BAS70-04,215

BAS70-04 is a quad Schottky barrier diode network in a compact SMD package, used for high-speed RF switching and protection in mixed-signal circuits. It contains four Schottky diodes (often with shared terminals) that offer very low forward voltage, fast switching, and low junction capacitance, enabling efficient operation at RF and high-speed digital levels.
Key features:
- Low forward voltage drop and fast switching
- Low parasitic capacitance
- Small, cost-efficient multi-diode package
Typical applications:
- RF front-ends (switches, detectors, limiter/clamp)
- Protection networks and logic-level OR-ing
- Demodulators and envelope detectors in high-frequency circuits
Choosing BAS70-04:
- Verify the diode configuration (common anode vs common cathode) for your package
- Confirm reverse voltage and forward current ratings per diode from the datasheet
- Check total package capabilities and PCB layout guidance
Note: Specific specs vary by variant and manufacturer; consult the BAS70-04 datasheet for VR, IF, VF, and packaging details.

Direct equivalents: BAS70-04 parts from other manufacturers (Nexperia, Diodes Inc., Vishay, ROHM). Common pin‑compatible substitutes (subject to verifying Vf, Ir, capacitance and package) include BAT54S, BAV99/MMBAV99, and BAS70W/MMBAS70 variants. Always compare datasheets and package/pinout before replacing.

BAS70-04 features (summary):
- Dual Schottky barrier diodes in one SOT-23 package
- Low forward voltage drop and very fast switching
- Suitable for high-speed rectification, clamping, and protection in low-power circuits
- Compact, surface-mount, RoHS-compliant (Pb-free)
- Variety variants (e.g., common cathode or common anode configurations) depending on the exact part
- Designed for small-signal/low-power applications with modest reverse voltage and current ratings (refer to datasheet for exact Vr and Ifs values)

Pin count: 3 pins (SOT-23 package).
Function: BAS70-04 is a dual Schottky barrier diode array with a common cathode (two diodes share the cathode). Typical pinout: pin 1 = anode A, pin 2 = common cathode, pin 3 = anode B. Used for high-speed switching, clamping, or simple ORing.

Manufacturer: Vishay Intertechnology (Vishay Semiconductors).
What kind of company: Vishay is a multinational electronics manufacturer specializing in discrete semiconductors (diodes, transistors, rectifiers), integrated circuits and passive components (resistors, capacitors, inductors). It is a public company that designs and produces components for industrial, automotive, consumer and telecom markets.

BAS70-04 is a dual Schottky barrier diode in SOT-23. Common application areas:
- High-speed switching circuits (digital drivers, sampling)
- RF front-end: detectors, envelope detectors, demodulators
- RF/microwave mixers and detector diodes
- Low-loss rectification in high-frequency, low-voltage power supplies
- Clamping, protection, and waveform shaping in signal paths
Note: exact pinout (common cathode vs. common anode) depends on package variant.

BAS70-04 is in a SOT-23 (3-pin) package (a dual Schottky diode).