Nexperia USA Inc. NZX10B,133

Overview

NZX10B,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 10 V nominal working voltage (9.7–10.1 V range), with 25 Ω typical differential resistance at I_Z = 5 mA, ≤0.2 µA reverse leakage at V_R = 7 V, and 500 mW total power dissipation - used in low-power analog supply rails and sensor biasing circuits.

For engineers reviewing the NZX10B,133 datasheet, NZX10B,133 pinout, NZX10B,133 application, or NZX10B,133 equivalent, this part serves as a stable, low-leakage, axial-leaded Zener reference for industrial control signal conditioning, embedded power monitoring, and precision voltage clamping where thermal stability and long-term parameter consistency are required.

Technical Context

This device operates as a two-terminal voltage reference using avalanche breakdown in silicon, with a specified temperature coefficient of approximately −2 mV/K near 10 V, optimized for stable regulation under low-current conditions (I_Z = 5 mA). Its hermetic glass package ensures minimal parameter drift over time and humidity exposure.

The NZX10B,133 exhibits low dynamic impedance (25 Ω typ.) and tight V_Z tolerance (±0.2 V at 25 °C), enabling accurate voltage clamping in feedback loops and analog front-end protection. It is rated for junction temperatures up to 175 °C and ambient operation from −55 °C to +175 °C.

Key Specifications

Pinout & Package

The NZX10B,133 uses a 2-pin axial-leaded SOD27 (SC-40) hermetically sealed glass package. The cathode is marked by a band on the glass body; leads are tinned copper alloy with 8 mm maximum length per JEDEC standards.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BZX55-C10 and MMSZ4686, NZX10B,133 delivers tighter V_Z control and lower dynamic impedance in a rugged hermetic package - making it preferred for long-life industrial instrumentation and high-reliability analog signal chains where parameter stability is non-negotiable.

Availability

NZX10B,133 is available at Aetrix Electronics and suitable for industrial sensor interfaces, microcontroller reset supervision, RS-485 transient protection, and FPGA I/O supply clamping requiring stable component supply across multi-year production cycles.

Supply support for NZX10B,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 logic, discrete, and MOSFET devices with focus on efficiency, reliability, and miniaturization for industrial, automotive, and consumer markets.

The NZX series targets general-purpose Zener regulation with hermetic stability and tight tolerances - engineered specifically for analog reference, voltage clamping, and biasing in harsh-environment electronics where parameter drift must be minimized.

FAQ

What is the maximum continuous forward current for NZX10B,133?

The NZX10B,133 is not rated for continuous forward conduction; its absolute maximum forward current is 250 mA per pulse test (t_p ≤ 300 µs, duty cycle ≤ 2%). In normal Zener operation, forward voltage remains below 1.5 V at 200 mA, but sustained forward bias is outside its intended function and risks thermal runaway.

Does NZX10B,133 require a series current-limiting resistor in all applications?

Yes - a series resistor is mandatory to limit Zener current to within the 5 mA test condition or derated operating range. For example, at 15 V supply and 10 V V_Z, a 1 kΩ resistor limits I_Z to 5 mA; omitting it risks exceeding 500 mW dissipation and permanent junction damage.

How does the temperature coefficient affect regulation accuracy over −40 °C to +125 °C?

At 10 V, NZX10B,133 has a typical temperature coefficient of −2 mV/K. Over an 165 °C range, this yields ~330 mV total V_Z shift - compensated in precision designs using dual-Zener configurations or temperature-aware calibration algorithms.

Can NZX10B,133 be used in place of a 10 V TL431 shunt regulator?

No - the NZX10B,133 is a passive two-terminal device with no internal amplification or adjustable reference. Unlike the TL431, it cannot sink variable current or provide error-amplified regulation; it serves only as a fixed-voltage clamp or reference, requiring external biasing and lacking active feedback capability.