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

Nexperia USA Inc. NZX36C,133

Name: NZX36C,133
Brand: Nexperia USA Inc.
SKU: NZX36C,133
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NZX36C,133

Manufacturer:: Nexperia USA Inc.

Category:: Single Zener Diodes

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

Datasheet:: NZX36C,133.pdf

Description:: DIODE ZENER 37.2V 500MW ALF2

Quantity:: RFQ Add To RFQ list

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Inventory:6,178

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Product details

Overview

NZX36C,133 from Nexperia is a single Zener diode in a hermetically sealed SOD27 (SC-40) glass package, designed for precision voltage regulation at 36 V nominal working voltage with ±5% tolerance, 140 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 NZX36C,133 datasheet, NZX36C,133 pinout, NZX36C,133 application, or NZX36C,133 equivalent, this device serves as a low-leakage, low-thermal-drift Zener reference for industrial sensor signal conditioning, DC-DC converter feedback networks, and programmable voltage clamp circuits requiring tight voltage stability under varying temperature and load conditions.

Technical Context

This Zener diode operates in reverse breakdown mode with a specified nominal Zener voltage of 36 V at I_Z = 2 mA, exhibiting a typical temperature coefficient near +10 mV/K in its operating range. Its hermetic glass package ensures long-term parameter stability and minimal moisture-induced drift.

The device features low differential resistance (140 Ω max), enabling tight regulation under small current variations, and maintains ≤0.05 µA reverse current at VR = 25.2 V - critical for low-power standby circuits and battery-backed systems where quiescent current must be minimized.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	34.2 V to 38.0 V at I_Z = 2 mA - defines precise clamping threshold for overvoltage protection and reference generation
Differential Resistance (r_dif)	140 Ω max at I_Z = 2 mA - ensures minimal output voltage shift under load current variation
Reverse Leakage Current (I_R)	≤0.05 µA at V_R = 25.2 V - enables ultra-low standby power in always-on monitoring circuits
Total Power Dissipation (P_tot)	500 mW maximum at T_tp ≤ 25 °C - supports continuous operation in compact PCB layouts without forced cooling
Junction Temperature Range	−65 °C to +175 °C - allows deployment in extended-temperature industrial and automotive under-hood environments
Thermal Resistance (R_th(j-a))	380 K/W in free air on FR4 PCB - informs thermal design margin for ambient temperature derating

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	Cathode	Connected to regulated output node; polarity marker (band) identifies this terminal for correct orientation in series-shunt regulation
2	Anode	Connected to ground or lower-potential rail; completes reverse-bias path required for Zener conduction

Key Features

Feature	Design Value
Hermetic glass encapsulation	Eliminates parameter drift from humidity ingress, ensuring long-term Zener voltage stability in harsh environments
Low differential resistance	140 Ω max enables <±20 mV output variation across ±1 mA Zener current change - critical for high-accuracy references
Ultra-low reverse leakage	≤0.05 µA at 70% of V_Z minimizes error current in high-impedance feedback networks and extends battery life
Wide junction temperature range	−65 °C to +175 °C supports use in industrial motor drives and outdoor telecom equipment without thermal derating penalties

Applications

Industrial Sensor Signal Conditioning

DC-DC Converter Feedback Network

Use Scenario: Stabilizing reference voltage for 4–20 mA transmitter front-end circuitry exposed to −40 °C to +85 °C ambient.

IC Role / Device Role / Timing Role: Zener diode provides fixed 36 V reference for op-amp biasing and ADC input scaling.

Use Value: Low 0.05 µA leakage prevents loading of high-impedance sensor bridge outputs; 140 Ω r_dif maintains <0.5% reference accuracy across supply ripple.

Use Scenario: Setting output voltage in isolated flyback converter with optocoupler feedback loop.

IC Role / Device Role / Timing Role: Zener diode establishes precise 36 V threshold at optocoupler LED anode to regulate secondary-side output.

Use Value: Tight 34.2–38.0 V V_Z tolerance eliminates need for external trimming; hermetic seal prevents long-term calibration drift.

Overvoltage Clamp for Microcontroller I/O

Battery Backup Voltage Monitor

Use Scenario: Protecting 3.3 V MCU GPIO pins against accidental 24 V field-wiring faults in factory automation PLC modules.

IC Role / Device Role / Timing Role: Shunt clamp activated when transient exceeds 36 V, diverting surge current away from sensitive logic inputs.

Use Value: 500 mW P_tot rating sustains 100 ms transients at 100 mA; low r_dif limits clamped voltage overshoot to <39 V.

Use Scenario: Detecting end-of-life voltage drop in 36 V lithium-thionyl chloride backup battery for remote telemetry nodes.

