Diodes Incorporated PD3Z284C5V6-7

Overview

PD3Z284C5V6-7 from Diodes Incorporated is a 0.5W surface-mount Zener diode with nominal zener voltage 5.6 V (min 5.2 V, max 6.0 V), zener test current 5 mA, dynamic impedance 40 Ω at 5 mA, and maximum reverse leakage current 1 µA at 2.0 V. It operates across –65 °C to +150 °C and is qualified to AEC-Q101 for automotive-grade reliability in voltage regulation and overvoltage protection circuits.

For engineers reviewing the PD3Z284C5V6-7 datasheet, PD3Z284C5V6-7 pinout, PD3Z284C5V6-7 application, or PD3Z284C5V6-7 equivalent, key selection criteria include zener voltage tolerance (±3.6%), low dynamic impedance for stable reference performance, thermal resistance (250 °C/W), PowerDI323 package compatibility with high-density PCB layouts, and AEC-Q101 qualification for under-hood automotive use.

Technical Context

This Zener diode uses planar die construction to ensure consistent breakdown characteristics and low temperature coefficient (–2.0 mV/°C) at 5 mA, enabling stable voltage reference in temperature-varying environments. Its ultra-small PowerDI323 package supports high board density while maintaining 500 mW power dissipation capability under defined PCB layout conditions.

The device exhibits low reverse leakage (1 µA @ VR = 2.0 V) and tight zener voltage distribution (5.2–6.0 V), making it suitable for precision clamping and biasing where predictable turn-on behavior is required. It is not recommended for new designs per manufacturer guidance; migration to the D3ZxxBF series is advised for long-term supply continuity.

Key Specifications

Pinout & Package

Package: PowerDI323 - ultra-compact surface-mount plastic package (2.50 × 1.90 × 0.13 mm), RoHS-compliant, matte tin-plated copper leadframe, cathode band polarity marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with PD3Z284C5V6-7, D3Z5V6BF-7 offers superior power handling and tighter impedance for next-gen designs, while BZX384-C5V6,115 trades AEC-Q101 compliance and precision for broader commercial availability and lower unit cost.

Availability

PD3Z284C5V6-7 is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor interfaces, and medical diagnostic equipment requiring stable component supply and traceable sourcing.

Supply support for PD3Z284C5V6-7 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 computing markets.

PD3Z284C5V6-7 belongs to the PD3Z284C series of AEC-Q101-qualified Zener diodes designed specifically for voltage regulation and transient suppression in harsh-environment automotive electronics.

FAQ

Is PD3Z284C5V6-7 suitable for new automotive designs?

No - Diodes Incorporated explicitly marks this part as "NOT RECOMMENDED FOR NEW DESIGNS" and recommends migration to the D3ZxxBF series. The D3Z5V6BF-7 offers identical zener voltage with improved power rating (1 W), lower impedance (25 Ω), and continued long-term supply support for automotive programs.

What is the thermal resistance of PD3Z284C5V6-7, and how does it affect PCB layout?

The junction-to-ambient thermal resistance is 250 °C/W when mounted on a polyimide PCB using the recommended pad layout per AP02001. To maintain safe junction temperature, designers must follow the specified 2.50 × 1.90 mm footprint with thermal relief traces and avoid excessive copper isolation around the PowerDI323 terminals.

How does the –2.0 mV/°C temperature coefficient impact voltage reference accuracy?

At 5 mA test current, the zener voltage decreases by 2.0 mV per degree Celsius rise. Over a –40 °C to +125 °C range (165 °C delta), this results in ~330 mV total drift - approximately ±3% of 5.6 V. For high-accuracy references, this drift must be compensated via circuit design or calibration.

Can PD3Z284C5V6-7 replace a 5.1 V Zener in an existing circuit?

No - its nominal 5.6 V zener voltage differs significantly from 5.1 V devices like PD3Z284C5V1-7 (5.1 V, ±3.9% tolerance). Substitution would raise clamping voltage by 0.5 V, potentially causing undervoltage lockout or incorrect biasing. Always verify system-level voltage margins before replacement.