Infineon Technologies PTFB191501EV1XWSA1

Overview

PTFB191501EV1XWSA1 from Infineon is a thermally-enhanced 150 W LDMOS RF power transistor designed for single- and two-carrier WCDMA/CDMA base station final-stage amplifiers operating at 1930–1990 MHz. It delivers 35 W average output power, 18 dB linear gain, and 30% drain efficiency under 3GPP WCDMA conditions (30 V, 1.2 A, PAR = 8 dB), with integrated ESD protection (HBM Class 2) and 10:1 VSWR ruggedness.

For engineers reviewing the PTFB191501EV1XWSA1 datasheet, PTFB191501EV1XWSA1 pinout, PTFB191501EV1XWSA1 application, or PTFB191501EV1XWSA1 equivalent, this device is selected for high-reliability macrocell PA designs requiring broadband internal matching, low HCI drift, and operation up to 200°C junction temperature in thermally constrained RF front-ends.

Technical Context

This LDMOS FET operates as a grounded-gate, common-source RF power amplifier stage with fixed bias (V_GS = 2.4–3.4 V at I_DQ = 1.2 A) and optimized gate-drain capacitance for broadband 3GPP signal handling. Its H-36248-2 package features a slotted flange for enhanced thermal dissipation (R_θJC = 0.29 °C/W) and RoHS-compliant Pb-free construction.

The device supports Doherty architecture via extended negative gate-source voltage range and withstands 65 V drain-source breakdown. It achieves –35 dBc intermodulation distortion at 35 W average output and maintains stable gain (17–18 dB) across 1930–1990 MHz in two-tone tests at 150 W PEP.

Key Specifications

Pinout & Package

PTFB191501EV1XWSA1 uses the H-36248-2 thermally-enhanced slotted-flange package: ceramic/metal hybrid, single-ended, flange-mounted with solderable source terminals and isolated gate/drain leads. Flange is electrically connected to source.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PTFB191501FV1XWSA1, the slotted flange offers superior thermal contact area; compared with PD85015-E, PTFB191501EV1XWSA1 provides 1.5 dB higher gain, 3 dB better IMD, and built-in HBM Class 2 ESD-reducing system-level validation effort for telecom infrastructure.

Availability

PTFB191501EV1XWSA1 is available at Aetrix Electronics and suitable for macrocell base station PAs, Doherty amplifier peaking stages, WCDMA repeaters, and CDMA2000 final-stage amplifiers requiring stable component supply and long-term lifecycle support.

Supply support for PTFB191501EV1XWSA1 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 high-reliability RF power transistors for wireless infrastructure.

This device belongs to Infineon's Thermally Enhanced LDMOS RF Power Transistor product line, engineered specifically for macrocell and microcell base station amplifiers demanding high efficiency, ruggedness, and long-term reliability in outdoor telecom environments.

FAQ

What is the maximum continuous drain current rating for PTFB191501EV1XWSA1?

The device does not specify a maximum continuous drain current (I_D) rating independent of thermal conditions. Instead, it defines safe operating area by junction temperature (T_J ≤ 200°C), case temperature (T_C ≤ 70°C), and thermal resistance (R_θJC = 0.29 °C/W). At 30 V V_DD, typical I_DQ is 1.2 A; pulsed operation allows peak I_D up to ~12 A depending on duty cycle and heatsinking.

Can PTFB191501EV1XWSA1 be used in GaN-replacement designs?

No-it is an LDMOS device with inherent material limitations: lower electron mobility and higher gate charge than GaN. While it matches GaN in 150 W CW output at 1990 MHz, its 18 dB gain and 30% WCDMA efficiency fall short of modern GaN PAs (typically >22 dB gain, >38% efficiency). It is not a drop-in GaN replacement due to differing bias requirements, thermal profiles, and stability networks.

Is the H-36248-2 package lead-free and RoHS-compliant?

Yes-the datasheet explicitly states "Pb-free, RoHS-compliant" for both PTFB191501E and PTFB191501F variants. The H-36248-2 package uses lead-free solderable terminations and complies with EU Directive 2011/65/EU, including exemption 7a for high-melting-temperature solders in power devices.

Does PTFB191501EV1XWSA1 require external gate protection beyond the integrated ESD diodes?

Yes-integrated HBM Class 2 ESD protection guards against handling discharge but does not protect against RF-induced gate voltage transients or DC overvoltage. External gate protection (e.g., series resistor + Zener clamp to source) is required per Infineon's application notes to prevent gate oxide damage during hot insertion, load mismatch, or lightning-induced surges in outdoor installations.