Diodes Incorporated D3Z7V5BF-7

Overview

D3Z7V5BF-7 from Diodes Incorporated is a precision 7.5 V Zener diode in SOD323F package, rated for 400 mW power dissipation on FR-4 PCB, with ±2.1% zener voltage tolerance (7.28–7.60 V at 5 mA), 10 Ω dynamic impedance at 5 mA, and 0.5 μA reverse leakage at 4 V. It serves as a stable voltage reference or overvoltage clamp in low-power analog signal conditioning circuits.

For engineers reviewing the D3Z7V5BF-7 datasheet, D3Z7V5BF-7 pinout, D3Z7V5BF-7 application, or D3Z7V5BF-7 equivalent, key selection criteria include its tight V_Z tolerance, low Z_ZT, temperature coefficient of +4.0 mV/°C, and suitability for space-constrained automotive and industrial voltage regulation where thermal stability and AEC-Q200-aligned manufacturing are required.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its cathode–anode terminals. Its design targets low-noise, low-drift DC biasing and protection functions in analog front-ends, sensor interfaces, and power supply feedback paths.

The device exhibits a positive temperature coefficient (+4.0 mV/°C) near 7.5 V, enabling predictable drift compensation in multi-device reference networks. Its 10 Ω zener impedance at 5 mA ensures minimal output voltage variation under load current changes up to ±1 mA.

Key Specifications

Pinout & Package

Package: SOD323F - surface-mount plastic package with cathode band marking, 0.01 g mass, UL 94V-0 rating, and moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B7V5 and MMSZ5236B-7-F, D3Z7V5BF-7 delivers superior voltage accuracy and lower impedance in the smallest qualified footprint-making it optimal for next-generation space- and precision-constrained designs where long-term stability and automated assembly yield are critical.

Availability

D3Z7V5BF-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive cabin control modules, portable medical devices, and smart energy metering requiring stable component supply, consistent parametric performance, and traceable green-material compliance.

Supply support for D3Z7V5BF-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 ISO/TS 16949-certified wafer fabs and assembly facilities.

D3Z series Zeners belong to Diodes' precision voltage reference product line, engineered specifically for high-accuracy, low-drift DC biasing and protection in automotive, industrial, and medical applications demanding AEC-Q200-aligned reliability and green material compliance.

FAQ

What is the maximum recommended continuous Zener current for D3Z7V5BF-7?

The device is rated for 400 mW power dissipation on FR-4 PCB. At nominal V_Z = 7.5 V, this corresponds to a maximum continuous Zener current of 53.3 mA. However, the datasheet specifies test conditions at I_ZT = 5 mA, and thermal derating above +25°C reduces practical continuous current to ≤25 mA for reliable long-term operation.

Does D3Z7V5BF-7 meet AEC-Q200 stress testing requirements?

D3Z7V5BF-7 is manufactured in IATF 16949-certified facilities and supports PPAP documentation. While not pre-qualified as AEC-Q200 grade, Diodes offers automotive-grade variants of this series (e.g., D3Z7V5BFQ-7) with full AEC-Q200 qualification. Standard D3Z7V5BF-7 is suitable for non-safety-critical automotive applications where change control and traceability are managed per customer requirements.

How does the +4.0 mV/°C temperature coefficient affect circuit accuracy?

The +4.0 mV/°C coefficient means V_Z increases by 4 mV per degree Celsius rise. Over a –40°C to +125°C range, this produces a total drift of +660 mV (≈+8.8%). In precision references, this is mitigated using complementary TC components or digital compensation; however, for non-critical biasing, it remains within acceptable bounds due to tight initial tolerance.

Can D3Z7V5BF-7 be used in place of a 7.5 V TL431 shunt regulator?

No. The D3Z7V5BF-7 is a passive two-terminal Zener diode with no internal amplification or adjustable output. Unlike the TL431-a three-terminal programmable shunt regulator with 2.5 V reference and high open-loop gain-it cannot regulate against load variations or provide adjustable voltage. It serves only as a fixed-voltage clamp or basic reference, not as an active regulation element.