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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Nexperia USA Inc. NZX15X,133

Name: NZX15X,133
Brand: Nexperia USA Inc.
SKU: NZX15X,133
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NZX15X,133

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

Package:: DO-204AH, DO-35, Axial

Datasheet:: NZX15X,133.pdf

Description:: DIODE ZENER 14.72V 500MW ALF2

Quantity:: RFQ Add To RFQ list

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Inventory:8,304

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Product details

Overview

NZX15X,133 from Nexperia is a single Zener diode in a hermetically sealed SOD27 (SC-40) glass package, designed for precision voltage regulation and reference applications. It delivers a nominal Zener voltage of 14.35 V to 15.09 V at I_Z = 5 mA, with differential resistance ≤40 Ω, reverse current ≤0.05 µA, total power dissipation up to 500 mW, and operates across −65 °C to +175 °C ambient temperature.

For engineers reviewing the NZX15X,133 datasheet, NZX15X,133 pinout, NZX15X,133 application, or NZX15X,133 equivalent, this device serves as a stable, low-leakage voltage reference in power supply feedback loops, overvoltage protection circuits, and analog signal conditioning where tight tolerance and thermal stability are required.

Technical Context

This axial-leaded Zener diode operates in reverse breakdown mode to maintain a stable reference voltage under varying load and temperature conditions. Its low differential resistance (≤40 Ω) ensures minimal voltage variation with current changes, while its ultra-low reverse leakage (≤0.05 µA at 5 mA) supports high-impedance biasing and low-power sensing.

The device uses a hermetically sealed glass package (SOD27/SC-40) that provides superior long-term stability and moisture resistance compared to plastic-packaged Zeners. Thermal resistance from junction to ambient is 380 K/W in free air, enabling reliable operation without heatsinking in low-power regulation tasks.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	14.35 V to 15.09 V at I_Z = 5 mA - defines precise regulation threshold for feedback and clamping
Differential Resistance (r_dif)	≤40 Ω - ensures <±0.2 V deviation over ±1 mA current change, critical for stable reference accuracy
Reverse Current (I_R)	≤0.05 µA at V_R = 10.5 V - enables use in high-impedance circuits without loading error
Total Power Dissipation (P_tot)	500 mW maximum at T_tp ≤ 25 °C - supports continuous operation in compact PCB layouts
Junction Temperature (T_j)	−65 °C to +175 °C - allows deployment in industrial, automotive under-hood, and aerospace environments
Thermal Resistance (R_th(j-a))	380 K/W in free air - determines self-heating rise (~190 °C/W × 0.5 W ≈ 95 °C rise), guiding derating requirements

Pinout & Package

Package: SOD27 (SC-40), hermetically sealed axial-leaded glass package with 2 terminals; cathode identified by a colored band.

Pin/Terminal	Circuit Role	Design Meaning
1	Cathode	Connected to regulated output node in shunt configuration; polarity must be observed for correct breakdown conduction
2	Anode	Connected to ground or lower-potential rail; completes reverse-bias path for Zener operation

Key Features

Feature	Design Value
Hermetic glass sealing	Prevents moisture ingress and parameter drift over decades, ensuring long-term voltage stability in harsh environments
Low differential resistance	≤40 Ω minimizes output voltage shift under dynamic load changes, improving regulation fidelity in feedback networks
Ultra-low leakage current	≤0.05 µA avoids loading errors in high-impedance reference dividers and battery-powered sensor interfaces
Wide operating temperature range	−65 °C to +175 °C enables use in extended-temperature industrial controls and engine management systems

Applications

Power Supply Feedback

Overvoltage Protection

Use Scenario: Used in the optocoupler feedback loop of isolated DC-DC converters to regulate output voltage.

IC Role / Device Role / Timing Role: Provides stable voltage reference for TL431-type shunt regulators or direct comparator input.

Use Value: Tight V_Z tolerance (±0.74 V) and low r_dif ensure ±1% output regulation accuracy across line/load/temperature.

Use Scenario: Placed across sensitive IC inputs to clamp transient overvoltages above 15 V.

IC Role / Device Role / Timing Role: Acts as passive crowbar element, conducting only when voltage exceeds V_Z.

Use Value: Low leakage (<0.05 µA) prevents signal distortion during normal operation; fast response limits overshoot duration.

Reference Voltage Source

Current Source Biasing

Use Scenario: Supplies reference voltage to ADC voltage dividers or op-amp offset calibration circuits.

