Diodes Incorporated BAT54TW-7-F

Overview

BAT54TW-7-F from Diodes Incorporated is a dual-channel Schottky barrier diode array in SOT363 package, configured as two independent anode-common diodes (A1–C1 and A2–C2), with 30 V reverse voltage rating, 200 mA continuous forward current, and ultra-low 240–500 mV forward voltage at 0.1–100 mA. It serves in high-speed polarity protection and signal clamping circuits for USB data lines and low-voltage logic interfaces.

For engineers reviewing the BAT54TW-7-F datasheet, BAT54TW-7-F pinout, BAT54TW-7-F application, or BAT54TW-7-F equivalent, key selection criteria include its symmetrical dual-anode-common topology, 5 ns reverse recovery time, 10 pF junction capacitance at 1 V, thermal resistance of 625 °C/W, and RoHS-compliant matte tin-plated terminals suitable for reflow soldering.

Technical Context

The BAT54TW-7-F integrates two independent Schottky diodes sharing a common anode terminal pair (A1/A2) and separate cathodes (C1/C2), enabling bidirectional clamping or dual-rail protection without cross-coupling. Its guard-ringed PN junction suppresses ESD transients up to ±8 kV (HBM) while maintaining fast switching behavior.

Designed for surface-mount operation on FR-4 PCBs with 2 oz copper, it delivers stable performance from –65 °C to +150 °C ambient, with derated forward current dropping to ~0.15 A at 125 °C and thermal shutdown avoided below 200 mW dissipation under typical layout conditions.

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, UL 94V-0 rated, 0.006 g weight.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DMG1012T-7 and BAT54C-7-F, BAT54TW-7-F uniquely provides anode-common dual diodes in a single SOT363, enabling compact bidirectional clamping without layout or netlist changes required by alternative topologies.

Availability

BAT54TW-7-F is available at Aetrix Electronics and suitable for USB interface protection, low-voltage level shifting, industrial sensor conditioning, and redundant power OR-ing requiring stable component supply across production lifecycles.

Supply support for BAT54TW-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 manufacturing in China, Taiwan, and the US.

The BAT54 series belongs to Diodes' precision Schottky diode product line, engineered specifically for high-speed signal integrity and robust ESD protection in space-constrained consumer, computing, and industrial applications.

FAQ

What is the pin 5 and pin 6 connection status in BAT54TW-7-F?

Pins 5 and 6 are internally unconnected (NC) and not bonded to any die structure. They must remain electrically floating in PCB layout; grounding or routing them may introduce parasitic coupling or violate JEDEC SOT363 mechanical specifications. No thermal pad or solder mask opening is required beneath these pins.

Can BAT54TW-7-F replace BAT54C-7-F in an existing design?

No - BAT54TW-7-F has an anode-common configuration (A1/A2 inputs, C1/C2 outputs), while BAT54C-7-F is cathode-common (C1/C2 inputs, A1/A2 outputs). Swapping them without modifying the schematic will reverse bias conditions and cause functional failure. Layout compatibility does not imply electrical interchangeability.

What is the maximum allowable PCB temperature rise during 200 mA operation?

At 200 mA and 320 mV VF, power dissipation is 64 mW per diode. With RθJA = 625 °C/W, the junction-to-ambient temperature rise is ~40 °C. To maintain TJ ≤ 150 °C, ambient must stay ≤ 110 °C - achievable with ≥25 mm² 2 oz copper pour and no adjacent high-power components.

Does BAT54TW-7-F meet AEC-Q200 stress test requirements?

No - BAT54TW-7-F is not AEC-Q200 qualified. The automotive-grade variant is BAT54TWQ-7-F (documented separately), which undergoes extended temperature cycling, board flex, and humidity testing per AEC-Q200 Rev D. Standard BAT54TW-7-F is rated for industrial temperature range only.