Diodes Incorporated DFLZ6V2Q-7

Overview

DFLZ6V2Q-7 from Diodes Incorporated is a 1.0W surface-mount power Zener diode in PowerDI123 package, with nominal Zener voltage 6.2V (±5% tolerance), zener impedance 1Ω at 100mA test current, and thermal resistance junction-to-soldering point of 9°C/W. It is AEC-Q101 qualified for automotive applications and features a patented interlocking clip design for high-surge capacity.

For engineers reviewing the DFLZ6V2Q-7 datasheet, DFLZ6V2Q-7 pinout, DFLZ6V2Q-7 application, or DFLZ6V2Q-7 equivalent, key selection criteria include its 6.2V regulation accuracy, 1W power dissipation on FR-4 PCB, low RθJS (9°C/W), AEC-Q101 qualification, and green RoHS-compliant construction - all critical for automotive voltage clamping and ESD protection circuits.

Technical Context

This Zener diode operates in reverse breakdown to provide precise voltage regulation and transient overvoltage suppression. Its 6.2V nominal Zener voltage exhibits a temperature coefficient of –0.01%/°C to +0.06%/°C, enabling stable reference performance across –55°C to +150°C operating range.

The PowerDI123 package integrates an exposed cathode pad for direct thermal coupling to PCB copper, achieving 9°C/W junction-to-soldering-point thermal resistance. The patented interlocking clip structure enhances surge current handling beyond standard Zener designs per US Patent #7,095,113.

Key Specifications

Pinout & Package

Package: PowerDI123 - molded plastic case with exposed cathode pad for thermal and electrical connection; UL 94V-0 rated; moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener voltage regulation and clamping applications.

Compared with BZX84-C6V2-7-F and MMSZ5234BS-7-F, DFLZ6V2Q-7 delivers 2× and 2× higher power rating respectively, 13× and 13× lower R_θJS, and full AEC-Q101 compliance - making it the sole choice for 1W automotive clamping in constrained layouts.

Availability

DFLZ6V2Q-7 is available at Aetrix Electronics and suitable for automotive body control modules, infotainment power supplies, and ADAS camera modules requiring stable component supply with AEC-Q101 traceability and green material compliance.

Supply support for DFLZ6V2Q-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 and manufacturing operations across Asia and the Americas.

This device belongs to the DFLZ automotive Zener series, engineered specifically for high-reliability voltage regulation and transient suppression in harsh automotive environments - emphasizing thermal robustness, surge resilience, and environmental compliance.

FAQ

What is the maximum peak pulse power this Zener can handle?

The DFLZ6V2Q-7 is not characterized for standardized peak pulse power (e.g., 10/1000µs waveform) in its datasheet. Its surge capability derives from the patented interlocking clip design (US Patent #7,095,113), validated via AEC-Q101 transient overload tests. For design margin, use the 1W DC derating curve (Figure 1) and apply appropriate safety factors per ISO 7637-2 Pulse 5a.

Is the cathode pad electrically isolated from the anode terminal?

No. The exposed cathode pad is the primary cathode terminal and is electrically identical to the cathode lead. It must be connected to the same net as the cathode pin - typically system ground or the regulated rail reference. There is no internal isolation between the pad and cathode pin; both form a single low-impedance current path.

Can this part replace a 6.2V Zener in a legacy SOD-123 footprint?

No. The PowerDI123 package (3.7mm × 1.78mm) has different dimensions, pad layout, and thermal pad requirements than SOD-123 (3.7mm × 1.6mm). While outline lengths are similar, the PowerDI123's larger exposed cathode pad and distinct leadframe geometry require PCB redesign. Refer to Diodes' suggested pad layout (DS36898, page 4) for correct implementation.

Does the "Q" in DFLZ6V2Q-7 indicate automotive qualification?

Yes. Per Diodes Incorporated's ordering nomenclature, the "Q" suffix denotes AEC-Q101 qualification and PPAP capability. The "-7" indicates 3000-piece tape-and-reel packaging. All DFLZxVxQ parts meet AEC-Q101 stress test requirements and are manufactured in IATF 16949-certified facilities.