Diodes Incorporated BAV170

Overview

BAV170 from Diodes Incorporated is a dual low-leakage silicon switching diode in SOT23 package, configured as two independent anode-cathode junctions sharing a common cathode connection (dual-common-cathode), with 85 V peak reverse voltage, 215 mA forward current per diode, and 5 nA leakage at 75 V, used in precision signal clamping and low-current bias networks.

For engineers reviewing the BAV170 datasheet, BAV170 pinout, BAV170 application, or BAV170 equivalent, key selection criteria include ultra-low IR (≤5 nA @ 75 V), fast trr (≤3.0 µs), dual-diode topology in compact SOT23, and AEC-Q101 qualification for automotive-grade reliability validation.

Technical Context

The BAV170 integrates two discrete silicon PN junctions in a single SOT23-3 package with shared cathode terminal (Pin 3), enabling space-constrained dual-clamp or dual-bias functions without inter-device matching variance. Its low-leakage design targets high-impedance analog nodes where IR-induced offset error must be minimized.

Thermal resistance of 500 °C/W (RθJA) and 250 mW power dissipation rating require careful PCB pad layout per Diodes' recommended footprint; operation up to +150 °C ambient is supported, with leakage rising to 80 nA at TJ = +150 °C under VR = 75 V.

Key Specifications

Pinout & Package

SOT23-3 plastic surface-mount package (3.0 × 1.4 × 1.1 mm), molded UL 94V-0 compound, matte tin-plated alloy 42 leadframe, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual low-leakage diode applications.

Compared with BAV99 and MMBD7000, the BAV170 uniquely delivers sub-10 nA leakage at 75 V with AEC-Q101 qualification-making it the only option for high-reliability, low-error analog protection in automotive and medical edge devices.

Availability

BAV170 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC analog input cards, medical patient monitoring front-ends, and consumer audio input protection requiring stable component supply and long-term lifecycle support.

Supply support for BAV170 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 BAV170 belongs to Diodes' general-purpose switching diode product line, engineered specifically for space-constrained, low-leakage signal integrity applications in automotive, industrial, and medical electronics.

FAQ

What is the pin configuration of the BAV170?

The BAV170 uses a SOT23-3 package with Pin 1 as Anode 1, Pin 2 as Anode 2, and Pin 3 as the common cathode. This dual-common-cathode arrangement allows independent forward conduction paths sharing one return terminal, confirmed by Diodes' official top-view schematic and internal die photograph in DS30234 Rev. 13.

Is the BAV170 suitable for automotive applications?

Only the BAV170Q variant is AEC-Q101 qualified, PPAP capable, and manufactured in IATF16949-certified facilities. The standard BAV170 is not automotive-qualified; engineers must specify BAV170Q-7-F or BAV170Q-13-F for under-hood or safety-critical vehicle systems.

How does the BAV170's leakage current compare at elevated temperature?

At TJ = +150 °C and VR = 75 V, IR rises to 80 nA-16× higher than the 5 nA maximum at +25 °C. This is documented in the Electrical Characteristics table (Note 6) and validated in Fig. 3's reverse current curves, requiring thermal-aware design in high-ambient environments.

Can the BAV170 replace the BAV99 in existing designs?

Yes, the BAV170 is pin-compatible with the BAV99 and shares the same SOT23-3 footprint and dual-common-cathode topology. However, its 5 nA vs. 100 nA leakage and AEC-Q101 qualification (BAV170Q) make it a performance upgrade-not a drop-in replacement-where low-leakage or automotive compliance is required.