Diodes Incorporated DZ23C4V7-7

Overview

DZ23C4V7-7 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 maximum zener impedance at 5mA, and ±0.015%/°C temperature coefficient - used for precision voltage reference and overvoltage clamping in low-power analog signal conditioning circuits.

For engineers reviewing the DZ23C4V7-7 datasheet, DZ23C4V7-7 pinout, DZ23C4V7-7 application, or DZ23C4V7-7 equivalent, key selection criteria include matched dual-zener tracking (≤5% V_Z mismatch), SOT23 package compatibility with automated assembly, JEDEC-qualified reliability, and tight thermal coefficient for stable biasing across -65°C to +150°C operating range.

Technical Context

This dual-Zener device integrates two independent zener elements sharing a common cathode terminal, enabling symmetrical clamping or complementary reference generation in single-supply systems. Its 300mW power rating and 417°C/W junction-to-ambient thermal resistance require careful PCB pad layout per Diodes' recommended footprint for thermal derating.

The device operates with test current I_ZT = 5.0mA and knee current I_ZK = 1.0mA, exhibiting low dynamic impedance (78Ω) and minimal voltage drift (±0.015%/°C), making it suitable for applications demanding stable regulation under varying ambient conditions without active compensation.

Key Specifications

Pinout & Package

Package: SOT23 - 3-pin surface-mount plastic package with matte tin-plated alloy 42 lead frame, UL 94V-0 rated molding compound, and 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 DZ23C4V7-7-F, the DZ23C4V7-7 offers integrated dual-Zener functionality in SOT23, eliminating component count and layout complexity while maintaining tight V_Z matching and industrial temperature capability - critical for miniaturized, high-reliability designs.

Availability

DZ23C4V7-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB port protection, low-power IoT reference, and automotive cabin control applications requiring stable component supply and long-term lifecycle support.

Supply support for DZ23C4V7-7 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 North America.

The DZ23 series belongs to Diodes' precision Zener diode product line, engineered for high-matching accuracy, low-temperature drift, and automated assembly compatibility in space-constrained industrial and automotive systems.

FAQ

What is the maximum continuous power dissipation for DZ23C4V7-7 on a standard FR4 PCB?

The DZ23C4V7-7 has a rated power dissipation of 300mW when mounted on an FR4 printed circuit board using Diodes Incorporated's recommended pad layout. Derating begins above 25°C ambient, following the published power derating curve - at 70°C ambient, maximum allowable power drops to approximately 180mW due to its 417°C/W junction-to-ambient thermal resistance.

How is the common-cathode configuration implemented in the SOT23 package?

In the SOT23 package, Pin 2 is the shared cathode terminal, while Pins 1 and 3 serve as the anodes of the two independent zener elements. This physical layout enables direct connection of both anodes to separate circuit nodes while referencing clamping or regulation to a single cathode point - eliminating need for external wiring or parallel device placement.

Does DZ23C4V7-7 meet automotive qualification standards?

The base DZ23C4V7-7 part is qualified to JEDEC high-reliability standards and supports automotive use via the Q-suffix variant (e.g., DZ23C4V7Q-7-F), which is AEC-Q200 qualified, PPAP-capable, and manufactured in IATF 16949 certified facilities. The non-Q version is suitable for non-safety-critical automotive cabin applications where full AEC qualification is not mandated.

What is the significance of the "-7" suffix in the part number DZ23C4V7-7?

Per Diodes Incorporated's ordering nomenclature, the "-7" suffix denotes tape-and-reel packaging in SOT23 format, with 3000 units per reel. It also indicates commercial-grade qualification and excludes automotive-specific change control or AEC-Q200 certification - distinguishing it from the "Q-7" automotive variant. The "-F" suffix (not present here) would indicate fully RoHS-compliant "Green" finish.