Diodes Incorporated BZT52C24S-7-F

Overview

BZT52C24S-7-F from Diodes Incorporated is a surface-mount Zener diode with nominal 24 V zener voltage (22.8–25.6 V range at 5 mA), 200 mW power dissipation, and SOD323 package. It provides precise voltage regulation and overvoltage protection in low-power analog circuits, power supply feedback loops, and reference voltage generation for industrial sensors and automotive control modules.

For engineers reviewing the BZT52C24S-7-F datasheet, BZT52C24S-7-F pinout, BZT52C24S-7-F application, or BZT52C24S-7-F equivalent, key selection criteria include zener voltage tolerance (±5%), dynamic impedance (70 Ω @ 5 mA), temperature coefficient (+16.8 mV/°C), reverse leakage (<0.1 µA @ 18.4 V), and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load and temperature conditions. Its planar die construction ensures consistent breakdown characteristics, while the SOD323 package supports high-density PCB layouts and automated reflow assembly.

The device exhibits a positive temperature coefficient of +16.8 mV/°C above 6 V, enabling predictable drift compensation in voltage references. Thermal resistance is 625 °C/W (junction-to-ambient), requiring derating above +25°C per the published power derating curve.

Key Specifications

Pinout & Package

Package: SOD323 - ultra-small plastic surface-mount case (1.30 mm × 1.70 mm × 0.90 mm), matte tin-plated alloy 42 leadframe, moisture sensitivity level 1, UL 94V-0 rated.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMSZ5242B-7-F and BZX384-C24, BZT52C24S-7-F offers the optimal balance of automotive qualification, compact SOD323 size, and 200 mW capability-making it preferred for space-constrained, mission-critical automotive and industrial systems where reliability and footprint are jointly constrained.

Availability

BZT52C24S-7-F is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, automotive ECU reference design, and USB-C power delivery protection requiring stable component supply and full traceability.

Supply support for BZT52C24S-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 BZT52C series belongs to Diodes' precision Zener diode product line, engineered specifically for voltage regulation, reference, and overvoltage protection in automotive, industrial, and consumer power management systems.

FAQ

What is the maximum reverse voltage (V_R) at which leakage remains below 0.1 µA?

The BZT52C24S-7-F exhibits reverse leakage <0.1 µA at V_R = 18.4 V, as specified in the Electrical Characteristics table. This value is derived from the 70% of nominal zener voltage (0.7 × 24 V), ensuring reliable blocking behavior well below breakdown onset.

Is this part suitable for use in high-humidity environments?

Yes - the SOD323 package has moisture sensitivity level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/60% RH without baking. The molded plastic case meets UL 94V-0 flammability rating and resists environmental ingress under standard industrial operating conditions.

How does the +16.8 mV/°C temperature coefficient affect long-term voltage reference stability?

The +16.8 mV/°C coefficient causes a +1.68 V drift over a 100°C rise (e.g., from 25°C to 125°C). In precision references, this must be compensated via circuit design (e.g., complementary TC components) or limited to narrow ambient ranges where drift stays within system tolerance bands.

Can BZT52C24S-7-F replace BZT52C24-7-F in existing designs?

Yes - BZT52C24S-7-F supersedes BZT52C24-7-F with identical electrical specs and SOD323 mechanical form. The "S" suffix denotes updated green molding compound (halogen/antimony-free), introduced for Date Code V9 (2008 week 33) and later, with no functional or layout impact.