IC Role / Device Role / Timing Role: Delivers stable, low-noise DC reference independent of supply fluctuations.

Use Value: Hermetic packaging eliminates humidity-induced drift, maintaining <10 ppm/°C long-term stability.

Use Scenario: Sets bias current for LED drivers or transistor amplifiers via constant-current sink configuration.

IC Role / Device Role / Timing Role: Functions as voltage-controlled current source when combined with series resistor.

Use Value: Predictable V_Z and r_dif enable ±2% current accuracy without trimming resistors.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX55-C15	V_Z = 14.7 V ±5%, r_dif ≤30 Ω, P_tot = 500 mW, DO-35 package	Plastic DO-35 lacks hermetic seal; higher long-term drift risk in humid environments	Select for cost-sensitive consumer designs where long-term stability is secondary to BOM cost
1N4744A	V_Z = 15 V ±5%, r_dif ≤16 Ω, P_tot = 1 W, DO-41 package	Higher power rating but larger footprint; not suitable for space-constrained SOD27 layouts	Select when >500 mW dissipation or lower r_dif is required, accepting larger board area

Compared with BZX55-C15 and 1N4744A, NZX15X,133 offers superior long-term stability due to hermetic glass sealing and tighter V_Z spread (±0.37 V vs ±0.75 V), making it preferred for industrial instrumentation and automotive subsystems requiring decade-level reliability.

Availability

NZX15X,133 is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and test equipment requiring stable component supply with guaranteed long-term parametric consistency and traceable sourcing.

Supply support for NZX15X,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 solutions with focus on efficiency, reliability, and miniaturization for industrial, automotive, and computing markets.

The NZX series targets precision voltage reference and regulation in demanding environments, emphasizing hermetic stability, wide temperature operation, and low-parameter drift-designed specifically for applications where long-term calibration integrity is non-negotiable.

FAQ

What is the exact Zener voltage range for NZX15X,133 at 5 mA test current?

The confirmed Zener voltage range is 14.35 V to 15.09 V at I_Z = 5 mA and T_j = 25 °C, per Table 8 of the official Nexperia datasheet Rev. 4. This 0.74 V span reflects the 'X' tolerance grade, tighter than standard ±5% Zeners.

Can NZX15X,133 replace BZX55-C15 in existing designs without layout changes?

No-NZX15X,133 uses SOD27 (SC-40) axial package with 25.4 mm lead spacing, while BZX55-C15 uses DO-35 with 2.5 mm body diameter and different lead pitch. Mechanical rework is required; electrical substitution is viable only after verifying thermal derating and leakage impact.

Does NZX15X,133 have automotive qualification?

No-this part is explicitly marked as non-automotive qualified in the Nexperia datasheet. It is not tested to AEC-Q101 and lacks automotive-specific reliability reporting; use in automotive applications requires customer validation and assumes full liability per Nexperia's legal disclaimers.

What is the maximum forward voltage at 200 mA, and how does it affect reverse-bias operation?

Forward voltage is ≤1.5 V at I_F = 200 mA (Table 1), but this parameter is irrelevant during normal Zener operation, which occurs exclusively in reverse bias. Forward conduction is only relevant during fault conditions or incorrect installation and does not influence regulation performance.

NZX15X,133 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: NZX

Package/Case:: DO-204AH, DO-35, Axial

Packaging:: Cut Tape (CT)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 14.72 V

Tolerance:: ±2%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 40 Ohms

Current - Reverse Leakage @ Vr:: 50 nA @ 10.5 V

Voltage - Forward (Vf) (Max) @ If:: 1.5 V @ 200 mA

Operating Temperature:: -55°C ~ 175°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: ALF2

NZX15X,133 FAQ

1.How can I place an order for NZX15X,133 through Aetrix?

Please submit a Request for Quotation (RFQ) for NZX15X,133 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for NZX15X,133 reliable?

The price and inventory of NZX15X,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX15X,133 is usually 5 days.

3.What payment methods are accepted for NZX15X,133?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX15X,133 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NZX15X,133?

NZX15X,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NZX15X,133 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for NZX15X,133?

For technical support, including NZX15X,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX15X,133 requirements.

6.How does Aetrix verify that NZX15X,133 is sourced from the original manufacturer or authorized distributors?

All NZX15X,133 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that NZX15X,133 meets industry standards.

7.What is the process for return or replacement of NZX15X,133?

All NZX15X,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX15X,133, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The NZX15X,133 part is unused and in its original packaging.

Return procedure for NZX15X,133:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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