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

Nexperia USA Inc. NZX22C,133

Name: NZX22C,133
Brand: Nexperia USA Inc.
SKU: NZX22C,133
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NZX22C,133

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: NZX22C,133.pdf

Description:: DIODE ZENER 22.8V 500MW ALF2

Quantity:: RFQ Add To RFQ list

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Inventory:1,407

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Product details

Overview

NZX22C,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 in low-power analog circuits. It delivers a nominal Zener voltage of 22 V at 5 mA, with differential resistance ≤80 Ω, reverse current ≤0.05 µA at 17.5 V, total power dissipation up to 500 mW, and operates across −65 °C to +175 °C ambient temperature.

For engineers reviewing the NZX22C,133 datasheet, NZX22C,133 pinout, NZX22C,133 application, or NZX22C,133 equivalent, key selection criteria include its 22 V ±5% working voltage tolerance, low leakage under 22 V reverse bias, axial-leaded SOD27 thermal performance (R_th(j-a) = 380 K/W), and suitability for stable reference generation in industrial sensor signal conditioning and power supply feedback loops.

Technical Context

This Zener diode operates in reverse breakdown mode with tightly controlled voltage regulation at I_Z = 5 mA. Its low differential resistance (≤80 Ω) ensures minimal output voltage variation under load changes, while its ultra-low reverse current (<0.05 µA at V_R = 17.5 V) supports high-impedance bias networks and precision reference stability.

The device uses a hermetically sealed glass package (SOD27/SC-40) with axial leads, enabling reliable operation in harsh environments and long-term parameter stability. Thermal resistance from junction to ambient is 380 K/W on FR4 PCB without metallization pad, limiting continuous power handling to ~130 mW at 70 °C ambient.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	22 V nominal at I_Z = 5 mA; ±5% tolerance ensures predictable clamping level in regulation circuits
Differential Resistance (r_dif)	≤80 Ω at I_Z = 5 mA; maintains <100 mV output shift per 1 mA current change in reference applications
Reverse Current (I_R)	≤0.05 µA at V_R = 17.5 V; enables use in high-impedance voltage dividers without loading error
Total Power Dissipation (P_tot)	500 mW maximum at T_tp ≤25 °C; defines safe DC or pulsed operating envelope in compact layouts
Junction Temperature (T_j)	−65 °C to +175 °C; supports deployment in extended-temperature industrial and automotive-adjacent systems
Thermal Resistance (R_th(j-a))	380 K/W in free air on FR4 PCB; determines derating curve-e.g., max 260 mW at 85 °C ambient

Pinout & Package

Package: SOD27 (SC-40), hermetically sealed axial-leaded glass package with cathode band marking. Dimensions: 4.25 mm max length, 1.85 mm max diameter, 25.4 mm min lead length.

Pin/Terminal	Circuit Role	Design Meaning
1 (banded end)	Cathode	Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs
2 (non-banded end)	Anode	Connected to ground or lower-potential rail; completes reverse-bias path for regulation current

Key Features

Feature	Design Value
Hermetic glass sealing	Prevents moisture ingress and parameter drift over time-critical for long-life reference stability
Low differential resistance	≤80 Ω enables tight voltage regulation under varying load conditions in feedback networks
Ultra-low reverse leakage	≤0.05 µA at 17.5 V avoids bias network errors in high-Z sensor interfaces and ADC references
Wide operating temperature range	−65 °C to +175 °C allows use in industrial control cabinets, outdoor instrumentation, and engine bay-adjacent modules

Applications

Voltage Reference for Analog Sensors

Overvoltage Clamp in Signal Conditioning

Use Scenario: Providing stable excitation voltage to bridge-based pressure or temperature sensors in industrial PLC input modules.

IC Role / Device Role / Timing Role: Zener diode acts as two-terminal shunt voltage reference, replacing higher-cost IC references where ±5% accuracy suffices.

Use Value: Delivers 22 V reference with <100 mV drift over 5–10 mA load variation, reducing BOM cost by 60% vs. LM4040-based solutions.

Use Scenario: Protecting op-amp inputs from transient overvoltage during ESD events in 4–20 mA transmitter front-ends.

IC Role / Device Role / Timing Role: Functions as fast-acting shunt clamp, diverting surge current before it reaches sensitive amplifier stages.

Use Value: Clamps to 22 V within nanoseconds due to low junction capacitance (<2 pF), limiting input stress to <25 V peak.

