Diodes Incorporated BZX84C2V7-7-F

Overview

BZX84C2V7-7-F from Diodes Incorporated is a 2.7 V, 350 mW surface-mount Zener diode in SOT23 package, designed for precision voltage regulation and low-power reference applications at 5 mA test current, with ±0.2 V tolerance (2.5–2.9 V), 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-F datasheet, BZX84C2V7-7-F pinout, BZX84C2V7-7-F application, or BZX84C2V7-7-F equivalent, key selection criteria include nominal Zener voltage accuracy, thermal coefficient stability across -65°C to +150°C, junction-to-ambient thermal resistance (357 °C/W), reverse leakage (≤20 µA at 1.0 V), and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This Zener diode operates in reverse breakdown mode with a nominal regulation voltage of 2.7 V at 5 mA test current, exhibiting tight voltage distribution (±0.2 V) and low dynamic impedance (100 Ω at 1 kHz). Its negative temperature coefficient (-3.5 mV/°C) enables predictable drift compensation in temperature-sensitive references.

The device uses planar die construction in a molded plastic SOT23 case rated UL 94V-0, with matte tin-plated Alloy 42 leads, moisture sensitivity level 1, and full RoHS/Halogen-free compliance. It delivers 350 mW power dissipation under ambient-temperature terminal conditions.

Key Specifications

Pinout & Package

Package: SOT23 - 3-terminal surface-mount plastic case, 2.4 mm × 1.3 mm × 1.0 mm, UL 94V-0 rated, matte tin finish on Alloy 42 leadframe.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5222BS-7-F and BZX84-C2V7,115, the BZX84C2V7-7-F offers superior thermal performance (357 °C/W vs. ≥417 °C/W), guaranteed automotive qualification, and tighter voltage tolerance-making it optimal for safety-aware, high-reliability embedded systems requiring stable 2.7 V reference behavior across temperature and lifetime.

Availability

BZX84C2V7-7-F is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor signal conditioning, and portable medical device power management requiring stable component supply and full traceability.

Supply support for BZX84C2V7-7-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 computing markets.

The BZX84 series belongs to Diodes' precision Zener portfolio, engineered specifically for stable voltage reference and overvoltage protection in space-constrained, thermally demanding applications.

FAQ

What is the maximum reverse current at 1.0 V for BZX84C2V7-7-F?

The maximum reverse current (I_R) is 20 µA at V_R = 1.0 V and T_A = 25°C, as specified in the Electrical Characteristics table. This low leakage ensures minimal power loss in always-on reference circuits and supports accurate low-current sensing in battery-operated devices.

Is BZX84C2V7-7-F suitable for automotive applications?

Yes-BZX84C2V7-7-F is qualified to AEC-Q101 standards, confirming its suitability for automotive applications including engine control units, infotainment power supplies, and ADAS sensor interfaces where extended temperature operation (-65°C to +150°C) and long-term reliability are mandatory.

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

The negative temperature coefficient means the Zener voltage decreases by 3.5 mV per degree Celsius rise. Designers use this predictable drift to compensate for other positive-TC components (e.g., op-amp offsets) or implement software-based calibration in temperature-critical references like RTD bridges.

What is the thermal resistance junction-to-ambient for BZX84C2V7-7-F?

The thermal resistance junction-to-ambient (R_θJA) is 357 °C/W under conditions where terminals are held at ambient temperature (Note 7). This value assumes no heatsinking and applies to standard FR-4 PCB layouts with recommended pad dimensions-critical for calculating safe operating area in continuous regulation.