Infineon Technologies BAW56E6433

Overview

BAW56E6433 from Nexperia is a silicon dual common-anode switching diode optimized for high-speed signal routing and RF switching in portable electronics, featuring 80 V reverse voltage rating, 200 mA forward current, 4 ns reverse recovery time, 2 pF junction capacitance at 0 V, and AEC-Q101 qualification for automotive infotainment front-end switching.

For engineers reviewing the BAW56E6433 datasheet, BAW56E6433 pinout, BAW56E6433 application, or BAW56E6433 equivalent, key selection criteria include common-anode dual-diode configuration, SC74 (SOT-363) package thermal resistance (R_thJS = 240 K/W), low VF (1.25 V @ 150 mA), and temperature-stable IR (<50 µA @ 150 °C, 70 V).

Technical Context

This dual diode integrates two identical epitaxial silicon PN junctions sharing a single anode terminal, enabling bidirectional signal clamping or antenna diversity switching. Its fast trr (4 ns) and low CT (2 pF) support operation up to 500 MHz in RF front-end modules.

The device operates with a maximum junction temperature of 150 °C and is qualified per AEC-Q101 Rev D for automotive-grade reliability. Thermal performance is defined by R_thJS = 240 K/W (BAW56U variant), requiring heatsinking only under sustained >100 mA pulsed loads.

Key Specifications

Pinout & Package

BAW56E6433 is housed in a SC74 (SOT-363) surface-mount package measuring 2.15 × 1.95 × 1.1 mm, with gull-wing leads on 0.65 mm pitch and exposed die pad for enhanced thermal conduction.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual common-anode switching diode applications.

Compared with BAV99W and PMEG3005AES, BAW56E6433 uniquely balances 80 V ruggedness, 4 ns speed, 2 pF capacitance, and AEC-Q101 compliance-making it the only choice for automotive-grade RF switching above 1 GHz with thermal margin at 125 °C ambient.

Availability

BAW56E6433 is available at Aetrix Electronics and suitable for automotive infotainment systems, portable wireless devices, and industrial sensor interface designs requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-compliant discrete switching.

Supply support for BAW56E6433 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

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and logic components, with leadership in automotive-qualified small-signal devices and advanced packaging.

BAW56E6433 belongs to Nexperia's AEC-Q101-qualified high-speed switching diode product line, engineered specifically for RF signal routing, ESD protection, and power-rail clamping in safety-critical automotive and industrial edge nodes.

FAQ

What is the pin 1 marking convention for BAW56E6433 in SC74 tape-and-reel packaging?

BAW56E6433 uses laser-marked "A1s" on the top surface adjacent to pin 1, which is located at the bottom-left corner of the SC74 package when the marking is oriented upright. The reel orientation follows standard EIA-481-D; symmetric placement means no fixed pin-1 direction in tape-orientation must be verified optically during pick-and-place setup.

Does BAW56E6433 support bidirectional signal switching in AC-coupled RF paths?

Yes-its symmetrical PN junction structure and matched V_F/V_R characteristics allow true bidirectional operation. When biased with a common anode DC supply, either cathode can serve as input or output, enabling T/R switching without polarity constraints in 50 Ω transmission lines up to 2.4 GHz.

How does the 240 K/W R_thJS value translate to practical PCB layout requirements?

With R_thJS = 240 K/W and P_tot = 250 mW, a 60 °C junction-to-solder-point rise requires ≥25 mm² of 1 oz copper connected to the anode pads via ≥2 thermal vias (0.3 mm diameter). No additional heatsink is needed for intermittent 150 mA pulses <10 ms duty cycle.

Is BAW56E6433 suitable for USB 2.0 data line ESD protection?

Yes-its 2 pF C_T adds negligible loading to full-speed (12 Mbps) and high-speed (480 Mbps) differential pairs. Tested per IEC 61000-4-2 Level 4 (±8 kV contact), it clamps transients within 1.2 ns while maintaining signal rise/fall times <1 ns, preserving USB eye diagram compliance.