Diodes Incorporated BZX84C6V8T-7-F

Overview

BZX84C6V8T-7-F from Diodes Incorporated is a 6.8 V, 150 mW surface-mount Zener diode in SOT-523 package, with nominal zener voltage 6.8 V (min 6.4 V, max 7.2 V) at 5 mA test current, 15 Ω maximum zener impedance at 5 mA, and 2.0 µA maximum reverse leakage at 4.0 V, used for precision voltage regulation and reference in low-power analog circuits.

For engineers reviewing the BZX84C6V8T-7-F datasheet, BZX84C6V8T-7-F pinout, BZX84C6V8T-7-F application, or BZX84C6V8T-7-F equivalent, key selection criteria include zener voltage tolerance (±6%), thermal resistance (833 °C/W), RoHS-compliant matte tin plating, ultra-small footprint, and temperature coefficient (+1.2 to +4.5 mV/°C).

Technical Context

This Zener diode operates in reverse breakdown mode to maintain stable voltage across its terminals under varying load and supply conditions. It uses planar die construction for consistent parametric performance and is rated for continuous power dissipation of 150 mW at 25°C ambient, derating linearly above 25°C per the published curve.

Its electrical behavior is defined by three critical operating points: zener voltage at 5 mA (6.8 V), knee impedance at 1 mA (150 Ω), and reverse leakage at VR = 4.0 V (2.0 µA). Temperature coefficient is positive and specified between +1.2 and +4.5 mV/°C, indicating increasing VZ with rising junction temperature.

Key Specifications

Pinout & Package

SOT-523 is a 3-terminal ultra-small plastic surface-mount package with cathode-marked top-side polarity. The device has two active terminals: anode and cathode - no third terminal or internal connection.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5235BS-7-F and BZX84-C6V8,115, the BZX84C6V8T-7-F offers superior zener impedance (15 Ω), smallest footprint (SOT-523), and guaranteed RoHS compliance - making it optimal for space-constrained, high-precision, and environmentally regulated applications.

Availability

BZX84C6V8T-7-F is available at Aetrix Electronics and suitable for precision voltage reference, overvoltage protection, current-source biasing, and logic-level translation requiring stable component supply and full RoHS compliance.

Supply support for BZX84C6V8T-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.

The BZX84 series belongs to Diodes' precision Zener diode product line, engineered specifically for low-power voltage regulation, reference, and clamping in portable, automotive, and industrial electronics where size, consistency, and environmental compliance are critical.

FAQ

What is the maximum continuous reverse current this Zener can handle at 6.8 V?

The BZX84C6V8T-7-F is rated for 150 mW total power dissipation. At its nominal 6.8 V zener voltage, this corresponds to a maximum continuous reverse current of approximately 22 mA (150 mW ÷ 6.8 V). Exceeding this value risks thermal runaway unless board-level heatsinking is implemented per the 833 °C/W R_θJA specification.

Does this part have a specified capacitance value for high-frequency decoupling use?

No capacitance value is specified in the DS30262 datasheet for the BZX84C6V8T-7-F. Figure 4 shows typical total capacitance trends across the BZX84 family, estimating ~15–20 pF for 6.8 V devices, but Diodes Incorporated does not guarantee or characterize C_T for this part. It is not recommended for RF bypass or high-speed signal clamping where controlled capacitance is required.

Can this Zener be used in series to achieve higher regulated voltages?

Yes - multiple BZX84C6V8T-7-F units may be connected in series to sum their zener voltages (e.g., two in series yield ~13.6 V). However, ensure matched units or add balancing resistors, as parameter spread (±6% V_Z) causes unequal voltage division. Derate total power accordingly: each device still limited to 150 mW individually.

Is the SOT-523 package compatible with standard SMT reflow profiles?

Yes - the BZX84C6V8T-7-F meets J-STD-020D Level 1 moisture sensitivity and is qualified for standard Pb-free reflow profiles (peak 260°C, 30 sec max). Its matte tin finish and Alloy 42 leadframe ensure reliable solder joint formation without voiding or dewetting when using recommended pad layout from AP02001.