Diodes Incorporated BZX84C2V7S-7-F

Overview

BZX84C2V7S-7-F from Diodes Incorporated is a dual 200 mW surface-mount Zener diode in SOT-363 package, rated for nominal zener voltage 2.7 V (min 2.5 V, max 2.9 V) at 5 mA test current, with zener impedance ≤100 Ω at 5 mA and ≤600 Ω at 1 mA, used for precision voltage regulation and reference in low-power analog circuits.

For engineers reviewing the BZX84C2V7S-7-F datasheet, BZX84C2V7S-7-F pinout, BZX84C2V7S-7-F application, or BZX84C2V7S-7-F equivalent, key selection criteria include zener voltage tolerance, dynamic impedance at specified test currents, reverse leakage at VR = 1.0 V, 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 2.7 V zener junctions in a single ultra-small SOT-363 package, enabling compact dual-rail voltage referencing or redundancy without discrete placement. Each element operates with identical electrical specs: 5 mA zener test current, 100 Ω dynamic impedance at IZT, and 20 µA maximum reverse leakage at VR = 1.0 V.

The device uses planar die construction for stable breakdown characteristics and exhibits a temperature coefficient of –3.5 to 0 mV/°C at 5 mA, supporting stable regulation over –65 °C to +150 °C ambient range. Its 625 °C/W junction-to-ambient thermal resistance assumes FR4 board mounting per Diodes Inc. recommended pad layout.

Key Specifications

Pinout & Package

Package: SOT-363 - ultra-small surface-mount plastic package (2.2 mm × 1.35 mm × 0.9 mm), UL 94V-0 rated, moisture sensitivity level 1, lead-free matte tin plating.

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-F uniquely delivers dual 2.7 V references in SOT-363 with matched characteristics, enabling space-constrained dual-rail systems without compromising regulation accuracy or thermal performance.

Availability

BZX84C2V7S-7-F is available at Aetrix Electronics and suitable for low-power voltage reference, ESD protection clamping, and sensor excitation circuits requiring stable component supply across industrial automation, automotive cabin electronics, and portable medical devices.

Supply support for BZX84C2V7S-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, cost-optimized components for industrial, computing, and consumer markets.

The BZX84 series belongs to Diodes Inc.'s precision Zener reference product line, designed specifically for compact, low-power shunt regulation in space-constrained applications where dual-element integration adds functional density without sacrificing specification fidelity.

FAQ

What is the maximum reverse voltage (VR) this Zener can withstand before breakdown?

The BZX84C2V7S-7-F has a nominal zener voltage of 2.7 V, with guaranteed breakdown occurring between 2.5 V and 2.9 V at 5 mA test current. It is not rated for reverse blocking above its zener voltage - operation above 2.9 V initiates controlled conduction, not failure. The absolute maximum reverse voltage is defined by its power limit: at 200 mW, it sustains ≤74 mA at 2.7 V, but derates linearly above 25 °C ambient per the 625 °C/W thermal resistance curve.

Can both Zener elements be used simultaneously in the same circuit?

Yes - the two independent Zener elements (C1/A1 and C2/A2) share no internal connection and can be biased separately. They are commonly used for dual-rail referencing (e.g., ±2.7 V), redundant regulation paths, or differential clamping. The NC pins must remain unconnected, and each cathode-anode pair must be routed with dedicated current-limiting resistors to avoid cross-talk or thermal coupling.

Is this part suitable for use in automotive under-hood environments?

Yes - the BZX84C2V7S-7-F is qualified for operation from –65 °C to +150 °C junction temperature and features RoHS-compliant, halogen-free molding compound (Green policy compliant for date codes UO and newer). Its SOT-363 package meets J-STD-020D moisture sensitivity level 1, eliminating pre-reflow baking. However, system-level validation is required for specific under-hood thermal profiles and vibration exposure.

How does the temperature coefficient affect regulation accuracy over temperature?

The temperature coefficient is specified as –3.5 to 0 mV/°C at 5 mA, meaning the zener voltage decreases by up to 3.5 mV per degree Celsius rise. Over a 100 °C range (e.g., –40 °C to +60 °C), this introduces up to ±350 mV drift - but actual drift is typically lower due to curvature effects. For high-accuracy applications, pairing with a complementary TC component or using closed-loop compensation is recommended.