Nexperia USA Inc. BZX884-C20,315

Overview

BZX884-C20,315 from Nexperia is a ±5 % tolerance Zener diode in SOD882 (DFN1006-2) package, rated for 20 V nominal Zener voltage at 5 mA, 250 mW total power dissipation, and 70 Ω typical differential resistance at 2 mA - used for precision voltage regulation and ESD protection in space-constrained automotive and industrial PCBs.

For engineers reviewing the BZX884-C20,315 datasheet, BZX884-C20,315 pinout, BZX884-C20,315 application, or BZX884-C20,315 equivalent, key selection criteria include Zener voltage tolerance (±5 %), low thermal resistance (500 K/W), AEC-Q101 qualification, ultra-small 1.0 × 0.6 mm footprint, and reverse leakage ≤100 nA at 14 V.

Technical Context

This Zener diode operates in reverse breakdown to maintain stable reference voltage under varying load and temperature conditions. Its 20 V nominal Zener voltage is specified at I_Z = 5 mA with ±5 % tolerance, and exhibits a positive temperature coefficient of +16.4 mV/K at that test current.

The device delivers 70 Ω typical dynamic impedance at 2 mA and 250 mW maximum power dissipation on FR4 PCB with standard copper footprint. It supports non-repetitive peak reverse current up to 1.5 A for 100 µs pulses at 25 °C ambient.

Key Specifications

Pinout & Package

SOD882 (DFN1006-2) is a 2-terminal, leadless ultra-small plastic package with exposed cathode marking bar on top surface. Body dimensions: 1.0 mm × 0.6 mm × 0.5 mm. Mounting requires reflow soldering only; no hand-soldering recommended.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX884-B20,315, the C-series offers lower cost and adequate stability for most regulation tasks; versus MMSZ5248ET1G, it trades larger package size for 45 % smaller footprint and better high-frequency ESD response due to lower parasitic capacitance.

Availability

BZX884-C20,315 is available at Aetrix Electronics and suitable for automotive sensor reference, industrial power rail clamp, and consumer USB-C PD feedback requiring stable component supply with AEC-Q101 compliance and ultra-small footprint.

Supply support for BZX884-C20,315 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 high-volume, high-reliability discrete and logic devices, serving automotive, industrial, and consumer markets with AEC-Q101-qualified components.

The BZX884 series belongs to Nexperia's general-purpose Zener diode product line, engineered for compact, high-stability voltage regulation and ESD protection in space- and power-constrained applications.

FAQ

What is the maximum reverse voltage this Zener can regulate continuously?

The BZX884-C20,315 is rated for continuous Zener operation at its nominal 20 V breakdown voltage, with maximum power dissipation limited to 250 mW at 25 °C ambient. At higher temperatures, derating applies per the 500 K/W thermal resistance - for example, at 85 °C ambient, maximum continuous power drops to ~175 mW, limiting sustained regulation current to ~8.75 mA.

Is this part suitable for ESD protection in high-speed data lines?

Yes - the SOD882 package delivers low parasitic capacitance (≈10 pF at 0 V) and fast response, making BZX884-C20,315 effective for ESD clamping on low-speed analog or power rails. However, it is not optimized for >100 Mbps digital lines (e.g., USB 2.0 or HDMI), where dedicated low-capacitance TVS arrays are preferred.

How does the ±5 % tolerance affect circuit design margin?

With ±5 % tolerance, the actual Zener voltage falls between 19.0 V and 21.0 V at 5 mA. Designers must ensure downstream components tolerate this 2 V window - for example, by selecting op-amps with ≥22 V supply rating or using feedback resistors adjustable to compensate for unit-to-unit variation.

Can this diode replace older through-hole Zeners like 1N4742A?

No - while both regulate at 20 V, the BZX884-C20,315 is a surface-mount SOD882 device with different thermal behavior, lower power rating (250 mW vs. 1 W), and no direct pin-to-pin compatibility. Replacement requires PCB redesign, thermal analysis, and validation of transient response under the same surge conditions.