Diodes Incorporated BZX84C16W-7

Overview

BZX84C16W-7 from Diodes Incorporated is a 16 V, 200 mW surface-mount Zener diode in SOT-323 package, with nominal zener voltage 16 V (min 15.3 V, max 17.1 V), zener test current 5.0 mA, and maximum zener impedance 40 Ω at I_ZT; used for precision voltage regulation and reference in low-power analog circuits.

For engineers reviewing the BZX84C16W-7 datasheet, BZX84C16W-7 pinout, BZX84C16W-7 application, or BZX84C16W-7 equivalent, key selection criteria include zener voltage tolerance, dynamic impedance at 5 mA, power derating above 25°C, reverse leakage at 11.2 V, and thermal resistance of 625 K/W on FR4 board.

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 is rated for continuous operation from −65°C to +125°C.

Its ultra-small SOT-323 package supports high-density PCB layouts while delivering 200 mW dissipation with defined thermal resistance (625 K/W) when mounted per recommended pad layout. The device exhibits a positive temperature coefficient (+10.4 to +14.0 mV/°C) at 5 mA test current.

Key Specifications

Pinout & Package

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

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5245BS-7-F and BZX384-C16,115, the BZX84C16W-7 offers the smallest footprint (SOT-323) and lowest leakage (0.1 µA), making it optimal for ultra-compact, battery-sensitive designs where thermal headroom is adequate.

Availability

BZX84C16W-7 is available at Aetrix Electronics and suitable for portable sensor biasing, low-power ADC reference, and microcontroller reset circuits requiring stable component supply and full RoHS compliance.

Supply support for BZX84C16W-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 and manufacturing operations across Asia and the Americas.

The BZX84 series belongs to Diodes' general-purpose Zener diode product line, engineered for cost-effective, reliable voltage regulation and clamping in consumer, industrial, and computing applications.

FAQ

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

The BZX84C16W-7 has a nominal zener voltage of 16 V, with guaranteed breakdown occurring between 15.3 V and 17.1 V at 5 mA test current. It is not rated for sustained reverse operation below this range; applying less than 15.3 V results in negligible conduction (<0.1 µA leakage at 11.2 V).

Can this device be used in parallel for higher current capability?

No - Zener diodes exhibit manufacturing spread in V_Z, causing current hogging if paralleled. Even matched units risk thermal runaway due to positive temperature coefficient. For higher current, use a single higher-power Zener or add an external pass transistor.

Is the SOT-323 package compatible with standard reflow profiles?

Yes - the BZX84C16W-7 is qualified for lead-free reflow per J-STD-020D, with moisture sensitivity level 1 (unlimited floor life at ≤30°C/60% RH). Its matte tin finish ensures reliable solderability using standard Pb-free peak temperatures up to 260°C.

How does temperature affect its regulation accuracy?

Its temperature coefficient is +10.4 to +14.0 mV/°C at 5 mA, meaning V_Z increases ~13 mV per °C rise. Over −65°C to +125°C, total drift is approximately ±1.7 V - acceptable for non-precision references but insufficient for metrology-grade applications.