Nexperia USA Inc. BZB984-C6V8,115

Overview

BZB984-C6V8,115 from Nexperia is a dual Zener voltage regulator diode in SOT663 package with nominal 6.8 V working voltage, ±5% tolerance, and 30 Ω typical differential resistance at I_Z = 5 mA. It delivers 425 mW total power dissipation (2 diodes loaded) and supports ESD/surge protection and low-power regulation in space-constrained PCBs.

For engineers reviewing the BZB984-C6V8,115 datasheet, BZB984-C6V8,115 pinout, BZB984-C6V8,115 application, or BZB984-C6V8,115 equivalent, this device serves as a compact dual-Zener solution for bidirectional clamping, rail-to-rail voltage stabilization, and transient suppression in portable electronics and sensor interfaces.

Technical Context

This dual-common-anode Zener diode integrates two independent 6.8 V Zener elements sharing a single anode terminal (Pin 3), enabling symmetrical clamping across signal lines or dual-rail regulation without discrete pairing. Each cathode (Pins 1 and 2) operates independently with matched V_Z and thermal coefficient (S_Z = +3.0 mV/K at I_Z = 5 mA).

Designed for FR4 PCB mounting with tin-plated copper, it achieves 125 K/W junction-to-solder-point thermal resistance when both diodes are active, supporting sustained 265 mW per diode under ambient ≤25 °C. Its non-repetitive peak reverse power capability reaches 40 W for 100 µs pulses.

Key Specifications

Pinout & Package

SOT663 is an ultra-small flat plastic surface-mount package (1.7 × 1.5 × 0.5 mm) with three leads and exposed cathode tabs for thermal conduction. Its footprint requires 0.55 mm pad width and 0.6 mm spacing per IPC-7351B.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-Zener regulation applications.

Compared with DMN601WKQ-7 and BZX84-C6V8,215, the BZB984-C6V8,115 uniquely provides matched dual-Zener performance in one ultra-compact package, reducing component count by 50% and PCB area by 65% in bidirectional protection schemes.

Availability

BZB984-C6V8,115 is available at Aetrix Electronics and suitable for USB interface protection, sensor biasing, industrial CAN bus termination, and microcontroller I/O translation requiring stable component supply and long-term obsolescence management.

Supply support for BZB984-C6V8,115 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

Nexperia is a leading semiconductor manufacturer specializing in high-performance, energy-efficient logic, discrete, and MOSFET devices, with global R&D and manufacturing infrastructure.

The BZB984 series belongs to Nexperia's precision Zener regulator portfolio, engineered for space-constrained, low-power regulation and transient suppression in consumer, industrial, and communications equipment.

FAQ

What is the maximum continuous reverse current the BZB984-C6V8,115 can sustain?

The device supports a maximum continuous forward current of 200 mA per diode, but its Zener operation is specified at test currents up to 5 mA for regulation accuracy. Sustained reverse conduction beyond 5 mA increases self-heating and must be limited by external series resistance to maintain T_j ≤ 150 °C and ensure ±5% V_Z stability.

Can BZB984-C6V8,115 be used for AC signal clipping?

Yes - its common-anode dual-Zener structure enables symmetrical ±6.8 V clipping of AC waveforms when the CA pin is grounded and K1/K2 connect to opposing signal paths. Forward voltage drop remains ≤0.9 V at 10 mA, ensuring low-distortion clipping up to 1 MHz with <200 pF capacitance.

How does thermal resistance change when only one diode is active?

When only one diode conducts, R_th(j-sp) rises to 230 K/W (vs. 125 K/W for two diodes), increasing junction temperature rise per watt by 84%. For 265 mW single-diode operation, ΔT_j ≈ 61 °C above solder point - requiring ambient derating to ≤89 °C to stay within 150 °C T_j limit.

Is the 6.8 V Zener voltage guaranteed at temperatures outside 25 °C?

V_Z varies predictably with temperature: +3.0 mV/K at I_Z = 5 mA. At 85 °C, V_Z increases by +180 mV (to 6.98 V); at -40 °C, it decreases by -360 mV (to 6.44 V). The ±5% initial tolerance applies only at 25 °C - full-temperature performance must be calculated using S_Z and actual I_Z.