Diodes Incorporated DDZ16S-7

Overview

DDZ16S-7 from Diodes Incorporated is a surface-mount precision Zener diode with nominal zener voltage 15.69–16.51 V, 10 mA test current, 18 Ω maximum zener impedance at I_ZT, 0.5 µA maximum reverse leakage at 12.0 V, and 200 mW power dissipation in SOD323 package - used for voltage regulation and reference in low-power analog circuits.

For engineers reviewing the DDZ16S-7 datasheet, DDZ16S-7 pinout, DDZ16S-7 application, or DDZ16S-7 equivalent, this part serves as a stable, low-leakage, tight-tolerance voltage reference in space-constrained PCBs where thermal management and automated assembly compatibility are critical.

Technical Context

This Zener diode operates in reverse breakdown mode with sharp knee characteristics and tightly controlled V_Z tolerance (±1.5% typical over 15.69–16.51 V range). Its low 0.5 µA reverse current at 12.0 V enables high-impedance biasing and low-quiescent monitoring circuits.

The device exhibits 18 Ω dynamic impedance at 10 mA test current and temperature coefficient of ~+0.07%/°C near 16 V, supporting stable reference performance across industrial temperature range (−65°C to +150°C) when properly derated per its 625°C/W junction-to-ambient thermal resistance.

Key Specifications

Pinout & Package

Package: SOD323 - ultra-compact 2-pin surface-mount plastic case (1.30 mm × 1.70 mm × 1.05 mm), cathode-banded polarity, matte tin-plated terminals, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C16LT1G and MMSZ4687T1G, DDZ16S-7 delivers tighter voltage tolerance, lower dynamic impedance, and superior leakage performance in the smallest SOD323 footprint - making it optimal for miniaturized, high-precision reference designs where board space and accuracy are constrained.

Availability

DDZ16S-7 is available at Aetrix Electronics and suitable for industrial sensor conditioning, low-power microcontroller reference, and automotive cabin control applications requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for DDZ16S-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, specializing in high-reliability, energy-efficient components for industrial, computing, consumer, and automotive markets.

DDZ16S-7 belongs to the DDZ5V1BS–DDZ47S precision Zener series, engineered for automated SMT assembly and designed to deliver tight voltage tolerance and low leakage in miniature packages for space- and power-constrained reference applications.

FAQ

What is the maximum reverse voltage (V_R) at which DDZ16S-7 guarantees ≤0.05 µA leakage?

DDZ16S-7 guarantees ≤0.05 µA reverse leakage current at V_R = 12.0 V, as specified in the Electrical Characteristics table. This value is measured under short-pulse conditions to minimize self-heating, and remains valid up to the rated operating temperature range of −65°C to +150°C.

Can DDZ16S-7 be used in series with another Zener to achieve higher reference voltage?

Yes - DDZ16S-7 can be cascaded in series with identical or complementary Zeners (e.g., DDZ5V6BS) to generate composite reference voltages such as 21.6 V. Ensure current matching and thermal coupling between devices, and verify total power dissipation stays within 200 mW per device under worst-case ambient conditions.

Is the SOD323 package of DDZ16S-7 compatible with standard reflow profiles for lead-free soldering?

Yes - the SOD323 package uses matte tin-annealed terminals compliant with MIL-STD-202 Method 208, and is qualified for lead-free reflow per J-STD-020 Level 1 moisture sensitivity. Recommended peak temperature is 260°C with ≤60 sec above 217°C, matching IPC/JEDEC J-STD-020D.2 profiles.

Does DDZ16S-7 have a specified temperature coefficient, and how does it affect long-term stability?

DDZ16S-7 exhibits a typical temperature coefficient of +0.07%/°C near 16 V (per Fig. 13–14), resulting in ~±11 mV drift over −40°C to +85°C. This is inherent to silicon Zener physics and is fully characterized - no external compensation is required for most industrial applications where ±0.1% reference stability suffices.