Diodes Incorporated BZT52HC15WF-7

Overview

BZT52HC15WF-7 from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 15 V (13.8–15.6 V range), 5 mA test current, and 15 Ω dynamic impedance at 5 mA. It delivers 375 mW power dissipation on standard FR-4 PCB and operates across −65 °C to +150 °C. It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning circuits.

For engineers reviewing the BZT52HC15WF-7 datasheet, BZT52HC15WF-7 pinout, BZT52HC15WF-7 application, or BZT52HC15WF-7 equivalent, key selection criteria include its tight 13.8–15.6 V zener tolerance, 9.2–13.0 mV/°C temperature coefficient, 75 pF capacitance at 1 MHz, 0.05 µA reverse leakage at 10.5 V, and SOD123F package compatibility with automated assembly.

Technical Context

This Zener diode operates in reverse breakdown mode with a specified test current of 5 mA and exhibits a positive temperature coefficient (+9.2 to +13.0 mV/°C) above ~10 V, enabling stable voltage regulation under moderate thermal drift. Its 75 pF junction capacitance and low leakage (0.05 µA @ VR = 10.5 V) support use in noise-sensitive biasing and reference networks.

The device uses a planar epitaxial construction in a molded SOD123F package with matte tin–annealed copper alloy leads. Thermal resistance is 330 °C/W on minimal pad layout and improves to 150 °C/W with 1 cm² cathode pad-critical for sustained power handling in compact layouts.

Key Specifications

Pinout & Package

Package: SOD123F (Type B), flat lead, surface-mount plastic case with cathode band marking. Dimensions: 1.80 mm × 2.70 mm × 1.15 mm (L × W × H); weight ≈ 0.015 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5245BS-7-F and 1N4744A, BZT52HC15WF-7 offers optimal balance of SMT compatibility, AEC-Q101 qualification, and 375 mW dissipation in a 1.8 mm × 2.7 mm footprint-making it preferred for automotive and industrial surface-mount designs requiring regulated 15 V references.

Availability

BZT52HC15WF-7 is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial analog input protection, portable instrument reference, and power supply feedback divider applications requiring stable component supply and AEC-Q101 compliance.

Supply support for BZT52HC15WF-7 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 consumer markets.

The BZT52HC series belongs to Diodes' AEC-Q101-qualified Zener diode product line, engineered specifically for precision voltage regulation and transient clamping in harsh-environment electronics where long-term stability and process consistency are critical.

FAQ

What is the maximum reverse voltage this Zener can withstand before breakdown?

The BZT52HC15WF-7 has a nominal zener voltage of 15 V with a guaranteed range of 13.8 V to 15.6 V at 5 mA test current. Breakdown occurs within this range under reverse bias; operation above 15.6 V at rated current may cause excessive power dissipation or thermal runaway unless current is strictly limited.

Is this part suitable for automotive applications?

Yes-BZT52HC15WF-7 is explicitly qualified to AEC-Q101 standards, including stress testing for temperature cycling, humidity, and mechanical shock. Its −65 °C to +150 °C operating range and green molding compound meet automotive under-hood and module-level requirements.

How does the SOD123F package affect thermal performance?

The SOD123F package provides 330 °C/W junction-to-ambient thermal resistance on standard FR-4 pads, rising to 150 °C/W with a 1 cm² cathode copper pad. This dual-rating enables flexible layout-standard routing for low-power use, enhanced copper for sustained 375 mW operation.

What is the significance of the "WF" suffix in the part number?

The "WF" suffix denotes Diodes Incorporated's SOD123F package variant with matte tin–annealed copper alloy leads, halogen/antimony-free green compound, and AEC-Q101 qualification. It distinguishes this version from older SOD-123 or non-AEC variants in the BZT52H series.