Diodes Incorporated DZ9F4V7S92-7

Overview

DZ9F4V7S92-7 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 4.7 V, ±5% tolerance (4.47–4.94 V), 5 mA test current, 800 Ω maximum zener impedance at 5 mA, and 150 pF capacitance at 1 MHz/0 V. It operates in ultra-small SOD923 package (1.0 × 0.6 × 0.37 mm) for precision voltage reference and overvoltage protection in space-constrained power rails.

For engineers reviewing the DZ9F4V7S92-7 datasheet, DZ9F4V7S92-7 pinout, DZ9F4V7S92-7 application, or DZ9F4V7S92-7 equivalent, key selection criteria include zener voltage stability at low current (0.5 mA knee current), negative temperature coefficient (−3.5 to +0.2 mV/°C), thermal resistance (625 °C/W), and RoHS-compliant matte tin finish on alloy 42 leadframe.

Technical Context

This Zener diode functions as a two-terminal voltage regulator in reverse-biased mode, maintaining stable reference voltage across load variations. Its 200 mW power rating and 625 °C/W junction-to-ambient thermal resistance require careful PCB pad layout per Diodes' SOD923 recommendations to avoid derating above +25°C.

The device exhibits a sharp breakdown knee at 0.5 mA, enabling reliable clamping in low-current bias networks. Its 150 pF junction capacitance and −3.5 to +0.2 mV/°C temperature coefficient support stable operation in analog sensing and feedback loops where voltage drift must remain under ±10 mV over −65°C to +150°C.

Key Specifications

Pinout & Package

Package: SOD923 (1.0 × 0.6 × 0.37 mm), flat-lead, exposed terminals, cathode band marking. Complies with JEDEC MO-252.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX584-C4V7 and MMSZ4704T1G, DZ9F4V7S92-7 uniquely balances ultra-small size (SOD923), low capacitance (150 pF), and adequate zener impedance (800 Ω) for space-constrained, noise-sensitive voltage reference designs-making it optimal for portable and automotive electronics where footprint and RF immunity are co-constrained.

Availability

DZ9F4V7S92-7 is available at Aetrix Electronics and suitable for USB power delivery monitoring, industrial sensor signal conditioning, and automotive body control module (BCM) applications requiring stable component supply and consistent parametric performance across production lots.

Supply support for DZ9F4V7S92-7 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, serving industrial, computing, communications, and consumer markets with high-reliability components.

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 IoT edge devices where thermal efficiency and environmental compliance are mandatory.

FAQ

What is the cathode identification method for DZ9F4V7S92-7?

The cathode is marked by a visible band on the top surface of the SOD923 package, aligned with the cathode terminal. This band is easily inspectable without X-ray imaging due to the package's exposed, flat-lead design-enabling rapid visual verification during manual or automated assembly.

Does DZ9F4V7S92-7 require moisture preconditioning before reflow?

No. DZ9F4V7S92-7 has J-STD-020 Level 1 moisture sensitivity, meaning it may be stored indefinitely at ≤30°C/60% RH without baking or dry-pack requirements. It can proceed directly to standard lead-free reflow profiles without moisture-related delamination risk.

How does the temperature coefficient affect regulation accuracy over temperature?

With a specified TC of −3.5 to +0.2 mV/°C, DZ9F4V7S92-7 introduces ≤±7.5 mV drift over a 60°C span (e.g., 25°C to 85°C), translating to ±0.16% error relative to 4.7 V. This is sufficient for non-precision references but not for metrology-grade applications requiring <±0.05% stability.

Can DZ9F4V7S92-7 replace a 5.1 V Zener in a 5 V rail clamp?

No-it is not a drop-in replacement. At 4.7 V nominal, it clamps ~400 mV lower than a 5.1 V Zener, potentially causing premature activation or undershoot in circuits designed for 5.1 V thresholds. Use only where the system's overvoltage trip point is explicitly designed for 4.7 V.