Diodes Incorporated DDZ3V6BSF-7

Overview

DDZ3V6BSF-7 from Diodes Incorporated is a precision 3.60–3.84 V Zener diode in SOD323F package, rated for 500 mW power dissipation on FR-4 PCB, with 130 Ω maximum zener impedance at 20 mA test current and ≤10 µA reverse leakage at 1 V reverse bias. It delivers tight voltage tolerance (±2.8%) for voltage reference and regulation in low-power analog circuits.

For engineers reviewing the DDZ3V6BSF-7 datasheet, DDZ3V6BSF-7 pinout, DDZ3V6BSF-7 application, or DDZ3V6BSF-7 equivalent, this device is selected for stable low-voltage reference generation, overvoltage clamping in sensor interfaces, and precision biasing in battery-powered instrumentation where thermal stability and automated assembly compatibility are critical.

Technical Context

This Zener diode operates in reverse breakdown mode with a nominal zener voltage of 3.72 V (midpoint of 3.60–3.84 V range) at I_ZT = 20 mA. Its temperature coefficient is approximately +2.5 mV/°C near 3.6 V, enabling predictable drift compensation in reference designs.

The device uses a planar epitaxial silicon junction structure optimized for low noise and stable long-term voltage regulation. Its SOD323F package provides low thermal resistance (R_θJA = 250 °C/W) and supports reflow soldering per J-STD-020 Level 1 moisture sensitivity.

Key Specifications

Pinout & Package

Package: SOD323F - ultra-small plastic molded case (2.50 mm × 1.70 mm × 1.25 mm), matte tin-plated copper alloy leadframe, cathode indicated by band marking, compliant with JEDEC MO-213AA.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener reference applications.

Compared with BZX84-C3V6LT1G and MMSZ4685T1G, DDZ3V6BSF-7 offers tighter voltage tolerance, superior thermal performance in miniaturized layouts, and automotive-grade material compliance-making it optimal for next-generation precision analog systems where size, stability, and regulatory alignment are co-prioritized.

Availability

DDZ3V6BSF-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB-C power protection, medical front-end biasing, and smart meter reference scaling requiring stable component supply and long-term manufacturability.

Supply support for DDZ3V6BSF-7 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 semiconductor company specializing in discrete, analog, and mixed-signal devices, with design centers across Asia, Europe, and the US and manufacturing in IATF 16949-certified facilities.

The DDZ series targets high-precision, low-power voltage reference applications in industrial automation, automotive subsystems, and portable instrumentation-designed for tight tolerance, low leakage, and robust SMT manufacturability.

FAQ

What is the maximum continuous reverse current this Zener can handle without degradation?

The DDZ3V6BSF-7 is rated for 20 mA zener test current (I_ZT) and supports continuous reverse current up to 139 mA at 25 °C ambient when mounted on a 10 mm × 10 mm FR-4 pad, based on its 500 mW power rating and 3.72 V nominal V_Z. Derating applies above 25 °C per the published power derating curve.

Does this part meet AEC-Q200 stress testing requirements for passive components?

No-DDZ3V6BSF-7 is not AEC-Q200 qualified. While manufactured in IATF 16949-certified facilities and compliant with RoHS/halogen-free standards, Diodes specifies AEC-Q200 qualification only for designated automotive-grade variants (e.g., DDZxxxASF-13 with "-13" suffix). This part is intended for industrial and commercial applications.

Can this Zener be used in series to generate higher reference voltages?

Yes-multiple DDZ3V6BSF-7 devices may be connected in series to achieve higher reference voltages (e.g., two in series yield ~7.44 V), but total power dissipation, thermal coupling, and individual unit tolerance stacking must be modeled. Parallel connection is not recommended due to mismatch-induced current imbalance.

What is the typical forward voltage at 10 mA, and how does it affect reverse-bias circuit design?

The typical forward voltage is 0.9 V at I_F = 10 mA, per the datasheet's absolute maximum ratings table. This value is relevant only during accidental forward bias or ESD events; in normal reverse-bias regulation operation, forward conduction is avoided entirely by proper circuit polarity orientation.