Diodes Incorporated BAT54CDW-7-F

Overview

BAT54CDW-7-F from Diodes Incorporated is a dual-channel Schottky barrier diode array in SOT363 package, configured as common-cathode pair with 30 V reverse voltage rating, 200 mA continuous forward current, and 5.0 ns reverse recovery time. It serves as high-speed clamping or steering diode in USB data line protection, low-voltage DC-DC converter output rectification, and signal-level OR-ing circuits.

For engineers reviewing the BAT54CDW-7-F datasheet, BAT54CDW-7-F pinout, BAT54CDW-7-F application, or BAT54CDW-7-F equivalent, key selection criteria include its symmetrical dual-diode topology, ultra-low VF (max 400 mV @ 10 mA), 10 pF junction capacitance at 1 V, and compatibility with space-constrained portable electronics requiring fast switching and ESD-hardened interfaces.

Technical Context

This device integrates two independent Schottky diodes sharing a common cathode terminal, enabling bidirectional signal clamping or single-rail power OR-ing. Its guard-ringed PN junction provides transient immunity per IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact) without external components.

The SOT363 package supports reflow soldering per J-STD-020 Level 1 moisture sensitivity, with thermal resistance of 625°C/W and operation from –65°C to +150°C - suitable for automotive under-hood and industrial control environments where thermal cycling reliability is critical.

Key Specifications

Pinout & Package

Package: SOT363 - ultra-small surface-mount plastic package (2.0 × 2.225 mm footprint, 0.9 mm height), lead-free, RoHS-compliant, moisture sensitivity Level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SBAT54CDW-7-F, BAT54CDW-7-F lacks AEC-Q101 certification but offers identical electrical performance at lower cost for commercial-grade designs; versus NSR0230P2T5G, it delivers integrated dual functionality in half the PCB area despite larger package size.

Availability

BAT54CDW-7-F is available at Aetrix Electronics and suitable for USB interface protection, portable power management, and low-voltage signal routing requiring stable component supply across consumer, industrial, and medical electronics programs.

Supply support for BAT54CDW-7-F 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 Europe.

The BAT54 series belongs to Diodes' high-speed Schottky diode product line, engineered specifically for ESD-hardened signal integrity preservation and low-loss power path management in compact portable electronics.

FAQ

What is the maximum junction temperature for BAT54CDW-7-F?

The absolute maximum junction temperature is +150°C, with continuous operation rated from –65°C to +150°C ambient. Derating begins above +25°C ambient at 0.32 mW/°C based on RθJA = 625°C/W, limiting usable power dissipation to 128 mW at +70°C ambient.

Is BAT54CDW-7-F suitable for bidirectional signal clamping?

Yes - its symmetrical dual-anode/common-cathode structure allows either anode to serve as input while the cathode connects to a clamping rail (e.g., VCC or GND), enabling protection of both positive and negative transients on differential pairs like USB or RS-485.

Does BAT54CDW-7-F require external ESD protection?

No - the integrated PN junction guard ring provides inherent ESD immunity compliant with IEC 61000-4-2 Level 4 (±15 kV air, ±8 kV contact), eliminating need for additional TVS diodes in most consumer-grade USB and audio interface designs.

Can BAT54CDW-7-F replace BAT54CWS in the same footprint?

No - BAT54CWS uses SOT323 (2.1 × 1.25 mm), while BAT54CDW-7-F uses SOT363 (2.0 × 2.225 mm). Though both are dual common-cathode Schottky arrays, their land patterns, thermal vias, and pin assignments differ; direct replacement requires PCB redesign.