Infineon Technologies PTFB191501FV1XWSA1

Overview

PTFB191501FV1XWSA1 from Infineon is a 150 W thermally enhanced LDMOS RF power transistor 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 PTFB191501FV1XWSA1 datasheet, PTFB191501FV1XWSA1 pinout, PTFB191501FV1XWSA1 application, or PTFB191501FV1XWSA1 equivalent, key selection criteria include broadband internal matching, –35 dBc two-carrier IMD at 1990 MHz, thermal resistance of 0.29 °C/W, gate voltage range of –6 to +10 V, and H-37248-2 earless flange package compatibility with high-power RF PCB layouts.

Technical Context

This device is a single-ended, enhancement-mode N-channel LDMOS FET optimized for 3G macrocell and microcell base station transmitters. Its architecture supports Doherty amplifier configurations via extended negative gate-source voltage range (down to –6 V), enabling precise peaking amplifier bias control while maintaining low HCI drift and stable gain across –40 to +150 °C storage temperature.

The transistor integrates input/output broadband matching networks and operates at 30 V drain supply with 1.2 A quiescent drain current. Its 65 V V(BR)DSS rating and capability to withstand 10:1 VSWR under 150 W CW output ensure robust operation in mismatched antenna environments typical of outdoor cellular infrastructure.

Key Specifications

Pinout & Package

PTFB191501FV1XWSA1 uses the H-37248-2 thermally enhanced earless flange package: single-ended, metal-ceramic construction with isolated source tab, designed for direct heatsink mounting and high-frequency grounding via case contact.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PTFB191501FV1XWSA1, the PTFB191501E offers identical RF performance but reduced thermal margin, while PD57018-E trades ruggedness and mounting simplicity for broader distributor availability-making PTFB191501FV1XWSA1 optimal for new designs prioritizing thermal reliability and mechanical robustness.

Availability

PTFB191501FV1XWSA1 is available at Aetrix Electronics and suitable for macrocell base station transmitters, microcell small cell PAs, Doherty peaking amplifiers, and CDMA2000 infrastructure requiring stable component supply and long-term lifecycle support.

Supply support for PTFB191501FV1XWSA1 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 solutions for wireless infrastructure.

PTFB191501FV1XWSA1 belongs to Infineon's Thermally Enhanced High Power RF LDMOS FET product line, engineered specifically for 3G/4G macro- and micro-base station final-stage amplifiers demanding ruggedness, linearity, and thermal stability.

FAQ

What is the maximum safe operating drain voltage for PTFB191501FV1XWSA1?

The absolute maximum drain-source voltage (V_DSS) is 65 V, but the device is characterized and qualified for continuous operation at 30 V drain supply. Exceeding 30 V risks accelerated hot-carrier degradation and violates the specified 150 W P–1dB output condition. Derating is required above 30 V, and gate-source voltage must remain within –6 V to +10 V limits to prevent oxide damage.

Does PTFB191501FV1XWSA1 require external ESD protection in PCB layout?

No external ESD protection is required for handling or assembly, as the device integrates HBM Class 2 (≥2 kV) protection on gate and drain terminals. However, PCB-level transient suppression remains recommended at system I/O interfaces, and proper grounding of the flange (drain) and source terminals is essential to maintain ESD path integrity during board-level surge events.

Can PTFB191501FV1XWSA1 be used in 2.1 GHz LTE applications?

While not characterized for LTE signals, its 1930–1990 MHz bandwidth and –35 dBc IMD at 1990 MHz suggest potential use in lower-band LTE (Band 1, 1920–1980 MHz) with careful validation. However, LTE's higher peak-to-average ratio (up to 10 dB) and wider channel bandwidths may exceed linear operating range; Infineon does not guarantee ACLR or EVM performance outside the documented WCDMA/CDMA test conditions.

What is the recommended gate bias network for Doherty peaking operation?

For Doherty peaking, use a dual-rail bias network providing –6 V to +1 V gate voltage with <100 ns switching speed. A low-noise, high-PSRR LDO (e.g., TPS7A47) referenced to source potential, combined with a series 10 Ω resistor and 100 pF bypass capacitor at the gate pad, ensures stable turn-on timing and minimizes gate ringing. Avoid shared bias paths between main and peaking amplifiers to prevent cross-talk.