STMicroelectronics PD54008

Overview

PD54008 from STMicroelectronics is a common-source N-channel enhancement-mode lateral MOSFET RF power transistor designed for broadband commercial and industrial applications up to 1 GHz. It delivers 8 W output power with 11.5 dB gain at 500 MHz under 7.5 V supply and 150 mA quiescent drain current, featuring excellent thermal stability and linearity optimized for portable radio transmitters.

For engineers reviewing the PD54008 datasheet, PD54008 pinout, PD54008 application, or PD54008 equivalent, key selection considerations include its PowerSO-10RF SMD package, 25 V drain-source breakdown voltage, 1.2 °C/W junction-to-case thermal resistance, and verified S-parameter performance across 50–1500 MHz under multiple bias conditions.

Technical Context

The PD54008 operates in common-source configuration with gate-controlled lateral conduction, leveraging ST's LDMOS technology for high gain and linearity. Its input impedance (e.g., 1.73 + j0.96 Ω at 500 MHz) and drain load impedance (1.48 − j1.62 Ω at same frequency) are optimized for broadband matching networks in 50 Ω systems.

It supports three standard bias points-IDQ = 150 mA, 800 mA, and 1.5 A-with corresponding trade-offs in P1dB (8 W), gain (11.5 dB), and efficiency (55 %). Load mismatch tolerance up to 20:1 VSWR enables robust operation in real-world antenna environments.

Key Specifications

Pinout & Package

PD54008 is housed in the PowerSO-10RF plastic SMD package (JEDEC-approved), available in formed-lead (gull-wing) and straight-lead variants. The package features integrated thermal pad for direct PCB copper pour attachment and optimized RF layout geometry including controlled-impedance microstrip transitions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MRF158, PD54008 offers superior gain and efficiency in SMD form; compared with PD57008, it trades 4 W output and 5 % efficiency for mature qualification and cost-sensitive production.

Availability

PD54008 is available at Aetrix Electronics and suitable for portable radio transmitters, land-mobile radio base stations, ISM band industrial heaters, and amateur radio amplifier modules requiring stable component supply across long-lifecycle programs.

Supply support for PD54008 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 automotive, industrial, and power discrete technologies with over 40 years of RF component innovation.

PD54008 belongs to ST's LdmoST family of lateral DMOS RF power transistors, engineered specifically for high-efficiency, broadband amplification in portable and infrastructure wireless equipment.

FAQ

What is the maximum recommended drain voltage for continuous operation?

The absolute maximum drain-source voltage is 25 V, but ST specifies 7.5 V DC supply for rated 8 W RF output at 500 MHz. Operation above 9.5 V is permitted only for short-duration test conditions (e.g., load mismatch evaluation), not for sustained duty-cycle use.

Does PD54008 require external gate protection diodes?

No. The device integrates internal gate protection structures compliant with ESD Class 1B (≥2 kV HBM). External TVS diodes are unnecessary unless operating in high-static industrial environments exceeding IEC 61000-4-2 Level 4.

Can PD54008 be used in Class C amplifier configurations?

Yes - its lateral MOSFET structure supports Class C operation, but gain compression and harmonic content must be measured empirically. ST characterizes it in Class AB (IDQ = 150/800/1500 mA); Class C biasing requires custom thermal derating due to increased peak junction temperature.

Is the PowerSO-10RF package lead-free compatible?

Yes. PowerSO-10RF meets RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3. Reflow profile follows IPC/JEDEC J-STD-020D with peak temperature ≤ 260 °C and time above liquidus ≤ 60 seconds.