Diodes Incorporated DDZ6V8CSF-7

Overview

DDZ6V8CSF-7 from Diodes Incorporated is a precision 0.5W surface-mount Zener diode with nominal zener voltage of 6.66–7.01 V at 20 mA test current, ±5% tolerance, 30 Ω dynamic impedance at 1 kHz, and 7.5 µA maximum reverse leakage at 4 V. It operates across –65°C to +150°C and is used for voltage regulation and reference in low-power analog circuits, power supply feedback loops, and overvoltage protection.

For engineers reviewing the DDZ6V8CSF-7 datasheet, DDZ6V8CSF-7 pinout, DDZ6V8CSF-7 application, or DDZ6V8CSF-7 equivalent, key selection criteria include zener voltage tightness (±5%), low dynamic impedance (30 Ω), SOD323F package compatibility with automated assembly, thermal resistance (250°C/W), and AEC-Q200 readiness for automotive-grade designs.

Technical Context

This Zener diode delivers stable voltage reference performance under DC bias conditions, with breakdown characterized by sharp knee behavior and minimal temperature drift near its 6.8 V nominal point. Its 30 Ω zener impedance ensures low output impedance in shunt regulator configurations.

The device uses a planar epitaxial construction on FR-4 PCBs with 10 mm × 10 mm copper pads, achieving 500 mW power dissipation and 250°C/W junction-to-ambient thermal resistance. Cathode band marking enables unambiguous polarity identification during placement.

Key Specifications

Pinout & Package

Package: SOD323F - ultra-compact plastic-molded surface-mount package with matte tin–annealed copper alloy leadframe, UL 94V-0 rated, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDZ6V8CSF-7, BZX84-C6V8LT1G offers lower unit cost but sacrifices zener voltage tightness and thermal performance; MMSZ4688T1G provides comparable voltage range with improved surge handling yet lacks automotive qualification and tighter impedance spec.

Availability

DDZ6V8CSF-7 is available at Aetrix Electronics and suitable for industrial power monitoring, automotive body control modules, consumer audio DAC reference, and medical sensor signal conditioning requiring stable component supply and long-lifecycle support.

Supply support for DDZ6V8CSF-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 semiconductor company specializing in discrete, analog, and mixed-signal devices, with design, manufacturing, and distribution operations across Asia, the Americas, and Europe.

This part belongs to the DDZxx(x)SF precision Zener series, engineered for high-accuracy voltage reference and regulation in space-constrained, thermally demanding applications including automotive and industrial systems.

FAQ

What is the exact zener voltage range for DDZ6V8CSF-7 at 20 mA?

The confirmed zener voltage range is 6.66 V (minimum) to 7.01 V (maximum) when tested at I_ZT = 20 mA and T_A = +25°C, per Diodes Incorporated datasheet DS31987 Rev. 23-2, page 2. This ±5% tolerance is tighter than standard Zeners and supports precision reference use cases.

Does DDZ6V8CSF-7 meet automotive qualification standards?

DDZ6V8CSF-7 is manufactured in IATF 16949 certified facilities and supports PPAP documentation; while not explicitly AEC-Q200 qualified in the public datasheet, Diodes states that automotive-grade variants require direct engagement with their representatives for change-controlled release-making it suitable for automotive programs with appropriate qualification oversight.

Can DDZ6V8CSF-7 be used in place of DDZ6V8BSF?

Yes-DDZ6V8CSF-7 replaces DDZ6V8BSF with improved voltage tolerance: DDZ6V8BSF specifies 6.49–6.83 V, while DDZ6V8CSF-7 extends the upper bound to 7.01 V and tightens the lower bound to 6.66 V, resulting in a narrower overall spread (±2.5% vs ±2.7%) and higher typical V_Z. No layout or circuit changes are required.

What is the thermal resistance of DDZ6V8CSF-7 on standard FR-4?

The junction-to-ambient thermal resistance (R_θJA) is 250°C/W when mounted on an FR-4 PCB with a 10 mm × 10 mm copper pad, per Note 5 in the datasheet. This value assumes a 35 mm × 25 mm board size and defines safe continuous power derating above +25°C ambient.