Diodes Incorporated BZT52C6V8S-7

Overview

BZT52C6V8S-7 from Diodes Incorporated is a surface-mount Zener diode with a nominal zener voltage of 6.8 V, 5 mA test current, 15 Ω maximum zener impedance at 1 kHz, 4.0 mV/°C temperature coefficient, and 200 mW power dissipation in SOD323 package. It provides precise voltage regulation in low-power biasing and reference circuits.

For engineers reviewing the BZT52C6V8S-7 datasheet, BZT52C6V8S-7 pinout, BZT52C6V8S-7 application, or BZT52C6V8S-7 equivalent, key selection criteria include zener voltage tolerance (±6%), thermal coefficient, low leakage (<1 µA at 4.5 V), RoHS-compliant lead-free construction, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load or supply conditions. Its planar die construction ensures consistent breakdown characteristics and low dynamic impedance (15 Ω at I_ZT = 5 mA).

The device exhibits a positive temperature coefficient of +1.2 mV/°C near 6.8 V, enabling predictable drift compensation in reference designs. Rated for -65°C to +150°C operation and qualified to AEC-Q101, it supports automotive and industrial environments where thermal stability and long-term reliability are critical.

Key Specifications

Pinout & Package

Package: SOD323 - ultra-small plastic surface-mount case with cathode band marking; dimensions: 1.30 mm (D) × 1.70 mm (E) × 1.05 mm (A2); weight ≈ 0.0049 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMSZ5234B-7-F and BZX84-C6V8, BZT52C6V8S-7 offers tighter voltage tolerance (±6% vs ±5% and ±6%), lower dynamic impedance (15 Ω vs 50 Ω), and AEC-Q101 qualification-making it optimal for space-constrained, thermally demanding automotive and industrial voltage reference nodes.

Availability

BZT52C6V8S-7 is available at Aetrix Electronics and suitable for automotive sensor biasing, industrial reference supplies, USB overvoltage protection, and low-power microcontroller reset circuits requiring stable component supply and full traceability.

Supply support for BZT52C6V8S-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, manufacturing, and sales operations across Asia, Europe, and North America.

The BZT52C series belongs to Diodes' high-reliability Zener diode product line, engineered specifically for precision voltage regulation in automotive, industrial, and computing applications where small size, low leakage, and AEC-Q101 compliance are essential.

FAQ

What is the maximum reverse voltage (V_R) at which leakage remains ≤1 µA?

The BZT52C6V8S-7 specifies 1 µA maximum reverse current at 4.5 V (V_R). This value is confirmed in the Electrical Characteristics table under "Maximum Reverse Current (I_R @ V_R)" for the BZT52C6V8S part number. Exceeding 4.5 V increases leakage exponentially toward breakdown.

Is this diode suitable for use in a 12 V automotive system's 5 V rail clamp?

No - the BZT52C6V8S-7 has a nominal zener voltage of 6.8 V and absolute maximum clamping of ~7.2 V. For 12 V system 5 V rail protection, a 5.1 V or 5.6 V Zener (e.g., BZT52C5V1S-7) is appropriate. Using 6.8 V would allow excessive overvoltage before clamping begins.

Does the SOD323 package support reflow soldering per JEDEC J-STD-020?

Yes - the device is rated Moisture Sensitivity Level 1 per J-STD-020, meaning it may be stored indefinitely at ≤30°C/85% RH and is compatible with standard Pb-free reflow profiles (peak 260°C). No baking is required prior to assembly.

How does the +1.2 mV/°C temperature coefficient affect regulation accuracy over temperature?

Over a -40°C to +125°C range (165°C delta), the coefficient contributes ±0.2 V drift (1.2 mV/°C × 165°C). Combined with initial ±0.4 V tolerance (6.4–7.2 V), total regulation window is ~6.2–7.4 V - acceptable for non-critical biasing but insufficient for high-precision references without compensation.