NXP Semiconductors BZX384-C5V6/ZLX

Overview

BZX384-C5V6/ZLX from Nexperia is a ±5 % tolerance Zener voltage regulator diode in SOD323 (SC-76) package, rated for 5.6 V nominal breakdown voltage at 5 mA, 400 Ω max differential resistance, and 1 μA max reverse current at 4.0 V, used for low-power voltage reference and overvoltage protection in space-constrained consumer and industrial PCBs.

For engineers reviewing the BZX384-C5V6/ZLX datasheet, BZX384-C5V6/ZLX pinout, BZX384-C5V6/ZLX application, or BZX384-C5V6/ZLX equivalent, key selection criteria include its 5.6 V ±5 % regulation accuracy, 300 mW total power dissipation at 25 °C ambient, 150 °C maximum junction temperature, and SOD323 footprint compatibility with high-density reflow assembly.

Technical Context

This discrete Zener diode operates in reverse-bias breakdown mode to maintain stable DC voltage across load circuits. Its regulation performance is defined at IZ = 5 mA with VZ = 5.20 V (min) to 6.00 V (max), rdif ≤ 400 Ω, and SZ = −2.0 to +2.5 mV/K temperature coefficient.

Designed for surface-mount use on FR4 PCBs with single-sided copper, it delivers thermal resistance of 415 K/W (junction-to-ambient) and 110 K/W (junction-to-solder point), supporting reliable operation up to 150 °C junction temperature under pulsed or continuous DC conditions.

Key Specifications

Pinout & Package

SOD323 (SC-76) plastic surface-mounted package with cathode-marked end; 2.3 mm × 1.35 mm body, 0.45 mm nominal height, and tin-plated terminations for lead-free reflow soldering.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX384-B5V6 and MMSZ5232B-7-F, BZX384-C5V6/ZLX offers the best balance of compact SOD323 size, low 400 Ω differential resistance, and adequate ±5 % tolerance for cost-sensitive clamping and reference roles-without sacrificing thermal robustness or surge capability.

Availability

BZX384-C5V6/ZLX is available at Aetrix Electronics and suitable for power supply rail clamping, reference voltage generation, overvoltage protection, and signal level translation requiring stable component supply across consumer electronics, industrial controls, and IoT edge devices.

Supply support for BZX384-C5V6/ZLX 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 focused on essential efficiency-enhancing components, delivering high-volume, high-reliability diodes, MOSFETs, and logic ICs for automotive, industrial, and consumer markets.

The BZX384 series belongs to Nexperia's precision Zener regulator portfolio, engineered specifically for low-power, space-constrained voltage reference and protection applications in high-mix manufacturing environments.

FAQ

What is the nominal Zener voltage and tolerance of BZX384-C5V6/ZLX?

The BZX384-C5V6/ZLX has a nominal Zener voltage of 5.6 V with a ±5 % tolerance, meaning its actual breakdown voltage falls between 5.20 V and 6.00 V when tested at 5 mA reverse current, as specified in Table 8 of the Nexperia datasheet Rev. 4.

What is the maximum power dissipation for BZX384-C5V6/ZLX under standard PCB conditions?

BZX384-C5V6/ZLX has a total power dissipation limit of 300 mW when mounted on an FR4 PCB with single-sided copper, tin-plated traces, and standard SOD323 footprint, per Table 5 limiting values and Table 1 quick reference data.

How does the differential resistance of BZX384-C5V6/ZLX affect regulation accuracy?

The BZX384-C5V6/ZLX has a maximum differential resistance of 400 Ω at I_Z = 5 mA, meaning a 1 mA change in Zener current causes up to 0.4 V shift in regulated voltage-critical for maintaining stability in variable-load applications like sensor biasing or ADC references.

Can BZX384-C5V6/ZLX be used for transient suppression, and what is its peak surge rating?

Yes, BZX384-C5V6/ZLX supports non-repetitive peak reverse power dissipation of 40 W for pulse durations ≤100 μs, enabling effective clamping of ESD events and short-duration voltage surges without permanent degradation, as confirmed in Table 5 and Figure 1.

What is the thermal resistance from junction to ambient for BZX384-C5V6/ZLX on a standard PCB?

The thermal resistance from junction to ambient (R_th(j-a)) for BZX384-C5V6/ZLX is 415 K/W when mounted on an FR4 PCB with single-sided copper and standard footprint, per Table 6, defining its steady-state temperature rise under continuous DC power.