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

Nexperia USA Inc. NZX30C,133

Name: NZX30C,133
Brand: Nexperia USA Inc.
SKU: NZX30C,133
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NZX30C,133

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: NZX30C,133.pdf

Description:: DIODE ZENER 30V 500MW ALF2

Quantity:: RFQ Add To RFQ list

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Inventory:230,000

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Product details

Overview

NZX30C,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 (28.2–31.6 V), 100 Ω differential resistance at I_Z = 2 mA, and ≤0.05 µA reverse leakage current. It delivers stable reference performance in low-power analog circuits, power supply feedback loops, and overvoltage protection stages.

For engineers reviewing the NZX30C,133 datasheet, NZX30C,133 pinout, NZX30C,133 application, or NZX30C,133 equivalent, this component supports design validation of 30 V Zener-based clamping, voltage reference stability under 2 mA test current, thermal derating on FR4 PCBs, and axial-leaded discrete selection for legacy or high-reliability board layouts.

Technical Context

This Zener diode operates in reverse breakdown mode with a specified nominal Zener voltage of 30 V at I_Z = 2 mA, exhibiting a temperature coefficient near zero at that bias point per typical curves. Its hermetic glass construction ensures long-term parameter stability and low moisture-induced drift.

The device complies with IEC 60134 absolute maximum ratings, supports continuous operation up to T_j = 175 °C, and features R_th(j-a) = 380 K/W in free air-enabling predictable thermal design on standard FR4 without copper pour.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	30 V nominal, min 28.2 V / max 31.6 V at I_Z = 2 mA - defines precise clamping threshold in regulation circuits
Differential Resistance (r_dif)	100 Ω max at I_Z = 2 mA - determines output impedance and regulation sensitivity to load changes
Reverse Leakage Current (I_R)	≤0.05 µA at V_R = 21 V - ensures minimal standby power loss in high-impedance reference nodes
Total Power Dissipation (P_tot)	500 mW at T_tp ≤ 25 °C - sets maximum continuous DC power handling before thermal derating applies
Junction Temperature (T_j)	−65 °C to +175 °C - enables operation in extended industrial and automotive-adjacent environments
Thermal Resistance (R_th(j-a))	380 K/W in free air - allows direct junction-to-ambient temperature rise calculation for layout cooling assessment

Pinout & Package

Package: SOD27 (SC-40), hermetically sealed axial-leaded glass package with cathode band marking; leads are tinned copper-clad steel, 25.4 mm minimum length, 0.56 mm max diameter.

Pin/Terminal	Circuit Role	Design Meaning
1 (banded end)	Cathode	Connected to regulated output node or voltage reference point; polarity must be observed for reverse-bias operation
2 (non-banded end)	Anode	Connected to ground or lower-potential rail; completes Zener conduction path during breakdown

Key Features

Feature	Design Value
Hermetic glass sealing	Prevents parameter shift due to humidity ingress, supporting >20-year reliability in unsealed enclosures
Low differential resistance	100 Ω max ensures <±20 mV output variation across ±1 mA load current change at 30 V
Low leakage current	≤0.05 µA at 21 V enables use in ultra-low-power sensor biasing and battery-monitoring references
Wide operating temperature range	−65 °C to +175 °C junction rating supports deployment in under-hood, industrial control, and aerospace-qualified subsystems

Applications

Power Supply Feedback

Overvoltage Clamp

Use Scenario: Stabilizing output voltage in linear regulators or flyback SMPS feedback networks.

IC Role / Device Role / Timing Role: Zener diode provides precise 30 V reference to optocoupler input or error amplifier divider.

Use Value: Tight 30 V ±5% tolerance and low r_dif maintain ±1% output regulation accuracy across line/load variations.

Use Scenario: Protecting downstream circuitry from transient overvoltage events exceeding 30 V.

IC Role / Device Role / Timing Role: Acts as shunt clamp, conducting excess current when input exceeds 30 V breakdown threshold.

Use Value: Fast response (<100 ns) and 500 mW dissipation capability limit peak voltage to ≤31.6 V during 100 ms surges.

Voltage Reference

Signal Level Translation

Use Scenario: Generating stable 30 V reference for ADC biasing or comparator thresholds.

