HDSP-A47C Equivalent & Substitute Parts

Part Overview

The HDSP-A47C is a 14-segment alphanumeric LED display module manufactured by Broadcom Limited, designed for applications requiring multi-character text and symbol display capabilities. This module features a 4-character common cathode configuration with red LEDs, operating at 1.9V forward voltage and 20mA test current. The product is currently classified as obsolete, making identification of functionally compatible alternatives essential for ongoing system support, maintenance, and new design implementations where similar display functionality is required.

Substiute Parts

HDSP-A47C

Broadcom LimitedIn Stock: 895HDSP-A47C Datasheet

Current PartRFQ

CC56-11EWA

KingbrightIn Stock: 716CC56-11EWA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the HDSP-A47C is determined by the following critical parameters:

• Package / Case: Both parts must use 36-DIP Module (0.600", 15.24mm) for direct PCB compatibility
• Number of Characters: 4-character configuration required for form factor and pinout alignment
• Common Pin Configuration: Common cathode topology for circuit interface compatibility
• Color: Red LED wavelength range (626nm–627nm) for visual consistency
• Voltage - Forward (Vf): Operating range 1.9V–2.0V for power supply compatibility
• Current - Test: 20mA specification for driver circuit design
• Moisture Sensitivity Level (MSL): MSL 1 for handling and storage compatibility

The CC56-11EWA from Kingbright meets these substitution criteria. However, the display type differs: the HDSP-A47C uses 14-segment alphanumeric display technology, while the CC56-11EWA uses 7-segment clock display technology. This difference affects character representation capability and application suitability.

Parameter Comparison

Engineering Selection Recommendations

The CC56-11EWA qualifies as a mechanical and electrical substitute based on package compatibility, pin configuration, operating voltage range, and current specifications. The part is currently in active production status, ensuring availability for procurement and supply chain continuity.

Key considerations for selection:

• Display Capability Difference: The CC56-11EWA uses 7-segment technology, limiting character representation to numeric digits and a restricted set of symbols, whereas the HDSP-A47C supports full alphanumeric characters via 14-segment architecture. Application requirements must accommodate this functional limitation.
• Brightness Differential: The CC56-11EWA provides 5.8mcd brightness compared to the HDSP-A47C range of 25mcd–80mcd. Visual intensity requirements must be evaluated for the target application.
• Voltage Tolerance: The forward voltage increases from 1.9V to 2.0V, requiring verification that power supply and current-limiting circuits can accommodate this 0.1V differential.
• Compliance Status: The CC56-11EWA carries RoHS3 compliance certification, supporting modern regulatory requirements for new designs and manufacturing environments.

Frequently Asked Questions (FAQ)

Q: Can the CC56-11EWA directly replace the HDSP-A47C in existing designs?

A: Mechanical and electrical substitution is possible due to identical 36-DIP package configuration, common cathode topology, and compatible operating parameters. However, functional substitution depends on application requirements. The 7-segment display type cannot represent all characters that the 14-segment HDSP-A47C can display. Circuit redesign may be necessary if the application requires full alphanumeric character support.

Q: What are the pinout compatibility considerations?

A: Both parts use the 36-DIP Module (0.600", 15.24mm) package format. Physical pin count and spacing are identical, enabling direct PCB socket compatibility. However, internal segment-to-pin mapping differs between 14-segment and 7-segment architectures, requiring driver firmware or control logic modification.

Q: How does the brightness difference affect system performance?

A: The CC56-11EWA operates at 5.8mcd compared to the HDSP-A47C range of 25mcd–80mcd. In applications requiring high visibility or operation in bright ambient light conditions, the reduced brightness may impact readability. Optical design and viewing angle requirements should be evaluated.

Q: Are there supply chain advantages to using the CC56-11EWA?

A: Yes. The CC56-11EWA is in active production status, whereas the HDSP-A47C is obsolete. This ensures consistent availability, shorter lead times, and stable pricing for new procurement and ongoing production requirements.

Q: What voltage adjustment is needed for the 0.1V forward voltage difference?

A: The forward voltage increases from 1.9V to 2.0V. Current-limiting resistor values in the driver circuit may require recalculation to maintain the 20mA test current specification. Power supply voltage headroom should be verified to accommodate this increase without affecting circuit stability.