Diodes Incorporated DZ9F5V1S92-7

Overview

DZ9F5V1S92-7 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 5.1 V, maximum zener impedance 80 Ω at 5 mA test current, temperature coefficient +1.2 mV/°C, total capacitance 130 pF at 1 MHz, and power dissipation rating of 200 mW in SOD923 package - used for precision voltage reference and overvoltage protection in low-power sensor signal conditioning circuits.

For engineers reviewing the DZ9F5V1S92-7 datasheet, DZ9F5V1S92-7 pinout, DZ9F5V1S92-7 application, or DZ9F5V1S92-7 equivalent, key selection criteria include zener voltage tolerance (±5%), low dynamic impedance, thermally efficient flat-lead SOD923 package, and compatibility with automated optical inspection due to exposed terminals - critical for space-constrained IoT node designs.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and temperature conditions. Its +1.2 mV/°C temperature coefficient ensures predictable drift behavior near room temperature, and 130 pF junction capacitance supports use in DC-biased reference paths without high-frequency coupling concerns.

The device uses an alloy 42 leadframe with matte tin annealed finish, enabling reliable solderability per MIL-STD-202 Method 208. Thermal resistance of 625 °C/W (junction-to-ambient) reflects its ultra-small SOD923 footprint (1.0 × 0.6 × 0.37 mm), requiring adherence to Diodes' recommended pad layout for rated power handling.

Key Specifications

Pinout & Package

Package: SOD923 (1.0 × 0.6 × 0.37 mm), flat-lead, thermally efficient plastic case with exposed terminals; cathode identified by band marking on top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX584C5V1 and MMSZ5231B, DZ9F5V1S92-7 offers the smallest footprint and lowest capacitance among 5.1 V Zeners, making it optimal for high-density, low-noise reference design - though its lower power rating requires careful thermal layout in sustained 150°C ambient environments.

Availability

DZ9F5V1S92-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C power delivery reference, and low-power wireless node regulator applications requiring stable component supply and full RoHS/Green compliance.

Supply support for DZ9F5V1S92-7 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 and manufacturing operations across Asia and the Americas.

DZ9F5V1S92-7 belongs to the DZ9F series of ultra-miniature Zener diodes engineered specifically for space-constrained, low-power voltage reference and protection functions in portable and sensor-edge electronics.

FAQ

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

The DZ9F5V1S92-7 has a nominal zener voltage of 5.1 V, with guaranteed breakdown occurring between 4.85 V and 5.36 V at 5 mA test current. It is not rated for sustained operation above 5.36 V in reverse bias - exceeding this risks thermal runaway unless current is strictly limited by external series resistance.

Can this part be used in place of a 5.0 V Zener in an existing design?

No - DZ9F5V1S92-7 is specified at 5.1 V nominal with ±5% tolerance (4.85–5.36 V), whereas standard 5.0 V Zeners typically target 4.75–5.25 V. Substituting without circuit revalidation may shift reference accuracy beyond acceptable limits in precision analog systems.

Does this Zener diode require heatsinking on standard FR-4 PCB?

No additional heatsinking is required at ambient temperatures ≤+25°C and power dissipation ≤200 mW. However, above +25°C, derating applies at 2.0 mW/°C - e.g., only 100 mW allowed at +75°C ambient - and Diodes' recommended SOD923 pad layout must be followed to achieve the rated 625 °C/W thermal resistance.

Is the SOD923 package compatible with standard 0201 pick-and-place equipment?

Yes - the SOD923 (1.0 × 0.6 mm) footprint aligns with industry-standard 0201-sized feeders and vision systems. Its flat-lead geometry and exposed terminals support high-yield placement and optical inspection without X-ray, unlike smaller chip-scale packages requiring specialized tooling.