Diodes Incorporated BZT52C5V1-13-F

Overview

BZT52C5V1-13-F from Diodes Incorporated is a surface-mount 5.1 V Zener diode in SOD-123 package, rated for 500 mW power dissipation at TL = +75°C and 370 mW at TA = +25°C, with 60 Ω maximum Zener impedance at 5 mA test current and ±2.7 mV/°C temperature coefficient - used for precision voltage reference and overvoltage protection in low-power DC rails.

For engineers reviewing the BZT52C5V1-13-F datasheet, BZT52C5V1-13-F pinout, BZT52C5V1-13-F application, or BZT52C5V1-13-F equivalent, key selection criteria include Zener voltage tolerance (4.8–5.4 V), reverse leakage (≤2.0 µA at 1.2 V), thermal resistance (RθJA = 338 °C/W), and AEC-Q101 qualification status for automotive-grade reliability.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable voltage regulation across varying load currents (0–5 mA typical). Its planar die construction ensures consistent breakdown characteristics and low dynamic impedance, critical for noise-sensitive analog references.

The device exhibits a negative temperature coefficient of −2.7 mV/°C near 5.1 V, enabling predictable drift compensation in temperature-stable circuits. It is designed for automated SMT assembly on FR-4 PCBs with 1-inch copper pad layout per JEDEC standards.

Key Specifications

Pinout & Package

Two-terminal device in SOD-123 package: anode and cathode marked by molded cathode band. No internal pins; terminals are solderable matte tin-plated alloy 42 leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5221BS-7-F and BZX84-C5V1, BZT52C5V1-13-F delivers superior thermal performance (RθJA = 338 °C/W), full AEC-Q101 compliance, and higher power capability - making it the preferred choice for automotive and industrial applications demanding long-term reliability under thermal stress.

Availability

BZT52C5V1-13-F is available at Aetrix Electronics and suitable for USB power protection, microcontroller reset generation, industrial sensor excitation, and automotive LED biasing requiring stable component supply and AEC-Q101 traceability.

Supply support for BZT52C5V1-13-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 medium-current voltage regulation and protection in cost-sensitive, high-volume applications including automotive, industrial, and consumer electronics.

FAQ

What is the maximum reverse voltage (V_R) at which leakage current is specified?

The BZT52C5V1-13-F specifies 2.0 µA maximum reverse leakage current at V_R = 1.2 V, per the Electrical Characteristics table. This value is measured under DC conditions at +25°C ambient and reflects the diode's blocking capability well below its 5.1 V Zener threshold - critical for low-power standby circuits where quiescent current must remain sub-µA.

Is this part suitable for use in automotive applications?

Yes - BZT52C5V1-13-F is qualified to AEC-Q101 standards, confirming its reliability for automotive applications including engine control units, body electronics, and infotainment systems. It meets stringent requirements for temperature cycling, humidity resistance, and mechanical shock, and is supplied in 10,000-piece tape-and-reel packaging compatible with high-speed SMT lines.

How does the SOD-123 package affect thermal performance?

The SOD-123 package provides RθJA = 338 °C/W when mounted on an FR-4 PCB with a 1-inch copper pad, per JEDEC JESD51-7. This thermal resistance enables 370 mW dissipation at +25°C ambient, but requires derating to ~250 mW at +85°C. Its low mass (0.010 g) supports rapid thermal response, while the matte tin finish ensures solderability per MIL-STD-202, Method 208.

Can this Zener diode be used in series or parallel configurations?

Series connection is acceptable for higher-voltage references (e.g., two BZT52C5V1-13-F devices yield ~10.2 V), but mismatched temperature coefficients may cause imbalance. Parallel use is not recommended due to unequal current sharing caused by V_Z tolerances (±0.3 V); dedicated multi-Zener arrays or precision references should be used instead for parallel regulation.