Diodes Incorporated BAS70-05-7-F

Overview

BAS70-05-7-F from Diodes Incorporated is a surface-mount Schottky barrier diode in SOT23 package, rated for 70 V peak reverse voltage, 70 mA continuous forward current, and 410 mV max forward voltage at 1.0 mA. It features a PN junction guard ring for transient and ESD protection, and delivers 5.0 ns reverse recovery time for high-speed switching in low-power signal routing applications.

For engineers reviewing the BAS70-05-7-F datasheet, BAS70-05-7-F pinout, BAS70-05-7-F application, or BAS70-05-7-F equivalent, key selection criteria include low VF for battery-sensitive circuits, fast tRR for high-frequency clamping, IR < 100 nA at 50 V for leakage-critical bias networks, and SOT23 footprint compatibility with space-constrained PCB layouts.

Technical Context

This Schottky diode uses a planar epitaxial construction with integrated PN guard ring to suppress edge breakdown and improve ESD robustness without compromising switching speed. Its low 410 mV forward voltage at 1.0 mA enables efficient voltage clamping and polarity protection in 3.3 V and 5 V logic interfaces.

The device operates across –55 °C to +125 °C junction temperature range and exhibits 2.0 pF total capacitance at 0 V reverse bias - critical for RF detector and high-speed sample-and-hold circuit performance where parasitic C must remain sub-3 pF.

Key Specifications

Pinout & Package

Package: SOT23 - 3-terminal plastic surface-mount package with 2.4 mm × 1.3 mm body, 0.9 mm height, and matte tin-plated alloy 42 leadframe. Moisture sensitivity level 1 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SBAT54LT1G and NSR0230HT1G, the BAS70-05-7-F uniquely balances ultra-low leakage (100 nA), sub-500 mV VF at microamp bias, and SOT23 footprint - making it optimal for precision low-current clamping where both leakage and voltage drop constrain design margins.

Availability

BAS70-05-7-F is available at Aetrix Electronics and suitable for USB port protection, RF detector circuits, low-voltage logic clamping, and microcontroller reset line protection requiring stable component supply across automotive infotainment, industrial IoT sensor nodes, and medical wearable devices.

Supply support for BAS70-05-7-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, manufacturing, and sales operations across Asia, Europe, and North America.

The BAS70 series belongs to Diodes' high-speed Schottky diode product line, engineered specifically for low-leakage, low-VF signal-level protection and detection in portable and space-constrained electronics.

FAQ

Is BAS70-05-7-F suitable for bidirectional ESD protection?

No - it is a unidirectional Schottky diode with anode and cathode terminals. For bidirectional ESD protection, a dual-diode array like the D3V3F1U2SOT23 or transient voltage suppression (TVS) diode is required. The BAS70-05-7-F provides effective clamping only when forward-biased or reverse-biased within its 70 V rating.

What is the maximum operating temperature for continuous use?

The BAS70-05-7-F has a specified operating junction temperature range of –55 °C to +125 °C. Under typical FR-4 PCB mounting with recommended pad layout, continuous operation at full 70 mA forward current is limited to ≤85 °C ambient due to 200 mW power dissipation and 625 °C/W thermal resistance.

Does BAS70-05-7-F have automotive qualification?

No - only the BAS70-04Q variant is AEC-Q101 qualified and PPAP capable. The BAS70-05-7-F is intended for commercial and industrial applications. Its construction includes a PN guard ring for ESD robustness, but it lacks the extended reliability testing and change control required for automotive-grade deployment.

Can BAS70-05-7-F replace BAS70-04-7-F in existing designs?

Yes - both share identical electrical specifications except reverse recovery time: BAS70-04-7-F has tRR = 2.0 ns, while BAS70-05-7-F is rated at 5.0 ns. If the application operates below ~200 MHz and does not require sub-3 ns switching, the -05 variant is a functional drop-in replacement with identical pinout, VF, IR, and package.