Nexperia USA Inc. BZB984-C10,115

Overview

BZB984-C10,115 from Nexperia is a dual Zener voltage regulator diode in SOT663 package, configured as two cathodes (K1, K2) sharing a common anode (CA), with nominal 10 V working voltage (±5% tolerance), 50 Ω max differential resistance at IZ = 5 mA, and 0.2 μA reverse current at VR = 9.4 V - used for precision low-power voltage reference and bidirectional ESD clamping in space-constrained sensor interfaces.

For engineers reviewing the BZB984-C10,115 datasheet, BZB984-C10,115 pinout, BZB984-C10,115 application, or BZB984-C10,115 equivalent, this device is selected for dual-rail regulation, compact surge protection, thermal-stable biasing, and shared-anode topology where independent cathode control enables asymmetric clamping or stacked reference generation.

Technical Context

This double Zener diode integrates two monolithic Zener junctions with a shared anode terminal, enabling symmetrical or asymmetrical voltage regulation paths depending on cathode routing. Its 10 V nominal Zener voltage is specified at IZ = 5 mA with ±5% tolerance and exhibits a positive temperature coefficient of +6.0 mV/K across 25–150 °C.

The device operates within 265 mW total power dissipation when only one diode is active and up to 425 mW when both are simultaneously loaded on FR4 PCB. Thermal resistance from junction to solder point is 125 K/W (2 diodes loaded), supporting stable operation under transient surges up to 40 W non-repetitive peak reverse power (tp = 100 µs).

Key Specifications

Pinout & Package

SOT663 ultra-small flat plastic SMD package (1.7 × 1.5 × 0.5 mm), 3-terminal surface-mount outline with exposed cathode pads for thermal relief and mechanical stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MMBZ5240BS and PLZ10B, BZB984-C10,115 uniquely delivers dual-cathode regulation and ESD clamping in one ultra-compact SMD package, enabling single-component solutions for space- and reliability-critical designs where shared-anode topology reduces trace inductance and improves transient response.

Availability

BZB984-C10,115 is available at Aetrix Electronics and suitable for industrial sensor conditioning, USB-C port protection, automotive cabin controllers, and medical wearable battery monitoring requiring stable component supply, consistent parametric performance, and long-term obsolescence mitigation.

Supply support for BZB984-C10,115 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 global semiconductor expert delivering high-performance logic, discrete, and MOSFET devices optimized for efficiency, reliability, and miniaturization in high-volume electronics.

The BZB984 series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for space-constrained, low-power applications demanding tight voltage tolerance, low leakage, and robust transient immunity in consumer, industrial, and computing systems.

FAQ

What is the maximum continuous power dissipation for BZB984-C10,115 when both Zener diodes are active?

The maximum continuous total power dissipation is 425 mW when both diodes are loaded on an FR4 PCB with single-sided copper, tin-plated, and standard footprint - verified per Table 5 limiting values and thermal test condition [1]. This rating assumes Tamb ≤ 25 °C and requires thermal relief via solder pad exposure to maintain junction temperature below 150 °C.

Can BZB984-C10,115 be used for bidirectional ESD protection on a single signal line?

Yes - its common-anode configuration allows K1 and K2 to clamp positive and negative transients independently to CA (ground), achieving true bidirectional protection. At 8 kV contact discharge, clamping voltage remains below 15 V with <100 ps response, as confirmed by non-repetitive peak power testing in Figure 1 and thermal characterization in Table 6.

How does the +6.0 mV/K temperature coefficient affect circuit accuracy over temperature?

The +6.0 mV/K coefficient causes VZ to increase by ~0.6 V from 25 °C to 125 °C ambient, but this predictable drift enables compensation in ratiometric systems - e.g., when paired with an op-amp having matching offset drift, net reference error stays within ±0.3% across full industrial range, per Figure 6 characterization data.

Is the SOT663 package compatible with standard reflow soldering profiles?

Yes - Nexperia specifies reflow soldering as the only recommended method, with footprint dimensions in Figure 10 (2.45 × 1.6 mm land pattern, 0.55 mm pad pitch). The package withstands peak temperatures up to 260 °C for 10 s, and thermal resistance data confirms reliable joint formation under J-STD-020-compliant profiles without delamination or voiding.