PDC54-11EWA Equivalent & Substitute Parts

Part Overview

The PDC54-11EWA is a 14-segment alphanumeric LED display module manufactured by Kingbright. This 2-character display operates as a common cathode configuration with red LED elements, designed for applications requiring alphanumeric character representation. The module is currently in active product status with 1054 units available in inventory. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling component interchangeability in circuit designs where the PDC54-11EWA may be unavailable or when design requirements permit alternative sourcing.

Substiute Parts

PDC54-11EWA

KingbrightIn Stock: 1077PDC54-11EWA Datasheet

Current PartRFQ

HDSP-A27C

Broadcom LimitedIn Stock: 2296HDSP-A27C Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PDC54-11EWA is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

• Number of Characters: 2
• Display Type: 14-Segment, Alphanumeric
• Common Pin Configuration: Common Cathode
• Color: Red
• Voltage - Forward (Vf) Typical: 1.9V
• Package / Case: 18-DIP (0.600", 15.24mm)

Allowable Variation Parameters:

• Current - Test: Substitute may operate at higher current (10mA to 20mA) provided circuit design accommodates increased current draw
• Digit/Alpha Size: Minor dimensional variation (0.53" to 0.54") acceptable within mechanical envelope constraints
• Physical Dimensions: Slight height and depth variation permitted (0.317" to 0.276" depth; 0.835" to 0.827" height) within PCB mounting tolerance
• Wavelength - Peak: Variation from 627nm to 635nm acceptable for red LED spectrum
• Millicandela Rating: Higher brightness rating (6mcd to 18mcd-36mcd) represents performance enhancement

The HDSP-A27C from Broadcom Limited meets all mandatory matching parameters and represents a valid substitute within the allowable variation range.

Parameter Comparison

Engineering Selection Recommendations

PDC54-11EWA Selection Criteria:

• Primary choice when Kingbright sourcing is established and inventory is available
• Operates at 10mA test current, suitable for power-constrained applications
• 6mcd brightness rating appropriate for standard visibility requirements
• Active product status ensures continued availability

HDSP-A27C Selection Criteria:

• Valid substitute when Broadcom Limited component sourcing is preferred or PDC54-11EWA is unavailable
• Higher test current specification (20mA) requires circuit design verification to ensure current supply capability
• Enhanced brightness rating (18mcd-36mcd) provides improved visibility margin in high-ambient-light environments
• RoHS3 Compliant, REACH Unaffected, and EAR99 classification provide regulatory compliance documentation
• Moisture Sensitivity Level 1 (Unlimited) indicates no special storage or handling requirements
• Active product status ensures continued availability
• Slightly reduced depth (7.00mm vs 8.05mm) may provide PCB layout advantages in space-constrained designs

Both parts maintain identical electrical interface characteristics (1.9V forward voltage, common cathode configuration, 18-DIP package) and are mechanically compatible within standard PCB mounting tolerances.

Frequently Asked Questions (FAQ)

Q: Can HDSP-A27C directly replace PDC54-11EWA in existing circuit designs?

A: Direct replacement is possible with circuit design verification. The HDSP-A27C operates at 20mA test current compared to PDC54-11EWA's 10mA. The circuit's current supply must be capable of delivering the higher current. Forward voltage (1.9V) and package configuration (18-DIP) are identical, ensuring pin-compatible operation.

Q: What is the significance of the different wavelength specifications (627nm vs 635nm)?

A: Both wavelengths fall within the red LED spectrum. The 627nm (PDC54-11EWA) represents a slightly shorter wavelength, while 635nm (HDSP-A27C) represents a slightly longer wavelength. Both are visually perceived as red and are suitable for alphanumeric display applications. The difference does not affect electrical compatibility.

Q: Why does HDSP-A27C have higher millicandela rating (18mcd-36mcd vs 6mcd)?

A: The HDSP-A27C provides enhanced brightness output, resulting from higher current operation (20mA vs 10mA). This represents a performance improvement and does not affect compatibility. Applications requiring higher visibility in bright ambient conditions benefit from this specification.

Q: Are there mechanical constraints when substituting HDSP-A27C for PDC54-11EWA?

A: Mechanical compatibility is maintained. The HDSP-A27C is slightly shallower (7.00mm vs 8.05mm depth) and marginally shorter (21.00mm vs 21.20mm height). These variations fall within standard PCB mounting tolerances. Width remains identical (25.20mm). Verify PCB layout clearances in space-constrained applications.

Q: What compliance certifications apply to HDSP-A27C?

A: HDSP-A27C carries RoHS3 Compliance, REACH Unaffected status, and EAR99 export classification. Moisture Sensitivity Level is 1 (Unlimited), indicating no special environmental storage requirements. These certifications support regulatory compliance in regulated industries.

Q: How do I determine which substitute is appropriate for my application?

A: Selection depends on current supply capability and brightness requirements. If the circuit is designed for 10mA operation and standard brightness is acceptable, PDC54-11EWA is the primary choice. If higher brightness is required or 20mA current supply is available, HDSP-A27C is the appropriate substitute. Both maintain identical electrical interface and package compatibility.