Infineon Technologies BAW 56 B5003

Overview

BAW56 B5003 from Nexperia is a silicon double diode in common-anode configuration housed in SC74 (SOT-363) package, rated for 80 V reverse voltage, 200 mA forward current, and 4 ns reverse recovery time-optimized for high-speed switching in signal routing and ESD protection circuits in automotive infotainment interfaces.

For engineers reviewing the BAW56 B5003 datasheet, BAW56 B5003 pinout, BAW56 B5003 application, or BAW56 B5003 equivalent, this dual switching diode supports fast transient response, low capacitance (2 pF), and AEC-Q101 qualification-critical for CAN bus interface clamping, RF antenna switching, and multi-rail power rail isolation in compact PCB layouts.

Technical Context

The BAW56 B5003 integrates two identical epitaxial planar diodes sharing a common anode terminal, enabling bidirectional clamping or dual-path switching without cross-coupling. Its 2 pF junction capacitance at 0 V and 4 ns trr support >100 MHz signal integrity in RF front-end switching.

Thermal design is enabled by RthJS = 240 K/W (SC74 package), with maximum junction temperature of 150 °C and guaranteed operation up to 150 °C ambient when derated per IF–TS curves-making it suitable for under-hood automotive modules where thermal cycling and space constraints are critical.

Key Specifications

Pinout & Package

BAW56 B5003 is packaged in SC74 (SOT-363), a 6-pin surface-mount plastic package with gull-wing leads, 0.65 mm pitch, and exposed thermal pad (not electrically connected). Pin 1 marking is indicated by a dot or beveled edge.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BAV99W and DMN2004KQ-7, BAW56 B5003 uniquely delivers common-anode topology with AEC-Q101 validation, making it the only drop-in solution for automotive bidirectional clamping where anode bias simplifies layout and improves thermal coupling to VCC planes.

Availability

BAW56 B5003 is available at Aetrix Electronics and suitable for automotive infotainment systems, RF front-end modules, and industrial USB interface designs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for BAW56 B5003 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 essential efficiency-delivering high-performance, reliable discrete, logic, and MOSFET devices for automotive, industrial, and mobile markets.

BAW56 B5003 belongs to Nexperia's AEC-Q101-qualified high-speed switching diode product line, engineered specifically for robust signal integrity and thermal resilience in automotive signal conditioning and interface protection applications.

FAQ

What is the pin 1 identification method for BAW56 B5003 in SC74 package?

Pin 1 is identified by a molded dot or beveled edge located at the top-left corner of the SC74 (SOT-363) package when viewed from the top with markings upright and leads pointing downward. The dot aligns adjacent to lead 1, and the bevel runs along the top edge from pin 1 toward pin 6. No orientation is defined in tape-and-reel for symmetric types, so board-level fiducials must be used for automated placement verification.

Does BAW56 B5003 support bidirectional ESD clamping on differential lines?

Yes-its common-anode dual-diode structure enables symmetrical clamping of differential signals like USB D+/D− or CAN_H/CAN_L when the common anode is biased to VCC and cathodes connect to each line. With 0.15 µA IR at 70 V and 2 pF CT, it provides low-leakage, low-distortion protection meeting IEC 61000-4-2 Level 4 without degrading signal rise time.

How does thermal derating work for BAW56 B5003 at elevated ambient temperatures?

Per the IF–TS curve for SC74 package, continuous forward current must be linearly derated above 90 °C case temperature: from 200 mA at TS ≤ 90 °C down to 0 mA at TS = 150 °C. At 125 °C case, max IF drops to ~85 mA. This reflects its 250 mW Ptot rating and 240 K/W RthJS-designers must measure actual TS via thermal simulation or thermocouple to ensure safe operation.

Can BAW56 B5003 replace BAV99 in existing designs?

Only with schematic and layout revision: BAW56 B5003 has common-anode configuration versus BAV99's common-cathode. Swapping requires re-routing bias connections-tying the shared anode to VCC instead of grounding the shared cathode. Electrical specs (trr, CT, VR) are nearly identical, but polarity reversal affects clamping direction and fault current paths in overvoltage events.