Nexperia USA Inc. BZX8850-B2V0YL

Overview

BZX8850-B2V0YL from Nexperia is a low-current Zener diode in SOD882 (DFN1006-2) package, designed for precision voltage regulation at 2.0 V nominal with ±2 % tolerance. It delivers stable reference voltage at 50 µA test current, features 0.9 V forward voltage at 10 mA, and supports total power dissipation up to 250 mW - ideal for battery-powered sensor nodes and low-bias analog front-ends.

For engineers reviewing the BZX8850-B2V0YL datasheet, BZX8850-B2V0YL pinout, BZX8850-B2V0YL application, or BZX8850-B2V0YL equivalent, key selection criteria include its 2.0 V Zener voltage tolerance, ultra-small DFN1006-2 footprint, low leakage optimization, thermal resistance of 500 K/W, and suitability for portable voltage reference and overvoltage clamping in space-constrained designs.

Technical Context

This Zener diode operates as a two-terminal shunt voltage regulator, maintaining a stable 2.0 V reverse breakdown voltage across its cathode–anode terminals under controlled bias conditions. Its differential resistance is ≤600 Ω at I_Z = 50 µA and ≤100 Ω at I_Z = 1 mA, enabling predictable regulation in low-power feedback paths.

The device exhibits a negative temperature coefficient of −3.5 mV/K and diode capacitance of 220 pF at 0 V, making it suitable for DC reference generation rather than high-frequency signal conditioning. Its non-repetitive peak reverse power dissipation reaches 40 W for 100 µs pulses, supporting transient suppression in low-energy circuits.

Key Specifications

Pinout & Package

SOD882 (DFN1006-2) is a 2-terminal, leadless surface-mount plastic package with exposed copper pads on the bottom and cathode identification via a marking bar on the top surface. The body measures 1.0 mm × 0.6 mm × 0.5 mm and requires reflow-compatible solder land pattern per Figure 10.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX8850-B2V0YL, MMBZ5221BS trades tighter space efficiency for relaxed tolerance and larger footprint, while PLZ2.0B offers superior surge handling and lower capacitance at the cost of 4.6× board area - making BZX8850-B2V0YL optimal for miniaturized, battery-sensitive Zener reference use cases.

Availability

BZX8850-B2V0YL is available at Aetrix Electronics and suitable for portable sensor reference, microcontroller reset clamping, and low-power LDO feedback requiring stable component supply with tight voltage tolerance and ultra-small footprint.

Supply support for BZX8850-B2V0YL 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 scalable manufacturing and rigorous quality control.

The BZX8850 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for space-constrained, battery-operated systems needing stable voltage references at microampere bias levels.

FAQ

What is the maximum continuous reverse current this Zener can handle at 2.0 V?

The BZX8850-B2V0YL is not rated for continuous reverse conduction at exactly 2.0 V - its Zener region begins at nominal 2.0 V with specified test current of 50 µA. At 2.0 V applied reverse bias, typical leakage is ≤1.0 µA. For sustained regulation, operate at ≥50 µA to ensure stable breakdown behavior per datasheet Section 10.

Can this diode be used in series with another Zener to achieve higher reference voltage?

Yes, multiple BZX8850-B2V0YL units may be stacked in series to generate higher reference voltages (e.g., four in series ≈ 8.0 V), provided total power dissipation remains within 250 mW per device and current is limited to avoid thermal runaway. Each device must be individually derated per ambient temperature and PCB copper area.

Is the cathode marking visible under optical inspection?

Yes - the cathode is identified by a laser-marked bar on the top surface of the DFN1006-2 package, positioned adjacent to pin 1 per Figure 9. This marking is clearly visible under 10× magnification and aligns with the simplified outline in Table 2, enabling reliable automated optical inspection (AOI) during assembly.

Does this part meet RoHS and REACH compliance?

Yes - BZX8850-B2V0YL is manufactured by Nexperia in full compliance with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006, as confirmed in Nexperia's official product change notifications and material declarations available via their website and authorized distributors.