Infineon Technologies BA89202VH6127XTSA1

Overview

BA89202VH6127XTSA1 from Infineon Technologies is a silicon RF switching diode in SC79 package, configured as a single anode-cathode junction for high-frequency band switching. 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 - enabling use in TV/VTR tuner front-ends and mobile RF module antenna switching.

For engineers reviewing the BA89202VH6127XTSA1 datasheet, BA89202VH6127XTSA1 pinout, BA89202VH6127XTSA1 application, or BA89202VH6127XTSA1 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), RoHS-compliant Pb-free construction, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This diode operates as a voltage-controlled RF switch via forward/reverse biasing of its PN junction. Its low series inductance (0.4 nH) and minimal I-region width (3 µm) enable fast carrier lifetime (120 ns) and stable impedance matching across UHF bands up to 2 GHz.

Designed for series-switch topology in 50 Ω systems, it achieves <0.4 dB insertion loss at 1.8 GHz under 3 mA bias and >10.5 dB isolation at 470 MHz with zero-bias - critical for multi-band cellular front-end modules requiring minimal signal degradation during antenna path reconfiguration.

Key Specifications

Pinout & Package

SC79 package: ultra-small surface-mount plastic case (1.3 × 0.7 × 0.5 mm), cathode-marked, lead-free, moisture-sensitive level 1 (MSL1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with BAR63-02W and BA892-02L, BA89202VH6127XTSA1 offers superior 1.8 GHz insertion loss and tighter capacitance control - making it optimal for space-constrained, multi-band mobile RF designs where signal fidelity and miniaturization are co-prioritized.

Availability

BA89202VH6127XTSA1 is available at Aetrix Electronics and suitable for TV tuner front-ends, mobile cellular antenna switching, and automotive infotainment systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for BA89202VH6127XTSA1 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 global manufacturing and quality certification to IATF 16949.

BA89202VH6127XTSA1 belongs to Infineon's high-frequency silicon switching diode product line, engineered specifically for low-loss, high-isolation RF path control in broadcast and wireless communication equipment.

FAQ

What is the maximum RF frequency at which BA89202VH6127XTSA1 maintains usable insertion loss?

BA89202VH6127XTSA1 maintains ≤0.5 dB insertion loss up to 1.8 GHz at 3 mA bias, and ≤1.0 dB up to 2.5 GHz per measured S-parameter data. Performance degrades above 3 GHz due to parasitic inductance and capacitance limits inherent to the SC79 package and silicon structure.

Can BA89202VH6127XTSA1 replace BA892-02L in existing designs?

No - BA89202VH6127XTSA1 uses SC79 packaging while BA892-02L uses SCD80. Though electrically identical, their footprints differ: SC79 measures 1.3 × 0.7 mm vs. SCD80's 1.7 × 0.8 mm. Direct replacement requires PCB land pattern revision and solder paste volume adjustment.

Does BA89202VH6127XTSA1 require external DC blocking capacitors in RF paths?

No - its monolithic silicon structure provides intrinsic DC isolation between anode and cathode. External blocking capacitors are unnecessary unless system-level DC bias injection or common-mode rejection requirements dictate additional filtering beyond the diode's native 100 kΩ reverse parallel resistance at 100 MHz.

Is thermal derating required for continuous 100 mA forward current operation?

Yes - while rated for 100 mA DC, sustained current at that level exceeds thermal limits in SC79. At 25 °C ambient, 100 mA causes ~120 °C junction rise (R_thJS = 120 K/W). Derate to ≤30 mA for continuous operation without forced cooling or copper pour enhancement.