Nexperia USA Inc. NZX8V2D,133

Overview

NZX8V2D,133 from Nexperia is a single Zener diode in a hermetically sealed SOD27 (SC-40) glass package, designed for precision voltage regulation and reference functions at 8.2 V nominal Zener voltage. It delivers 5 mA test current, 20 Ω typical differential resistance, ≤0.7 µA reverse leakage at 5 V, and 500 mW total power dissipation - suitable for low-power analog reference circuits and overvoltage clamping in industrial sensor interfaces.

For engineers reviewing the NZX8V2D,133 datasheet, NZX8V2D,133 pinout, NZX8V2D,133 application, or NZX8V2D,133 equivalent, key selection criteria include Zener voltage tolerance (±5% at IZ = 5 mA), thermal resistance (380 K/W junction-to-ambient), axial-leaded SOD27 mechanical compatibility, and low-leakage performance under low-current bias conditions.

Technical Context

This device operates as a two-terminal voltage reference with sharp Zener breakdown at 8.2 V, optimized for stable DC regulation in unregulated supply rails and feedback networks. Its low differential resistance (20 Ω typ.) ensures minimal output voltage variation across load current changes, while its low leakage (<0.7 µA at VR = 5 V) preserves accuracy in high-impedance biasing circuits.

The SOD27 package provides hermetic sealing for long-term stability and moisture resistance, and its axial lead configuration supports through-hole mounting on FR4 PCBs without thermal pads. Thermal performance is characterized with Rth(j-a) = 380 K/W and Rth(j-t) = 300 K/W, enabling reliable operation up to 175 °C junction temperature.

Key Specifications

Pinout & Package

Package: SOD27 (SC-40), hermetically sealed axial-leaded glass package with cathode band marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX85C8V2 and 1N4736A, NZX8V2D,133 offers superior regulation precision (20 Ω vs. ≥35 Ω rdif), lower leakage (<0.7 µA vs. ≥1 µA), and hermetic stability - making it optimal for high-accuracy, long-life industrial references where board space and parameter drift are constrained.

Availability

NZX8V2D,133 is available at Aetrix Electronics and suitable for industrial sensor conditioning, microcontroller reset circuitry, and DC-DC converter feedback networks requiring stable component supply with traceable sourcing and long-lifecycle support.

Supply support for NZX8V2D,133 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, reliable discrete, logic, and MOSFET devices with focus on efficiency, reliability, and miniaturization.

The NZX series targets general-purpose Zener regulation with hermetic stability, low leakage, and tight voltage tolerance - engineered specifically for industrial, instrumentation, and power management applications demanding long-term parametric consistency.

FAQ

What is the Zener voltage tolerance for NZX8V2D,133 at 5 mA test current?

The NZX8V2D,133 has a nominal Zener voltage of 8.2 V with ±5% tolerance at IZ = 5 mA, corresponding to a guaranteed range of 7.79 V to 8.61 V. This tolerance is specified in Table 8 of the Nexperia datasheet Rev. 4 and applies under standard 25 °C junction temperature conditions.

Can NZX8V2D,133 be used in surface-mount designs?

No - NZX8V2D,133 uses the axial-leaded SOD27 (SC-40) hermetic glass package, which is strictly through-hole mountable. It lacks solder pads or gull-wing leads required for reflow-compatible SMT assembly. For SMT equivalents, consider Nexperia's BZX384-B8V2 (SOT-23) or PZM8.2NB (SOT-323), which differ in package, thermal performance, and leakage.

What is the maximum forward voltage at 200 mA for NZX8V2D,133?

The maximum forward voltage (VF) is 1.5 V at IF = 200 mA, as specified in Table 1 and Table 7 of the datasheet. This value reflects the diode's anode-to-cathode drop during forward conduction and is relevant for reverse-polarity protection configurations where the device may conduct in forward bias.

How does thermal resistance impact derating for NZX8V2D,133 in PCB applications?

With Rth(j-a) = 380 K/W in free air, power dissipation must be linearly derated above 25 °C ambient: for every 1 °C rise, allowable Ptot decreases by 1.32 mW. At 70 °C ambient, maximum safe dissipation drops to ~350 mW. Mounting on FR4 without copper pour aligns with the datasheet's thermal characterization conditions.