IC Role / Device Role / Timing Role: Zener diode biased with high-value resistor forms comparator threshold for brown-out detection circuit.

Use Value: Stable 36 V reference enables ±0.5 V detection window; sub-µA leakage preserves multi-year battery runtime.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX55-C36	V_Z = 35.5–36.5 V (±2.8%), r_dif = 150 Ω max, P_tot = 500 mW, DO-35 package	Higher leakage (≤5 µA at V_R = 28.8 V) and plastic package - less stable in humid environments	Select when cost sensitivity outweighs long-term drift requirements and humidity exposure is controlled
1N5277B	V_Z = 35.2–36.8 V (±5%), r_dif = 160 Ω max, P_tot = 500 mW, DO-35 package	No hermetic seal; higher tempco (±3.5 mV/K vs. ~+10 mV/K); IR = ≤1 µA at V_R = 28.8 V	Prefer for non-critical consumer-grade designs where qualification for extended temperature or reliability is not required

Compared with BZX55-C36 and 1N5277B, NZX36C,133 offers superior long-term stability via hermetic sealing, tighter control of leakage current, and optimized thermal resistance for high-reliability industrial deployments - making it the preferred choice where parameter drift directly impacts system calibration integrity.

Availability

NZX36C,133 is available at Aetrix Electronics and suitable for industrial sensor interfaces, DC-DC converter feedback networks, overvoltage protection circuits, and battery voltage monitoring systems requiring stable component supply and traceable sourcing.

Supply support for NZX36C,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 computing markets.

NZX series Zener diodes are engineered for precision voltage reference and regulation in space-constrained, high-stability applications - emphasizing hermetic reliability, low leakage, and tight parametric control across extended temperature ranges.

FAQ

What is the maximum reverse voltage (V_R) that NZX36C,133 can withstand before breakdown?

The device exhibits a reverse breakdown voltage (V_Z) of 34.2 V to 38.0 V at I_Z = 2 mA. Its rated reverse voltage (V_R) is 25.2 V - the maximum non-breakdown voltage at which reverse leakage remains ≤0.05 µA. Exceeding V_R initiates controlled Zener conduction; operation above V_Z max is permissible only within P_tot and thermal limits.

How does the thermal resistance of NZX36C,133 affect its power handling in real-world PCB layouts?

With R_th(j-a) = 380 K/W on FR4 (no copper pad), a 500 mW dissipation raises junction temperature by 190 K above ambient. At 25 °C ambient, T_j reaches 215 °C - exceeding the 175 °C limit. Derating is mandatory: at 70 °C ambient, max continuous power drops to ~275 mW. Use of thermal vias or copper pour reduces R_th(j-a) significantly.

Can NZX36C,133 be used in series or parallel configurations for higher voltage or current capability?

Series connection is viable for higher clamping voltage (e.g., two NZX36C,133 yield ~72 V), but requires matched units to avoid unequal voltage sharing. Parallel use is not recommended due to negative temperature coefficient interaction - mismatched units cause thermal runaway. For higher current, select a higher-power Zener (e.g., BZT52-B36) instead.

Is NZX36C,133 suitable for automotive applications per AEC-Q200?

No. The NZX36C,133 is explicitly designated as non-automotive qualified in Nexperia's documentation. It lacks AEC-Q200 stress testing, automotive-grade screening, and guaranteed PPAP compliance. For automotive use, consider AEC-Q200-qualified alternatives such as BZX84-C36 or MMBZ5277B, which undergo temperature cycling, vibration, and humidity testing.

NZX36C,133 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: NZX

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

Packaging:: Bulk

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 37.2 V

Tolerance:: ±2%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 140 Ohms

Current - Reverse Leakage @ Vr:: 50 nA @ 25.2 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

NZX36C,133 FAQ

1.How can I place an order for NZX36C,133 through Aetrix?

Please submit a Request for Quotation (RFQ) for NZX36C,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 NZX36C,133 reliable?

The price and inventory of NZX36C,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX36C,133 is usually 5 days.

3.What payment methods are accepted for NZX36C,133?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX36C,133 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NZX36C,133?

NZX36C,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NZX36C,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 NZX36C,133?

For technical support, including NZX36C,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX36C,133 requirements.

6.How does Aetrix verify that NZX36C,133 is sourced from the original manufacturer or authorized distributors?

All NZX36C,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 NZX36C,133 meets industry standards.

7.What is the process for return or replacement of NZX36C,133?

All NZX36C,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX36C,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 NZX36C,133 part is unused and in its original packaging.

Return procedure for NZX36C,133:

1.Submit a request within 90 days.

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

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