Diodes Incorporated BAW56T-7

Overview

BAW56T-7 from Diodes Incorporated is a dual common-cathode fast-switching silicon switching diode in SOT523 package, rated for 85 V peak repetitive reverse voltage, 155 mA forward current per element, and 4.0 ns reverse recovery time. It delivers high conductance and low forward voltage (0.715 V at 1 mA), suited for signal routing and clamping in compact consumer and industrial power management circuits.

For engineers reviewing the BAW56T-7 datasheet, BAW56T-7 pinout, BAW56T-7 application, or BAW56T-7 equivalent, key selection criteria include its dual-diode topology with shared cathode, ultra-small footprint, thermal resistance of 833 °C/W, and guaranteed performance across −55 °C to +150 °C operating range.

Technical Context

The BAW56T-7 integrates two independent PN junctions sharing a single cathode terminal, enabling bidirectional signal clamping or dual-path switching in space-constrained layouts. Its construction uses alloy-42 leadframe with matte tin plating and green molding compound compliant with UL 94V-0 and RoHS 3.

Designed for high-speed operation, it achieves 4.0 ns reverse recovery time under IF = IR = 10 mA, RL = 100 Ω conditions, with total capacitance of 0.81 pF at 0 V reverse bias and 1 MHz. Leakage remains below 2.0 µA at 75 V and 25 °C.

Key Specifications

Pinout & Package

Package: SOT523 - ultra-compact surface-mount plastic package measuring 1.60 mm × 1.60 mm × 0.75 mm (L × W × H), with moisture sensitivity level 1 per J-STD-020 and 0.002 g unit weight.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BAV99T-7-F and MMBD7000LT1G, the BAW56T-7 provides optimal balance of ultra-small size, 4.0 ns speed, and 85 V rating-making it preferred for next-generation portable electronics where board space and signal fidelity are critical.

Availability

BAW56T-7 is available at Aetrix Electronics and suitable for USB interface protection, low-voltage logic translation, RF detector front-ends, and power rail clamping requiring stable component supply and consistent parametric performance across production lots.

Supply support for BAW56T-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, manufacturing, and sales operations across Asia, Europe, and North America.

The BAW56T-7 belongs to Diodes' general-purpose fast-switching diode product line, engineered specifically for miniaturized signal integrity and protection functions in consumer, computing, and industrial systems where SOT523 footprint and nanosecond-level switching are essential.

FAQ

What is the polarity configuration of the BAW56T-7?

The BAW56T-7 features a dual common-cathode arrangement: Pin 1 is Anode 1, Pin 2 is the shared Cathode, and Pin 3 is Anode 2. This configuration is confirmed in the Diodes DS30260 Rev. 13–2 datasheet top-view diagram and verified via marking code "JD" on the device body.

Is the BAW56T-7 suitable for automotive applications?

The BAW56T-7 itself is not AEC-Q101 qualified; only the BAV99TQ variant in this family carries that qualification. However, its −55 °C to +150 °C operating range and IATF16949-manufactured process allow use in non-safety-critical automotive-adjacent systems like infotainment power sequencing or body control module interfaces.

How does the BAW56T-7's thermal performance compare to SOT-23 diodes?

With R_θJA = 833 °C/W on FR-4, the BAW56T-7 runs hotter than typical SOT-23 diodes (~300–450 °C/W). This requires tighter thermal pad layout adherence per Diodes' recommended footprint (C = 1.29 mm, X = 0.40 mm) and limits continuous power dissipation to ≤150 mW unless actively cooled.

Can the BAW56T-7 replace BAS16T in existing designs?

No-BAS16T is a single-diode SOT-23 device, while BAW56T-7 is a dual-diode SOT523 with different pinout and electrical ratings. Direct replacement would require PCB redesign. For dual-diode function, BAV70T-7-F (same SOT523, identical pinout) is a functional substitute with matched V_RRM, t_rr, and VF characteristics.