Diodes Incorporated BZT52C24-7-F

Overview

BZT52C24-7-F from Diodes Incorporated is a surface-mount 24 V Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C and 370 mW at TA = +25°C, with ±5% zener voltage tolerance (22.8–25.6 V), 70 Ω maximum zener impedance at 5 mA, and 0.1 µA maximum reverse leakage at 18.4 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning circuits.

For engineers reviewing the BZT52C24-7-F datasheet, BZT52C24-7-F pinout, BZT52C24-7-F application, or BZT52C24-7-F equivalent, key selection criteria include its 24 V nominal breakdown voltage, SOD123 thermal resistance (RθJA = 338 °C/W), cathode-band polarity marking, AEC-Q101 qualification status, and compatibility with automated tape-and-reel assembly.

Technical Context

This Zener diode operates in reverse-biased breakdown mode to maintain stable voltage across load variations, with a temperature coefficient of +16.8 mV/°C - indicating positive drift above 25°C. Its planar die construction ensures consistent breakdown characteristics and long-term stability under repeated thermal cycling.

The device is optimized for medium-current regulation (IZT = 5 mA) and exhibits low dynamic impedance (ZZT ≤ 70 Ω) near nominal current, enabling effective noise suppression in feedback loops and reference buffers. Its SOD123 package supports high-density PCB layouts while meeting UL 94V-0 flammability and J-STD-020 Level 1 moisture sensitivity requirements.

Key Specifications

Pinout & Package

Package: SOD123 - surface-mount plastic case with cathode band marking; dimensions: 2.65 mm × 1.55 mm × 1.05 mm (L × W × H); matte tin-plated alloy 42 leadframe; weight ≈ 0.010 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5249BS-7-F and BZX84-C24, BZT52C24-7-F offers superior thermal performance in compact SOD123 form factor and full AEC-Q101 qualification - making it preferred for automotive and industrial designs requiring robustness and traceable compliance.

Availability

BZT52C24-7-F is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive body control modules, and consumer power adapter feedback circuits requiring stable component supply, RoHS compliance, and AEC-Q101 validation.

Supply support for BZT52C24-7-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.

The BZT52 series belongs to Diodes' general-purpose Zener diode product line, engineered for cost-effective, high-reliability voltage regulation and transient suppression in commercial and automotive applications.

FAQ

What is the maximum reverse voltage (VR) at which BZT52C24-7-F guarantees ≤0.1 µA leakage?

The datasheet specifies 0.1 µA maximum reverse current at VR = 18.4 V. This value is derived from the "Maximum Reverse Current" column in the Electrical Characteristics table for BZT52C24, and reflects the voltage level below which leakage remains within that threshold. Exceeding 18.4 V increases leakage exponentially as the device approaches breakdown.

Is BZT52C24-7-F suitable for use in automotive infotainment head units?

Yes - BZT52C24-7-F is AEC-Q101 qualified and rated for −65 to +150 °C operation, making it suitable for non-safety-critical automotive applications like infotainment power rail clamping and voltage reference. Its SOD123 package withstands thermal cycling typical of dashboard-mounted electronics, and its RoHS/Green compliance meets Tier-1 supplier requirements.

How does the 338 °C/W thermal resistance affect PCB layout for continuous 370 mW operation?

At 370 mW dissipation, a 338 °C/W RθJA yields ~125 °C junction-to-ambient rise above ambient - meaning ambient must stay below +25 °C to keep TJ ≤ +150 °C. To sustain full power, use ≥1-inch² copper pad per JEDEC standard, avoid enclosed enclosures, and consider forced airflow or thermal vias to reduce effective RθJA below 200 °C/W.

Does the "-7-F" suffix indicate tape-and-reel packaging and lead-free finish?

Yes - per Diodes Incorporated's ordering information, "-7-F" denotes commercial-grade SOD123 devices supplied in 3,000-unit tape-and-reel format with fully lead-free, RoHS-compliant matte tin plating. The "F" explicitly confirms halogen- and antimony-free "Green" molding compound per Notes 3 and 4 in the datasheet.