PD57018 RF MOSFET LDMOS Equivalent & Substitute Parts

Part Overview

The PD57018 is an RF MOSFET LDMOS transistor manufactured by STMicroelectronics, designed for RF power amplification applications at 945MHz. This device operates at 28V test voltage with 18W output power and 16.5dB gain in a PowerSO-10 package with exposed bottom pad. The PD57018 is classified as obsolete, making identification of active equivalent parts essential for ongoing production and design continuity. Substitute parts must maintain identical electrical performance characteristics and package compatibility to ensure direct replacement capability.

Substiute Parts

PD57018

STMicroelectronicsIn Stock: 2178PD57018 Datasheet

Current PartRFQ

PD57018-E

STMicroelectronicsIn Stock: 2447PD57018-E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete PD57018 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must satisfy the following criteria:

Electrical Parameters (Must Match Exactly):

• Technology: LDMOS
• Frequency: 945MHz
• Voltage - Test: 28V
• Voltage - Rated: 65V
• Current Rating: 2.5A
• Current - Test: 100mA
• Power - Output: 18W
• Gain: 16.5dB

Mechanical Parameters (Must Match Exactly):

• Package / Case: PowerSO-10 Exposed Bottom Pad
• Supplier Device Package: 10-PowerSO

Compliance Parameters (Must Match Exactly):

• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 3 (168 Hours)

The substitute part PD57018-E maintains identical electrical and mechanical specifications while offering active product status, enabling continued component availability for production applications.

Parameter Comparison

Engineering Selection Recommendations

The PD57018-E is the direct active equivalent for the obsolete PD57018. Selection of PD57018-E is based on the following engineering criteria:

Product Status: PD57018-E maintains active product status with STMicroelectronics, ensuring continued availability and supply chain reliability. The original PD57018 is obsolete and no longer manufactured.

Electrical Equivalence: All electrical parameters are identical between the two parts, including frequency response (945MHz), output power (18W), gain (16.5dB), voltage ratings (28V test, 65V rated), and current specifications (2.5A rating, 100mA test).

Package Compatibility: Both parts utilize the PowerSO-10 package with exposed bottom pad, ensuring mechanical and thermal compatibility in existing PCB designs without layout modifications.

Compliance Alignment: PD57018-E maintains identical RoHS3 compliance, moisture sensitivity level (MSL 3), REACH status, ECCN classification, and HTSUS code, eliminating regulatory or supply chain complications.

Direct Substitution: PD57018-E is a pin-for-pin and functionally equivalent replacement requiring no circuit design changes or performance trade-offs.

Frequently Asked Questions (FAQ)

Q: Can PD57018-E be used as a direct replacement for PD57018 in existing designs?

A: Yes. PD57018-E is electrically and mechanically identical to PD57018 across all specified parameters. No circuit modifications, PCB layout changes, or performance adjustments are required for direct substitution.

Q: What is the primary reason for substituting PD57018 with PD57018-E?

A: PD57018 is classified as obsolete and no longer manufactured by STMicroelectronics. PD57018-E is the active equivalent part, ensuring continued component availability for production and maintenance applications.

Q: Are there any differences in packaging between PD57018 and PD57018-E?

A: Both parts use the PowerSO-10 package with exposed bottom pad. The primary packaging difference is that PD57018-E is supplied in tube packaging, while PD57018 packaging specification was not provided. This does not affect electrical or mechanical compatibility.

Q: Do PD57018 and PD57018-E have identical compliance certifications?

A: Yes. Both parts are ROHS3 compliant, carry MSL 3 (168 Hours) moisture sensitivity rating, are REACH unaffected, and share identical ECCN (EAR99) and HTSUS (8541.29.0095) classifications.

Q: What are the critical electrical parameters that define substitution eligibility for this RF MOSFET?

A: Substitution eligibility is determined by exact matching of frequency (945MHz), output power (18W), gain (16.5dB), test voltage (28V), rated voltage (65V), current rating (2.5A), and test current (100mA). All parameters must match precisely for functional equivalence.

Q: Is PD57018-E suitable for 945MHz RF power amplification applications?

A: Yes. PD57018-E is specified for 945MHz operation with 18W output power and 16.5dB gain, making it suitable for RF power amplification applications within these performance parameters.

Q: What is the moisture sensitivity level for PD57018-E, and what does it mean for handling?

A: PD57018-E carries MSL 3 (168 Hours) rating, indicating the component can be exposed to ambient conditions (23°C, 50% relative humidity) for up to 168 hours before soldering without requiring baking. Proper moisture control procedures must be followed during storage and assembly.