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Nexperia USA Inc. NZX22A,133
- Part No.:
- NZX22A,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
NZX22A,133.pdf
- Description:
- DIODE ZENER 21.4V 500MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:9,721
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Product details
Overview
NZX22A,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 2 mA test current, with differential resistance ≤65 Ω, reverse current ≤0.05 μA at 15.4 V, and total power dissipation up to 500 mW.
For engineers reviewing the NZX22A,133 datasheet, NZX22A,133 pinout, NZX22A,133 application, or NZX22A,133 equivalent, this device serves as a stable, low-leakage voltage reference in power supply feedback loops, overvoltage protection clamps, and analog signal conditioning where thermal stability and tight voltage tolerance are critical.
Technical Context
The NZX22A operates as a two-terminal, silicon-based Zener diode with avalanche breakdown mechanism, optimized for operation at IZ = 2 mA per its specified characteristics table. Its temperature coefficient is negative below ~5.6 V and positive above - for NZX22A, it exhibits a typical +0.085 %/°C drift across 25–150 °C, enabling predictable biasing in temperature-varying environments.
Designed for axial-leaded mounting on FR4 PCBs without thermal pads, it features Rth(j-a) = 380 K/W and Rth(j-t) = 300 K/W, supporting reliable thermal performance in ambient temperatures from −55 °C to +175 °C and junction temperatures up to 175 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22 V min / 23.3 V max at IZ = 2 mA - defines precise clamping threshold for regulation and protection circuits |
| Differential Resistance (rdif) | ≤65 Ω at IZ = 2 mA - ensures minimal output voltage variation under load current changes |
| Reverse Current (IR) | ≤0.05 μA at VR = 15.4 V - guarantees ultra-low leakage in high-impedance reference nodes |
| Total Power Dissipation (Ptot) | 500 mW at Ttp ≤ 25 °C - supports continuous operation in compact, non-heatsinked designs |
| Junction Temperature (Tj) | −65 °C to +175 °C - enables deployment in industrial and extended-temperature environments |
| Thermal Resistance (Rth(j-a)) | 380 K/W in free air - informs derating curves for ambient temperature-dependent power handling |
| Forward Voltage (VF) | ≤1.5 V at IF = 200 mA - confirms robust forward conduction capability for bidirectional protection use cases |
Pinout & Package
Package: SOD27 (SC-40), hermetically sealed axial-leaded glass package with 2 mm diameter body and 25.4 mm lead length minimum; marking band denotes cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output node or voltage reference point; reverse-biased during Zener operation |
| 2 (unbanded end) | Anode | Connected to ground or lower-potential rail; completes bias path for controlled breakdown |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid or harsh environments |
| Low differential resistance | ≤65 Ω ensures <±10 mV output shift per ±1 mA load change - critical for stable reference accuracy |
| Ultra-low reverse leakage | ≤0.05 μA at 70% of VZ preserves high-impedance node integrity in battery-powered sensor interfaces |
| Wide operating temperature range | −55 °C to +175 °C ambient rating supports deployment in automotive engine compartments and industrial controls |
| Standard axial lead form factor | Enables direct replacement in legacy through-hole designs and compatibility with wave-solder processes |
Applications
| Power Supply Feedback Regulation | Overvoltage Clamp Protection |
|---|---|
|
Use Scenario: Stabilizing output voltage in linear regulators or switching converter feedback networks using TL431-like topologies. IC Role / Device Role / Timing Role: Provides fixed reference voltage to error amplifier input, enabling closed-loop regulation accuracy within ±2%. Use Value: Tight VZ tolerance (22.0–23.3 V) and low rdif minimize output ripple and improve load regulation by >15% vs. generic Zeners. |
Use Scenario: Protecting microcontroller I/O pins or ADC inputs from transient surges exceeding 24 V. IC Role / Device Role / Timing Role: Acts as shunt clamp, conducting excess energy to ground when input exceeds 22 V threshold. Use Value: Low leakage (<0.05 μA) prevents signal attenuation in high-Z sensing paths; 500 mW rating handles 100 ms transients at 25 mA. |
| Precision Analog Reference | Temperature-Stable Bias Generator |
|
Use Scenario: Generating stable 22 V reference for DAC output buffers or op-amp gain-setting networks. IC Role / Device Role / Timing Role: Supplies low-noise, low-drift voltage source independent of supply variations. Use Value: +0.085 %/°C TC and 380 K/W Rth(j-a) limit drift to <±120 mV over −40 to +85 °C ambient - sufficient for 12-bit system accuracy. |
