Diodes Incorporated BZX84C2V7-7

Overview

BZX84C2V7-7 from Diodes Incorporated is a 2.7 V, 350 mW surface-mount Zener diode in SOT23 package, designed for precision voltage regulation and reference applications at low current (5 mA test condition), with ±0.2 V tolerance, 100 Ω dynamic impedance, and -3.5 mV/°C temperature coefficient. It serves as a stable shunt reference in power supply feedback loops, sensor biasing, and overvoltage protection circuits.

For engineers reviewing the BZX84C2V7-7 datasheet, BZX84C2V7-7 pinout, BZX84C2V7-7 application, or BZX84C2V7-7 equivalent, key selection criteria include nominal Zener voltage accuracy, thermal coefficient stability across -65°C to +150°C, low reverse leakage (<20 µA at 1.0 V), SOT23 footprint compatibility, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This Zener diode operates in reverse breakdown mode with a nominal Zener voltage of 2.7 V at 5 mA test current, exhibiting tight voltage tolerance (2.5–2.9 V range) and predictable negative temperature coefficient (-3.5 mV/°C). Its planar die construction ensures stable parametric performance under thermal cycling.

Rated for 350 mW power dissipation at ambient temperature with 357 °C/W junction-to-ambient thermal resistance, it supports continuous operation up to +150°C junction temperature and withstands storage down to -65°C. Reverse leakage remains ≤20 µA at VR = 1.0 V, enabling low-power biasing in battery-sensitive designs.

Key Specifications

Pinout & Package

Package: SOT23 - 3-pin surface-mount plastic case, 2.4 mm × 1.3 mm footprint, 1.1 mm height, matte tin-plated alloy 42 leadframe, moisture sensitivity level 1 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5223BS-7-F and BZX84-C2V7,115, the BZX84C2V7-7 delivers superior thermal margin (350 mW vs. 200 mW), tighter impedance control (100 Ω vs. 150 Ω), and verified automotive qualification-making it optimal for thermally constrained, safety-aware designs requiring long-term parametric stability.

Availability

BZX84C2V7-7 is available at Aetrix Electronics and suitable for automotive cabin electronics, industrial analog I/O modules, USB-C power delivery subsystems, and medical wearable battery management requiring stable component supply with full traceability and lifecycle continuity.

Supply support for BZX84C2V7-7 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 BZX84 series belongs to Diodes' precision Zener diode product line, engineered specifically for voltage regulation, reference, and overvoltage protection in space-constrained, high-reliability applications-including automotive, industrial, and portable electronics.

FAQ

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

The BZX84C2V7-7 exhibits sharp reverse breakdown at its nominal Zener voltage of 2.7 V, with guaranteed operation between 2.5 V and 2.9 V at 5 mA test current. It is not rated for sustained reverse voltage below breakdown; operation below 1.0 V reverse bias yields ≤20 µA leakage, but intentional use below 2.5 V defeats its regulation function.

Is this device suitable for use in a 5 V rail overvoltage clamp?

No-this 2.7 V Zener is unsuitable as a 5 V rail clamp. At 5 V reverse bias, it conducts heavily (well beyond 5 mA), risking thermal runaway unless series current limiting is precisely calculated. For 5 V clamping, use BZX84C5V1-7 or higher-rated devices with appropriate power derating.

Does the "-7" suffix indicate tape-and-reel packaging?

Yes-the "-7" suffix denotes standard SOT23 packaging in 3,000-unit tape-and-reel format per Diodes Incorporated's ordering nomenclature. This matches JEDEC-compliant SOT23 carrier tape specifications and is compatible with all major automated placement equipment.

How does the -3.5 mV/°C temperature coefficient affect circuit accuracy?

The negative temperature coefficient causes the Zener voltage to decrease by 3.5 mV per degree Celsius rise. In a 0–70°C ambient range, this introduces up to 245 mV drift (70 × 3.5 mV), requiring compensation in high-accuracy references-e.g., by pairing with a positive-TC resistor network or using it only in narrow-temperature zones like indoor wearables.