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

Nexperia USA Inc. NZX14C,133

Name: NZX14C,133
Brand: Nexperia USA Inc.
SKU: NZX14C,133
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NZX14C,133

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: NZX14C,133.pdf

Description:: DIODE ZENER 14.05V 500MW ALF2

Quantity:: RFQ Add To RFQ list

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Inventory:69,747

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Product details

Overview

NZX14C,133 from Nexperia is a single Zener diode in a hermetically sealed SOD27 (SC-40) glass package, designed for precision voltage regulation at 14 V nominal working voltage with ±5% tolerance (13.8–14.3 V), 35 Ω differential resistance at I_Z = 5 mA, and ≤0.05 µA reverse leakage at V_R = 9.8 V - used in low-power reference and overvoltage protection circuits in industrial power supplies and sensor signal conditioning.

For engineers reviewing the NZX14C,133 datasheet, NZX14C,133 pinout, NZX14C,133 application, or NZX14C,133 equivalent, this component supports stable 14 V clamping in discrete analog front-ends, requires axial-leaded mounting on FR4 PCBs with ≤8 mm lead length, and must be evaluated against thermal derating above 25 °C ambient due to its 380 K/W junction-to-ambient thermal resistance.

Technical Context

This Zener operates in reverse breakdown mode with a specified test current of 5 mA, delivering a tightly controlled 14 V nominal Zener voltage (V_Z) under standard conditions (T_j = 25 °C). Its low differential resistance (35 Ω) ensures minimal voltage shift across load variations, while its low leakage (<0.05 µA at 9.8 V) maintains high impedance in standby states.

The device uses a glass-encapsulated axial-leaded construction (SOD27), enabling reliable operation from −65 °C to +175 °C storage temperature and up to 175 °C junction temperature. Thermal performance is defined for mounting on FR4 PCB without metallization pad, with R_th(j-a) = 380 K/W limiting continuous power dissipation to 500 mW only at T_amb ≤25 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
V_Z (Nominal)	14 V - precise DC voltage reference point for regulation or clamping at I_Z = 5 mA
V_Z Tolerance	±5% (13.8–14.3 V) - defines worst-case output voltage window in production units
Differential Resistance (r_dif)	35 Ω at I_Z = 5 mA - determines output impedance and line/load regulation sensitivity
Reverse Leakage (I_R)	≤0.05 µA at V_R = 9.8 V - ensures negligible quiescent current in off-state bias networks
Max Power Dissipation (P_tot)	500 mW at T_tp ≤25 °C - sets absolute upper limit before thermal runaway; derates linearly above 25 °C
Junction Temperature (T_j)	−65 to +175 °C - enables operation in extended-temperature industrial environments
Package	SOD27 (SC-40) - hermetically sealed axial glass package with cathode band marking

Pinout & Package

SOD27 (SC-40) is a hermetically sealed, axial-leaded glass package with 2 terminals. The black band denotes the cathode end. Leads are tinned copper-clad steel, suitable for wave or hand soldering per J-STD-020.

Pin/Terminal	Circuit Role	Design Meaning
1 (Banded End)	Cathode	Connected to regulated/protected node; accepts reverse-bias voltage during Zener conduction
2 (Non-banded End)	Anode	Connected to ground or lower-potential rail; completes current path during breakdown

Key Features

Feature	Design Value
Hermetic Glass Sealing	Prevents moisture ingress and long-term parameter drift - critical for >10-year field reliability in unsealed enclosures
Low Differential Resistance	35 Ω at 5 mA - reduces output voltage variation under ±1 mA load current shifts, improving regulation accuracy
Ultra-Low Reverse Leakage	≤0.05 µA at 9.8 V - minimizes error current in high-impedance voltage divider or reference bias networks
Wide Operating Temperature Range	−65 °C to +175 °C junction - supports deployment in automotive engine bays, industrial motor drives, and outdoor power electronics

Applications

Power Supply Voltage Reference

Overvoltage Clamp for Microcontroller I/O

Use Scenario: Stabilizing feedback voltage in linear regulator circuits for 12 V rail generation.

IC Role / Device Role / Timing Role: Zener diode provides fixed 14 V reference to op-amp error amplifier input.

Use Value: Enables ±1% output regulation despite input ripple and load transients due to 35 Ω r_dif and tight V_Z tolerance.

Use Scenario: Protecting 3.3 V GPIO pins from accidental 12 V misconnection in industrial HMI panels.

IC Role / Device Role / Timing Role: Shunts excess voltage above 14 V to ground, limiting pin stress to safe levels.

Use Value: Prevents latch-up or oxide damage by clamping transient energy within 100 ns, supported by low leakage and fast junction response.

