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

Nexperia USA Inc. NZX2V4A,133

Name: NZX2V4A,133
Brand: Nexperia USA Inc.
SKU: NZX2V4A,133
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NZX2V4A,133

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: NZX2V4A,133.pdf

Description:: DIODE ZENER 2.4V 500MW ALF2

Quantity:: RFQ Add To RFQ list

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Inventory:10,000

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Product details

Overview

NZX2V4A,133 from Nexperia is a single Zener diode in a hermetically sealed SOD27 (SC-40) glass package, designed for precision voltage regulation at 2.4 V nominal Zener voltage with ±0.1 V tolerance (2.3–2.5 V), 100 Ω typical differential resistance at I_Z = 5 mA, and ≤50 μA reverse leakage current at V_R = 1 V. It delivers stable reference voltage in low-power analog circuits, power supply feedback paths, and overvoltage protection stages.

For engineers reviewing the NZX2V4A,133 datasheet, NZX2V4A,133 pinout, NZX2V4A,133 application, or NZX2V4A,133 equivalent, this component serves as a cost-effective, thermally robust, axial-leaded Zener solution for fixed-voltage clamping and biasing where tight voltage tolerance and low leakage are required in industrial and consumer power management designs.

Technical Context

This device operates as a two-terminal voltage reference diode, conducting in reverse breakdown when cathode-to-anode voltage exceeds its specified Zener voltage (2.3–2.5 V at I_Z = 5 mA). Its low 100 Ω differential resistance ensures minimal voltage shift under load variation, while its 500 mW total power dissipation rating enables operation up to 208 mA at 2.4 V without derating at T_amb ≤25 °C.

Thermal performance is defined by R_th(j-a) = 380 K/W (free air), requiring careful PCB layout for sustained power handling. The marking band identifies the cathode terminal, and the device exhibits a negative temperature coefficient below 5 V, supporting predictable drift behavior in ambient-temperature-stable applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	2.3–2.5 V at I_Z = 5 mA - defines precise clamping threshold for 2.4 V nominal regulation
Differential Resistance (r_dif)	100 Ω max at I_Z = 5 mA - ensures <±24 mV output shift per ±2.4 mA current change
Reverse Leakage (I_R)	≤50 μA at V_R = 1 V - minimizes standby current in high-impedance bias networks
Total Power Dissipation (P_tot)	500 mW at T_tp ≤25 °C - supports continuous operation up to 208 mA at 2.4 V in free air
Junction Temperature (T_j)	−65 to +175 °C - enables use in extended-temperature industrial environments
Forward Voltage (V_F)	≤1.5 V at I_F = 200 mA - confirms low-loss forward conduction for dual-mode (Zener + rectifier) circuit reuse

Pinout & Package

Package: SOD27 (SC-40), hermetically sealed axial-leaded glass package with 25.4 mm minimum lead length and 4.25 mm maximum body diameter. Leads are tinned copper-clad steel, suitable for wave or hand soldering.

Pin/Terminal	Circuit Role	Design Meaning
1 (Marked Band)	Cathode	Connected to higher-potential node in reverse-bias regulation; polarity marker essential for correct orientation in PCB layout
2	Anode	Connected to lower-potential node (e.g., ground or return path); completes Zener conduction loop during breakdown

Key Features

Feature	Design Value
Hermetic glass sealing	Prevents moisture ingress and long-term parameter drift in humid or corrosive environments
Low differential resistance	100 Ω max ensures stable regulation across ±10% load current variation in feedback loops
Low leakage current	≤50 μA at 1 V reverse bias preserves accuracy in high-impedance voltage divider networks
Wide operating temperature range	−65 °C to +175 °C junction rating supports deployment in automotive engine compartments and industrial controls

Applications

Power Supply Feedback

Overvoltage Clamp

Use Scenario: Regulating output voltage of linear regulators or switching converter feedback paths.

IC Role / Device Role / Timing Role: Provides stable 2.4 V reference to error amplifier input, enabling accurate output setpoint control.

Use Value: Tight 2.3–2.5 V tolerance and low r_dif reduce output voltage error to <±1.2% under dynamic load conditions.

Use Scenario: Protecting microcontroller I/O pins from transient overvoltage events.

IC Role / Device Role / Timing Role: Acts as shunt clamp, diverting excess current when input exceeds 2.5 V.

Use Value: 500 mW P_tot rating allows absorption of short-duration surges without thermal runaway.

Bias Network Reference

Signal Level Shifting

Use Scenario: Establishing precise DC bias points for op-amp input stages or transistor amplifiers.

IC Role / Device Role / Timing Role: Supplies stable 2.4 V reference to high-impedance node, minimizing loading effects.

