STMicroelectronics BAS70-06FILM

Overview

BAS70-06FILM from STMicroelectronics is a dual Schottky diode in common-anode configuration, designed for RF signal detection and temperature compensation circuits. It delivers 70 V reverse voltage rating, 70 mA continuous forward current, 2 pF junction capacitance at 0 V, 30 Ω differential forward resistance at 100 MHz, and 1.5 nH series inductance - enabling high-frequency rectification in compact wireless front-ends.

For engineers reviewing the BAS70-06FILM datasheet, BAS70-06FILM pinout, BAS70-06FILM application, or BAS70-06FILM equivalent, key selection criteria include low capacitance for minimal RF loading, matched diode characteristics for balanced detector operation, common-anode topology for differential signal handling, and SOT-23 package compatibility with high-density RF PCB layouts.

Technical Context

The BAS70-06FILM integrates two monolithic Schottky barrier diodes sharing a single anode terminal, forming a matched pair optimized for RF envelope detection and precision temperature sensing. Its low 2 pF capacitance and 1.5 nH series inductance minimize parasitic reactance up to 1 GHz, while the 30 Ω differential forward resistance ensures consistent small-signal conduction across both diodes.

Thermal performance is defined by a 500 °C/W junction-to-ambient thermal resistance on epoxy PCBs with recommended pad layout, supporting stable operation at junction temperatures up to 150 °C. Reverse leakage remains below 10 µA at 70 V and 25 °C, ensuring low DC offset in detector outputs.

Key Specifications

Pinout & Package

Package: SOT-23 (3-pin, plastic surface-mount), compliant with ECOPACK® environmental standards and UL94 V0 flammability rating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSR0230HT1G and CMKD704TR, BAS70-06FILM uniquely provides matched common-anode topology with 70 V rating and 2 pF capacitance - making it the only option among the three qualified for precision RF detectors above 400 MHz requiring inherent diode pairing.

Availability

BAS70-06FILM is available at Aetrix Electronics and suitable for RF detector modules, temperature-compensated oscillators, high-speed logic clamps, and low-power bias generators requiring stable component supply and traceable sourcing.

Supply support for BAS70-06FILM 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The BAS70 series belongs to ST's precision RF diode product line, engineered specifically for signal integrity in high-frequency detection, mixing, and temperature-sensing applications where low capacitance, matched characteristics, and thermal stability are essential.

FAQ

What is the maximum operating frequency for BAS70-06FILM in RF detector applications?

The BAS70-06FILM achieves usable performance up to 1.3 GHz, determined by its 1.5 nH series inductance and 2 pF junction capacitance. At 433 MHz, measured insertion loss is <0.3 dB in 50 Ω systems; above 1 GHz, parasitic resonance begins degrading detector linearity, so system-level validation is recommended for >900 MHz use.

How does the common-anode configuration affect circuit layout compared to common-cathode alternatives?

The common-anode pin (Pin 1) serves as the shared high-side node, allowing both cathodes (Pins 2 and 3) to be independently referenced to ground or different bias points. This simplifies differential detector designs where each cathode feeds separate amplifier inputs, avoids the need for floating cathode connections, and reduces ground loop sensitivity versus common-cathode layouts.

Can BAS70-06FILM replace BAS70-05FILM in a common-cathode design?

No - BAS70-06FILM has a common-anode configuration (anode shared, cathodes separate), while BAS70-05FILM is common-cathode (cathode shared, anodes separate). Swapping them requires rewiring the PCB: the anode terminal must connect to the former cathode net, and both cathodes must route to previously anode-connected nodes, which may compromise RF layout integrity.

Is BAS70-06FILM suitable for automotive under-hood applications?

BAS70-06FILM is not specified as automotive-grade and lacks AEC-Q101 qualification. While its 150 °C T_j(max) exceeds typical under-hood ambient requirements, ST does not guarantee parametric stability or reliability under automotive temperature cycling, humidity, or vibration stress - use only in non-safety-critical consumer or industrial environments unless fully validated per customer requirements.