Diodes Incorporated DZ23C47-7-F

Overview

DZ23C47-7-F from Diodes Incorporated is a dual common-cathode 300mW surface-mount Zener diode pair with nominal zener voltage 47V (44–50V range), maximum zener impedance 100Ω at 5mA, and temperature coefficient +0.110%/°C. It provides precision voltage reference and overvoltage clamping in compact SOT23 package for space-constrained power supply monitoring circuits.

For engineers reviewing the DZ23C47-7-F datasheet, DZ23C47-7-F pinout, DZ23C47-7-F application, or DZ23C47-7-F equivalent, key selection criteria include matched dual-zener tracking (≤5% ΔV_Z), low thermal resistance (417°C/W), JEDEC-qualified reliability, and RoHS-compliant lead-free construction suitable for automated assembly.

Technical Context

This dual-Zener device integrates two independent zener elements sharing a common cathode terminal, enabling bidirectional voltage regulation or differential reference generation without external node connection. Its matched V_Z tolerance ensures consistent clamping behavior across both diodes under identical bias conditions.

The device operates within -65°C to +150°C ambient range and derates linearly above 25°C per the published power curve. At I_ZT = 5mA, it delivers stable 47V regulation with 100Ω dynamic impedance and exhibits a positive temperature coefficient (+0.110%/°C), making it suitable for temperature-compensated reference designs.

Key Specifications

Pinout & Package

Package: SOT23 - surface-mount plastic package with 3 terminals, 0.008 g mass, UL 94V-0 rating, and matte tin-plated alloy 42 leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX79-C47 and DZ23C43-7-F, DZ23C47-7-F uniquely delivers matched dual 47V regulation in one SOT23, enabling compact bidirectional clamping and eliminating inter-device V_Z drift - essential for high-accuracy reference and protection circuits.

Availability

DZ23C47-7-F is available at Aetrix Electronics and suitable for industrial power supply monitoring, automotive battery voltage clamp, programmable logic controller input protection, and telecom line interface reference requiring stable component supply and JEDEC-qualified reliability.

Supply support for DZ23C47-7-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, computing, and automotive markets with ISO/TS 16949 and IATF 16949 certified facilities.

The DZ23 series targets space-constrained voltage reference and protection applications, delivering matched dual-Zener performance in standard SOT23 packaging for automated manufacturing and thermal-efficient PCB layouts.

FAQ

What is the maximum continuous reverse current the DZ23C47-7-F can handle at 47V?

At 47V reverse bias and 25°C ambient, the device sustains up to 6.4mA continuous current before exceeding its 300mW power limit (P = V × I → 300mW ÷ 47V ≈ 6.4mA). Derating applies above 25°C per the published curve - at 85°C ambient, max current drops to ~4.3mA.

Can DZ23C47-7-F be used as a single-ended 47V zener by leaving one anode unconnected?

Yes - Pin 1 or Pin 3 may be left floating to use only one zener element. However, the unused anode must remain unconnected (not tied to ground or supply) to avoid leakage paths. Performance matches the datasheet's single-diode specifications, including 100Ω Z_ZT and +0.110%/°C TC.

Does the ≤5% ΔV_Z specification apply across temperature or only at 25°C?

The ≤5% ΔV_Z matching is specified at T_A = 25°C and I_ZT = 5mA. Over temperature, tracking degrades due to individual zener TC variations; worst-case mismatch reaches ~7.5% across -40°C to +125°C based on typical TC spread and thermal coupling in the shared die.

Is DZ23C47-7-F qualified for automotive applications per AEC-Q101?

No - DZ23C47-7-F carries commercial qualification. For automotive use, select the Q-suffix variant (e.g., DZ23C47Q-7-F), which undergoes AEC-Q101 stress testing, PPAP documentation, and is manufactured in IATF 16949-certified facilities. The -7-F suffix alone denotes tape-and-reel packaging, not automotive grade.