Diodes Incorporated D3Z16BF-7

Overview

D3Z16BF-7 from Diodes Incorporated is a precision 0.4W surface-mount Zener diode with nominal zener voltage 16.18 V (midpoint of 15.85–16.51 V range), ±2.1% tolerance at 5 mA test current, 20 Ω dynamic impedance at 5 mA, and −13.7 mV/°C temperature coefficient. It operates in SOD323F package and is used for voltage regulation and reference in low-power analog circuits, power supply feedback loops, and overvoltage protection.

For engineers reviewing the D3Z16BF-7 datasheet, D3Z16BF-7 pinout, D3Z16BF-7 application, or D3Z16BF-7 equivalent, key selection criteria include zener voltage accuracy, thermal coefficient stability, low leakage (<0.05 µA at 12 V), tight impedance control, and compatibility with automated SMT assembly on FR-4 PCBs.

Technical Context

This Zener diode employs silicon planar epitaxial construction to achieve stable breakdown characteristics across −65°C to +150°C ambient temperature range. Its 312.5°C/W junction-to-ambient thermal resistance reflects optimized thermal path design for the SOD323F package on standard FR-4 board layout.

The device delivers precise regulation via tightly controlled V_Z distribution (±2.1%), low dynamic impedance (20 Ω @ 5 mA), and predictable negative temperature coefficient (−13.7 mV/°C), enabling accurate voltage referencing in temperature-sensitive analog signal chains and feedback networks.

Key Specifications

Pinout & Package

Package: SOD323F - ultra-compact surface-mount plastic package (1.25 mm × 1.70 mm × 0.95 mm), molded "Green" compound (UL 94V-0), matte tin-plated copper alloy leadframe, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B16 and MMSZ5245B-TP, D3Z16BF-7 offers tighter voltage tolerance (±2.1% vs. ±3.3%/±5%), lower dynamic impedance (20 Ω vs. 40/30 Ω), and identical thermal coefficient-making it optimal for high-accuracy industrial and medical voltage references where board space and long-term stability are critical.

Availability

D3Z16BF-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB-C power delivery feedback, and programmable logic controller I/O protection requiring stable component supply, RoHS-compliant sourcing, and traceable manufacturing history.

Supply support for D3Z16BF-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.

D3ZxxBF series belongs to Diodes' precision Zener diode product line, engineered specifically for high-accuracy voltage reference and regulation in space-constrained, thermally demanding applications such as industrial automation, medical instrumentation, and communications infrastructure.

FAQ

What is the maximum power dissipation of D3Z16BF-7 under standard PCB conditions?

D3Z16BF-7 is rated for 400 mW maximum power dissipation when mounted on a standard FR-4 PCB (35 mm × 25 mm) using the recommended pad layout per Diodes' package outline documentation. Derating begins linearly above +25°C ambient, reaching zero at +150°C per the published power derating curve.

Does D3Z16BF-7 meet AEC-Q200 stress testing requirements for automotive use?

No-D3Z16BF-7 is not AEC-Q200 qualified. While Diodes offers AEC-Q200 variants in other Zener families (e.g., BZT52 series), this part is intended for industrial and commercial applications. For automotive-grade equivalents, contact Diodes' automotive team directly to request PPAP-capable, IATF 16949-manufactured alternatives.

How does the −13.7 mV/°C temperature coefficient affect circuit performance?

The negative temperature coefficient means V_Z decreases by 13.7 mV per degree Celsius rise in junction temperature. In a 16.18 V reference, this yields ~−0.085% per °C drift-critical for systems operating across −40°C to +85°C ambient, where total drift may reach ±1.9 V without compensation or calibration.

Can D3Z16BF-7 be used in bidirectional ESD protection configurations?

No-it is a unidirectional Zener diode optimized for reverse-bias regulation. Its forward voltage is 0.9 V at 10 mA, but it lacks symmetric clamping behavior or specified ESD robustness (e.g., IEC 61000-4-2). For bidirectional protection, use purpose-built TVS diodes like Diodes' D24Z5.1M-7 or AP7165 series.