Diodes Incorporated DZ23C3V3-7-F

Overview

DZ23C3V3-7-F from Diodes Incorporated is a dual common-cathode 3.3 V Zener diode pair in SOT23 package, rated for 300 mW total power dissipation, with matched zener voltage tolerance (±5% between diodes), 95 Ω typical zener impedance at 5 mA, and temperature coefficient of –0.055 %/°C. It provides precision voltage reference and overvoltage clamping in compact dual-diode configuration for space-constrained analog monitoring circuits.

For engineers reviewing the DZ23C3V3-7-F datasheet, DZ23C3V3-7-F pinout, DZ23C3V3-7-F application, or DZ23C3V3-7-F equivalent, this part supports dual-rail voltage regulation, bidirectional ESD protection, low-drift reference generation, and matched clamping in automotive body control modules, industrial sensor signal conditioning, and portable power management ICs.

Technical Context

This dual Zener operates in reverse breakdown mode with two anodes sharing one cathode terminal. Each diode exhibits stable 3.1–3.5 V nominal zener voltage at 5 mA test current, with maximum zener impedance of 95 Ω and leakage current ≤0.1 µA at 0.8 V reverse bias.

The device uses silicon planar epitaxial construction, achieves thermal resistance of 417 °C/W on FR4 PCB with recommended pad layout, and maintains operation across –65 °C to +150 °C ambient range - suitable for under-hood automotive and industrial environments where thermal stability and matching are critical.

Key Specifications

Pinout & Package

Package: SOT23 - surface-mount plastic case with matte tin-plated alloy 42 lead frame, UL 94V-0 rated, moisture sensitivity level 1, weight ≈ 0.008 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX79-C3V3 and DZ23C3V3-7, DZ23C3V3-7-F uniquely delivers matched dual-Zener performance in a RoHS 3/halogen-free SOT23 package - essential for space-limited, high-reliability applications requiring guaranteed voltage tracking and environmental compliance.

Availability

DZ23C3V3-7-F is available at Aetrix Electronics and suitable for automotive body control units, industrial sensor signal conditioners, portable medical instruments, and smart home energy monitors requiring stable component supply, matched dual-Zener performance, and full RoHS 3 compliance.

Supply support for DZ23C3V3-7-F 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, industry-qualified components for automotive, industrial, and consumer markets.

The DZ23 series targets compact, matched dual-Zener applications in space-constrained systems - designed specifically for voltage reference, bidirectional clamping, and ESD protection where thermal stability and inter-device matching are critical.

FAQ

What is the maximum continuous reverse current for each Zener in DZ23C3V3-7-F?

At 25 °C ambient, the maximum continuous reverse current per Zener is calculated from the 300 mW total power rating and minimum zener voltage (3.1 V): I_Z(max) ≈ 300 mW / 3.1 V ≈ 97 mA. Derating applies above 25 °C per the Fig. 1 power derating curve - at 85 °C ambient, max current drops to ~65 mA per diode.

Can DZ23C3V3-7-F be used for bidirectional TVS protection?

No - DZ23C3V3-7-F is not rated or characterized as a transient voltage suppressor. Its 300 mW power rating and 95 Ω zener impedance are intended for steady-state regulation and low-energy clamping, not high-peak ESD or surge events. For bidirectional TVS, use dedicated devices like PESD5V0S1BA or SMAJ5.0A.

Is the common cathode pin electrically isolated from the package substrate?

Yes - the SOT23 package uses a molded plastic body with no internal thermal slug or metal paddle connection. The cathode (Pin 2) is fully isolated from the package outline; thermal conduction occurs only through the leads. This isolation supports floating reference configurations in isolated power supplies and differential amplifiers.

Does DZ23C3V3-7-F meet AEC-Q200 stress testing requirements?

No - DZ23C3V3-7-F is a commercial-grade part. For AEC-Q200 qualification, Diodes offers the automotive variant DZ23C3V3Q-7-F, which undergoes extended temperature cycling, humidity testing, and mechanical shock validation per AEC-Q200 Rev D, and is manufactured in IATF 16949-certified facilities.