Diodes Incorporated DZ9F15S92-7

Overview

DZ9F15S92-7 from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 15 V, ±5% tolerance (14.25–15.75 V), 5 mA test current, and 42 Ω maximum zener impedance at 5 mA. It operates in ultra-small SOD923 package (1.0 × 0.6 × 0.37 mm), rated for 200 mW power dissipation and −65 °C to +150 °C junction temperature range. It serves as precision voltage reference or overvoltage clamp in space-constrained power management circuits.

For engineers reviewing the DZ9F15S92-7 datasheet, DZ9F15S92-7 pinout, DZ9F15S92-7 application, or DZ9F15S92-7 equivalent, key selection criteria include its low-profile thermally efficient SOD923 footprint, 0.1 µA reverse leakage at 11 V, 9.2 mV/°C temperature coefficient, and compatibility with automated optical solder-joint inspection due to exposed terminals.

Technical Context

This Zener diode uses silicon PN-junction technology optimized for stable reverse-breakdown regulation under low-current bias conditions. Its design targets low-capacitance (70 pF at 0 V) and tight voltage tolerance to support noise-sensitive analog references and compact DC-DC feedback loops.

The device features a negative-to-positive temperature coefficient transition near 5.6 V; at 15 V, it exhibits a positive TC of +9.2 mV/°C, enabling predictable drift compensation in multi-stage voltage monitoring systems where thermal tracking matters.

Key Specifications

Pinout & Package

Package: SOD923 - ultra-compact flat-lead surface-mount package with exposed cathode and anode terminals on underside; 0.2 mm lead width; UL 94V-0 molded plastic body; moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX584-C15 and MMSZ5245B, DZ9F15S92-7 offers the smallest board area and lowest profile while maintaining adequate regulation accuracy for space-constrained, low-power systems-ideal where PCB thickness or component stacking height is constrained.

Availability

DZ9F15S92-7 is available at Aetrix Electronics and suitable for USB Power Delivery clamp circuits, industrial sensor references, automotive body control modules, and medical infusion pump supply monitors requiring stable component supply and long-term lifecycle assurance.

Supply support for DZ9F15S92-7 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.

This device belongs to Diodes' DZ9F series of ultra-miniature Zener diodes, engineered specifically for high-density portable electronics and automotive infotainment systems where minimal footprint and thermal efficiency are primary constraints.

FAQ

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

The DZ9F15S92-7 has a nominal zener voltage of 15 V with a guaranteed breakdown range of 14.25 V to 15.75 V at 5 mA test current. It is not rated for sustained reverse voltage above 15.75 V; operation beyond this risks irreversible avalanche degradation or thermal runaway if power dissipation exceeds 200 mW.

Does this part require special PCB layout considerations for thermal performance?

Yes. The SOD923 package relies on copper pad area for heat dissipation. Diodes Incorporated specifies minimum pad dimensions (0.90 × 0.30 mm) and recommends FR-4 with ≥1 oz copper. Derating begins above +25 °C at 2.0 mW/°C; insufficient copper area reduces effective R_θJA margin and may cause premature failure at >100 mW.

Is the cathode marking visible on the top surface of the SOD923 package?

No. The SOD923 package has no top-side marking; polarity is defined by physical orientation: the cathode is the terminal adjacent to the chamfered corner of the molded body. The datasheet provides top-view diagrams confirming cathode-band location relative to package geometry-not inked marking.

Can this Zener diode be used in place of a TVS for ESD protection?

No. While it clamps above 15 V, its 200 mW power rating and 42 Ω impedance make it unsuitable for ESD transients (e.g., IEC 61000-4-2). TVS diodes offer much higher peak pulse power (≥400 W), lower dynamic impedance (<1 Ω), and faster response (<1 ns). Use only for steady-state voltage regulation or low-energy overvoltage limiting.