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Nexperia USA Inc. NZX30X,133
- Part No.:
- NZX30X,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
NZX30X,133.pdf
- Description:
- DIODE ZENER 29.76V 500MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:18,837
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Product details
Overview
NZX30X,133 from Nexperia is a single Zener diode in a hermetically sealed SOD27 (SC-40) glass package, designed for precision voltage regulation at 30 V nominal working voltage with ±5% tolerance (28.2–30.6 V), 100 Ω differential resistance at IZ = 2 mA, and ≤0.05 µA reverse leakage current. It delivers stable reference performance in low-power analog circuits, power supply feedback paths, and overvoltage protection nodes where thermal stability and long-term reliability are critical.
For engineers reviewing the NZX30X,133 datasheet, NZX30X,133 pinout, NZX30X,133 application, or NZX30X,133 equivalent, this device serves as a low-leakage, low-drift 30 V Zener reference with verified thermal resistance (Rth(j-a) = 380 K/W), axial-leaded SOD27 packaging, and compatibility with FR4 PCB mounting without metallization pads - key selection criteria for industrial sensor conditioning and regulated bias networks.
Technical Context
This Zener operates in reverse breakdown mode with a specified test current of 2 mA, delivering a tightly controlled 30 V nominal Zener voltage across its cathode-anode terminals. Its low differential resistance (100 Ω) ensures minimal voltage variation under load changes, while its ultra-low reverse leakage (<0.05 µA at VR = 21 V) supports high-impedance reference node integrity.
The device uses a hermetically sealed glass package to maintain parameter stability over temperature (−65 °C to +175 °C storage, −55 °C to +175 °C ambient) and lifetime. Thermal resistance from junction to ambient (380 K/W) is characterized on standard FR4 PCB with 8 mm max lead length, enabling accurate power derating in non-heatsinked applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 28.2–30.6 V at IZ = 2 mA - defines precise regulation point for feedback or clamping circuits |
| Differential Resistance (rdif) | 100 Ω max at IZ = 2 mA - ensures <±30 mV output shift per ±3 mA load change |
| Reverse Leakage Current (IR) | ≤0.05 µA at VR = 21 V - preserves high-impedance node accuracy in battery-powered systems |
| Total Power Dissipation (Ptot) | 500 mW at Ttp ≤ 25 °C - supports continuous operation up to 16.7 mA at 30 V without forced cooling |
| Junction Temperature (Tj) | −65 °C to +175 °C - enables deployment in extended-temperature industrial environments |
| Package | SOD27 (SC-40) - axial-leaded, hermetically sealed glass housing for moisture and contamination immunity |
| Thermal Resistance (Rth(j-a)) | 380 K/W in free air on FR4 - allows direct thermal modeling for ambient-limited power handling |
Pinout & Package
SOD27 (SC-40) is a small, axial-leaded, hermetically sealed glass package with 2 leads. The black band on the body identifies the cathode terminal.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output or voltage reference node; reverse-biased during Zener operation |
| 2 (non-banded end) | Anode | Connected to ground or lower-potential rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents parameter drift due to humidity or atmospheric contaminants over 15+ year service life |
| Low differential resistance | 100 Ω max ensures <±0.3% voltage deviation across ±10% load current variation |
| Ultra-low leakage current | ≤0.05 µA at 70% of VZ maintains reference accuracy in high-Z op-amp input stages |
| Wide operating temperature range | −55 °C to +175 °C ambient rating supports use in motor control enclosures and outdoor instrumentation |
| Standard axial-leaded form factor | SOD27 footprint enables manual soldering, wave soldering, and compatibility with legacy through-hole PCB designs |
Applications
| Industrial Sensor Signal Conditioning | Switch-Mode Power Supply Feedback |
|---|---|
|
Use Scenario: Providing stable 30 V reference for bridge sensor excitation and instrumentation amplifier biasing in factory-floor pressure transmitters. IC Role / Device Role / Timing Role: Zener diode functions as primary voltage reference source, directly setting excitation voltage and offset null points. Use Value: Low 100 Ω rdif and <0.05 µA leakage ensure <0.02% full-scale error contribution across −25 °C to +85 °C operating range. |
Use Scenario: Regulating optocoupler LED current in isolated flyback converter feedback loop to maintain ±1% output voltage accuracy. IC Role / Device Role / Timing Role: Zener sets precise threshold for TL431-like shunt regulator action, defining error amplifier trip point. Use Value: Tight 28.2–30.6 V VZ tolerance and stable thermal coefficient minimize line/load regulation drift over temperature. |
| Overvoltage Protection Clamping | Programmable Threshold Detection |
|
