Diodes Incorporated BAS70-04Q-7-F

Overview

BAS70-04Q-7-F from Diodes Incorporated is an AEC-Q101 qualified surface-mount Schottky barrier diode in SOT23 package, rated for 70 V reverse voltage, 70 mA forward current, and 0.41 V max forward voltage at 1.0 mA - optimized for low-loss signal clamping and high-speed switching in automotive power management circuits.

For engineers reviewing the BAS70-04Q-7-F datasheet, BAS70-04Q-7-F pinout, BAS70-04Q-7-F application, or BAS70-04Q-7-F equivalent, key selection criteria include its 2.0 ns reverse recovery time (vs. 5.0 ns for standard BAS70), AEC-Q101 qualification, PN junction guard ring for ESD protection, and SOT23 footprint compatibility with space-constrained PCB layouts.

Technical Context

This Schottky diode uses a planar epitaxial structure with integrated PN junction guard ring to suppress edge breakdown and improve transient immunity. Its low 0.41 V forward voltage at 1.0 mA enables efficient voltage clamping in low-voltage logic interfaces and supply rail protection.

The device achieves 2.0 ns reverse recovery time under IF = IR = 10 mA to IR = 1.0 mA, RL = 100 Ω conditions - significantly faster than the 5.0 ns of the non-"-04" variants - making it suitable for high-frequency signal routing and fast-switching DC-DC feedback paths.

Key Specifications

Pinout & Package

Package: SOT23 - 3-terminal surface-mount plastic package with 0.915 mm body width, 2.40 mm length, and 1.30 mm height; moisture sensitivity level 1 per J-STD-020; lead-free matte tin plating over Alloy 42 leadframe.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SBAT54LT1G and BAS70-04-7-F, the BAS70-04Q-7-F uniquely delivers automotive-grade reliability (AEC-Q101 + PPAP) without sacrificing speed (2.0 ns tRR) or low VF - making it the sole option for safety-critical 12 V/48 V vehicle subsystems requiring traceable component sourcing.

Availability

BAS70-04Q-7-F is available at Aetrix Electronics and suitable for automotive infotainment systems, CAN/LIN bus protection modules, and low-voltage sensor interface circuits requiring stable component supply across extended production lifecycles.

Supply support for BAS70-04Q-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, specializing in high-reliability components for automotive, industrial, and computing markets.

The BAS70 family targets high-speed, low-leakage signal conditioning in compact power and interface circuits - with the "-04Q" variant specifically engineered to meet automotive qualification and change-control requirements.

FAQ

What does the "Q" suffix indicate in BAS70-04Q-7-F?

The "Q" suffix denotes AEC-Q101 qualification, PPAP capability, and manufacturing in IATF 16949 certified facilities. It confirms compliance with automotive stress testing standards including temperature cycling, humidity bias, and ESD robustness - distinguishing it from the commercial-grade BAS70-04-7-F.

Is BAS70-04Q-7-F pin-compatible with other SOT23 Schottky diodes?

Yes - it uses standard SOT23-3 pinout (Anode–Cathode–NC) and shares identical mechanical dimensions with industry-standard SOT23 packages. Pin 1 is Anode, Pin 2 is Cathode, and Pin 3 is internally unconnected but must be left floating or grounded per layout guidance to avoid parasitic coupling.

How does the PN junction guard ring improve performance?

The integrated PN junction guard ring suppresses edge breakdown under high electric field stress, increasing ESD immunity (±8 kV HBM) and improving transient survivability during load dump events. It also stabilizes reverse leakage across temperature, maintaining <0.1 µA IR up to +125°C junction temperature.

Can BAS70-04Q-7-F replace BAS70-06 in existing designs?

No - BAS70-06 has 100 V VR rating and 5.0 ns tRR, while BAS70-04Q-7-F offers 70 V VR and 2.0 ns tRR. Substitution requires verification of system-level voltage margin and timing constraints; using the -04Q variant in a 100 V application risks premature breakdown, and the -06 lacks the speed needed for high-frequency clamping.