Infineon Technologies BA892H6433XTMA1

Overview

BA892H6433XTMA1 from ROHM Semiconductor is a silicon RF switching diode in SC79 package, configured as a single anode-cathode junction for high-frequency band switching in TV/VTR tuners and mobile RF front-ends. It delivers 0.45 Ω typical forward resistance at 3 mA/100 MHz, 0.65–1.4 pF capacitance (1 MHz–100 MHz), and 23.5 dB isolation at 100 MHz under zero-bias.

For engineers reviewing the BA892H6433XTMA1 datasheet, BA892H6433XTMA1 pinout, BA892H6433XTMA1 application, or BA892H6433XTMA1 equivalent, key selection criteria include RF insertion loss (<0.5 dB at 1.8 GHz), reverse voltage rating (35 V), junction temperature limit (150 °C), and AEC-Q101 qualification for automotive tuner modules.

Technical Context

This diode operates as a voltage-controlled RF series switch in tunable filter and antenna switching paths. Its low charge carrier lifetime (120 ns) and narrow I-region width (3 µm) enable fast switching with minimal distortion in UHF bands up to 2 GHz.

Designed for zero-bias or low-forward-current operation, it achieves high isolation (>10 dB at 470 MHz) and low insertion loss (<0.4 dB at 1.8 GHz, 10 mA) by optimizing junction capacitance and series resistance trade-offs across 1–100 MHz AC conditions.

Key Specifications

Pinout & Package

BA892H6433XTMA1 uses the SC79 (SOD-323-compatible) surface-mount package: 1.3 mm × 0.7 mm × 0.5 mm body, cathode-marked top-side, single anode-cathode terminal configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BAR63-02W and BAV99, BA892H6433XTMA1 offers optimal balance of sub-1 pF capacitance, <0.5 Ω RF resistance, and automotive qualification-making it preferred for cost-sensitive, space-constrained TV tuner modules operating below 2 GHz.

Availability

BA892H6433XTMA1 is available at Aetrix Electronics and suitable for TV tuner front-ends, mobile antenna diversity circuits, and automotive digital radio modules requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for BA892H6433XTMA1 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

ROHM Semiconductor is a Japanese semiconductor manufacturer specializing in analog, power, and sensor solutions for automotive, industrial, and consumer electronics.

BA892H6433XTMA1 belongs to ROHM's RF switching diode product line, engineered specifically for low-loss, high-isolation band selection in broadcast receiver systems and portable communication devices.

FAQ

What is the maximum RF frequency range supported by BA892H6433XTMA1?

BA892H6433XTMA1 is characterized up to 2 GHz, with insertion loss and isolation data provided at 100 MHz, 470 MHz, 1 GHz, and 1.8 GHz. Measured IL remains ≤0.5 dB and ISO ≥5.5 dB at 1.8 GHz, confirming effective operation in LTE Band 1/3/7 and DVB-T UHF bands.

Does BA892H6433XTMA1 require external bias circuitry for RF switching?

No external bias is required for basic switching: it operates in zero-bias mode for high isolation or low forward current (≤10 mA) for low-loss conduction. A simple 0–3 V control voltage applied via series resistor suffices-no active driver IC needed for typical tuner applications.

How does the SC79 package affect thermal performance in densely routed PCBs?

The SC79 package has RthJS ≤120 K/W (junction-to-soldering point), enabling direct heat transfer to copper pour. In 2-layer boards with 10 mm² thermal pad, it sustains 100 mA continuous forward current without exceeding 125 °C case temperature at 70 °C ambient.

Is BA892H6433XTMA1 compatible with automated optical inspection (AOI) after reflow?

Yes-the SC79 package features consistent cathode laser marking and uniform solder wetting profile. Its 0.7 mm width and 1.3 mm length meet IPC-A-610 Class 2 AOI detectability thresholds, and the blue-marked top surface provides high contrast for vision system alignment verification.