Use Value: ≤50 μA leakage ensures <0.1% error contribution in 1 MΩ bias networks at room temperature.

Use Scenario: Translating logic-level signals between 3.3 V and 2.4 V domains in mixed-voltage systems.

IC Role / Device Role / Timing Role: Clamps signal high level to 2.4 V while passing low level through anode-cathode path.

Use Value: Forward V_F ≤1.5 V at 200 mA enables bidirectional conduction with minimal forward drop penalty.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX55C2V4 (ON Semiconductor)	Same 2.4 V nominal V_Z, but 500 mW rating in DO-35 package; r_dif = 100 Ω max at I_Z = 5 mA; IR = 50 μA at V_R = 1 V	DO-35 axial package has larger footprint and higher R_th(j-a) (450 K/W), limiting power handling in compact layouts	Select when legacy DO-35 footprint compatibility is required and thermal margin is available
MMBZ5222BS (Diodes Inc.)	SOT-23 surface-mount package; 2.4 V V_Z, r_dif = 120 Ω max, IR = 100 μA at V_R = 1 V; P_tot = 350 mW	Lower power rating and higher leakage limit use to low-current biasing only; no axial lead mechanical robustness	Select for space-constrained PCBs where reflow assembly is mandatory and peak power <175 mA

Compared with BZX55C2V4 and MMBZ5222BS, NZX2V4A,133 offers superior thermal resistance control via axial leads and hermetic glass sealing-critical for long-term stability in high-reliability analog references-while maintaining identical electrical regulation performance at 2.4 V.

Availability

NZX2V4A,133 is available at Aetrix Electronics and suitable for power supply feedback, overvoltage protection, and precision bias network applications requiring stable component supply, consistent parametric performance, and long-lifecycle availability.

Supply support for NZX2V4A,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 for industrial, automotive, and consumer markets.

The NZX series targets general-purpose Zener regulation with hermetic glass packaging for long-term stability in non-automotive industrial and consumer applications-designed specifically for cost-sensitive, high-yield analog voltage reference needs.

FAQ

What is the maximum continuous reverse current the NZX2V4A,133 can handle at 25 °C ambient?

At T_amb = 25 °C, the NZX2V4A,133 supports up to 208 mA continuous reverse current (I_Z = P_tot/V_Z ≈ 500 mW / 2.4 V), assuming no PCB thermal enhancement. Derating begins above 25 °C per R_th(j-a) = 380 K/W, reducing usable current by ~0.26 mA/°C rise.

How does the cathode marking appear on the NZX2V4A,133 package?

The cathode is identified by a distinct color band (typically white or black) located near one end of the glass body. Pin 1 (cathode) is the lead adjacent to this band; the unmarked lead is the anode. This marking aligns with IEC 60747-2 and Nexperia's standard SOD27 orientation convention.

Can NZX2V4A,133 be used in place of a 2.4 V TL431-based shunt regulator?

No-it lacks the internal reference, error amplifier, and output transistor of the TL431. NZX2V4A,133 provides only passive Zener clamping; it cannot source regulated current or drive capacitive loads. Use only where simple voltage thresholding-not active regulation-is sufficient.

Is NZX2V4A,133 qualified for automotive applications?

No. Per Nexperia's legal disclaimers, this part is explicitly labeled "non-automotive qualified" and has not undergone AEC-Q101 stress testing or automotive-grade qualification. It must not be used in safety-critical, engine-control, or ADAS systems without independent validation and risk acceptance.

NZX2V4A,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):: 2.4 V

Tolerance:: ±4%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 100 Ohms

Current - Reverse Leakage @ Vr:: 50 µA @ 1 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

NZX2V4A,133 FAQ

1.How can I place an order for NZX2V4A,133 through Aetrix?

Please submit a Request for Quotation (RFQ) for NZX2V4A,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 NZX2V4A,133 reliable?

The price and inventory of NZX2V4A,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX2V4A,133 is usually 5 days.

3.What payment methods are accepted for NZX2V4A,133?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX2V4A,133 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NZX2V4A,133?

NZX2V4A,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NZX2V4A,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 NZX2V4A,133?

For technical support, including NZX2V4A,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX2V4A,133 requirements.

6.How does Aetrix verify that NZX2V4A,133 is sourced from the original manufacturer or authorized distributors?

All NZX2V4A,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 NZX2V4A,133 meets industry standards.

7.What is the process for return or replacement of NZX2V4A,133?

All NZX2V4A,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX2V4A,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 NZX2V4A,133 part is unused and in its original packaging.

Return procedure for NZX2V4A,133:

1.Submit a request within 90 days.

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

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