Infineon Technologies BAR 63-02W H6433

Overview

BAR 63-02W H6433 from Infineon Technologies is a silicon PIN diode optimized for high-speed RF signal switching in series configuration, featuring 0.21 pF typical capacitance at 5 V/1 MHz, 1.2 Ω typical forward resistance at 5 mA/100 MHz, and ≤0.11 dB insertion loss at 1.8 GHz with 5 mA bias - deployed in cellular front-end modules and antenna tuning circuits.

For engineers reviewing the BAR 63-02W H6433 datasheet, BAR 63-02W H6433 pinout, BAR 63-02W H6433 application, or BAR 63-02W H6433 equivalent, key selection criteria include RF isolation above 12.3 dB at 1.8 GHz, low thermal resistance (≤140 K/W), AEC-Q101 qualification, and SCD80 package compatibility with high-frequency PCB layout constraints.

Technical Context

This PIN diode operates as a voltage-controlled RF switch in series topology, where forward bias reduces series impedance (<1.2 Ω) for low-loss signal path conduction, while reverse bias maximizes shunt isolation (>12 dB at 1.8 GHz) via sub-0.3 pF junction capacitance. Its I-region width of 4.5 µm enables nanosecond-scale carrier lifetime (75 ns typ.) critical for TDMA and TDD timing.

The device uses a single, leadless SCD80 package with two terminals, supporting DC blocking and RF bypass functions without external bias networks. Thermal design relies on its 140 K/W junction-to-soldering-point resistance to sustain 100 mA continuous forward current within −55 °C to +125 °C operating range.

Key Specifications

Pinout & Package

BAR 63-02W H6433 is housed in the SCD80 (SC-79 compatible) surface-mount package: 1.3 mm × 0.85 mm × 0.5 mm, leadless, single-diode configuration with anode and cathode terminals exposed on opposite ends of the molded body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SKY13370-374LF and BAT64-02W, BAR 63-02W H6433 delivers superior isolation-bandwidth trade-off (12.3 dB @ 1.8 GHz vs. 10.1 dB) and automotive-grade reliability, making it optimal for safety-critical RF switching where thermal stability and voltage margin are prioritized over minimal R_f.

Availability

BAR 63-02W H6433 is available at Aetrix Electronics and suitable for cellular front-end modules, automotive telematics systems, Wi-Fi 6E access points, and industrial IoT sensor hubs requiring stable component supply across extended temperature and lifecycle windows.

Supply support for BAR 63-02W H6433 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 and IATF 16949 standards.

BAR 63-02W H6433 belongs to Infineon's high-frequency PIN diode product line, engineered specifically for RF signal routing in 4G/5G infrastructure, automotive connectivity, and wireless sensing applications demanding low loss and high isolation.

FAQ

What is the maximum RF frequency supported by BAR 63-02W H6433?

The device is characterized up to 3 GHz per datasheet specification, with measured isolation ≥10 dB and insertion loss ≤0.15 dB through 2.45 GHz. Performance beyond 2.45 GHz degrades due to parasitic inductance; design validation is required for 2.7–3.0 GHz use cases.

Does BAR 63-02W H6433 require external DC blocking capacitors?

No - the SCD80 package has no internal DC path between terminals, and the diode operates with DC bias applied directly to anode/cathode. External blocking is only needed if the RF source/load contains DC offset incompatible with the 50 V reverse rating.

How does BAR 63-02W H6433 compare to BAR 63-02V in thermal performance?

Both share identical 140 K/W R_thJS, but BAR 63-02W uses white marking and is qualified to AEC-Q101, whereas BAR 63-02V uses green marking and lacks automotive qualification - making BAR 63-02W mandatory for under-hood RF modules.

Can BAR 63-02W H6433 be used in parallel configuration?

No - the device is specified only for series switching per datasheet test conditions and application notes. Parallel use would unbalance current sharing and degrade isolation due to mismatched C_T and R_f; common-anode/cathode variants like BAR63-04W are required for shunt topologies.