HDSP-511A 7-Segment LED Display - Equivalent & Substitute Parts

Part Overview

The HDSP-511A is a single-character, 0.56" red 7-segment LED display manufactured by Broadcom Limited. This common anode display operates at 1.85V forward voltage with a 20mA test current and delivers 6.5mcd brightness at a 660nm peak wavelength. The component is packaged in a 10-DIP (0.600", 15.24mm) configuration and maintains Active product status with full RoHS3 compliance.

Substitute parts become necessary when the primary component faces supply constraints, inventory limitations, or when design requirements permit operation within the electrical and mechanical tolerances of alternative manufacturers' offerings.

Key Parameters

Parameter	HDSP-511A
Display Type	7-Segment
Number of Characters	1
Common Pin Configuration	Common Anode
Color	Red
Digit Size	0.56" (14.22mm)
Package Type	10-DIP (0.600", 15.24mm)
Voltage - Forward (Vf) Typical	1.85V
Current - Test	20mA
Millicandela Rating	6.5mcd
Wavelength - Peak	660nm
Power Dissipation (Max)	30mW
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitution eligibility for the HDSP-511A is determined by the following mandatory parameters:

Display Type: 7-Segment (all substitutes must match)
Number of Characters: 1 (all substitutes must match)
Common Pin Configuration: Common Anode (all substitutes must match)
Color: Red (all substitutes must match)
Package Type: 10-DIP (0.600", 15.24mm) (all substitutes must match)
Voltage - Forward (Vf) Typical: 1.8V to 1.9V (acceptable range for circuit compatibility)
Current - Test: 10mA to 20mA (acceptable range for driver circuit design)
Wavelength - Peak: 627nm to 660nm (acceptable range for red spectrum)

The three substitute parts listed below meet all mandatory matching criteria and fall within acceptable electrical parameter ranges.

Parameter Comparison

Parameter	HDSP-511A (Broadcom)	LAP-601VB (Rohm)	XDMR14A (SunLED)	XDUR14A (SunLED)
Manufacturer	Broadcom Limited	Rohm Semiconductor	SunLED	SunLED
Display Type	7-Segment	7-Segment	7-Segment	7-Segment
Number of Characters	1	1	1	1
Common Pin Configuration	Common Anode	Common Anode	Common Anode	Common Anode
Color	Red	Red	Red	Red
Digit Size	0.56" (14.22mm)	0.57" (14.60mm)	0.56" (14.22mm)	0.56" (14.22mm)
Package Type	10-DIP (0.600", 15.24mm)	10-DIP (0.600", 15.24mm)	10-DIP (0.600", 15.24mm)	10-DIP (0.600", 15.24mm)
Voltage - Forward (Vf) Typical	1.85V	1.9V	1.8V	1.9V
Current - Test	20mA	10mA	10mA	10mA
Millicandela Rating	6.5mcd	36mcd	34mcd	6.4mcd
Wavelength - Peak	660nm	650nm	660nm	627nm
Power Dissipation (Max)	30mW	448mW	75mW	75mW
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Obsolete	Active
Packaging Format	Bulk	Bulk	Tube	Tube

Engineering Selection Recommendations

All substitute parts maintain ROHS3 compliance and meet the mandatory electrical and mechanical compatibility criteria for the HDSP-511A. Selection should prioritize product status and supply availability.

LAP-601VB (Rohm Semiconductor) and XDUR14A (SunLED) both carry Active product status, ensuring long-term availability and manufacturing support. XDMR14A (SunLED) carries Obsolete status and should be avoided for new designs or long-term production requirements.

XDUR14A provides the closest electrical match to the HDSP-511A with equivalent forward voltage (1.9V) and comparable millicandela rating (6.4mcd vs. 6.5mcd). LAP-601VB offers significantly higher brightness (36mcd) and lower test current (10mA), suitable for applications where increased luminosity is acceptable within circuit design constraints.

Frequently Asked Questions (FAQ)

Q: Can XDMR14A be used as a substitute despite its Obsolete status?

A: XDMR14A meets all mandatory electrical and mechanical parameters for substitution. However, Obsolete status indicates discontinued manufacturing. Use is limited to applications with existing inventory or where supply chain risk is acceptable.

Q: What is the impact of different millicandela ratings among substitutes?

A: Millicandela rating determines display brightness. LAP-601VB (36mcd) and XDMR14A (34mcd) deliver significantly higher brightness than the HDSP-511A (6.5mcd) and XDUR14A (6.4mcd). Circuit design must accommodate this difference through current-limiting resistor adjustment to prevent over-driving the display or exceeding power dissipation limits.

Q: Are there packaging differences between substitutes?

A: HDSP-511A and LAP-601VB are supplied in Bulk packaging. XDMR14A and XDUR14A are supplied in Tube packaging. Both formats are compatible with standard PCB assembly processes; packaging selection depends on production volume and handling requirements.

Q: How do forward voltage differences affect circuit design?

A: All substitutes operate within 1.8V to 1.9V, compared to the HDSP-511A at 1.85V. This 0.05V variation is within typical circuit tolerance and does not require redesign of current-limiting resistor networks in standard applications.

Q: What is the significance of wavelength differences?

A: All substitutes emit red light within the 627nm to 660nm range. Wavelength differences may produce slight color variations in visual appearance but do not affect functional compatibility or circuit operation.

Q: Can LAP-601VB be used if the circuit is designed for 20mA operation?

A: LAP-601VB operates at 10mA test current. Circuits designed for 20mA operation must be redesigned to accommodate the lower current specification. Operating LAP-601VB at 20mA exceeds its rated test current and may reduce component lifespan.

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