Diodes Incorporated BZT52C3V0-7-F

Overview

BZT52C3V0-7-F from Diodes Incorporated is a surface-mount 3.0 V Zener diode in SOD123 package, rated for 500 mW power dissipation at TL = +75°C and 370 mW at TA = +25°C, with ±5% zener voltage tolerance (2.8–3.2 V), 95 Ω max zener impedance at 5 mA, and 10 µA max reverse leakage at 1.0 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning circuits.

For engineers reviewing the BZT52C3V0-7-F datasheet, BZT52C3V0-7-F pinout, BZT52C3V0-7-F application, or BZT52C3V0-7-F equivalent, key selection criteria include zener voltage accuracy, thermal resistance (RθJA = 338 °C/W), junction-to-lead thermal performance (RθJL = 150 °C/W), AEC-Q101 qualification status, and SOD123 footprint compatibility with automated PCB assembly.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under controlled current conditions. Its planar die construction ensures consistent breakdown characteristics and low dynamic impedance, while the SOD123 package enables high-density mounting and reliable thermal conduction via the cathode-band-marked leadframe.

The device is characterized at 5 mA test current (IZT), exhibits a negative temperature coefficient of –3.5 mV/°C, and supports operation from –65 °C to +150 °C. Reverse leakage remains ≤10 µA at VR = 1.0 V, confirming tight regulation capability in low-current bias networks.

Key Specifications

Pinout & Package

Package: SOD123 - surface-mount plastic case with matte tin-plated Alloy 42 leadframe, cathode band marking, UL 94V-0 flammability rating, and moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5222BS-7-F and 1N4723TR, BZT52C3V0-7-F uniquely balances SMD manufacturability, AEC-Q101 qualification, 370 mW ambient-rated power, and tight 2.8–3.2 V tolerance-making it optimal for production-grade automotive and industrial PCBs requiring automated assembly and thermal robustness.

Availability

BZT52C3V0-7-F is available at Aetrix Electronics and suitable for microcontroller reset circuits, ADC input protection, low-power sensor biasing, and automotive LIN bus interfaces requiring stable component supply with full traceability and lifecycle support.

Supply support for BZT52C3V0-7-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 consumer markets.

The BZT52C series belongs to Diodes' general-purpose Zener diode product line, engineered for cost-effective, high-volume voltage regulation and protection in space-constrained surface-mount applications.

FAQ

What is the maximum reverse voltage (VR) at which BZT52C3V0-7-F guarantees ≤10 µA leakage?

The datasheet specifies ≤10 µA reverse current at VR = 1.0 V. This value is measured under standard test conditions (TA = +25°C) and defines the upper limit of leakage before significant conduction begins. At VR = 2.0 V, leakage rises to ≤50 µA, confirming the device remains effectively off below its 3.0 V breakdown threshold.

Can BZT52C3V0-7-F be used in place of a 3.3 V Zener diode in a voltage reference circuit?

No-it is specifically rated for 3.0 V nominal (2.8–3.2 V range). Substituting it for a 3.3 V part introduces a systematic 0.3 V error, potentially causing undervoltage lockout misfires or ADC scaling inaccuracies. Use BZT52C3V3-7-F instead for 3.3 V applications.

Is the SOD123 package of BZT52C3V0-7-F compatible with IPC-7351B standard land patterns?

Yes-the documented SOD123 outline (E = 2.55–2.85 mm, D = 1.40–1.70 mm) aligns with IPC-7351B "SOD123" generic footprint. Recommended pad dimensions (X = 0.90 mm, X1 = 4.05 mm, Y = 0.95 mm) match IPC's density level 'N', supporting reliable reflow yield in high-mix manufacturing.

Does BZT52C3V0-7-F meet automotive qualification requirements?

Yes-the "-7-F" suffix denotes commercial grade, but the base BZT52C3V0 is AEC-Q101 qualified per the datasheet. For automotive production, specify BZT52C3V0Q-7-F (automotive-grade variant with extended testing and traceability), which shares identical electrical specs and SOD123 packaging.