Diodes Incorporated BZT52C13-7-F

Overview

BZT52C13-7-F from Diodes Incorporated is a surface-mount 13 V Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C and 370 mW at TA = +25°C, with ±4.8% zener voltage tolerance (12.4–14.1 V), 30 Ω maximum zener impedance at 5 mA, and 0.1 µA maximum reverse leakage at 10.4 V - used for precision voltage regulation and overvoltage protection in low-power DC rails.

For engineers reviewing the BZT52C13-7-F datasheet, BZT52C13-7-F pinout, BZT52C13-7-F application, or BZT52C13-7-F equivalent, this part serves as a stable, AEC-Q101-qualified voltage reference in automotive body electronics, industrial sensor signal conditioning, and consumer power supply feedback loops where tight voltage clamping and low thermal resistance (RθJL = 150 °C/W) are required.

Technical Context

This Zener diode operates in reverse breakdown mode with a nominal test current of 5 mA and exhibits a positive temperature coefficient of +7.0 mV/°C, enabling predictable drift compensation in temperature-sensitive references. Its planar die construction ensures stable long-term voltage characteristics under thermal cycling.

The device features a cathode band polarity marker, matte tin-plated alloy 42 leadframe, and meets J-STD-020 moisture sensitivity Level 1 - making it compatible with standard reflow profiles and high-reliability automated assembly without preconditioning.

Key Specifications

Pinout & Package

Package: SOD123 - surface-mount plastic case with cathode band marking, 0.010 g weight, UL 94V-0 flammability rating, and 1.55 mm × 2.65 mm footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5243B-7-F and BZX84-C13-7-F, BZT52C13-7-F offers superior thermal performance (R_θJL = 150 °C/W vs. >200 °C/W) and higher power handling - making it optimal for thermally demanding automotive and industrial applications where sustained 300–370 mW operation is required.

Availability

BZT52C13-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor signal conditioning, consumer power adapter feedback, and medical diagnostic equipment bias supply requiring stable component supply with full traceability and lifecycle continuity.

Supply support for BZT52C13-7-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 automotive, industrial, and computing markets.

The BZT52 series belongs to Diodes' general-purpose Zener diode product line, designed specifically for cost-effective, high-volume voltage regulation and overvoltage protection in space- and thermal-constrained applications.

FAQ

What is the maximum reverse voltage (V_R) that BZT52C13-7-F can withstand before breakdown?

The BZT52C13-7-F has a nominal zener voltage of 13.0 V with a guaranteed range of 12.4–14.1 V at 5 mA test current. It begins controlled reverse conduction at approximately 12.4 V and maintains stable regulation up to its power limit. The absolute maximum non-destructive reverse voltage is not specified separately - operation beyond the zener range risks thermal runaway if power dissipation exceeds ratings.

Is BZT52C13-7-F suitable for use in automotive applications?

Yes - BZT52C13-7-F is explicitly qualified to AEC-Q101 standards for high-reliability automotive use. Its −65°C to +150°C operating temperature range, green/halogen-free construction, and robust SOD123 package make it appropriate for under-hood and cabin modules including lighting drivers, window lift controllers, and HVAC actuators.

How does the 30 Ω zener impedance affect circuit performance?

A 30 Ω maximum zener impedance means the diode's dynamic resistance introduces ≤150 mV of output voltage change per 5 mA load step - critical for maintaining regulation accuracy in feedback networks and reference supplies. Lower Z_ZT improves rejection of ripple and noise, especially in analog sensor interfaces where PSRR matters.

Can BZT52C13-7-F replace a 12 V Zener in an existing design?

No - BZT52C13-7-F is rated for 13 V nominal (12.4–14.1 V), not 12 V. Substituting it for a true 12 V Zener (e.g., BZT52C12) would raise the clamping threshold by ~1 V, potentially allowing overvoltage stress on downstream components. Always verify voltage tolerance alignment with system safety margins before substitution.