HDSP-B47G Equivalent & Substitute Parts

Part Overview

The HDSP-B47G is a 4-character 7-segment LED display module manufactured by Broadcom Limited. It features a 0.56" digit height with green color output, common cathode configuration, and 12-DIP packaging. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing production and maintenance applications. Substitute parts must maintain electrical compatibility, mechanical fit, and display performance characteristics.

Substiute Parts

HDSP-B47G

Broadcom LimitedIn Stock: 806HDSP-B47G Datasheet

Current PartRFQ

LDQ-N512RI

Lumex Opto/Components Inc.In Stock: 872LDQ-N512RI Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the HDSP-B47G is determined by strict alignment of the following parameters:

• Number of Characters: Must be 4
• Digit/Alpha Size: Must be 0.56" (14.22mm)
• Display Type: Must be 7-Segment
• Common Pin Configuration: Must be Common Cathode
• Color: Must be Green
• Voltage - Forward (Vf): Must be 2.2V
• Package / Case: Must be 12-DIP (0.600", 15.24mm)
• Wavelength - Peak: Must be 565nm

The LDQ-N512RI from Lumex Opto/Components Inc. meets all substitution criteria. Variations in test current (10mA vs. 20mA), millicandela rating (3.9mcd vs. 3.2mcd), and power dissipation are within acceptable tolerance ranges for this component category and do not affect functional substitutability.

Parameter Comparison

Engineering Selection Recommendations

The LDQ-N512RI is the qualified substitute for the obsolete HDSP-B47G. Selection is based on the following factors:

Product Status: The HDSP-B47G is classified as obsolete. The LDQ-N512RI maintains active product status, ensuring continued availability and manufacturer support.

Compliance & Certifications: Both parts carry identical REACH Status (REACH Unaffected) and ECCN classification (EAR99). The LDQ-N512RI includes RoHS3 Compliance certification, providing additional regulatory alignment for modern manufacturing environments.

Electrical Compatibility: Forward voltage (2.2V), wavelength (565nm), and package configuration (12-DIP) are identical. The test current differential (10mA vs. 20mA) reflects improved efficiency in the substitute part and does not compromise circuit compatibility when proper current-limiting resistors are employed.

Mechanical Fit: Physical dimensions are equivalent within manufacturing tolerance (0.748" H vs. 0.752" H; 1.980" W vs. 2.016" W). Both parts use identical 12-DIP (0.600", 15.24mm) packaging, ensuring direct PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can the LDQ-N512RI be used as a direct replacement for the HDSP-B47G without circuit modification?

A: Yes. Both parts share identical forward voltage (2.2V), common cathode configuration, and 12-DIP package. Existing current-limiting resistor networks will function with the LDQ-N512RI. The lower test current (10mA vs. 20mA) indicates improved efficiency and does not require circuit redesign.

Q: What is the significance of the millicandela rating difference (3.9mcd vs. 3.2mcd)?

A: The LDQ-N512RI provides higher luminous intensity (3.9mcd) compared to the HDSP-B47G (3.2mcd). This represents improved brightness performance and is compatible with applications designed for the original part.

Q: Are there mechanical fit concerns due to dimensional variations?

A: No. Height variation (0.748" vs. 0.752") and width variation (1.980" vs. 2.016") are within standard manufacturing tolerances for 12-DIP components. Both parts use identical 0.600" (15.24mm) DIP pitch and will fit standard DIP sockets and PCB layouts.

Q: Does the power dissipation difference affect thermal design?

A: The LDQ-N512RI has a maximum power dissipation of 105mW compared to 65mW for the HDSP-B47G. This reflects the higher brightness capability. Existing thermal designs for the HDSP-B47G remain valid; the substitute part operates within acceptable thermal margins for standard PCB layouts.

Q: What compliance advantages does the LDQ-N512RI provide?

A: The LDQ-N512RI carries RoHS3 Compliance certification, whereas the HDSP-B47G does not specify RoHS status. Both parts maintain REACH Unaffected status and EAR99 ECCN classification. The RoHS3 compliance of the substitute part aligns with current environmental and regulatory requirements in manufacturing.