Diodes Incorporated BZX84C2V7S-7

Overview

BZX84C2V7S-7 from Diodes Incorporated is a dual 200 mW surface-mount Zener diode in SOT-363 package, rated for nominal 2.7 V zener voltage (2.5–2.9 V range at 5 mA), with 100 Ω max zener impedance at test current and 20 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 BZX84C2V7S-7 datasheet, BZX84C2V7S-7 pinout, BZX84C2V7S-7 application, or BZX84C2V7S-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 device uses planar die construction to ensure stable breakdown characteristics and low temperature coefficient (−3.5 to 0 mV/°C). Its dual-diode configuration shares a common cathode connection in the SOT-363 package, enabling compact dual-rail clamping or bidirectional transient suppression.

Rated for operation from −65 °C to +150 °C, it delivers consistent regulation under pulsed conditions (short-duration test per Note 5) and maintains ≤100 Ω dynamic impedance at 5 mA zener test current - critical for low-noise reference stability in sensor biasing and ADC reference networks.

Key Specifications

Pinout & Package

SOT-363 (SC-70-6) ultra-small surface-mount package with molded plastic case (UL 94V-0), 0.006 g weight, and matte tin-plated Alloy 42 leadframe. Polarity follows standard dual-Zener top view: NC / C1 / A1 / A2 / C2 / NC.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5223BS-7-F and BZX84C2V7LT1G, BZX84C2V7S-7 uniquely provides two independent 2.7 V Zeners in one SOT-363 - reducing component count and PCB area in dual-rail or differential clamping applications without sacrificing voltage accuracy or thermal performance.

Availability

BZX84C2V7S-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C port overvoltage protection, and low-power IoT node voltage monitoring requiring stable component supply and RoHS-compliant sourcing.

Supply support for BZX84C2V7S-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 centers across Asia and manufacturing in China, Taiwan, and the U.S.

The BZX84 series belongs to Diodes' precision Zener reference portfolio, engineered specifically for space-constrained, low-power voltage regulation and clamping in portable, automotive, and industrial electronics.

FAQ

What is the maximum allowable zener test current for BZX84C2V7S-7?

The device is characterized at I_ZT = 5.0 mA per the Electrical Characteristics table, with maximum zener impedance specified at this current. Operation beyond 5 mA is permissible only if power dissipation remains ≤200 mW and junction temperature stays within −65 °C to +150 °C limits - typically requiring derating above 25 °C ambient per the Fig. 1 power derating curve.

Can Pin 2 (C1) and Pin 5 (C2) be connected externally?

Yes - C1 and C2 are separate cathode terminals with no internal connection. They may be tied together to form a dual-cathode configuration for parallel current sharing, or left independent to regulate two distinct voltage rails. Doing so does not violate absolute maximum ratings, provided total power dissipation remains within 200 mW.

Is BZX84C2V7S-7 suitable for ESD protection per IEC 61000-4-2?

No - while it exhibits low clamping voltage, its 200 mW rating and 20 µA leakage at 1 V are insufficient for direct IEC 61000-4-2 Level 4 (15 kV contact) protection. It functions effectively as secondary clamping after dedicated TVS diodes, but must not serve as the primary ESD element in certified designs.

How does the −3.5 to 0 mV/°C temperature coefficient affect long-term reference stability?

This coefficient means the zener voltage decreases by up to 3.5 mV per °C rise near 25 °C - resulting in ~−0.13% drift over a 35 °C span (e.g., 25–60 °C). For applications requiring <±0.05% stability, external temperature compensation or calibration is required; otherwise, it meets typical industrial sensor reference needs without additional circuitry.