Diodes Incorporated DDZ9696T-7

Overview

DDZ9696T-7 from Diodes Incorporated is a surface-mount Zener diode with nominal zener voltage 9.1 V, ±5% tolerance (8.65–9.56 V), 150 mW power dissipation, 0.1 µA reverse leakage at 6.9 V, and SOD523 package. It provides precise voltage regulation in low-power biasing, reference, and protection circuits for portable electronics and sensor signal conditioning.

For engineers reviewing the DDZ9696T-7 datasheet, DDZ9696T-7 pinout, DDZ9696T-7 application, or DDZ9696T-7 equivalent, key selection criteria include zener voltage accuracy, low leakage at rated VR, thermal resistance (833 °C/W), sharp breakdown characteristics, and compatibility with automated SMT assembly on FR-4 PCBs.

Technical Context

This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown to maintain stable voltage across its terminals under controlled current (IZT = 50 µA). Its sharp knee and low dynamic impedance (typ. 15 Ω at IZ = 5 mA, per Fig. 11) enable high-precision regulation in low-current applications.

The SOD523 package supports high-density layouts and reflow-compatible assembly, with cathode band marking and matte tin-plated alloy 42 leads. Thermal performance is defined for JEDEC-standard FR-4 mounting with specified pad layout, delivering 150 mW at 25°C ambient and derating linearly above 25°C per Fig. 1.

Key Specifications

Pinout & Package

Package: SOD523 - ultra-small, low-profile surface-mount plastic case (0.80 mm × 0.60 mm × 0.60 mm), UL 94V-0 rated, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX584C9V1 and MMSZ5240B, DDZ9696T-7 offers the smallest board area (SOD523), lowest leakage (0.1 µA), and optimized thermal resistance for ultra-compact, low-quiescent-current applications-making it preferred for space- and power-sensitive portable and sensor systems.

Availability

DDZ9696T-7 is available at Aetrix Electronics and suitable for portable power management, sensor signal conditioning, and automotive body electronics requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for DDZ9696T-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 the Americas.

The DDZ9689T–DDZ9717T series belongs to Diodes' precision Zener diode product line, engineered specifically for high-accuracy voltage reference and low-leakage clamping in space-constrained, low-power electronic systems.

FAQ

What is the maximum zener test current (IZT) for DDZ9696T-7?

The datasheet specifies IZT = 50 µA for DDZ9696T-7. This is the standardized test current used to measure nominal zener voltage (9.1 V) and define the voltage range (8.65–9.56 V). Operation at higher currents is permitted within the 150 mW power limit, but voltage regulation shifts slightly due to dynamic impedance and temperature effects.

Does DDZ9696T-7 have a specified zener impedance (ZZT)?

Yes-Figure 11 shows typical zener impedance vs. voltage for the 7–12 V group (including DDZ9696T-7) as approximately 15 Ω at 5 mA. While not a guaranteed parameter in the Electrical Characteristics table, this value is confirmed in the datasheet's graphical data and reflects low dynamic impedance critical for stable regulation under varying load conditions.

Can DDZ9696T-7 be used in place of a 9.1 V through-hole zener like 1N4739A?

No-it is not a direct replacement. The 1N4739A is a 1 W, DO-41 device with different thermal behavior, voltage tolerance (±5% same, but different test conditions), and mechanical form factor. DDZ9696T-7 is optimized for SMT, low-power, and high-density use; substituting requires verifying power dissipation, layout, and thermal derating in the target application.

Is the cathode band orientation consistent across all DDZ9689T–DDZ9717T devices?

Yes-the datasheet explicitly states "Terminal Connections: Cathode Band" for the entire series, and the top-view marking diagram confirms the cathode band is located at one end of the SOD523 body. This orientation is standardized across all variants, enabling consistent pick-and-place programming and visual inspection in automated assembly.