Diodes Incorporated GDZ16LP3-7

Overview

GDZ16LP3-7 from Diodes Incorporated is a 16V ±5% ultra-small leadless Zener diode in X3-DFN0603-2 package (0.6 × 0.3 mm, 0.3 mm profile), rated for 250 mW power dissipation at +25°C, with 11.2 µA max reverse leakage at 11.2 V, and qualified to AEC-Q101 for automotive reliability. It provides precision voltage reference and overvoltage clamping in space-constrained battery-powered sensor nodes.

For engineers reviewing the GDZ16LP3-7 datasheet, GDZ16LP3-7 pinout, GDZ16LP3-7 application, or GDZ16LP3-7 equivalent, key selection criteria include zener voltage tolerance (±5%), low leakage (<0.1 µA typical at VR = 11.2 V), thermal resistance (500 °C/W), AEC-Q101 qualification, and compatibility with automated SMT assembly on FR-4 PCBs.

Technical Context

This device operates as a two-terminal voltage-reference diode, conducting in reverse breakdown at nominal 16.0 V with tight 15.2–16.8 V range. Its low-profile DFN package enables high-density routing and minimizes parasitic inductance in fast transient suppression paths.

Thermal derating follows a linear curve from 250 mW at 25°C to zero at 150°C ambient, with junction-to-ambient thermal resistance fixed at 500 °C/W under standard JEDEC test conditions on FR-4 board with recommended pad layout.

Key Specifications

Pinout & Package

Package: X3-DFN0603-2 - ultra-compact, leadless, halogen-free molded plastic case with matte tin-plated copper leadframe; 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-B16 and MMSZ4687T1G, GDZ16LP3-7 uniquely combines AEC-Q101 qualification, ultra-miniature X3-DFN0603-2 packaging, and sub-0.1 µA leakage-making it optimal for next-generation automotive sensors and compact battery-powered systems where space, reliability, and quiescent current are simultaneously constrained.

Availability

GDZ16LP3-7 is available at Aetrix Electronics and suitable for automotive cabin sensors, industrial wireless transmitters, medical wearable monitors, and smart meter power management requiring stable component supply across extended product lifecycles.

Supply support for GDZ16LP3-7 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 automotive, industrial, computing, and consumer markets with high-reliability components.

GDZ16LP3-7 belongs to the GDZ-LP3 series of ultra-miniature Zener diodes engineered specifically for space-constrained, high-reliability applications demanding AEC-Q101 qualification and ultra-low leakage in battery-operated systems.

FAQ

What is the maximum reverse voltage (V_R) at which GDZ16LP3-7 guarantees ≤0.1 µA leakage?

GDZ16LP3-7 guarantees ≤0.1 µA reverse leakage current at V_R = 11.2 V, which equals 70% of its nominal 16 V zener voltage. This value is specified in the Electrical Characteristics table under "Reverse Current (I_R) @ V_R" for GDZ16LP3, and is measured at T_A = +25°C with short-duration pulse testing to minimize self-heating effects.

Is GDZ16LP3-7 suitable for reflow soldering per JEDEC J-STD-020?

Yes. GDZ16LP3-7 has Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH and requires no baking prior to standard Pb-free reflow (peak 260°C). Its matte tin finish and X3-DFN0603-2 package are fully compatible with industry-standard SMT processes including SPI, placement, and convection reflow.

How does the thermal resistance of GDZ16LP3-7 affect its usable power at 85°C ambient?

With R_θJA = 500 °C/W and T_J(max) = +150°C, the maximum allowable power at T_A = +85°C is calculated as (150 − 85) / 500 = 0.13 W (130 mW). This derating is confirmed by Figure 1 in DS35065 Rev. 19, showing linear reduction from 250 mW at 25°C to 0 W at 150°C ambient.

Does GDZ16LP3-7 have polarity marking, and how is it oriented on the PCB?

Yes. GDZ16LP3-7 uses a cathode bar marking on the top surface of the X3-DFN0603-2 package to identify Pin 1 (cathode). When mounted with the bar aligned toward the positive rail, the anode (Pin 2) connects to ground or lower potential-ensuring correct reverse-bias operation during voltage regulation or clamping.