Diodes Incorporated BAT54SDW-7

Overview

BAT54SDW-7 from Diodes Incorporated is a dual-channel surface-mount Schottky barrier diode array in SOT363 package, configured as a common-cathode pair with 30 V reverse voltage rating, 200 mA continuous forward current per diode, and 5.0 ns reverse recovery time. It serves as a high-speed signal clamping and polarity protection device in USB data lines, low-voltage DC-DC converter feedback paths, and ESD-sensitive I/O interfaces.

For engineers reviewing the BAT54SDW-7 datasheet, BAT54SDW-7 pinout, BAT54SDW-7 application, or BAT54SDW-7 equivalent, key selection criteria include its symmetrical dual-diode topology, ultra-low VF (max 400 mV at 10 mA), 10 pF junction capacitance at 1.0 V, and integrated PN junction guard ring for transient suppression-critical for portable electronics and automotive body control modules.

Technical Context

The BAT54SDW-7 integrates two independent Schottky diodes sharing a common cathode terminal, enabling bidirectional clamping or dual-path rectification in compact space-constrained layouts. Its low barrier height yields fast switching (tRR ≤ 5.0 ns) and minimal conduction loss, while the guard-ringed die structure enhances robustness against ESD (per IEC 61000-4-2 Level 4) and repetitive transients.

This device operates across –65 °C to +150 °C ambient, with thermal resistance RθJA = 625 °C/W on standard FR-4 PCB, and maintains stable VF and IR performance over temperature-verified from –55 °C to +150 °C in characterization curves. It is not rated for automotive AEC-Q101 qualification; the BAT54SDWQ variant fulfills that requirement.

Key Specifications

Pinout & Package

Package: SOT363 - ultra-small 6-pin surface-mount plastic package (2.0 × 2.225 × 0.9 mm), moisture sensitivity level 1, matte tin-plated leads, weight ≈ 0.006 g.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual Schottky diode array applications.

Compared with SBAT54DW-7-F and BAT54CDW-7-F, the BAT54SDW-7 offers optimal balance of low VF, tight thermal profile, and common-cathode symmetry for USB and feedback-path applications-whereas SBAT54DW-7-F trades margin for voltage headroom, and BAT54CDW-7-F requires schematic redesign due to inverted topology.

Availability

BAT54SDW-7 is available at Aetrix Electronics and suitable for USB interface protection, DC-DC converter feedback networks, and automotive body control module I/O conditioning requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for BAT54SDW-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.

The BAT54 series belongs to Diodes' high-reliability Schottky diode product line, engineered specifically for low-voltage, high-speed signal integrity and ESD-hardened applications in consumer, computing, and industrial electronics.

FAQ

What is the cathode connection configuration in BAT54SDW-7?

Pins 2 and 5 are internally bonded to the same cathode node, forming a dual-terminal common-cathode structure. This design lowers effective series resistance and improves thermal dissipation versus single-cathode packages, and is verified in the SOT363 mechanical drawing and DS30152 Rev. 21 pinout diagram.

Does BAT54SDW-7 meet AEC-Q101 for automotive use?

No-BAT54SDW-7 is not AEC-Q101 qualified. The automotive-grade version is BAT54SDWQ-7-F, which undergoes additional stress testing including HTOL, TCT, and ESD per AEC-Q101 Rev. E. Standard BAT54SDW-7 is rated for industrial temperature range (–65 °C to +150 °C) but lacks automotive qualification documentation.

Can BAT54SDW-7 replace BAT54ADW-7-F in a design?

No-BAT54ADW-7-F is a common-anode dual Schottky, while BAT54SDW-7-F is common-cathode. Their pinouts are incompatible: BAT54ADW has anodes on pins 1 and 3, cathodes on pins 2 and 5; BAT54SDW has anodes on pins 1 and 3, shared cathode on pins 2 and 5. Swapping them would reverse bias both diodes and cause functional failure.

What is the maximum soldering temperature profile for BAT54SDW-7?

The device complies with J-STD-020 Moisture Sensitivity Level 1, permitting unlimited floor life and standard Pb-free reflow profiles. Peak temperature must not exceed 260 °C for ≤ 30 seconds, with ramp-up rate ≤ 3 °C/s and ramp-down rate ≤ 6 °C/s, per Diodes' packaging specification and JEDEC standards.