Diodes Incorporated GDZ15LP3-7

Overview

GDZ15LP3-7 from Diodes Incorporated is a 15 V, ±5% tolerance Zener diode in an ultra-small X3-DFN0603-2 (0.6 × 0.3 mm) leadless package, rated for 250 mW power dissipation at +25°C, with 0.1 µA max reverse leakage at 10.5 V and AEC-Q101 qualified 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 GDZ15LP3-7 datasheet, GDZ15LP3-7 pinout, GDZ15LP3-7 application, or GDZ15LP3-7 equivalent, key selection criteria include its 15 V nominal Zener voltage with ±5% tolerance, 0.1 µA reverse leakage at VR = 10.5 V, 250 mW power rating, 500 °C/W thermal resistance, and AEC-Q101 qualification-critical for automotive and portable electronics design.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable voltage regulation across varying load currents, with a typical Zener test current of 5 mA. Its low 0.1 µA reverse leakage at 10.5 V enables minimal quiescent current draw in always-on monitoring circuits.

The device uses a silicon junction structure optimized for tight voltage tolerance and low temperature coefficient, packaged in a halogen- and antimony-free molded plastic case rated UL 94V-0. Moisture sensitivity level is Level 1 per J-STD-020, supporting standard reflow assembly without dry-pack requirements.

Key Specifications

Pinout & Package

Package: X3-DFN0603-2 - ultra-small, leadless, 2-terminal surface-mount package measuring 0.6 mm × 0.3 mm × 0.3 mm, with cathode marked by a bar on top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B15 and MMSZ5245B-TP, GDZ15LP3-7 uniquely combines AEC-Q101 qualification, 0.6 × 0.3 mm footprint, and 0.1 µA leakage-making it optimal for automotive and portable electronics where miniaturization and reliability are co-prioritized.

Availability

GDZ15LP3-7 is available at Aetrix Electronics and suitable for automotive body control modules, portable medical sensor nodes, industrial IoT edge nodes, and smart home smoke detectors requiring stable component supply across extended temperature ranges and high-reliability production cycles.

Supply support for GDZ15LP3-7 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 a focus on high-reliability, energy-efficient solutions.

The GDZ LP3 series belongs to Diodes' ultra-miniature Zener diode product line, designed specifically for space-constrained, low-leakage, and automotive-qualified voltage reference and protection applications.

FAQ

What is the maximum reverse voltage that can be continuously applied to GDZ15LP3-7 without breakdown?

The GDZ15LP3-7 begins controlled Zener breakdown at its nominal 15 V rating, with guaranteed operation between 14.25 V and 15.75 V at 5 mA test current. Applying more than 15.75 V continuously exceeds specification and risks thermal runaway unless power dissipation remains ≤250 mW and junction temperature stays within −55°C to +150°C limits.

Is GDZ15LP3-7 compatible with lead-free reflow soldering profiles?

Yes. GDZ15LP3-7 features matte tin-plated copper leads and is qualified for standard IPC/JEDEC J-STD-020 moisture sensitivity Level 1, allowing use with peak reflow temperatures up to 260°C without preconditioning. Its X3-DFN0603-2 package supports both SnPb and Pb-free solder processes.

How does the 0.1 µA reverse leakage at 10.5 V impact battery life in a 3 V coin-cell application?

At 0.1 µA leakage, GDZ15LP3-7 draws just 0.1 µA even when reverse-biased below its Zener knee-negligible compared to typical coin-cell self-discharge (≈1–2 µA/month). In a CR2032-powered sensor node, this extends usable shelf life by >10 years before leakage depletes capacity.

Can GDZ15LP3-7 replace GDZ15B in an existing design?

No. GDZ15B is a through-hole DO-35 device with different thermal behavior, mounting, and mechanical footprint. GDZ15LP3-7 is surface-mount only, with 0.6 × 0.3 mm dimensions and 500 °C/W RθJA-requiring PCB layout revision, pad redesign, and thermal validation before substitution.