Diodes Incorporated DDZ5V6BQ-7

Overview

DDZ5V6BQ-7 from Diodes Incorporated is a precision Zener diode optimized for voltage regulation and reference applications in automotive-grade power management circuits. It delivers a tightly controlled zener voltage of 5.45–5.73 V at 20 mA, with low dynamic impedance (11 Ω at 1 kHz), maximum reverse current of 0.5 µA at 2.5 V, and AEC-Q101 qualification for under-hood electronics.

For engineers reviewing the DDZ5V6BQ-7 datasheet, DDZ5V6BQ-7 pinout, DDZ5V6BQ-7 application, or DDZ5V6BQ-7 equivalent, this device is selected for stable low-voltage reference generation, overvoltage clamping in 5 V rail protection, and precision biasing in sensor signal conditioning where ±2.5% V_Z tolerance and <11 Ω Z_ZT are critical.

Technical Context

This SOD123-packaged Zener operates in reverse breakdown mode with a nominal 5.6 V regulation point. Its thermal resistance (R_θJA) is 425 °C/W on minimal pad layout and 266 °C/W on 1 in² copper, enabling reliable operation up to +150 °C junction temperature. The device exhibits a negative temperature coefficient near zero crossing - typical for 5–6 V Zeners - ensuring stable reference performance across automotive ambient ranges.

It features a cathode band marking for unambiguous polarity identification, matte tin–annealed terminals compatible with lead-free reflow, and moisture sensitivity level 1 per J-STD-020. The "Q" suffix confirms AEC-Q101 qualification, PPAP capability, and IATF16949 manufacturing compliance - essential for functional safety–aware designs.

Key Specifications

Pinout & Package

Package: SOD123 - surface-mount plastic package with cathode band marking; dimensions: 2.65 mm × 1.55 mm × 1.05 mm (E × D × A); weight ≈ 0.01 g; UL 94V-0 rated molding compound.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DDZ5V6BQ-7, BZX84-C5V6LT1G trades precision and qualification for lower cost and wider availability, while MMSZ5232BS-7-F matches the SOD123 form factor but omits automotive stress validation - making DDZ5V6BQ-7 the sole choice for ASIL-aware voltage reference integrity.

Availability

DDZ5V6BQ-7 is available at Aetrix Electronics and suitable for automotive ECU design, ADAS power protection, and EPS sensor interface applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q101 traceability.

Supply support for DDZ5V6BQ-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 components for automotive, industrial, and computing markets.

The DDZ series targets automotive-grade precision Zener references - engineered for stable voltage regulation in harsh environments, with emphasis on tight V_Z tolerance, low Z_ZT, and full AEC-Q101 compliance.

FAQ

What is the maximum power dissipation of DDZ5V6BQ-7 at +75°C ambient?

The DDZ5V6BQ-7 has a maximum power dissipation of 500 mW at T_L = +75°C (lead temperature), as specified in the Absolute Maximum Ratings table. This rating assumes proper PCB thermal relief and applies only when the device is mounted with adequate copper area per Note 6 (R_ΘJL = 132 °C/W). Derating is required above +75°C.

Does DDZ5V6BQ-7 have a defined forward voltage specification?

Yes - the forward voltage (V_F) is specified as 0.9 V maximum at I_F = 10 mA. This value is relevant for reverse-polarity protection circuits or dual-use configurations where the device may conduct forward during fault conditions, and it aligns with standard silicon diode behavior in the SOD123 package.

How does the temperature coefficient of V_Z behave for DDZ5V6BQ-7?

Based on Figure 16 in DS30407 Rev. 21-2, DDZ5V6BQ-7 (a 5.6 V part) exhibits a temperature coefficient near zero - approximately ±0.02 %/°C - which minimizes drift over −40 to +125 °C. This near-zero TC is characteristic of Zeners in the 5–6 V range and is confirmed by the datasheet's TC vs. V_Z curves.

Is the SOD123 package of DDZ5V6BQ-7 compatible with standard reflow profiles?

Yes - the device uses matte tin–annealed terminals and is rated for lead-free reflow per JEDEC J-STD-020. Its moisture sensitivity level is 1, meaning it can be stored indefinitely at ≤30 °C/85% RH without baking. Standard IPC/JEDEC profiles for Pb-free solder (peak ~260 °C) are fully supported, with no special pre-conditioning required.