Diodes Incorporated DZ23C4V7-7-F

Overview

DZ23C4V7-7-F from Diodes Incorporated is a dual common-cathode 300mW surface-mount Zener diode with nominal zener voltage 4.7V (4.4–5.0V range), 78Ω dynamic impedance at 5mA, and ±0.015%/°C temperature coefficient. It provides precision voltage reference and overvoltage clamping in compact SOT23 packages for space-constrained power management circuits.

For engineers reviewing the DZ23C4V7-7-F datasheet, DZ23C4V7-7-F pinout, DZ23C4V7-7-F application, or DZ23C4V7-7-F equivalent, this part supports dual-voltage regulation in low-power analog interfaces, ESD-protected I/O rails, and redundant reference paths where matched zener characteristics and tight ΔVZ ≤ 5% between elements are required.

Technical Context

This dual Zener operates in common-cathode configuration: Pins 1 and 2 serve as independent anodes, Pin 3 is the shared cathode. Each element is characterized at IZT = 5.0mA with VZ tolerance ±4.3% (4.4–5.0V) and TC = ±0.015%/°C - among the lowest drift in the DZ23C series for stable biasing across temperature.

Thermal resistance RθJA is 417°C/W on FR4 PCB with recommended pad layout; power derating begins above +25°C ambient, reaching zero dissipation at +150°C. Reverse leakage IR ≤ 0.1µA at VR = 1.0V ensures minimal quiescent current in high-impedance sensing nodes.

Key Specifications

Pinout & Package

Package: SOT23 - molded plastic case, 0.008 g weight, UL 94V-0 flammability rating, matte tin finish terminals, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX79-C4V7 and DZ23C5V1-7-F, DZ23C4V7-7-F uniquely delivers matched dual 4.7V references in SOT23 with ultra-low TC and guaranteed ≤5% inter-element VZ spread - essential for differential sensing and fault-tolerant biasing where single-device alternatives introduce layout complexity or performance trade-offs.

Availability

DZ23C4V7-7-F is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C port overvoltage protection, and low-power IoT node voltage reference requiring stable component supply and JEDEC-qualified reliability.

Supply support for DZ23C4V7-7-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

DZ23C4V7-7-F belongs to the DZ23C dual Zener series, engineered for high-precision, space-constrained voltage regulation and clamping in industrial, computing, and communications equipment where matched dual elements and low-temperature drift are critical.

FAQ

What is the maximum reverse leakage current for DZ23C4V7-7-F at 1.0V?

The datasheet specifies IR ≤ 0.1 µA at VR = 1.0 V and TA = +25°C. This ultra-low leakage supports high-impedance reference nodes and extends battery life in always-on IoT sensors. Leakage remains below 1 µA up to 2.0 V, verified per JEDEC test conditions.

Can DZ23C4V7-7-F be used in automotive applications?

DZ23C4V7-7-F is commercial-grade; for automotive use, Diodes offers the Q-suffix variant DZ23C4V7Q-7-F, qualified to AEC-Q101, PPAP-capable, and manufactured in IATF 16949-certified facilities. The commercial version lacks automotive change control and stress testing documentation.

How is the common-cathode configuration wired in a typical voltage clamp circuit?

In clamp mode, Pin 3 (common cathode) connects to the protected node's target voltage (e.g., 4.7V rail), while Pins 1 and 2 connect to the two input signals needing clamping. Any input exceeding VZ forward-biases its respective anode-to-cathode path, shunting excess current to the rail without affecting the other channel.

What is the thermal derating behavior above 25°C ambient?

Power dissipation linearly derates from 300 mW at +25°C to 0 mW at +150°C, yielding a slope of –2.5 mW/°C. At +85°C ambient, maximum allowable PD is 150 mW. Derating assumes mounting on FR4 with Diodes' recommended pad layout (2.0 mm × 0.8 mm copper area per pad).