Diodes Incorporated BZX84C7V5S-7

Overview

BZX84C7V5S-7 from Diodes Incorporated is a dual 200 mW surface-mount Zener diode in SOT-363 package, rated for nominal 7.5 V zener voltage (7.0–7.9 V range at 5 mA test current), with 15 Ω max zener impedance at I_ZT and 1.0 µA max reverse leakage at 5.0 V. It serves as a precision voltage reference or overvoltage clamp in low-power analog signal conditioning circuits.

For engineers reviewing the BZX84C7V5S-7 datasheet, BZX84C7V5S-7 pinout, BZX84C7V5S-7 application, or BZX84C7V5S-7 equivalent, key selection criteria include zener voltage tolerance, dynamic impedance at operating current, thermal resistance (625 °C/W), and SOT-363 footprint compatibility with high-density PCB layouts.

Technical Context

This dual-element Zener diode integrates two independent 7.5 V zener junctions in a single SOT-363 package, sharing no internal connection-each anode/cathode pair operates independently. It uses planar die construction for stable breakdown characteristics and supports operation from −65 °C to +150 °C.

Thermal derating begins above 25 °C ambient, with full 200 mW dissipation only at T_A ≤ 25 °C; power drops linearly to zero at ~150 °C. Zener voltage exhibits a positive temperature coefficient of +2.5 to +5.3 mV/°C at 5 mA, enabling predictable drift compensation in bias networks.

Key Specifications

Pinout & Package

SOT-363 package with six terminals: two isolated Zener diode structures (C1/A1 and C2/A2), plus two no-connect (NC) pins. Pin 1 (C1) and Pin 2 (A1) form first Zener; Pin 5 (C2) and Pin 6 (A2) form second Zener. Pins 3 and 4 are NC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5236BS-7-F and BZX84C7V5LT1G, BZX84C7V5S-7 uniquely delivers two matched 7.5 V Zeners in one SOT-363, reducing component count and layout complexity for dual-reference or redundant protection schemes-without sacrificing zener impedance or leakage performance.

Availability

BZX84C7V5S-7 is available at Aetrix Electronics and suitable for power supply monitoring, ADC reference stabilization, overvoltage clamp, and signal level translation requiring stable component supply and RoHS-compliant sourcing.

Supply support for BZX84C7V5S-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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The BZX84C series belongs to Diodes' standard Zener diode product line, engineered for cost-sensitive, high-volume applications demanding tight voltage tolerance, low leakage, and reliable surface-mount packaging in consumer, industrial, and computing systems.

FAQ

What is the maximum continuous reverse current the BZX84C7V5S-7 can handle before degradation?

The device is rated for 200 mW total package dissipation at 25 °C ambient. At its 7.5 V zener voltage, this corresponds to a maximum average reverse current of approximately 26.7 mA. Exceeding this value without thermal derating risks exceeding junction temperature limits and long-term parameter drift.

Can both Zener diodes in the BZX84C7V5S-7 be used simultaneously without interaction?

Yes - the two Zener elements are fully isolated within the SOT-363 package, with no internal electrical connection between them. Each has independent cathode/anode terminals (C1/A1 and C2/A2), allowing simultaneous use in separate circuits without crosstalk or shared thermal coupling beyond package-level conduction.

Is the BZX84C7V5S-7 suitable for use in automotive applications?

It meets AEC-Q200 stress test requirements for passive components when qualified per Diodes' automotive-grade variants (e.g., BZX84C7V5S-7-TP). The standard BZX84C7V5S-7 is rated for −65 °C to +150 °C operating temperature and RoHS compliance, but automotive deployment requires verification of qualification status and PPAP documentation from Diodes Incorporated.

How does the temperature coefficient affect regulation accuracy over −40 °C to +85 °C?

With a specified +2.5 to +5.3 mV/°C coefficient at 5 mA, the zener voltage shifts +0.175 V to +0.371 V across a 70 °C span. For applications requiring <1% accuracy, this drift must be compensated via circuit design (e.g., complementary TC components) or calibrated out in firmware during system initialization.