QDSP-F503 Equivalent & Substitute Parts

Part Overview

The QDSP-F503 is a Display Module - LED Character and Numeric Character manufactured by Broadcom Limited. This component is classified as obsolete and is no longer in active production. With 822 units currently in stock, identifying suitable substitute components is essential for ongoing system support and new design implementations where this display module is specified.

Substiute Parts

QDSP-F503

Broadcom LimitedIn Stock: 870QDSP-F503 Datasheet

Current PartRFQ

HDSP-F503

Broadcom LimitedIn Stock: 1892HDSP-F503 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The HDSP-F503 qualifies as a manufacturer-recommended substitute for the QDSP-F503 based on the following substitution criteria:

Functional Compatibility:

• Both components are LED display modules from Broadcom Limited
• Both are green-colored display devices
• Both serve the same functional purpose in character and numeric display applications

Electrical Parameters:

• Forward Voltage (Vf): 2.1V
• Test Current: 10mA
• Wavelength - Peak: 566nm (green spectrum)
• Power Dissipation (Max): 105mW

Mechanical Parameters:

• Package Type: 10-DIP (0.300", 7.62mm)
• Physical Dimensions: 0.508" H x 0.385" W x 0.250" D (12.90mm x 9.79mm x 6.36mm)
• Digit Size: 0.40" (10.16mm)

Regulatory Compliance:

• Moisture Sensitivity Level (MSL): 1 (Unlimited) - identical to original
• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

Parameter Comparison

Engineering Selection Recommendations

The HDSP-F503 is the manufacturer-recommended substitute for the obsolete QDSP-F503. Selection of this substitute is supported by:

Product Status Alignment: The HDSP-F503 maintains active production status with 1850 units in current inventory, ensuring long-term availability and supply chain continuity compared to the obsolete QDSP-F503.

Regulatory Compliance: Both components share identical Moisture Sensitivity Level (MSL) ratings of 1 (Unlimited), eliminating moisture handling and storage requirement changes. The HDSP-F503 carries ROHS3 Compliant and REACH Unaffected certifications, meeting modern environmental and regulatory standards.

Functional Equivalence: Both components are green LED display modules from Broadcom Limited, designed for character and numeric display applications. The HDSP-F503 provides documented electrical and mechanical specifications that enable direct circuit-level evaluation.

Frequently Asked Questions (FAQ)

Q: Why is the QDSP-F503 being phased out? A: The QDSP-F503 is classified as obsolete by the manufacturer. The HDSP-F503 represents the active production equivalent that fulfills the same functional role.

Q: Are the QDSP-F503 and HDSP-F503 pin-compatible? A: Both components use 10-DIP (0.300", 7.62mm) packaging, which provides mechanical compatibility. Circuit-level compatibility requires verification of the specific pin configuration and electrical characteristics in your application schematic.

Q: What are the key electrical differences between these components? A: The HDSP-F503 specifies a forward voltage of 2.1V and test current of 10mA. Detailed electrical specifications for the QDSP-F503 are not provided in available documentation. Verification against your circuit design is required.

Q: Does the substitute require any design modifications? A: The HDSP-F503 is specified as a Common Cathode configuration. Confirm that your existing circuit design accommodates this pin configuration. Both components share identical MSL ratings, eliminating moisture sensitivity handling changes.

Q: Is the HDSP-F503 available in the same packaging? A: Yes. Both components use 10-DIP (0.300", 7.62mm) packaging with identical physical dimensions of 0.508" H x 0.385" W x 0.250" D (12.90mm x 9.79mm x 6.36mm).

Q: What certifications does the substitute carry? A: The HDSP-F503 is ROHS3 Compliant and REACH Unaffected, meeting current environmental and regulatory requirements. Both components maintain MSL 1 (Unlimited) ratings.