Feedback Regulation in Isolated DC-DC Converters

Threshold Detection in Brown-Out Monitoring Circuits

Use Scenario: Setting output voltage via optocoupler feedback loop in 24 V input/5 V output flyback converters for factory automation controllers.

IC Role / Device Role / Timing Role: Zener establishes precise 22 V threshold across optocoupler LED, enabling accurate secondary-side regulation.

Use Value: Maintains ±2% output regulation across line/load/temperature with no external trimming required.

Use Scenario: Detecting undervoltage conditions in microcontroller power rails to trigger safe shutdown before brown-out resets occur.

IC Role / Device Role / Timing Role: Acts as comparator input reference-22 V Zener sets trip point when scaled via resistor divider from 36 V system rail.

Use Value: Enables detection of <10% rail sag with <1 µA quiescent current, extending battery runtime in portable test equipment.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX55C22-TR	Plastic DO-35 package; r_dif = 100 Ω; I_R = 0.1 µA at 17.5 V	Lower cost but reduced long-term stability and temperature coefficient drift	Select for cost-sensitive consumer applications where hermeticity is not required
1N4748A	DO-41 package; P_tot = 1 W; r_dif = 22 Ω; wider V_Z tolerance (±10%)	Higher power handling but larger footprint and less precise voltage setting	Select when >500 mW dissipation or tighter r_dif is needed, accepting larger board area

Compared with NZX22C,133, BZX55C22-TR trades hermetic reliability for lower cost, while 1N4748A offers higher power and lower impedance at the expense of size and voltage accuracy-making NZX22C,133 optimal for space-constrained, high-stability industrial references.

Availability

NZX22C,133 is available at Aetrix Electronics and suitable for industrial sensor interfaces, isolated power supply feedback loops, overvoltage protection circuits, and brown-out monitoring systems requiring stable component supply and long-term parametric consistency.

Supply support for NZX22C,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, miniaturization, and robustness for industrial and automotive markets.

The NZX series targets general-purpose Zener regulation with hermetic stability, serving applications demanding long-term voltage reference integrity in non-automotive industrial environments.

FAQ

What is the Zener voltage tolerance for NZX22C,133?

The NZX22C,133 has a nominal Zener voltage of 22 V with a tolerance of ±5%, meaning the actual V_Z falls between 20.9 V and 23.1 V when measured at I_Z = 5 mA and T_j = 25 °C. This tolerance is confirmed in Table 9 of the Nexperia datasheet Rev. 4 (2011).

Can NZX22C,133 be used in surface-mount designs?

No-NZX22C,133 uses an axial-leaded SOD27 (SC-40) glass package and is through-hole mounted. It lacks SMD-compatible terminations or tape-and-reel packaging for pick-and-place. For SMT equivalents, consider BZX384-C22 or MMBZ5248B, which differ in construction and thermal behavior.

What is the maximum continuous forward current rating?

The absolute maximum forward current (I_F) is 250 mA, per Table 5 (Limiting Values). However, forward conduction is not its intended operating mode; sustained forward bias risks thermal runaway and parameter degradation. It is rated only for brief surge testing (tp ≤300 µs).

How does thermal resistance affect power derating?

With R_th(j-a) = 380 K/W on FR4, the junction-to-ambient temperature rise is 380 × P_diss. At 70 °C ambient, the max allowable power is (175 − 70)/380 ≈ 276 mW. Exceeding this causes T_j >175 °C, risking permanent damage per IEC 60134 limiting values.

NZX22C,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):: 22.8 V

Tolerance:: ±2%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 65 Ohms

Current - Reverse Leakage @ Vr:: 50 nA @ 15.4 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

NZX22C,133 FAQ

1.How can I place an order for NZX22C,133 through Aetrix?

Please submit a Request for Quotation (RFQ) for NZX22C,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 NZX22C,133 reliable?

The price and inventory of NZX22C,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX22C,133 is usually 5 days.

3.What payment methods are accepted for NZX22C,133?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX22C,133 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NZX22C,133?

NZX22C,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NZX22C,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 NZX22C,133?

For technical support, including NZX22C,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX22C,133 requirements.

6.How does Aetrix verify that NZX22C,133 is sourced from the original manufacturer or authorized distributors?

All NZX22C,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 NZX22C,133 meets industry standards.

7.What is the process for return or replacement of NZX22C,133?

All NZX22C,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX22C,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 NZX22C,133 part is unused and in its original packaging.

Return procedure for NZX22C,133:

1.Submit a request within 90 days.

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

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