STMicroelectronics PD55015S-E

Overview

PD55015S-E from STMicroelectronics is a common-source, N-channel enhancement-mode lateral MOSFET RF power transistor designed for broadband commercial and industrial amplification up to 1 GHz. It delivers 15 W output power with 14 dB gain at 500 MHz under 12.5 V supply and 150 mA quiescent drain current, housed in the JEDEC-approved PowerSO-10RF (straight lead) plastic SMD package. Its superior linearity and thermal stability make it ideal for car mobile radio final-stage amplifiers.

For engineers reviewing the PD55015S-E datasheet, PD55015S-E pinout, PD55015S-E application, or PD55015S-E equivalent, key selection criteria include its 15 W P1dB output capability, 1.2 °C/W junction-to-case thermal resistance, 40 V drain-source breakdown voltage, and compatibility with 500–915 MHz mobile radio bands requiring high-efficiency Class AB operation.

Technical Context

The PD55015S-E operates in common-source configuration with gate-controlled enhancement-mode conduction, optimized for RF power amplification in the 480–1500 MHz range. Its LDMOS structure provides high transconductance (2.5 mho typical), low input/output capacitance (CISS = 89 pF, COSS = 60 pF), and stable gain flatness across frequency bands.

It supports bias flexibility with VGS(Q) ranging from 2.0 to 5.0 V at ID = 150 mA and exhibits robust load mismatch tolerance (20:1 VSWR survivability at 500 MHz). The device is characterized at TCASE = 25°C and rated for continuous operation up to TJ = 165°C with RthJC = 1.2 °C/W.

Key Specifications

Pinout & Package

The PD55015S-E is packaged in PowerSO-10RF (straight lead), a JEDEC-qualified high-power SMD RF package with integrated thermal pad and optimized RF layout. It features three main terminals: Gate, Source, and Drain - with Source connected internally to the exposed thermal pad for low-inductance grounding and efficient heat transfer.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RF power amplifier applications.

Compared with PD55015-E and MRF372, the PD55015S-E uniquely balances SMD manufacturability, 15 W RF output, and automotive-grade thermal reliability in a single JEDEC-qualified package-making it optimal for space-constrained mobile radio designs where automated assembly and thermal performance are co-prioritized.

Availability

PD55015S-E is available at Aetrix Electronics and suitable for car mobile radios, UHF land-mobile transmitters, cellular repeaters, and ISM-band test equipment requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for PD55015S-E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in analog, power, and RF solutions for automotive, industrial, and communications markets.

The PD55015S-E belongs to ST's LdmoST plastic family of RF power transistors, engineered specifically for high-gain, broadband amplification in cost-sensitive, high-volume mobile radio applications demanding SMD compatibility and thermal robustness.

FAQ

What is the maximum recommended drain voltage for continuous operation?

The absolute maximum drain-source voltage (V(BR)DSS) is 40 V, but for reliable continuous operation, ST specifies 12.5 V DC supply in the primary application conditions. Operation above 15 V requires derating based on thermal limits and must respect the 73 W power dissipation ceiling at TCASE = 70°C.

Does PD55015S-E require external gate protection diodes?

No external gate protection diodes are required under normal bias conditions. The device has ±20 V gate-source voltage rating and built-in gate oxide robustness; however, RF input matching networks should include DC blocking capacitors and transient suppression if exposed to antenna-coupled surges in mobile environments.

How does the straight-lead PowerSO-10RF differ electrically from the formed-lead version?

Electrically, PD55015S-E and PD55015-E share identical die characteristics, S-parameters, and RF performance. The only difference is mechanical: straight leads enable standard pick-and-place placement and reflow, while formed leads require specialized tooling and may introduce minor parasitic inductance differences in ultra-high-frequency layouts above 1 GHz.

Can PD55015S-E operate efficiently at 900 MHz?

Yes - at 900 MHz, the PD55015S-E delivers 12.5 W P1dB with 11 dB gain and 45% drain efficiency (per Figure 25–27), meeting requirements for GSM/EDGE repeater and base station booster applications. Matching network optimization per Table 7 (ZIN/ZDL data) is essential to maintain return loss < –10 dB.