Diodes Incorporated DZ23C36-7

Overview

DZ23C36-7 from Diodes Incorporated is a 300mW dual Zener diode in common-cathode SOT23 package, with nominal zener voltage 36V (34–38V range), max zener impedance 90Ω at 5mA, tempco +0.090%/°C, and min reverse voltage 27.0V at 0.1µA. It provides precision voltage reference and overvoltage clamping in space-constrained power management circuits.

For engineers reviewing the DZ23C36-7 datasheet, DZ23C36-7 pinout, DZ23C36-7 application, or DZ23C36-7 equivalent, this dual common-cathode Zener supports tight-tolerance dual-rail regulation, low-drift reference generation, and matched-voltage protection in industrial sensor interfaces and DC-DC feedback networks.

Technical Context

This device integrates two monolithic Zener junctions sharing a single cathode terminal, enabling symmetrical bidirectional clamping or independent dual-reference operation. Its ±5% matching between zener voltages within one package ensures consistent voltage tracking across temperature and current variations.

The SOT23 package delivers thermal resistance of 417°C/W to ambient on FR4 PCBs, supporting stable 300mW dissipation up to +125°C ambient. The +0.090%/°C temperature coefficient and 27.0V minimum reverse voltage ensure reliable turn-on behavior under low-leakage conditions.

Key Specifications

Pinout & Package

Package: SOT23 - 3-terminal surface-mount plastic case, 2.90 mm × 2.40 mm × 1.025 mm body, matte tin-plated alloy 42 leads, JEDEC-compliant 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-C36 and DZ23C33-7, DZ23C36-7 uniquely delivers matched 36V dual-zener performance in SOT23, enabling compact, thermally coupled reference and protection functions impossible with single-junction or through-hole alternatives.

Availability

DZ23C36-7 is available at Aetrix Electronics and suitable for industrial power supply feedback, automotive sensor reference, programmable logic controller I/O protection, and test equipment voltage calibration requiring stable component supply and JEDEC-qualified reliability.

Supply support for DZ23C36-7 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, specializing in high-reliability components for industrial, computing, and automotive markets since 1960.

DZ23C36-7 belongs to the DZ23C series of dual Zener diodes designed specifically for space-constrained, matched-voltage reference and bidirectional clamping applications in harsh-environment electronics.

FAQ

What is the maximum continuous zener current for DZ23C36-7 at 25°C ambient?

At 25°C ambient and with recommended FR4 pad layout, the maximum continuous zener current is 8.3 mA - calculated from 300 mW / 36 V. Derating begins above 25°C per the 417°C/W thermal resistance curve; at 70°C ambient, max current drops to ~5.3 mA to maintain junction temperature ≤150°C.

Can DZ23C36-7 be used as a single-ended 36V zener by connecting only one anode?

Yes - Pin 1 or Pin 3 may be used independently with the common cathode (Pin 2) to configure either zener junction as a standalone 34–38V reference. The unused anode must be left floating or tied to a non-interfering potential; reverse-biasing it risks unintended conduction due to internal junction coupling.

Is DZ23C36-7 qualified for automotive applications?

No - the DZ23C36-7 is commercial-grade. For automotive use, Diodes offers the Q-suffix variant DZ23C36Q-7-F, which is AEC-Q101 qualified, PPAP-capable, and manufactured in IATF 16949-certified facilities. The commercial version lacks automotive change control and stress-test validation.

How does the +0.090%/°C temperature coefficient affect long-term reference stability?

The +0.090%/°C coefficient means voltage increases by ~32.4 mV per °C rise at 36V - e.g., +1.17V over a 36°C span. In precision references, this requires compensation via resistor networks or complementary TC components; however, for clamping applications, it ensures monotonic overvoltage response without negative drift-induced failure modes.