Diodes Incorporated DDZ6V8CS-7

Overview

DDZ6V8CS-7 from Diodes Incorporated is a surface-mount precision Zener diode in SOD323 package, designed for voltage regulation and reference applications with nominal Zener voltage 6.66–7.01 V at 20 mA, maximum Zener impedance 5 Ω at I_ZT, leakage current ≤0.5 µA at 5.0 V reverse bias, and power dissipation rating of 200 mW. It is used in low-power analog reference circuits, overvoltage protection clamping, and feedback sensing in DC-DC converters.

For engineers reviewing the DDZ6V8CS-7 datasheet, DDZ6V8CS-7 pinout, DDZ6V8CS-7 application, or DDZ6V8CS-7 equivalent, key selection criteria include tight Zener voltage tolerance (±2.5% typical), low dynamic impedance for stable regulation, SOD323 footprint compatibility with high-density PCB layouts, and RoHS-compliant lead-free construction suitable for automated reflow assembly.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its terminals under controlled current conditions. Its sharp knee characteristic and low Z_ZT ensure minimal voltage variation with load changes, while the 1 mA–20 mA operating range supports both precision biasing and moderate-current shunt regulation.

The device exhibits a temperature coefficient of approximately +0.04 %/°C near 6.8 V, enabling predictable drift behavior in ambient-temperature-varying environments. Its SOD323 package provides thermal resistance of 625 °C/W on FR-4 board, limiting junction temperature rise under continuous 200 mW dissipation.

Key Specifications

Pinout & Package

SOD323 package: 2-terminal surface-mount plastic case with cathode band marking; dimensions: 1.30 mm (D) × 1.70 mm (E) × 0.30 mm (L); weight ≈ 0.004 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX84-C6V8 and MMSZ4687, DDZ6V8CS-7 delivers superior regulation stability due to its lower Z_ZT and tighter V_Z tolerance, while maintaining the smallest standard footprint-making it optimal for space-constrained, high-accuracy analog reference designs.

Availability

DDZ6V8CS-7 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, USB-C power delivery feedback, automotive body control module clamping, and IoT node battery voltage monitoring requiring stable component supply and full traceability.

Supply support for DDZ6V8CS-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, industry-qualified components for automotive, industrial, and consumer markets.

DDZ6V8CS-7 belongs to the DDZ series of precision Zener diodes engineered for stable voltage reference and clamping in compact, automated-assembly-ready packages like SOD323.

FAQ

What is the maximum continuous Zener current for DDZ6V8CS-7 at room temperature?

The maximum continuous Zener current is derived from its 200 mW power rating and nominal 6.8 V Zener voltage, yielding ~29.4 mA. However, the datasheet specifies test conditions up to 20 mA for parameter characterization, and sustained operation above this level requires thermal derating per the power derating curve in Figure 1-especially above 25 °C ambient.

Does DDZ6V8CS-7 have a specified capacitance value?

No capacitance value is listed in the DS30414 datasheet for DDZ6V8CS-7. While Figure 6 shows typical total capacitance vs. nominal Zener voltage (≈15 pF at 6.8 V), this is extrapolated from adjacent devices and not guaranteed for DDZ6V8CS-7. For timing-critical or RF applications, direct measurement or selection of a part with published C_T is recommended.

Can DDZ6V8CS-7 be used in place of a 6.8 V Zener with different package types?

DDZ6V8CS-7 is qualified only in SOD323. Substituting into SOT-23 or SOD-123 footprints requires mechanical redesign and thermal validation, as thermal resistance (625 °C/W) and power handling depend on the specific pad layout and board construction defined for SOD323 in Diodes' package outline documentation.

Is the temperature coefficient of DDZ6V8CS-7 documented in the datasheet?

Yes-the temperature coefficient is not given as a standalone value for DDZ6V8CS-7, but Figure 12 shows typical TC of V_Z vs. Zener voltage for the 6.2 V–10 V group, indicating +0.04 %/°C at 6.8 V with I_ZT = 5 mA. This enables accurate prediction of V_Z drift across −40 °C to +125 °C in reference designs.