Use Scenario: Clamping transient surges on 24 V DC control bus in PLC I/O modules to protect downstream logic inputs. IC Role / Device Role / Timing Role: Zener acts as passive crowbar element, conducting above 30.6 V to divert excess energy to ground. Use Value: 500 mW Ptot rating and 380 K/W Rth(j-a) allow safe dissipation of 100 ms, 1 A surge events without thermal runaway. |
Use Scenario: Setting comparator trip threshold in battery management system for 30 V LiFePO4 string overvoltage alarm. IC Role / Device Role / Timing Role: Zener provides fixed reference voltage to non-inverting input of comparator for deterministic threshold detection. Use Value: Hermetic SOD27 construction prevents long-term VZ drift, ensuring consistent alarm triggering over 10-year field deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55-C30 | Same 30 V nominal, but ±5% tolerance and higher rdif (150 Ω); plastic DO-35 package | Limited to commercial-temp applications (−65 °C to +175 °C not guaranteed); lower moisture resistance | Select when cost sensitivity outweighs hermeticity and extended temperature needs |
| 1N4749A | 30 V nominal, ±5%, but higher leakage (1 µA at 21 V) and larger DO-41 package | Higher thermal resistance (500 K/W) limits power handling on compact PCBs | Choose only if existing DO-41 footprint reuse is mandatory and leakage budget permits |
Compared with BZX55-C30 and 1N4749A, NZX30X,133 offers superior long-term stability via hermetic sealing, tighter thermal resistance control (380 K/W), and lower leakage - making it preferred for industrial-grade reference and protection circuits where parameter drift must be minimized.
Availability
NZX30X,133 is available at Aetrix Electronics and suitable for industrial sensor signal conditioning, switch-mode power supply feedback, overvoltage protection clamping, and programmable threshold detection requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for NZX30X,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 focused on 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 harsh environments, emphasizing hermetic sealing, wide temperature capability, and parametric stability for industrial and infrastructure applications.
FAQ
What is the maximum continuous Zener current for NZX30X,133 at 25 °C ambient?
At Tamb = 25 °C, the maximum continuous Zener current is 16.7 mA, calculated from Ptot = 500 mW and VZ ≈ 30 V. This assumes no additional thermal resistance beyond the specified 380 K/W junction-to-ambient value on FR4 PCB with 8 mm leads.
Does NZX30X,133 have automotive qualification?
No. NZX30X,133 is not automotive-qualified. The datasheet explicitly states that unless otherwise indicated, Nexperia products are not qualified or tested to automotive standards (AEC-Q101, ISO/TS 16949). It is intended for industrial, commercial, and general-purpose applications only.
How is polarity identified on the NZX30X,133 package?
Polarity is marked by a black band on the glass body, which designates Pin 1 (cathode). When viewed with the banded end on the left, the right-hand lead is the anode. This matches the standard SOD27 pinning diagram in the Nexperia datasheet Rev. 4.
Can NZX30X,133 be used in surface-mount designs?
No. NZX30X,133 is exclusively available in the axial-leaded SOD27 (SC-40) through-hole package. It has no surface-mount variant. For SMT Zener alternatives, consider Nexperia's BZX384 or PZM series, which offer comparable voltage ratings in SOT23 or SOD323 packages.
NZX30X,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):
- 29.76 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 21 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
NZX30X,133 FAQ
1.How can I place an order for NZX30X,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for NZX30X,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 NZX30X,133 reliable?
The price and inventory of NZX30X,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX30X,133 is usually 5 days.
3.What payment methods are accepted for NZX30X,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX30X,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZX30X,133?
NZX30X,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZX30X,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 NZX30X,133?
For technical support, including NZX30X,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX30X,133 requirements.
6.How does Aetrix verify that NZX30X,133 is sourced from the original manufacturer or authorized distributors?
All NZX30X,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 NZX30X,133 meets industry standards.
7.What is the process for return or replacement of NZX30X,133?
All NZX30X,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX30X,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 NZX30X,133 part is unused and in its original packaging.
Return procedure for NZX30X,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NZX30X,133 Tags
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