Diodes Incorporated BZT52C7V5S-7-F

Overview

BZT52C7V5S-7-F from Diodes Incorporated is a surface-mount Zener diode with nominal 7.5 V zener voltage (±0.5 V tolerance), 5 mA test current, 15 Ω dynamic impedance at 5 mA, 0.7 µA maximum reverse leakage at 5.0 V, and ±2.5 mV/°C temperature coefficient. It operates in SOD323 package and serves as precision voltage reference or overvoltage clamp in low-power analog signal conditioning circuits.

For engineers reviewing the BZT52C7V5S-7-F datasheet, BZT52C7V5S-7-F pinout, BZT52C7V5S-7-F application, or BZT52C7V5S-7-F equivalent, key selection criteria include zener voltage stability across temperature, low dynamic impedance for regulation accuracy, SOD323 footprint compatibility with high-density PCB layouts, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This Zener diode uses planar die construction to ensure stable breakdown characteristics and tight voltage tolerance. Its 7.5 V nominal zener voltage is specified at 5 mA test current, with dynamic impedance of 15 Ω and knee impedance of 80 Ω at 1 mA - enabling predictable regulation in low-current bias networks.

The device exhibits a positive temperature coefficient of +2.5 mV/°C, supporting stable reference generation in ambient ranges from –65 °C to +150 °C. Its 200 mW power dissipation rating and 625 °C/W junction-to-ambient thermal resistance require careful PCB pad layout per Diodes' recommended SOD323 footprint to maintain thermal performance.

Key Specifications

Pinout & Package

Package: SOD323 - molded plastic case, cathode band marking, matte tin-plated alloy 42 leadframe, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMSZ5236B-7-F and BZX384-C7V5, BZT52C7V5S-7-F delivers optimal balance of SMT compatibility, automotive-grade reliability, and low-impedance regulation - making it preferred for space-constrained, mission-critical embedded systems requiring consistent 7.5 V reference behavior.

Availability

BZT52C7V5S-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor interfaces, and portable medical diagnostics requiring stable component supply and full traceability.

Supply support for BZT52C7V5S-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 the Americas.

The BZT52 series belongs to Diodes' precision Zener diode product line, engineered for voltage regulation, reference, and overvoltage protection in automotive, industrial, and consumer applications where small size and high reliability are essential.

FAQ

What is the maximum reverse leakage current for BZT52C7V5S-7-F at 5.0 V?

The maximum reverse leakage current is 0.7 µA at VR = 5.0 V and TA = +25 °C, as specified in the Electrical Characteristics table of DS30093 Rev. 20-2. This value ensures minimal loading on low-power bias networks and supports reliable operation in battery-powered systems.

Is BZT52C7V5S-7-F qualified for automotive use?

Yes - BZT52C7V5S-7-F is explicitly qualified to AEC-Q101 standards for high-reliability automotive applications. The "-Q" suffix variant (e.g., BZT52C7V5SQ-7-F) denotes automotive qualification, but the -7-F part number itself is manufactured and tested to the same AEC-Q101 stress requirements per Diodes' documentation.

What is the thermal resistance (R_θJA) of BZT52C7V5S-7-F on a standard FR-4 board?

The junction-to-ambient thermal resistance is 625 °C/W when mounted on an FR-4 printed circuit board using Diodes Incorporated's recommended SOD323 pad layout. This value assumes no additional copper pour or thermal vias; derating is required above +25 °C ambient per the power derating curve in Figure 1.

Does BZT52C7V5S-7-F have halogen-free and RoHS-compliant construction?

Yes - the device uses halogen- and antimony-free "Green" molding compound (<900 ppm Br/Cl, <1000 ppm Sb) and fully RoHS-compliant matte tin plating over alloy 42 leadframe, meeting EU Directive 2011/65/EU and Diodes' internal green product definitions.