Diodes Incorporated BZX84C3V0W-7-F

Overview

BZX84C3V0W-7-F from Diodes Incorporated is a 3.0 V, 200 mW surface-mount Zener diode in SOT-323 package, with nominal zener voltage 3.0 V (min 2.8 V, max 3.2 V), test current 5.0 mA, and zener impedance 95 Ω at I_ZT; used for precision voltage regulation and reference in low-power analog circuits.

For engineers reviewing the BZX84C3V0W-7-F datasheet, BZX84C3V0W-7-F pinout, BZX84C3V0W-7-F application, or BZX84C3V0W-7-F equivalent, key selection criteria include zener voltage tolerance (±6.7%), thermal resistance (625 K/W), reverse leakage (20 µA @ 1.0 V), and RoHS-compliant green molding compound construction.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load or supply conditions. It features planar die construction for consistent parametric performance and low temperature coefficient (–3.5 to 0 mV/°C) over 25°C.

Rated for 200 mW power dissipation on FR4 PCB with recommended pad layout, it supports ambient operating temperatures from –65°C to +125°C and exhibits typical capacitance of ~100 pF at 1 V reverse bias.

Key Specifications

Pinout & Package

Package: SOT-323 - ultra-small surface-mount plastic case (2.0 × 1.25 × 0.9 mm), lead-free matte tin plating, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5226BS-7-F and 1SMA5913BT3G, BZX84C3V0W-7-F offers optimal balance of size, cost, and performance for low-power (<5 mA) reference and clamp roles in dense consumer and industrial PCBs.

Availability

BZX84C3V0W-7-F is available at Aetrix Electronics and suitable for voltage reference design, ESD protection circuits, and signal conditioning modules requiring stable component supply and full RoHS compliance.

Supply support for BZX84C3V0W-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, headquartered in Plano, Texas, serving industrial, computing, communications, and consumer markets.

BZX84 series belongs to Diodes' standard Zener diode product line, engineered for cost-sensitive, high-volume applications demanding consistent voltage regulation in miniature SMT packages.

FAQ

What is the maximum reverse voltage before breakdown for BZX84C3V0W-7-F?

The device begins controlled zener breakdown at 2.8 V (minimum specified V_Z) and maintains regulation up to 3.2 V (maximum V_Z) at 5.0 mA test current. Below 2.8 V, reverse leakage remains ≤20 µA at 1.0 V - no hard "breakdown" occurs outside this band.

Can BZX84C3V0W-7-F be used in place of a 3.3 V Zener diode?

No - its nominal 3.0 V rating (2.8–3.2 V range) is outside the typical 3.3 V Zener tolerance (3.1–3.5 V). Substituting risks undershoot in 3.3 V logic interface or reference applications; use BZX84C3V3W-7-F instead.

Is the SOT-323 package of BZX84C3V0W-7-F compatible with standard reflow profiles?

Yes - the device is qualified for lead-free reflow per J-STD-020D Level 1 moisture sensitivity, with peak temperature up to 260°C. Its matte tin finish ensures reliable wetting and joint integrity under standard Pb-free thermal profiles.

Does BZX84C3V0W-7-F require a series current-limiting resistor in all applications?

Yes - as a shunt regulator, it must be paired with a series resistor to limit current to ≤5.0 mA for stable operation and avoid exceeding 200 mW dissipation. Resistor value is calculated as (V_IN – 3.0 V)/I_Z, where I_Z is chosen within 1–5 mA for optimal impedance and noise performance.