PD85015-E RF MOSFET LDMOS Equivalent & Substitute Parts

Part Overview

The PD85015-E is an RF MOSFET LDMOS device manufactured by STMicroelectronics, designed for RF power amplification applications at 870MHz with 15W output power and 16dB gain. The device is packaged in PowerSO-10RF with formed leads and exposed bottom pad. This part is classified as obsolete, necessitating identification of active equivalent alternatives for new designs and ongoing production requirements.

Substiute Parts

PD85015-E

STMicroelectronicsIn Stock: 1075PD85015-E Datasheet

Current PartRFQ

PD55015-E

STMicroelectronicsIn Stock: 1452PD55015-E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PD85015-E is determined by the following critical parameters that must remain compatible:

Package Compatibility: Both the main part and substitute must use PowerSO-10RF Exposed Bottom Pad (2 Formed Leads) packaging to ensure mechanical and thermal interface compatibility.

Technology Platform: LDMOS technology is required to maintain electrical performance characteristics and thermal behavior.

Electrical Ratings: Voltage-rated specification (40V) and current rating (5A) establish the absolute maximum operating envelope. Substitute parts must meet or exceed these ratings.

Output Power: 15W output power capability is a core functional requirement.

Compliance Standards: RoHS3 compliance and REACH unaffected status must be maintained for regulatory and supply chain continuity.

The PD55015-E qualifies as a direct substitute based on identical package type, matching LDMOS technology, equivalent electrical ratings, and identical output power specification. Frequency and gain parameters differ between the main part and substitute, reflecting application-specific tuning rather than fundamental incompatibility.

Parameter Comparison

Engineering Selection Recommendations

The PD55015-E is the manufacturer-recommended substitute for the obsolete PD85015-E. Both devices share identical package specifications, electrical ratings, and compliance certifications, ensuring direct compatibility in existing designs.

The PD55015-E carries active product status, providing assured long-term availability and supply chain continuity compared to the obsolete PD85015-E. Both parts maintain ROHS3 compliance and identical moisture sensitivity levels, eliminating compliance or handling procedure changes.

The frequency difference (500MHz versus 870MHz) and gain difference (14dB versus 16dB) reflect frequency-band optimization rather than fundamental performance degradation. Selection between these parts depends on the target RF frequency band of the application circuit. For 870MHz applications, the PD85015-E specifications are optimized; for 500MHz applications, the PD55015-E is optimized. Electrical ratings, output power, and package compatibility remain equivalent across both devices.

Frequently Asked Questions (FAQ)

Q: Can the PD55015-E directly replace the PD85015-E in existing PCB designs?

A: Yes. Both devices use identical PowerSO-10RF packaging with formed leads and exposed bottom pad. PCB footprints, thermal interface requirements, and lead configurations are identical. No PCB redesign is required.

Q: What is the primary difference between these two parts?

A: The PD55015-E operates at 500MHz with 14dB gain, while the PD85015-E operates at 870MHz with 16dB gain. Both deliver 15W output power. The frequency and gain differences reflect optimization for different RF bands. Electrical ratings (40V rated, 5A current, 15W output) are identical.

Q: Why is the PD85015-E obsolete?

A: The PD85015-E is classified as obsolete by the manufacturer. The PD55015-E is the active equivalent, ensuring continued availability and supply chain support.

Q: Are compliance certifications identical between these parts?

A: Yes. Both the PD85015-E and PD55015-E are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 3, 168 hours). No compliance changes occur during substitution.

Q: What is the moisture sensitivity level, and does it affect handling?

A: Both parts carry MSL 3 (168 hours), indicating the device can remain at room temperature for up to 168 hours after moisture exposure before soldering. Standard ESD and moisture control procedures apply to both parts identically.

Q: Are there any electrical parameter differences that affect circuit design?

A: Test voltage differs slightly (13.6V for PD85015-E versus 12.5V for PD55015-E), but both devices are rated to 40V maximum. Gain differs by 2dB (16dB versus 14dB), which is application-dependent. Output power and current ratings are identical. Circuit design changes depend on the specific RF frequency band and gain requirements of the application.

Q: What packaging format is used for the PD55015-E?

A: The PD55015-E is supplied in tube packaging. The PD85015-E packaging format is not specified in the provided data. Confirm packaging requirements with your procurement process.