Diodes Incorporated ZUMTS17NTA

Overview

ZUMTS17NTA from Diodes Incorporated is an NPN RF transistor in SOT323 package, rated for 11 V V_CEO, 50 mA I_C, and 3.2 GHz f_T, designed for high-frequency switching in cellular front-end modules, antenna tuning circuits, and LTE/WCDMA RF switches.

For engineers reviewing the ZUMTS17NTA datasheet, ZUMTS17NTA pinout, ZUMTS17NTA application, or ZUMTS17NTA equivalent, key selection criteria include transition frequency (f_T), collector-emitter saturation voltage (V_CE(SAT)), unity-gain bandwidth, ESD robustness (2 kV HBM), and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This NPN RF transistor operates as a high-speed switching element in RF signal path control, leveraging its 3.2 GHz typical f_T and low 0.8–1.5 pF C_ob to minimize insertion loss and maintain impedance integrity up to 2.7 GHz. Its 11 V V_CEO rating supports operation in multi-band cellular power amplifier output stages.

The device features a fully lead-free, halogen- and antimony-free "Green" construction qualified to AEC-Q101, with thermal resistance R_θJA of 403 °C/W on minimum pad layout-enabling stable performance in compact, thermally constrained RF modules.

Key Specifications

Pinout & Package

Package: SOT323 - ultra-compact surface-mount plastic package (2.10 × 1.30 × 0.90 mm), UL 94V-0 rated, moisture sensitivity level 1, suitable for high-density RF PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSVT112MUTBG and MMDT2222ALT1G, ZUMTS17NTA uniquely delivers 3.2 GHz f_T with AEC-Q101 qualification and SOT323 footprint-making it the only option validated for automotive-grade, multi-band cellular RF switching where bandwidth, reliability, and size are jointly constrained.

Availability

ZUMTS17NTA is available at Aetrix Electronics and suitable for cellular front-end modules, automotive telematics systems, and Wi-Fi 6E diversity switching requiring stable component supply, consistent parametric performance, and full traceability.

Supply support for ZUMTS17NTA 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-performance, high-reliability components for automotive, industrial, and consumer markets.

ZUMTS17NTA belongs to Diodes' RF transistor product line, engineered specifically for high-frequency signal path control in space-constrained wireless infrastructure and mobile devices.

FAQ

What is the maximum operating frequency for reliable switching performance?

ZUMTS17NTA achieves 3.2 GHz typical transition frequency (f_T) under pulsed conditions (V_CE = 5 V, I_E = 25 mA, f = 500 MHz). For stable switching with >20 dB isolation, it is validated up to 2.7 GHz in common-emitter configuration per Diodes' application note AN-108. Performance degrades above 3.0 GHz due to decreasing gain margin.

Is ZUMTS17NTA suitable for automotive applications?

Yes-ZUMTS17NTA is explicitly qualified to AEC-Q101 Rev D standards, including temperature cycling, high-temperature operating life, and ESD testing. It operates continuously from -55°C to +150°C junction temperature and is used in production automotive telematics modules certified to ISO/TS 16949.

How does the SOT323 package affect thermal performance in RF designs?

In a standard FR4 PCB with minimum recommended pad layout, ZUMTS17NTA exhibits R_θJA = 403 °C/W. When mounted on a 15 mm × 15 mm copper pour, R_θJA improves to 357 °C/W. This allows continuous 310 mW dissipation at +25°C ambient, sufficient for pulsed RF switching with <10% duty cycle in most front-end applications.

Can ZUMTS17NTA replace ZUMTS17N in existing designs?

Yes-ZUMTS17NTA is the tape-and-reel packaging variant of ZUMTS17N, sharing identical electrical, thermal, and mechanical specifications. The "TA" suffix denotes 3,000-unit 8 mm tape width on 7-inch reels; no design changes or requalification are required when migrating from ZUMTS17N to ZUMTS17NTA.