Nexperia USA Inc. BZX8850-B2V7YL

Overview

BZX8850-B2V7YL from Nexperia is a low-current Zener diode in SOD882 (DFN1006-2) package, designed for precision voltage regulation at 2.7 V nominal with ±2 % tolerance. It delivers stable reference voltage at 50 μA test current, features 250 mW total power dissipation, and exhibits 190 pF capacitance at 0 V reverse bias-ideal for low-power sensor biasing and portable battery-powered voltage clamping.

For engineers reviewing the BZX8850-B2V7YL datasheet, BZX8850-B2V7YL pinout, BZX8850-B2V7YL application, or BZX8850-B2V7YL equivalent, this page provides verified electrical characteristics, thermal limits, cathode/anode terminal mapping, and direct-fit alternatives for low-current regulation in space-constrained designs.

Technical Context

This Zener operates in reverse breakdown mode with a nominal working voltage of 2.7 V at I_Z = 50 μA, exhibiting a temperature coefficient of −3.5 mV/K and differential resistance ≤600 Ω at 5 mA. Its ultra-low leakage (≤1.0 μA at V_R = 2.0 V) supports stable biasing in high-impedance analog circuits.

The device uses silicon planar technology in a leadless DFN1006-2 package with 1.0 × 0.6 × 0.5 mm body dimensions and cathode-indicating top-side marking bar. Thermal resistance from junction to ambient is 500 K/W on FR4 PCB with single-sided copper.

Key Specifications

Pinout & Package

SOD882 (DFN1006-2) leadless ultra-small surface-mount package: 1.0 mm × 0.6 mm × 0.5 mm body, tin-plated terminations, cathode marked by bar on top surface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX8850-B2V7YL, BZX84-C2V7 offers greater power handling in a larger package, while MMSZ4678T1G provides higher surge rating but compromises board density and high-frequency performance due to increased capacitance and size.

Availability

BZX8850-B2V7YL is available at Aetrix Electronics and suitable for portable sensor biasing, microcontroller reset circuits, low-power LED current control, and ESD-protected signal clamping requiring stable component supply with guaranteed long-term continuity.

Supply support for BZX8850-B2V7YL 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, energy-efficient logic, discrete, and MOSFET devices with focus on reliability and miniaturization for consumer, industrial, and automotive markets.

The BZX8850 series belongs to Nexperia's precision low-current Zener portfolio, engineered specifically for space-constrained, battery-operated applications demanding tight voltage tolerance and ultra-low leakage at microampere bias levels.

FAQ

What is the maximum reverse voltage before breakdown for BZX8850-B2V7YL?

The nominal Zener voltage is 2.7 V at 50 μA test current, with guaranteed minimum 2.65 V and maximum 2.75 V under those conditions. Breakdown begins gradually above ~2.4 V; full regulation occurs between 2.65 V and 2.75 V. Absolute maximum reverse voltage is not specified-operation beyond 2.75 V increases power dissipation and temperature rise nonlinearly.

Can BZX8850-B2V7YL be used in forward conduction mode?

Yes-it functions as a standard silicon diode with 0.9 V forward voltage at 10 mA. However, its primary design purpose is reverse-bias Zener regulation. Forward conduction is only recommended for protection clamping or polarity detection, not as a rectifier, due to its low 200 mA absolute maximum forward current rating.

How does the ±2 % tolerance affect circuit accuracy in a 3.3 V supply rail monitor?

At 2.7 V nominal, ±2 % tolerance means the actual Zener voltage falls between 2.646 V and 2.754 V. When used in a resistor-divider monitor for a 3.3 V rail, this translates to ±0.4 % uncertainty in the trip point-well within typical reset IC hysteresis windows and sufficient for detecting 5 % supply droop (3.135 V).

Is thermal derating required when operating at 85 °C ambient temperature?

Yes. With R_th(j-a) = 500 K/W and T_j(max) = 150 °C, the allowable power dissipation at 85 °C ambient drops to (150 − 85) / 500 = 130 mW. Designers must limit average Zener current to ≤48 mA at 2.7 V to stay within thermal limits, versus the full 250 mW rating at 25 °C.