IC Role / Device Role / Timing Role: Provides low-drift, low-noise DC reference node independent of supply fluctuations.

Use Value: ≤0.05 µA leakage minimizes loading error on high-impedance reference dividers; hermetic seal prevents long-term drift.

Use Scenario: Shifting logic-level signals between 3.3 V/5 V domains and higher-voltage analog sections.

IC Role / Device Role / Timing Role: Clamps signal swing to 30 V rail while passing AC content via series resistor.

Use Value: 100 Ω r_dif maintains signal integrity up to 10 kHz; axial lead form factor simplifies through-hole routing.

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 plastic DO-35 package; r_dif = 120 Ω max; I_R = 0.1 µA at 21 V	Lower cost, less hermetic stability; unsuitable for high-humidity or long-life deployments	Select for cost-sensitive consumer designs where 10-year shelf life is sufficient
1N4749A	30 V nominal, DO-41 package; P_tot = 1 W; r_dif = 35 Ω; I_R = 0.1 µA at 23.5 V	Higher power handling and lower impedance, but larger footprint and non-hermetic construction	Select when >500 mW surge clamping or sub-50 Ω regulation is required

Compared with BZX55-C30 and 1N4749A, NZX30C,133 offers superior long-term parameter stability via hermetic sealing and tighter leakage control, making it preferred for industrial instrumentation and aerospace-qualified systems where calibration retention matters more than raw power capacity.

Availability

NZX30C,133 is available at Aetrix Electronics and suitable for power supply feedback, overvoltage protection, and precision voltage reference applications requiring stable component supply with traceable lot history and consistent parametric screening.

Supply support for NZX30C,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.

The NZX series targets general-purpose Zener regulation in harsh environments, emphasizing hermetic stability, wide temperature operation, and tight voltage tolerances for industrial and legacy system upgrades.

FAQ

What is the Zener voltage tolerance for NZX30C,133?

The NZX30C,133 has a nominal Zener voltage of 30 V with a guaranteed tolerance of ±5%, corresponding to a minimum of 28.2 V and maximum of 31.6 V when tested at I_Z = 2 mA and T_j = 25 °C. This tolerance remains valid across the full −65 °C to +175 °C junction temperature range per characterization data.

Can NZX30C,133 be used in surface-mount designs?

No-NZX30C,133 uses an axial-leaded SOD27 (SC-40) glass package intended exclusively for through-hole mounting. It lacks solder pads or gull-wing leads required for reflow assembly. For SMT equivalents, consider Nexperia's BZX384-C30 (SOT-23) or PZM30B (SOT-323), which differ in thermal performance and leakage specs.

How does thermal resistance affect its power handling on PCB?

With R_th(j-a) = 380 K/W in free air and a 500 mW total power rating at T_tp ≤ 25 °C, junction temperature rises ~190 °C at full power-exceeding the 175 °C limit. Derating is mandatory: at 70 °C ambient, max continuous power drops to ~275 mW to maintain T_j ≤ 175 °C.

Is NZX30C,133 automotive-qualified?

No-this part is not automotive-qualified. The datasheet explicitly states "Non-automotive qualified products" and excludes AEC-Q101 testing or qualification. It may be used in non-safety-critical automotive subsystems only if fully validated by the customer, with no warranty or liability assumed by Nexperia for such use.

NZX30C,133 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: -

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

Packaging:: Bulk

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 30 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

NZX30C,133 FAQ

1.How can I place an order for NZX30C,133 through Aetrix?

Please submit a Request for Quotation (RFQ) for NZX30C,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 NZX30C,133 reliable?

The price and inventory of NZX30C,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX30C,133 is usually 5 days.

3.What payment methods are accepted for NZX30C,133?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX30C,133 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NZX30C,133?

NZX30C,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NZX30C,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 NZX30C,133?

For technical support, including NZX30C,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX30C,133 requirements.

6.How does Aetrix verify that NZX30C,133 is sourced from the original manufacturer or authorized distributors?

All NZX30C,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 NZX30C,133 meets industry standards.

7.What is the process for return or replacement of NZX30C,133?

All NZX30C,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX30C,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 NZX30C,133 part is unused and in its original packaging.

Return procedure for NZX30C,133:

1.Submit a request within 90 days.

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

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