compatible with standard LED driver circuits. Existing current-limiting resistor values may require minor adjustment to optimize brightness, but direct substitution is electrically feasible.

Q: What is the significance of the digit size difference (0.40" versus 0.39")?

A: The 0.01" difference is within typical manufacturing tolerance for 7-segment displays and does not affect functional compatibility or PCB mounting. Visual appearance will be imperceptibly different in most applications.

Q: Why does the SA39-11YWA have higher test current (20mA versus 10mA)?

A: The higher test current specification reflects the SA39-11YWA's increased luminous intensity (3mcd versus 1.8mcd). This allows the substitute part to deliver brighter display output at equivalent or lower drive currents, depending on circuit design.

Q: Are there compliance differences between the two parts?

A: The HDSP-315Y is obsolete with no RoHS status specified. The SA39-11YWA is active product with RoHS3 compliance, making it suitable for applications subject to RoHS regulations. Both parts are REACH Unaffected.

Q: What is the wavelength difference between 583nm and 590nm?

A: Both wavelengths fall within the yellow LED spectrum. The 7nm difference represents a slight shift toward longer wavelengths (more orange-yellow) in the SA39-11YWA. This difference is visually minimal and does not affect functional compatibility.