Diodes Incorporated GDZ5V6LP3-7

Overview

GDZ5V6LP3-7 from Diodes Incorporated is a 5.6 V, 250 mW ultra-small leadless Zener diode in X3-DFN0603-2 package (0.6 × 0.3 mm, 0.3 mm profile), featuring 90 µA max reverse leakage at 1.0 V and AEC-Q101 qualification for automotive-grade reliability. It serves as a precision voltage reference or overvoltage clamp in space-constrained, low-power circuits such as battery management ICs and sensor signal conditioning.

For engineers reviewing the GDZ5V6LP3-7 datasheet, GDZ5V6LP3-7 pinout, GDZ5V6LP3-7 application, or GDZ5V6LP3-7 equivalent, key selection criteria include its 5.31–5.92 V zener voltage tolerance at 5 mA, ultra-low profile for high-density PCB assembly, AEC-Q101 qualification, and suitability for battery-powered systems requiring <100 µA standby leakage.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage regulation with ±5% nominal tolerance (5.31–5.92 V) at I_ZT = 5 mA. Its thermal resistance of 500 °C/W and -55 to +150 °C operating range support use in thermally demanding automotive and industrial environments.

The device uses a cathode-bar marked DFN package with matte tin-plated copper leadframe, enabling reliable solderability per MIL-STD-202, Method 208. Moisture sensitivity level 1 ensures compatibility with standard reflow processes without dry-pack requirements.

Key Specifications

Pinout & Package

Package: X3-DFN0603-2 - ultra-small, leadless, surface-mount plastic package with 0.6 mm length, 0.3 mm width, and 0.3 mm height; cathode identified by bar marking on top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B5V6 and MMSZ5232BS-7-F, GDZ5V6LP3-7 uniquely combines AEC-Q101 qualification, 0.6 × 0.3 mm footprint, and 90 µA leakage-making it optimal for space- and reliability-constrained automotive and portable industrial nodes where both miniaturization and qualification matter.

Availability

GDZ5V6LP3-7 is available at Aetrix Electronics and suitable for automotive body control modules, portable medical sensor nodes, smart energy meter RTC backup circuits, and industrial PLC analog input protection requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for GDZ5V6LP3-7 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, specializing in high-reliability components for automotive, industrial, and consumer markets.

GDZ5V6LP3-7 belongs to the GDZ-LP3 series of ultra-miniature Zener diodes designed specifically for space-constrained, high-reliability applications where AEC-Q101 compliance and low leakage are mandatory.

FAQ

What is the maximum reverse voltage that can be continuously applied without breakdown?

The GDZ5V6LP3-7 has a nominal zener voltage of 5.6 V with a guaranteed range of 5.31–5.92 V at 5 mA test current. Below 5.31 V, it remains in high-impedance reverse-blocking mode with ≤90 µA leakage at 1.0 V. Continuous application of voltage below this minimum ensures no breakdown occurs.

How does the X3-DFN0603-2 package affect thermal performance compared to SOD-323?

The X3-DFN0603-2 package achieves a junction-to-ambient thermal resistance of 500 °C/W on FR-4 PCB, slightly higher than typical SOD-323 devices (~400 °C/W), due to its smaller pad area. However, its ultra-low mass (0.2 mg) enables faster thermal response during short transients, improving peak surge handling despite higher R_θJA.

Is GDZ5V6LP3-7 suitable for use in a 3.3 V system's I/O protection circuit?

No - its 5.6 V zener voltage exceeds typical 3.3 V system I/O absolute maximum ratings (often 4.0 V). Using it for 3.3 V rail clamping risks damaging downstream logic. For 3.3 V systems, GDZ3V3LP3-7 (3.3 V nominal) or GDZ3V6LP3-7 (3.6 V nominal) are appropriate alternatives with verified breakdown margins.

Does the cathode bar marking align with industry-standard polarity conventions?

Yes - the cathode bar on the top surface of the X3-DFN0603-2 package corresponds to Pin 1, matching JEDEC MO-229 and Diodes Incorporated's package drawings. When viewed from the top with the bar on the left, Pin 1 (cathode) is left, Pin 2 (anode) is right - consistent with standard Zener diode polarity orientation used in schematic symbols and layout tools.