STMicroelectronics PD57030S-E

Overview

PD57030S-E from STMicroelectronics is an N-channel enhancement-mode lateral MOSFET RF power transistor in PowerSO-10RF straight-lead package, designed for common-source broadband amplification at 28 V up to 1 GHz. It delivers 30 W output power with 14 dB gain and 53% drain efficiency at 945 MHz, optimized for base station infrastructure requiring high linearity and thermal stability.

For engineers reviewing the PD57030S-E datasheet, PD57030S-E pinout, PD57030S-E application, or PD57030S-E equivalent, this device is selected for RF final-stage amplifiers where POUT, gain flatness across 925–960 MHz, load mismatch tolerance (10:1 VSWR), and junction-to-case thermal resistance (1.8 °C/W) are critical design constraints.

Technical Context

This LDMOS transistor operates in common-source configuration with gate threshold voltage of 2.0–5.0 V and transconductance of 1.8 mho at 10 V V_DS/3 A I_D. Its input impedance (0.809 – j0.085 Ω at 945 MHz) and output impedance (2.46 + j0.492 Ω) are tuned for broadband matching in cellular infrastructure bands.

Designed for 28 V DC bias with 50 mA quiescent drain current, it supports dynamic operation under 10:1 VSWR load mismatch without degradation. The PowerSO-10RF package enables surface-mount assembly while maintaining low R_thJC (1.8 °C/W) and JEDEC-compliant reliability (MSL 3).

Key Specifications

Pinout & Package

PD57030S-E uses the PowerSO-10RF straight-lead plastic package - ST's first JEDEC-approved high-power SMD RF package, featuring formed leads optimized for reflow soldering and thermal conduction via exposed drain pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PD57018S-E, PD57030S-E provides +12 W output headroom at identical bias and frequency; versus MRF6V2300NBR1, it trades raw power for SMT manufacturability, lower system BOM count, and integrated thermal path - making it optimal for mid-power, space-constrained base station modules.

Availability

PD57030S-E is available at Aetrix Electronics and suitable for macrocell base station PA, public safety radio amplifier, ISM band industrial heater driver, and fixed wireless access transmitter applications requiring stable component supply across extended production lifecycles.

Supply support for PD57030S-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 power management, analog, MEMS, and RF solutions for industrial, automotive, and communications markets.

PD57030S-E belongs to ST's LdmoST plastic family of RF power transistors, engineered specifically for broadband cellular infrastructure amplifiers demanding high gain, linearity, and ruggedness in surface-mount form factor.

FAQ

What is the recommended gate bias voltage range for PD57030S-E in Class AB operation?

The gate-source voltage for 50 mA quiescent drain current is specified between 2.0 V and 5.0 V at V_DS = 28 V. For stable Class AB operation, a typical bias point is 3.2–3.8 V using a resistive divider or active current source, verified by measuring I_DQ on evaluation boards per AN1294.

Does PD57030S-E require external gate protection diodes?

No - the device integrates gate protection via internal Zener clamping (V_GS = ±20 V absolute maximum). External gate resistors (10–47 Ω) are recommended for stability, but TVS or Schottky diodes are unnecessary unless operating in high-ESD environments exceeding IEC 61000-4-2 Level 4.

Can PD57030S-E be used at frequencies outside the 925–960 MHz band?

Yes - its gain and efficiency remain usable from 800 MHz to 1 GHz, with measured POUT ≥25 W and GP ≥12 dB at 835 MHz and 990 MHz. Performance degrades above 1 GHz due to parasitic capacitance; operation beyond 1.1 GHz is not characterized or guaranteed.

What thermal interface material is recommended between PD57030S-E and heatsink?

A 0.1 mm thick thermally conductive silicone pad (e.g., Laird Tflex 300, 3 W/m·K) or non-silicone grease (e.g., Wakefield-Vette MX-4) is recommended. Avoid epoxy-based pastes - they impede thermal cycling reliability. Mounting pressure must be 25–40 psi to ensure uniform contact across the exposed drain pad per PowerSO-10RF mechanical spec.