Diodes Incorporated D3Z2V4BF-7

Overview

D3Z2V4BF-7 from Diodes Incorporated is a precision 2.4 V Zener diode in SOD323F package, rated for 400 mW power dissipation on FR-4 PCB, with ±4.1% tolerance (2.43–2.63 V at 5 mA), 100 Ω dynamic impedance at 5 mA, and -1.6 mV/°C temperature coefficient - used for voltage reference and regulation in low-power analog sensor interfaces and microcontroller reset circuits.

For engineers reviewing the D3Z2V4BF-7 datasheet, D3Z2V4BF-7 pinout, D3Z2V4BF-7 application, or D3Z2V4BF-7 equivalent, key selection criteria include tight V_Z tolerance, low thermal drift, SOD323F footprint compatibility, and automotive-grade process qualification per AEC-Q101 requirements.

Technical Context

This Zener diode operates in reverse breakdown mode with a nominal Zener voltage of 2.4 V at I_ZT = 5 mA, delivering stable reference performance across -65°C to +150°C ambient range. Its 100 Ω Zener impedance at test current ensures minimal output variation under load transients.

The device uses a planar epitaxial construction with cathode band marking, matte tin–annealed copper alloy terminals, and green molding compound compliant with UL 94V-0 and RoHS 3 (2015/863/EU). Moisture sensitivity level is J-STD-020 Level 1.

Key Specifications

Pinout & Package

Package: SOD323F - ultra-small surface-mount plastic case (1.25 mm × 1.70 mm × 0.90 mm), cathode-band marked, moisture-sensitive Level 1, weight ≈ 0.01 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B2V4,115 and MMSZ4678T1G, D3Z2V4BF-7 delivers superior voltage accuracy and lower dynamic impedance in the same compact SOD323F footprint - critical for space-constrained, high-precision analog subsystems.

Availability

D3Z2V4BF-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, microcontroller reset circuitry, low-power IoT node reference, and automotive body control module biasing requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for D3Z2V4BF-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, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.

This device belongs to Diodes' precision Zener diode family engineered for high-accuracy voltage reference and regulation in automotive, industrial, and consumer applications where tight tolerance, low tempco, and AEC-Q101 qualification are mandatory.

FAQ

What is the maximum reverse voltage (V_R) before breakdown for D3Z2V4BF-7?

The device exhibits sharp Zener breakdown at 2.43–2.63 V when reverse-biased at I_ZT = 5 mA. Below 1 V reverse bias, leakage remains ≤50 μA. No separate "maximum reverse voltage" rating is defined - operation is intended within the specified Zener voltage window under controlled current.

Can D3Z2V4BF-7 be used in place of a 2.5 V reference IC in low-current applications?

Yes - at 5 mA bias, its 2.43–2.63 V range overlaps typical 2.5 V IC tolerances. However, it lacks active regulation: output impedance is fixed at 100 Ω, and no current-limiting or thermal shutdown is integrated. External series resistance must be sized to maintain I_Z ≥ 0.5 mA across all operating conditions.

Is D3Z2V4BF-7 qualified for automotive use per AEC-Q101?

Yes - Diodes explicitly states that parts in this series are manufactured in IATF 16949-certified facilities and are PPAP-capable for automotive applications. While the datasheet notes AEC-Q101 qualification is available upon request, the SOD323F packaging, green materials, and -65°C to +150°C rating align with AEC-Q101 stress test requirements.

How does the -1.6 mV/°C temperature coefficient affect system-level accuracy?

Over a 100°C span (e.g., -40°C to +60°C), V_Z shifts by ~160 mV - approximately ±3.3% of nominal 2.4 V. For sub-1% total error budgets, external compensation (e.g., matched NTC thermistor network) or calibration at two temperatures is required. The negative sign indicates voltage decreases as temperature rises.