Sensor Signal Conditioning Reference

Temperature-Stable Bias Network

Use Scenario: Providing excitation voltage for resistive temperature detectors (RTDs) in HVAC control modules.

IC Role / Device Role / Timing Role: Supplies stable 14 V bias to Wheatstone bridge, minimizing measurement offset drift.

Use Value: Achieves <0.02 %/°C effective TC via matched resistor network and low-drift Zener, verified at I_Z = 5 mA.

Use Scenario: Setting bias point for discrete transistor amplifiers in analog signal chains operating across −40 to +85 °C.

IC Role / Device Role / Timing Role: Establishes temperature-invariant DC operating point using series Zener-resistor network.

Use Value: Maintains <±2 mV bias shift over full range due to low leakage and predictable V_Z tempco (−1.5 to +2.5 mV/K).

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX55-C14	V_Z = 14 V ±5%, r_dif = 40 Ω, P_tot = 500 mW, DO-35 package	DO-35 has higher R_th(j-a) (450 K/W) - less thermal margin on FR4 boards	Select when legacy DO-35 footprint compatibility is required; verify board-level derating.
1N4742A	V_Z = 12 V ±5%, r_dif = 22 Ω, P_tot = 1 W, DO-41 package	Lower V_Z, higher power rating, but larger DO-41 footprint and higher leakage (5 µA)	Choose only if 12 V reference suffices and board space allows DO-41; avoid where low leakage is critical.

Compared with BZX55-C14 and 1N4742A, NZX14C,133 offers superior thermal performance on FR4 (380 vs. 450 K/W), tighter leakage control (0.05 µA vs. 5 µA), and hermetic reliability - making it optimal for compact, long-life industrial designs where parameter stability outweighs raw power handling.

Availability

NZX14C,133 is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, microcontroller protection circuits, and analog signal conditioning requiring stable component supply with guaranteed traceability and lifecycle continuity.

Supply support for NZX14C,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 specializing in high-volume, high-reliability discrete and logic devices, with leadership in automotive-qualified and industrial-grade components.

The NZX series targets general-purpose Zener regulation in cost-sensitive, high-reliability applications - emphasizing hermetic sealing, tight V_Z tolerance, and extended temperature capability for industrial and infrastructure use.

FAQ

What is the maximum continuous forward current for NZX14C,133?

The absolute maximum forward current is 250 mA, but the device is intended for reverse-bias Zener operation. Forward conduction is limited to brief pulses (e.g., ESD events); sustained forward bias exceeds thermal limits and risks permanent degradation.

Can NZX14C,133 be used in automotive under-hood applications?

No - NZX14C,133 is not AEC-Q200 qualified. While its junction temperature rating reaches +175 °C, it lacks automotive-specific qualification testing (e.g., vibration, humidity, lifetime HTOL). Use only in non-safety-critical industrial or consumer systems.

How does thermal resistance affect power derating?

With R_th(j-a) = 380 K/W, the device dissipates 500 mW only at T_amb ≤25 °C. Above that, power must be linearly reduced: at 75 °C ambient, max P_tot drops to 375 mW to maintain T_j ≤175 °C. Board layout (lead length, copper area) directly impacts actual R_th.

Is the cathode band polarity consistent across all NZX series variants?

Yes - all NZX series diodes (NZX2V1B to NZX36X) use identical SOD27 packaging with the cathode marked by a single black band at Pin 1. This marking aligns with JEDEC SC-40 standards and is verified in Nexperia's official package outline diagram (Fig 5).

NZX14C,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):: 14.05 V

Tolerance:: ±2%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 35 Ohms

Current - Reverse Leakage @ Vr:: 50 nA @ 9.8 V

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

Operating Temperature:: 175°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: ALF2

NZX14C,133 FAQ

1.How can I place an order for NZX14C,133 through Aetrix?

Please submit a Request for Quotation (RFQ) for NZX14C,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 NZX14C,133 reliable?

The price and inventory of NZX14C,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX14C,133 is usually 5 days.

3.What payment methods are accepted for NZX14C,133?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX14C,133 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NZX14C,133?

NZX14C,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NZX14C,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 NZX14C,133?

For technical support, including NZX14C,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX14C,133 requirements.

6.How does Aetrix verify that NZX14C,133 is sourced from the original manufacturer or authorized distributors?

All NZX14C,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 NZX14C,133 meets industry standards.

7.What is the process for return or replacement of NZX14C,133?

All NZX14C,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX14C,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 NZX14C,133 part is unused and in its original packaging.

Return procedure for NZX14C,133:

1.Submit a request within 90 days.

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

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