Diodes Incorporated DDZ5V6ASFQ-7

Overview

DDZ5V6ASFQ-7 from Diodes Incorporated is a precision 5.6 V Zener diode in SOD323F package, rated for 500 mW power dissipation on FR-4 PCB, with tight ±2.5% Zener voltage tolerance (5.28–5.55 V at 20 mA), 80 Ω dynamic impedance at 1 kHz, and AEC-Q101 qualification for automotive applications.

For engineers reviewing the DDZ5V6ASFQ-7 datasheet, DDZ5V6ASFQ-7 pinout, DDZ5V6ASFQ-7 application, or DDZ5V6ASFQ-7 equivalent, this device serves as a stable voltage reference or overvoltage clamp in low-power automotive sensor interfaces, power supply feedback loops, and ESD-protected I/O conditioning circuits where thermal stability and RoHS-compliant packaging are required.

Technical Context

This Zener diode operates in reverse breakdown to maintain a stable reference voltage under controlled current conditions. Its 80 Ω Zener impedance at 20 mA and 1 kHz ensures minimal output variation with load transients, while its -65°C to +150°C operating range supports under-hood automotive environments.

The SOD323F package delivers low thermal resistance (250°C/W junction-to-ambient on FR-4) and enables high-density automated placement. Cathode band marking and matte tin–annealed terminals ensure reliable solderability per MIL-STD-202, Method 208.

Key Specifications

Pinout & Package

SOD323F surface-mount package: molded green plastic case (UL 94V-0), cathode indicated by band marking, matte tin–annealed copper alloy leadframe, moisture sensitivity level 1 per J-STD-020, weight ≈ 0.004 g.

Key Features

Applications

Availability

DDZ5V6ASFQ-7 is available at Aetrix Electronics and suitable for automotive sensor interfaces, low-power voltage references, and ESD-protected I/O conditioning requiring stable component supply and AEC-Q101 compliance.

Supply support for DDZ5V6ASFQ-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.

This device belongs to Diodes' AEC-Q101-qualified Zener diode product line, engineered specifically for precision voltage regulation and transient suppression in harsh-environment automotive electronics.

FAQ

What is the maximum continuous Zener current for DDZ5V6ASFQ-7 at 25°C?

The device is rated for 500 mW power dissipation at 25°C ambient. With a nominal Zener voltage of 5.6 V, the maximum continuous Zener current is approximately 89 mA (500 mW ÷ 5.6 V). Derating applies above 25°C per the published power derating curve (250°C/W).

Is DDZ5V6ASFQ-7 suitable for use in non-automotive industrial applications?

Yes - while AEC-Q101 qualified and marked "Automotive" in ordering information, its electrical specs, temperature range (-65°C to +150°C), and RoHS/Green compliance make it fully suitable for industrial PLC I/O modules, test equipment references, and telecom power supervision where high reliability and low leakage are critical.

How does the SOD323F package compare to SOD-123 in thermal performance?

DDZ5V6ASFQ-7 in SOD323F has a specified R_θJA of 250°C/W on FR-4 (10 mm × 10 mm pad). SOD-123 packages typically exhibit ~200–220°C/W under identical conditions due to larger copper exposure. The SOD323F's smaller size trades some thermal margin for board area savings and higher assembly density.

Can DDZ5V6ASFQ-7 replace a 5.1 V Zener in an existing design?

No - its 5.28–5.55 V Zener range is incompatible with 5.1 V circuits. Substituting would shift reference or clamp thresholds outside specification. For 5.1 V alternatives, consider Diodes' DDZ5V1ASFQ-7 (5.0–5.2 V range), which shares identical SOD323F packaging and AEC-Q101 qualification.