Infineon Technologies BA892H6127XTSA1

Overview

BA892H6127XTSA1 from Infineon Technologies 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 - enabling low-loss signal path control in compact consumer RF modules.

For engineers reviewing the BA892H6127XTSA1 datasheet, BA892H6127XTSA1 pinout, BA892H6127XTSA1 application, or BA892H6127XTSA1 equivalent, key selection criteria include verified RF insertion loss (<0.5 dB at 1.8 GHz), reverse voltage rating (35 V), junction temperature limit (150 °C), RoHS-compliant Pb-free construction, and AEC-Q101 qualification for automotive tuner modules.

Technical Context

This diode operates as a voltage-controlled RF switch: forward bias enables low-resistance conduction (rf ≤ 0.7 Ω @ 100 MHz), while reverse bias provides high impedance isolation (RP ≥ 100 kΩ @ 100 MHz). Its 3 µm I-region width and 120 ns charge carrier lifetime support fast switching between RF bands without signal distortion.

Designed for series-switch topology in 50 Ω systems, it achieves 5.5 dB isolation at 1 GHz and <0.4 dB insertion loss at 1.8 GHz with 10 mA bias - meeting requirements for UHF/L-band antenna tuning and diversity switching in portable receivers.

Key Specifications

Pinout & Package

SC79 package: ultra-small surface-mount plastic case (1.3 × 0.7 × 0.5 mm), cathode-marked top-side, designed for high-density RF PCB layouts with minimal parasitic inductance.

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, BA892H6127XTSA1 offers optimal balance of sub-1 pF capacitance, 23.5 dB isolation at 100 MHz, and AEC-Q101 compliance - making it the preferred choice for automotive and portable broadcast tuner designs requiring proven thermal and RF stability.

Availability

BA892H6127XTSA1 is available at Aetrix Electronics and suitable for TV tuner front-ends, mobile DTV receivers, and automotive infotainment systems requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for BA892H6127XTSA1 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 electronics, with global manufacturing and quality certification to ISO/TS 16949.

BA892H6127XTSA1 belongs to Infineon's RF Switching Diode product line, engineered specifically for high-isolation, low-loss band selection in broadcast and wireless receiver front-ends - not general-purpose rectification or protection.

FAQ

What is the maximum RF frequency range supported by BA892H6127XTSA1?

BA892H6127XTSA1 is characterized up to 2 GHz in insertion loss and isolation plots, with verified performance at 1.8 GHz (IL ≤ 0.4 dB, ISO ≥ 5.5 dB). Its 0.45 Ω forward resistance and 1.4 pF capacitance support stable operation through UHF and lower L-band frequencies, though system-level matching determines practical upper limit.

Does BA892H6127XTSA1 require external bias circuitry for RF switching?

Yes - it requires a DC bias network to apply forward current (typically 3–10 mA) for ON-state conduction or reverse voltage (≥5 V) for OFF-state isolation. No integrated driver is present; external resistors or CMOS logic-level switches must generate the control voltage/current per application note AN2011-07.

Is BA892H6127XTSA1 compatible with lead-free reflow soldering profiles?

Yes - its SC79 package is qualified for standard JEDEC J-STD-020D lead-free reflow, with peak temperature tolerance up to 260 °C for 10 seconds. The Pb-free molding compound and termination finish meet IPC-J-STD-609A Class 1 requirements.

How does BA892H6127XTSA1 differ from BA892-02L?

BA892H6127XTSA1 is the SC79-packaged variant; BA892-02L uses SCD80 package with identical electrical specs but different thermal resistance (R_thJS ≤ 70 K/W vs. ≤ 120 K/W) and footprint. H6127XTSA1 marking denotes tape-and-reel packaging (3,000 pcs/reel, 2 mm pitch) and date code 2011-07-21.