PD54003L-E RF MOSFET LDMOS Equivalent & Substitute Parts

Part Overview

The PD54003L-E is an RF MOSFET LDMOS device manufactured by STMicroelectronics, designed for RF power amplification applications operating at 500MHz. This component features a 7.5V test voltage rating, 3W output power capability, and 20dB gain in a PowerFLAT™ (5x5) package configuration. The device is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across critical RF parameters while meeting current manufacturing and compliance standards.

Substiute Parts

PD54003L-E

STMicroelectronicsIn Stock: 4074PD54003L-E Datasheet

Current PartRFQ

PD54008L-E

STMicroelectronicsIn Stock: 22010PD54008L-E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PD54003L-E is determined by strict alignment across the following critical parameters:

Mandatory Compatibility Criteria:

• Manufacturer: STMicroelectronics (same manufacturer ensures design continuity)
• Technology: LDMOS (RF power amplification architecture)
• Package / Case: 8-PowerVDFN (physical and thermal interface compatibility)
• Supplier Device Package: PowerFLAT™ (5x5) (identical footprint and thermal characteristics)
• Frequency: 500MHz (RF operating band)
• Voltage - Test: 7.5V (bias and signal integrity)
• Voltage - Rated: 25V (maximum voltage stress rating)
• RoHS Status: ROHS3 Compliant (regulatory compliance)
• Moisture Sensitivity Level: 3 (168 Hours) (handling and storage requirements)
• REACH Status: REACH Unaffected (environmental compliance)

Allowable Parameter Variations: Substitute parts may exhibit differences in current rating, test current, output power, and gain, provided the substitute maintains or exceeds the performance envelope of the original part or is suitable for the intended application circuit topology.

Parameter Comparison

Engineering Selection Recommendations

The PD54008L-E qualifies as a direct substitute for the obsolete PD54003L-E based on the following engineering criteria:

Compliance and Regulatory Status: Both devices maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity in manufacturing and deployment. The PD54008L-E carries active product status, providing long-term availability and supply chain stability compared to the obsolete PD54003L-E.

Physical and Thermal Compatibility: Identical package configuration (8-PowerVDFN PowerFLAT™ 5x5) ensures direct PCB footprint compatibility and equivalent thermal dissipation characteristics, eliminating the need for layout redesign.

Electrical Operating Point Alignment: Both devices operate at identical test voltage (7.5V), rated voltage (25V), and frequency (500MHz), maintaining signal integrity and bias network compatibility within existing circuit topologies.

Performance Envelope: The PD54008L-E demonstrates enhanced output power capability (8W versus 3W) and increased current rating (5A versus 4A), providing superior performance margins. The gain differential (15dB versus 20dB) reflects design optimization for higher power output and does not preclude functional substitution in applications where the original 3W specification is the limiting requirement.

Moisture Sensitivity and Handling: Identical MSL rating (3, 168 Hours) ensures equivalent handling, storage, and reflow process requirements, eliminating process qualification changes.

Frequently Asked Questions (FAQ)

Q: Can the PD54008L-E be used as a direct replacement for the PD54003L-E in existing designs?

A: The PD54008L-E is electrically and mechanically compatible with the PD54003L-E. Both devices share identical package geometry (8-PowerVDFN PowerFLAT™ 5x5), test voltage (7.5V), rated voltage (25V), and operating frequency (500MHz). Circuit validation is required to confirm that the enhanced power output (8W) and increased current rating (5A) do not introduce thermal or impedance matching issues specific to the application.

Q: What are the key differences between PD54003L-E and PD54008L-E?

A: The primary differences are output power (3W versus 8W), current rating (4A versus 5A), test current (50mA versus 200mA), and gain (20dB versus 15dB). The PD54008L-E is an active product, while the PD54003L-E is obsolete. All other electrical and mechanical parameters remain identical.

Q: Are there any package or footprint changes between these devices?

A: No. Both devices use the 8-PowerVDFN package with PowerFLAT™ (5x5) configuration. PCB layout and thermal management design remain unchanged.

Q: What is the product status difference, and why does it matter?

A: The PD54003L-E is classified as obsolete, indicating discontinued manufacturing and limited availability. The PD54008L-E is active, ensuring ongoing production, supply chain availability, and manufacturer support. For new designs and long-term production, the active PD54008L-E is the appropriate selection.

Q: Do both devices have the same compliance certifications?

A: Yes. Both the PD54003L-E and PD54008L-E are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 3, 168 Hours). No compliance qualification changes are required for substitution.

Q: How does the gain difference (20dB versus 15dB) affect circuit performance?

A: Gain is a function of device design optimization for the intended power output level. The PD54008L-E's lower gain reflects its design for higher power delivery. Circuit impedance matching and bias networks must be evaluated to ensure the gain characteristic aligns with the application's amplifier stage requirements.

Q: Is thermal management affected by the higher power output of the PD54008L-E?

A: Both devices share identical package geometry and thermal interface characteristics. However, the PD54008L-E's higher output power (8W) generates increased junction temperature under equivalent operating conditions. Thermal design review is required to confirm that existing heat dissipation provisions (PCB copper area, thermal vias, heatsinking) remain adequate.