Diodes Incorporated DZ23C7V5-7-F

Overview

DZ23C7V5-7-F from Diodes Incorporated is a dual common-cathode 300mW surface-mount Zener diode pair with nominal zener voltage 7.5V (7.0–7.9V range), ±5% matching between diodes, and 7.0Ω typical zener impedance at 5mA. It operates from −65°C to +150°C and is used for precision voltage reference and overvoltage protection in dual-rail power monitoring circuits.

For engineers reviewing the DZ23C7V5-7-F datasheet, DZ23C7V5-7-F pinout, DZ23C7V5-7-F application, or DZ23C7V5-7-F equivalent, key selection criteria include matched zener voltage tolerance, low dynamic impedance, thermal stability (TC = +0.050%/°C), SOT23 package compatibility, and dual-diode configuration for rail-to-rail clamping or differential reference generation.

Technical Context

This device integrates two Zener diodes sharing a common cathode terminal in a single SOT23 package, enabling symmetrical clamping or complementary reference generation without discrete pairing. Its matched voltage drift (≤5% ΔV_Z) and tight TC ensure stable dual-rail regulation under varying temperature conditions.

The 300mW power rating and 417°C/W junction-to-ambient thermal resistance require careful PCB pad layout per Diodes' recommended footprint. Reverse leakage remains ≤0.1µA at 5.0V, supporting low-power biasing and sensing applications where leakage-induced error must be minimized.

Key Specifications

Pinout & Package

Package: SOT23 - surface-mount plastic case with matte tin finish, 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-C7V5, DZ23C7V5-7-F saves board space and guarantees matching; compared with DZ23C7V5-Q-7-F, it offers identical performance at lower cost for non-automotive applications where qualification documentation isn't mandated.

Availability

DZ23C7V5-7-F is available at Aetrix Electronics and suitable for industrial power monitoring, automotive battery supervision, and medical sensor biasing requiring stable component supply, consistent parametric performance, and long-term manufacturing continuity.

Supply support for DZ23C7V5-7-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 components for industrial, automotive, and computing markets.

DZ23C7V5-7-F belongs to the DZ23 series of dual Zener diodes designed specifically for space-constrained, matched-voltage-reference applications in power management and protection circuits.

FAQ

What is the maximum power dissipation for DZ23C7V5-7-F and how does it affect thermal design?

The device has a 300mW absolute maximum power rating at 25°C ambient. Derating begins above 25°C at 0.72mW/°C (based on R_θJA = 417°C/W). To maintain reliability, PCB layout must follow Diodes' recommended SOT23 pad dimensions (2.0mm × 0.8mm land pattern) with adequate copper pour to dissipate heat effectively in enclosed enclosures or high-temperature environments.

How is the "common cathode" configuration used in practical circuits?

In common cathode configuration, Pin 2 serves as the shared reference node. Pins 1 and 3 connect to separate input rails (e.g., +12V and −12V), allowing simultaneous clamping or reference generation relative to the same potential. This eliminates ground loop errors in differential sensing and simplifies PCB routing versus two independent Zeners with separate cathodes.

Does DZ23C7V5-7-F meet automotive qualification standards?

Standard DZ23C7V5-7-F is commercial-grade. The automotive-qualified version is DZ23C7V5-Q-7-F, which is AEC-Q101 certified, manufactured in IATF 16949 facilities, and supports PPAP documentation. Electrical specifications are identical; only qualification status and traceability differ.

What is the significance of the ±5% ΔV_Z specification between the two diodes?

This spec guarantees that the zener voltages of both diodes in the same package deviate by no more than 5% from each other at 5mA test current. It enables precise differential voltage references, matched overvoltage thresholds, and reduced calibration effort in dual-supply systems-critical where symmetry between positive and negative rails directly impacts measurement accuracy.