Use Scenario: Setting collector current in discrete transistor amplifiers requiring thermally compensated bias points. IC Role / Device Role / Timing Role: Delivers predictable forward voltage drop and stable reverse breakdown for dual-role biasing. Use Value: Forward VF ≤1.5 V at 200 mA and reverse VZ stability enable simultaneous use in emitter-follower and clamp configurations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C22 | VZ = 22 V ±5%, rdif ≤70 Ω, Ptot = 500 mW, DO-35 package | Higher leakage (≤100 nA at 17.6 V), less stable TC (±0.09 %/°C), larger DO-35 footprint | Select for cost-sensitive, non-critical regulation where size and long-term drift are secondary |
| 1N4748A | VZ = 22 V ±5%, rdif ≤20 Ω, Ptot = 1 W, DO-41 package | Higher power rating but larger size and higher leakage (≤5 μA at 17.6 V); not hermetically sealed | Select when >500 mW surge handling is required and board space allows DO-41 mounting |
Compared with BZX55C22 and 1N4748A, NZX22A,133 offers superior long-term stability via hermetic sealing, lower leakage for high-impedance references, and tighter thermal resistance control - making it optimal for precision analog and extended-life industrial deployments.
Availability
NZX22A,133 is available at Aetrix Electronics and suitable for power supply feedback regulation, overvoltage clamp protection, and precision analog reference applications requiring stable component supply, traceable sourcing, and lifecycle continuity.
Supply support for NZX22A,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 solutions for automotive, industrial, and consumer markets with focus on efficiency and miniaturization.
The NZX series targets general-purpose Zener regulation with hermetic reliability and tight parametric control - engineered specifically for analog reference, voltage clamping, and biasing in space-constrained, thermally demanding systems.
FAQ
What is the maximum continuous reverse current the NZX22A,133 can sustain without degradation?
The NZX22A,133 is rated for continuous operation at up to 250 mA forward current and 500 mW total power dissipation. In reverse (Zener) mode, sustained current must be limited by external series resistance to ensure junction temperature remains ≤175 °C - at 22 V, this corresponds to ≤22.7 mA average DC current with adequate PCB copper area or forced airflow.
Does the NZX22A,133 meet automotive AEC-Q200 requirements?
No. The NZX22A,133 is explicitly designated as a non-automotive qualified product in Nexperia's official documentation. It has not undergone AEC-Q200 stress testing and lacks automotive-grade qualification - use in automotive applications requires customer validation and full liability assumption per Nexperia's legal disclaimers.
How does the thermal resistance of NZX22A,133 affect its derating curve at elevated ambient temperatures?
With Rth(j-a) = 380 K/W on FR4 without metallization, the device must be derated linearly: at 70 °C ambient, maximum allowable power drops to ~315 mW; at 125 °C, it falls to ~150 mW. Derating follows Pmax = (175 − Tamb) / 380, ensuring Tj stays within absolute maximum limits.
Can NZX22A,133 be used in bidirectional ESD protection configurations?
No. As a single Zener diode with asymmetric breakdown (22 V reverse, ~1.5 V forward), it provides unidirectional clamping only. For bidirectional ESD protection, a dedicated TVS diode such as PESD5V0S1BA or dual-Zener back-to-back configuration is required - NZX22A,133 lacks symmetrical response and specified ESD pulse handling capability.
NZX22A,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):
- 21.4 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
NZX22A,133 FAQ
1.How can I place an order for NZX22A,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for NZX22A,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 NZX22A,133 reliable?
The price and inventory of NZX22A,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX22A,133 is usually 5 days.
3.What payment methods are accepted for NZX22A,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX22A,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZX22A,133?
NZX22A,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZX22A,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 NZX22A,133?
For technical support, including NZX22A,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX22A,133 requirements.
6.How does Aetrix verify that NZX22A,133 is sourced from the original manufacturer or authorized distributors?
All NZX22A,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 NZX22A,133 meets industry standards.
7.What is the process for return or replacement of NZX22A,133?
All NZX22A,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX22A,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 NZX22A,133 part is unused and in its original packaging.
Return procedure for NZX22A,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NZX22A,133 Tags
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