Diodes Incorporated DZ9F3V0S92-7

Overview

DZ9F3V0S92-7 from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 3.0 V (±5% tolerance), 200 mW power dissipation, and ultra-small SOD923 package (1.0 × 0.6 × 0.37 mm). It delivers stable voltage regulation in space-constrained power rails and reference circuits, featuring low dynamic impedance (100 Ω @ 5 mA), low reverse leakage (10 µA @ 1 V), and a temperature coefficient of −3.5 mV/°C for predictable thermal behavior in portable battery management systems.

For engineers reviewing the DZ9F3V0S92-7 datasheet, DZ9F3V0S92-7 pinout, DZ9F3V0S92-7 application, or DZ9F3V0S92-7 equivalent, key selection criteria include its 3.0 V zener voltage accuracy, SOD923 thermal performance (625 °C/W R_θJA), cathode-band polarity marking, and suitability for low-power voltage clamping and precision biasing in wearables and IoT sensor nodes.

Technical Context

This Zener diode operates in reverse breakdown to maintain a stable reference voltage across varying load and temperature conditions. Its design targets low-current regulation (I_ZT = 5 mA) with tight voltage tolerance (2.85–3.15 V), minimal capacitance (210 pF @ 1 MHz), and controlled temperature drift (−3.5 mV/°C).

The SOD923 package enables high-density PCB layouts while supporting reliable thermal conduction via exposed terminals and matte tin–annealed Alloy 42 leads. It complies fully with RoHS, halogen-free, and antimony-free "Green" requirements per Diodes Incorporated's specifications.

Key Specifications

Pinout & Package

Package: SOD923 (1.0 × 0.6 × 0.37 mm), flat-lead, thermally efficient, with cathode band marking on top surface. Exposed terminals eliminate need for X-ray inspection of solder joints.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B3V0 and MMSZ3V0T1G, DZ9F3V0S92-7 offers the smallest footprint, lowest leakage, and full halogen/antimony-free compliance-making it optimal for next-gen wearables and certified green electronics programs where size, efficiency, and sustainability are co-prioritized.

Availability

DZ9F3V0S92-7 is available at Aetrix Electronics and suitable for portable battery monitoring, USB-C power delivery reference, IoT sensor node biasing, and industrial PLC input protection requiring stable component supply across high-mix, low-volume production runs.

Supply support for DZ9F3V0S92-7 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 manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.

The DZ9F series belongs to Diodes' ultra-miniature Zener diode product line, engineered specifically for space-constrained, low-power voltage reference and clamping applications in consumer, computing, and industrial end-equipment.

FAQ

What is the maximum reverse voltage this Zener diode can withstand before breakdown?

The DZ9F3V0S92-7 has a nominal zener voltage of 3.0 V with a guaranteed breakdown range of 2.85 V to 3.15 V at 5 mA test current. It is not rated for sustained reverse operation above 3.15 V; exceeding this may cause thermal runaway if power dissipation exceeds 200 mW. The device must be used within its specified zener current window (1–10 mA recommended) to ensure stable regulation and avoid parametric shift.

Can this part be used in place of a 3.3 V Zener diode?

No-DZ9F3V0S92-7 is strictly a 3.0 V zener device with ±5% tolerance (2.85–3.15 V); substituting it for a 3.3 V part would result in ~9% lower reference voltage, potentially causing undervoltage detection errors or incorrect ADC scaling. For 3.3 V regulation, DZ9F3V3S92-7 (3.3 V, 3.14–3.47 V range) is the correct variant in the same SOD923 package.

Does this Zener diode require a series current-limiting resistor in all applications?

Yes-DZ9F3V0S92-7 must always be used with an external series resistor to limit zener current and prevent thermal destruction. For example, with a 5 V supply and target I_Z = 5 mA, a 400 Ω resistor is required (R = (5 V − 3.0 V)/0.005 A). Omitting this resistor risks immediate failure due to uncontrolled power dissipation exceeding 200 mW.

Is the SOD923 package compatible with standard reflow profiles for lead-free assembly?

Yes-the SOD923 package is qualified for lead-free reflow per JEDEC J-STD-020 Level 1 (floor life unlimited at ≤30°C/60% RH), with peak temperatures up to 260°C. Diodes Incorporated specifies compatibility with standard Pb-free reflow profiles (e.g., IPC/JEDEC J-STD-020 Class 3), and the matte tin–annealed terminations meet MIL-STD-202 Method 208 solderability requirements.