HDSP-316L Equivalent & Substitute Parts

Part Overview

The HDSP-316L is a single-character red 7-segment LED display module in a 10-DIP package manufactured by Broadcom Limited. This component is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. The HDSP-316L features a 0.40-inch character height with common cathode configuration, suitable for numeric display applications requiring compact form factors and standard DIP packaging.

Substiute Parts

HDSP-316L

Broadcom LimitedIn Stock: 722HDSP-316L Datasheet

Current PartRFQ

HDSP-303A

Broadcom LimitedIn Stock: 749HDSP-303A Datasheet

MFR RecommendedRFQ

SC39-11EWA

KingbrightIn Stock: 1164SC39-11EWA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the HDSP-316L is determined by the following critical parameters:

• Display Configuration: 7-segment, single character, common cathode
• Package Compatibility: 10-DIP (0.300", 7.62mm) footprint
• Physical Envelope: Overall dimensions must accommodate PCB layout constraints
• Electrical Interface: Common cathode pin configuration for direct circuit compatibility
• Color and Wavelength: Red LED emission for visual consistency
• Environmental Classification: MSL 1 rating for standard storage and handling

The identified substitute parts maintain these core parameters while allowing variations in electrical performance characteristics (forward voltage, test current, brightness) that are within acceptable design tolerance ranges for typical display applications.

Parameter Comparison

Engineering Selection Recommendations

HDSP-303A (Broadcom Limited) is the primary substitute for the HDSP-316L. Both components are manufactured by Broadcom Limited and share identical physical dimensions and package footprint. The HDSP-303A is currently in active production status, ensuring long-term availability and supply chain stability. This part carries ROHS3 compliance certification, meeting modern environmental and regulatory requirements. The electrical parameter differences (1.8V forward voltage versus 2.1V, and 20mA test current versus 2mA) require circuit design adjustment but are within standard engineering practice for LED display applications. The HDSP-303A provides improved brightness (0.45mcd) relative to the HDSP-316L.

SC39-11EWA (Kingbright) serves as an alternative substitute when Broadcom supply is unavailable. This part maintains the 10-DIP package footprint and common cathode configuration. Physical dimensions are nearly identical with only minor height and width variations (0.512" H x 0.394" W versus 0.504" H x 0.382" W). The SC39-11EWA is ROHS3 compliant and carries active product status. This component exhibits significantly higher brightness (4.1mcd) and operates at 2.0V forward voltage with 20mA test current. The increased power dissipation (75mW maximum) must be considered in thermal design calculations. The wavelength peak of 627nm differs slightly from the HDSP-316L (635nm), resulting in a marginally different red hue perception.

Both substitute parts maintain MSL 1 classification and REACH unaffected status, ensuring compatibility with standard manufacturing and storage environments.

Frequently Asked Questions (FAQ)

Q: Can the HDSP-303A be used as a direct pin-for-pin replacement for the HDSP-316L?

A: Yes. Both components use identical 10-DIP package pinouts and common cathode configuration. However, circuit design modifications are necessary due to different electrical characteristics. The HDSP-303A requires 20mA test current compared to the HDSP-316L's 2mA, necessitating current-limiting resistor recalculation. Forward voltage differs by 0.3V (1.8V versus 2.1V), affecting power supply design considerations.

Q: What are the physical compatibility constraints when substituting with SC39-11EWA?

A: The SC39-11EWA maintains the same 10-DIP footprint and depth (0.276" D). Height and width dimensions are marginally larger (0.512" H x 0.394" W versus 0.504" H x 0.382" W). In most PCB layouts, this 0.008-inch height and 0.012-inch width increase presents no mechanical interference. Verify clearance in applications with tight vertical or horizontal space constraints.

Q: How do brightness differences affect circuit design?

A: The HDSP-316L operates at 0.37mcd, the HDSP-303A at 0.45mcd, and the SC39-11EWA at 4.1mcd. Higher brightness requires proportionally higher current draw. The SC39-11EWA's significantly elevated brightness may necessitate optical diffusion or reduced drive current to match the original visual appearance. Current-limiting resistor values must be recalculated based on the target brightness level and available supply voltage.

Q: Are there wavelength differences that affect color perception?

A: Yes. The HDSP-316L emits at 635nm peak wavelength, the HDSP-303A at 660nm, and the SC39-11EWA at 627nm. These variations produce perceptible differences in red hue. The HDSP-303A appears slightly more orange-red, while the SC39-11EWA appears slightly more pure red. In applications where color consistency is critical across multiple display units, select a single substitute part for all replacements.

Q: What is the significance of ROHS3 compliance for these parts?

A: ROHS3 compliance indicates the component meets Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, and other hazardous materials. Both substitute parts carry ROHS3 certification. The original HDSP-316L does not specify RoHS status due to its obsolete classification. ROHS3 compliance is mandatory for new designs and many regulated markets.

Q: Can these parts be used interchangeably in existing designs without modification?

A: No. While all three parts share the same package and pinout, electrical parameter differences require circuit design review. Forward voltage, test current, and brightness variations necessitate resistor value recalculation and potentially power supply adjustment. Direct substitution without design verification may result in inadequate brightness, excessive current draw, or component failure.