PD57070S RF MOSFET LDMOS Equivalent & Substitute Parts

Part Overview

The PD57070S is an RF MOSFET LDMOS transistor manufactured by STMicroelectronics, designed for RF power amplification applications operating at 945MHz. This device delivers 70W output power with 14.7dB gain at 28V test voltage, housed in a PowerSO-10 package with exposed bottom pad. The PD57070S is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure long-term component availability for production and field service applications.

Substiute Parts

PD57070S

STMicroelectronicsIn Stock: 882PD57070S Datasheet

Current PartRFQ

PD57070S-E

STMicroelectronicsIn Stock: 754PD57070S-E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete PD57070S is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications for RF performance, power handling, voltage ratings, and package configuration to ensure direct replacement without circuit redesign or performance degradation.

The following parameters establish substitution validity:

• Operating frequency: 945MHz
• Output power: 70W
• Gain: 14.7dB
• Test voltage: 28V
• Rated voltage: 65V
• Current rating: 7A
• Test current: 250mA
• Package type: PowerSO-10 with exposed bottom pad
• Technology: LDMOS
• Compliance certifications: ROHS3, REACH Unaffected, EAR99

Parameter Comparison

Engineering Selection Recommendations

The PD57070S-E is the direct active equivalent for the obsolete PD57070S. Both parts share identical electrical specifications, power ratings, frequency response, and gain characteristics. The PD57070S-E maintains full compliance with ROHS3 and REACH requirements, ensuring regulatory alignment for current manufacturing and field deployment.

The transition from PD57070S to PD57070S-E is supported by equivalent package geometry (PowerSO-10 with exposed bottom pad) and identical moisture sensitivity classification. The supplier device package designation change from 10-PowerSO to PowerSO-10RF (Straight Lead) reflects manufacturing process updates while preserving mechanical and electrical compatibility.

Selection of the PD57070S-E eliminates obsolescence risk and provides access to active inventory. The part is currently available in production quantities, supporting both new design implementation and replacement stock requirements.

Frequently Asked Questions (FAQ)

Q: Can the PD57070S-E directly replace the PD57070S without circuit modification?

A: Yes. The PD57070S-E maintains identical electrical specifications, power output, frequency response, gain, voltage ratings, and current ratings. The PowerSO-10 package geometry and exposed bottom pad configuration are equivalent, enabling direct PCB-level substitution.

Q: What is the difference between the 10-PowerSO and PowerSO-10RF package designations?

A: Both designations refer to the same physical package type: PowerSO-10 with exposed bottom pad. The designation change reflects STMicroelectronics manufacturing process updates. The PowerSO-10RF (Straight Lead) variant maintains identical pin configuration, pitch, and thermal characteristics required for direct substitution.

Q: Are there compliance or certification differences between the two parts?

A: No. Both the PD57070S and PD57070S-E carry identical ROHS3 compliance, REACH Unaffected status, and EAR99 export classification. Moisture sensitivity level (MSL 3, 168 Hours) is identical, requiring equivalent handling and storage protocols.

Q: Why is the PD57070S classified as obsolete?

A: The PD57070S has been superseded by the PD57070S-E in STMicroelectronics' active product portfolio. The PD57070S-E provides equivalent performance with active manufacturing support and guaranteed long-term availability.

Q: What inventory status should be considered when selecting between these parts?

A: The PD57070S-E is the recommended selection for all new designs and ongoing production. Current inventory of PD57070S-E (695 Pcs) supports immediate procurement. The PD57070S (791 Pcs) remains available but should not be specified for new applications due to obsolete status.

Q: Are thermal characteristics and power dissipation identical between the two parts?

A: Both parts deliver 70W output power at 945MHz with identical voltage and current ratings. The exposed bottom pad in both PowerSO-10 packages provides equivalent thermal performance for heat dissipation and junction temperature management.