Infineon Technologies PTFA212401E V4 R250

Overview

PTFA212401E V4 R250 from Infineon is a thermally-enhanced 240 W LDMOS RF power transistor designed for single- and two-carrier WCDMA base station power amplifiers in the 2110–2170 MHz band. It delivers 49 dBm average output power (single-carrier), 15.8 dB linear gain, 34% drain efficiency at 30 V, and –33 dBc adjacent channel power ratio under 3GPP signal conditions with PAR = 8.5 dB.

For engineers reviewing the PTFA212401E datasheet, PTFA212401E pinout, PTFA212401E application, or PTFA212401E equivalent, this device is selected for high-efficiency, broadband RF PA stages requiring robust VSWR tolerance (5:1 @ 240 W CW), integrated ESD protection (HBM Class 2), and stable thermal performance up to 200°C junction temperature.

Technical Context

The PTFA212401E operates as a common-source RF power amplifier stage with gate bias controlled via external resistive network (V_GS = 2.0–3.0 V at I_DQ = 1.6 A). Its internal broadband matching enables operation across 2050–2200 MHz without external tuning networks, while the H-36260-2 slotted-flange package provides 0.23 °C/W junction-to-case thermal resistance at 50 W average WCDMA load.

It supports both continuous-wave and modulated signal operation, with verified two-tone IMD of –28 dBc and three-carrier WCDMA ACPR of –40 dBc. The device sustains 5:1 VSWR under full 240 W CW output, indicating high ruggedness for mismatched antenna environments typical in macrocell infrastructure.

Key Specifications

Pinout & Package

PTFA212401E is housed in the H-36260-2 thermally-enhanced slotted-flange package - a metal-ceramic hybrid with isolated source terminal, flanged base for direct heatsink attachment, and optimized thermal path from die to case. The flange contains mounting slots for mechanical stability and thermal uniformity in high-power RF modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PTFA212401F, the PTFA212401E offers identical RF performance but enables more rigid mechanical mounting via slotted flange; versus PD57018-E, it trades 20 W output headroom for superior ruggedness and thermal margin in macrocell deployments.

Availability

PTFA212401E V4 R250 is available at Aetrix Electronics and suitable for macrocell base stations, WCDMA Band I transmitters, and outdoor small cell boosters requiring stable component supply across extended product lifecycles.

Supply support for PTFA212401E V4 R250 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

Infineon Technologies is a German semiconductor manufacturer specializing in power management, RF, and automotive ICs, with leadership in silicon-based RF power solutions for wireless infrastructure.

The PTFA series belongs to Infineon's high-power LDMOS transistor product line, engineered specifically for 3G/4G macrocell and remote radio head applications demanding high efficiency, broadband matching, and field-proven ruggedness.

FAQ

What is the recommended gate bias network for PTFA212401E?

The datasheet specifies V_GS = 2.5 V typical at I_DQ = 1.6 A. A two-resistor divider (e.g., R1 = 1.2 kΩ, R2 = 1.3 kΩ from +30 V) with bypass capacitor yields stable bias. Gate current is <1 µA, so resistor power rating is non-critical. Layout must minimize parasitic inductance and include 0.1 µF local decoupling.

Can PTFA212401E operate outside the 2110–2170 MHz band?

Yes - broadband matching supports 2050–2200 MHz with ≤0.5 dB gain variation. Performance degrades below 2050 MHz (gain drop >1 dB) and above 2200 MHz (efficiency loss >5%). For 1920–1980 MHz (Band II), external matching is required per application note AN2012-07.

What thermal interface material is recommended for the H-36260-2 flange?

Infineon recommends thermally conductive grease (e.g., Dow Corning TC-5122) or phase-change pad (e.g., Laird T-Pol 300) with 0.05–0.10 mm bondline thickness. Mounting torque must be 1.2–1.5 N·m per screw to ensure uniform pressure and avoid flange warping that increases R_θJC.

Does PTFA212401E require external ESD protection on the gate?

No - it integrates HBM Class 2 (≥2 kV) ESD protection. However, layout best practices still apply: keep gate traces short (<3 mm), avoid vias near the pin, and place a 0.3 pF chip capacitor (e.g., AVX 08051J0R3BBTTR) directly at the gate pad to suppress RF-induced transients above 1 GHz.