Diodes Incorporated BZT52C6V8-7-F

Overview

BZT52C6V8-7-F from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 6.8 V, ±5% tolerance (6.4–7.2 V), 500 mW power dissipation at TL = +75°C, 15 Ω maximum zener impedance at 5 mA test current, and SOD123 package. It provides precision voltage regulation in low-power analog reference and overvoltage protection circuits for industrial sensor interfaces and automotive body control modules.

For engineers reviewing the BZT52C6V8-7-F datasheet, BZT52C6V8-7-F pinout, BZT52C6V8-7-F application, or BZT52C6V8-7-F equivalent, key selection criteria include zener voltage accuracy, dynamic impedance at specified test current, thermal resistance (RθJA = 338 °C/W), reverse leakage at rated voltage (2.0 µA @ 4.5 V), and AEC-Q101 qualification status for automotive use.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable voltage across its terminals under varying load or supply conditions. Its planar die construction ensures consistent breakdown characteristics and low leakage, while the SOD123 package supports automated placement and offers 150 °C/W junction-to-lead thermal resistance.

The device is characterized at 5 mA test current (IZT) with a temperature coefficient of +1.2 mV/°C, indicating positive drift above 6.8 V, and exhibits 2.0 µA maximum reverse current at VR = 4.5 V - critical for low-power bias networks where leakage must be minimized.

Key Specifications

Pinout & Package

Package: SOD123 - surface-mount plastic case with cathode band marking; dimensions: D = 1.40–1.70 mm, E = 2.55–2.85 mm, He = 3.55–3.85 mm; weight ≈ 0.010 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5235BS-7-F and BZX84-C6V8, BZT52C6V8-7-F delivers superior thermal performance (500 mW at TL), lower dynamic impedance (15 Ω), and formal AEC-Q101 validation - making it the preferred choice for automotive and industrial applications demanding long-term stability and surge resilience.

Availability

BZT52C6V8-7-F is available at Aetrix Electronics and suitable for industrial sensor reference design, automotive body control module development, and USB-C power negotiation circuit implementation requiring stable component supply and full traceability.

Supply support for BZT52C6V8-7-F 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.

BZT52C6V8-7-F belongs to the BZT52C series of general-purpose Zener diodes designed for medium-current voltage regulation and overvoltage protection in cost-sensitive, high-volume applications across automotive, industrial, and computing markets.

FAQ

What is the maximum reverse current specification for BZT52C6V8-7-F at 4.5 V?

The maximum reverse current (IR) is 2.0 µA at VR = 4.5 V and TA = +25°C, as specified in the Electrical Characteristics table. This value reflects leakage under sub-breakdown conditions and is critical for high-impedance bias networks where even nanoamp-level errors affect accuracy.

Is BZT52C6V8-7-F suitable for automotive applications?

Yes - the "-Q" suffix denotes AEC-Q101 qualification, and BZT52C6V8-7-F carries the commercial "-7-F" packaging variant that shares the same die and qualification as the automotive-grade part. Its thermal and electrical specs meet requirements for body electronics, lighting controls, and infotainment power rails.

How does the SOD123 package affect thermal performance?

The SOD123 package delivers RθJA = 338 °C/W on FR-4 with a 1-inch copper pad, and RθJL = 150 °C/W to the lead. This enables 500 mW dissipation at TL = +75°C but requires careful PCB layout - undersized pads or insufficient copper will cause premature thermal shutdown or parameter shift.

What is the zener voltage tolerance and test condition?

The zener voltage is 6.8 V with a tolerance of ±5%, meaning 6.4–7.2 V, measured at IZT = 5 mA and TA = +25°C. The tolerance band is guaranteed per unit, not typical, and applies only under the stated test current and ambient temperature conditions.