Diodes Incorporated DZ9F6V8S92-7

Overview

DZ9F6V8S92-7 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 6.8 V, 5 mA test current, 40 Ω maximum zener impedance at 5 mA, ±0.5 V zener voltage tolerance, and 105 pF capacitance at 1 MHz / 0 V. It operates in SOD923 package for precision voltage reference and overvoltage protection in compact power management circuits.

For engineers reviewing the DZ9F6V8S92-7 datasheet, DZ9F6V8S92-7 pinout, DZ9F6V8S92-7 application, or DZ9F6V8S92-7 equivalent, key selection criteria include zener voltage accuracy (6.46–7.14 V), low thermal resistance (625 °C/W), ultra-small footprint (1.0 × 0.6 mm), and guaranteed 0.5 µA max reverse leakage at 3.5 V.

Technical Context

This Zener diode functions as a two-terminal voltage regulator and clamp device, operating in reverse breakdown mode with a positive temperature coefficient of +1.2 mV/°C at 5 mA. Its low 40 Ω dynamic impedance ensures stable regulation under varying load conditions.

The SOD923 package features exposed terminals for visual solder-joint inspection and a thermally efficient flat-lead design. Rated for −65 °C to +150 °C operation, it delivers 200 mW power dissipation on FR-4 PCB with standard pad layout.

Key Specifications

Pinout & Package

Package: SOD923 (1.0 × 0.6 × 0.37 mm), flat-lead, cathode-band marked top-side, matte tin annealed terminals on Alloy 42 leadframe.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B6V8 and MMSZ4688T1G, DZ9F6V8S92-7 offers the smallest footprint (SOD923), lowest zener impedance (40 Ω), and lowest capacitance (105 pF), making it optimal for modern compact, high-precision, and noise-sensitive voltage reference applications.

Availability

DZ9F6V8S92-7 is available at Aetrix Electronics and suitable for USB power delivery protection, IoT sensor biasing, industrial PLC input conditioning, and automotive body control module reference circuits requiring stable component supply and long-term lifecycle support.

Supply support for DZ9F6V8S92-7 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 North America.

The DZ9F series belongs to Diodes' ultra-miniature Zener diode product line, engineered specifically for space-constrained voltage regulation and protection in portable, automotive, and industrial electronics where footprint, thermal performance, and reliability are critical.

FAQ

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

The DZ9F6V8S92-7 has a nominal zener voltage of 6.8 V with a guaranteed range of 6.46 V to 7.14 V at 5 mA test current. Its specified reverse breakdown occurs within this band; it is not rated for stable operation above 7.14 V. Applying voltage beyond this range risks irreversible avalanche degradation or thermal runaway if power dissipation exceeds 200 mW.

Is this part suitable for use in high-frequency signal path clamping?

Yes - with 105 pF capacitance at 1 MHz and 0 V bias, DZ9F6V8S92-7 introduces minimal loading in signal paths up to ~10 MHz. Its low capacitance and fast response make it appropriate for clamping RF-coupled transients on analog sensor lines or low-speed digital I/O, provided forward conduction is avoided via proper polarity orientation.

Does this Zener diode require heatsinking in typical PCB applications?

No - the SOD923 package achieves 625 °C/W junction-to-ambient thermal resistance on standard FR-4 with Diodes' recommended pad layout. At its 200 mW maximum power rating and ambient temperatures ≤85 °C, junction temperature remains below 150 °C without additional copper pour or heatsinking, satisfying typical industrial reliability requirements.

How does the +1.2 mV/°C temperature coefficient affect circuit accuracy?

The +1.2 mV/°C coefficient means the zener voltage increases by 1.2 mV per degree Celsius rise in junction temperature. Over a −40 °C to +85 °C ambient range, this contributes ±150 mV drift (±2.2 % of 6.8 V). For high-accuracy references, this must be compensated via circuit design or paired with temperature-stable components in feedback networks.