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Nexperia USA Inc. NZX36A,133
- Part No.:
- NZX36A,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
NZX36A,133.pdf
- Description:
- DIODE ZENER 34.95V 500MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:10,003
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Product details
Overview
NZX36A,133 from Nexperia is a single Zener diode in a hermetically sealed SOD27 (SC-40) axial glass package, designed for precision voltage regulation at 36 V nominal Zener voltage (VZ = 34.2–35.7 V @ IZ = 2 mA), with 140 Ω typical differential resistance, ≤0.05 µA reverse leakage at 25.2 V, and 500 mW total power dissipation. It serves as a stable reference or clamp in low-power analog supply rails and overvoltage protection circuits.
For engineers reviewing the NZX36A,133 datasheet, NZX36A,133 pinout, NZX36A,133 application, or NZX36A,133 equivalent, this device is selected for its low thermal resistance (Rth(j-a) = 380 K/W), tight VZ tolerance, and robust hermetic sealing-key considerations for industrial sensor interfaces, legacy power monitoring, and high-reliability linear regulator feedback paths.
Technical Context
This Zener operates in reverse breakdown mode with a specified test current of 2 mA, delivering stable regulation across ambient temperatures from −55 °C to +175 °C. Its junction temperature rating reaches 175 °C, and it exhibits a negative temperature coefficient typical of mid-to-high-voltage Zeners in this series.
The SOD27 package enables axial through-hole mounting on FR4 PCBs without thermal pads, with maximum lead length of 8 mm. Thermal resistance from junction to ambient is 380 K/W in free air-critical for derating calculations in unforced convection environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VZ (Zener Voltage) | 34.2–35.7 V @ IZ = 2 mA - defines precise clamping threshold for 36 V nominal rail protection |
| rdif (Differential Resistance) | 140 Ω max - ensures minimal output voltage shift under load variation in reference applications |
| IR (Reverse Leakage) | ≤0.05 µA @ VR = 25.2 V - guarantees negligible standby current in battery-backed or ultra-low-power circuits |
| Ptot (Total Power Dissipation) | 500 mW @ Ttp ≤ 25 °C - sets maximum continuous DC power handling before thermal derating applies |
| Rth(j-a) | 380 K/W - determines junction temperature rise above ambient under steady-state bias (e.g., +190 °C rise at 500 mW) |
| Tj (Junction Temperature) | −65 to +175 °C - supports operation in extended-temperature industrial and automotive under-hood environments |
Pinout & Package
The NZX36A,133 uses a two-terminal axial-leaded SOD27 (SC-40) hermetically sealed glass package. The cathode is marked by a band on the glass body; leads are tinned copper alloy suitable for wave or hand soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; reverse-biased terminal where Zener breakdown occurs |
| 2 (Unbanded End) | Anode | Connected to ground or lower-potential reference; completes reverse-bias path for regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift-essential for >10-year field reliability in industrial controls |
| Low differential resistance | 140 Ω max ensures <±15 mV output shift per ±2 mA load change-enables stable reference in analog front-ends |
| Low leakage current | ≤0.05 µA at 70% VZ minimizes error in high-impedance divider networks used in precision sensing |
| Wide operating temperature range | −55 °C to +175 °C junction rating allows deployment in motor drives, power supplies, and downhole instrumentation |
Applications
| Industrial Sensor Signal Conditioning | Legacy 36 V DC Power Monitoring |
|---|---|
|
Use Scenario: Stabilizing reference voltage for 4–20 mA transmitter ICs in process automation transmitters. IC Role / Device Role / Timing Role: Zener diode provides fixed 36 V reference for op-amp biasing and current loop compliance voltage setting. Use Value: Tight VZ tolerance (±1.5 V) and low rdif ensure loop accuracy remains within 0.1% F.S. across temperature. |
Use Scenario: Overvoltage clamp on 36 V battery-backed PLC I/O modules exposed to load-dump transients. IC Role / Device Role / Timing Role: Acts as shunt protector limiting rail voltage to 35.7 V during surge events. Use Value: Hermetic seal prevents parametric shift after repeated 100 ms surges-maintains clamping consistency over 100k cycles. |
| Linear Regulator Feedback Network | High-Temperature Analog Front-End Reference |
|
Use Scenario: Setting output voltage of discrete NPN pass-transistor regulators in HVAC control boards. IC Role / Device Role / Timing Role: Zener establishes stable VREF in resistive divider driving transistor base. Use Value: 175 °C max Tj rating permits operation inside sealed enclosures reaching +125 °C ambient without derating. |
Use Scenario: Providing reference for RTD-to-digital converters in oil & gas downhole tools. IC Role / Device Role / Timing Role: Supplies excitation and reference voltage for Wheatstone bridge measurement circuitry. Use Value: ≤0.05 µA leakage avoids measurable offset in 10 MΩ bridge arms-preserves 16-bit measurement integrity. |
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 (ON Semiconductor) | VZ = 35–37 V @ 5 mA; rdif = 150 Ω; Ptot = 500 mW; DO-35 package | Higher test current (5 mA) shifts operating point; DO-35 has higher Rth(j-a) (450 K/W) | Acceptable where board space allows DO-35 and thermal margin exceeds 70 K/W |
| 1N5255B (Microchip) | VZ = 34–36 V @ 20 mA; rdif = 110 Ω; Ptot = 500 mW; DO-35 | Requires 10× higher test current-unsuitable for low-current bias networks | Only viable in high-current shunt regulator designs with ≥20 mA available |
Compared with BZX55-C36 and 1N5255B, NZX36A,133 offers superior low-current stability (2 mA test point), lower thermal resistance in axial form factor, and hermetic reliability-making it preferred for precision, low-power, and extended-temperature deployments.
Availability
NZX36A,133 is available at Aetrix Electronics and suitable for industrial sensor conditioning, 36 V DC power monitoring, and linear regulator feedback networks requiring stable component supply with guaranteed long-term parametric consistency.
Supply support for NZX36A,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 tight parametric control for legacy and mission-critical analog systems.
FAQ
What is the maximum continuous reverse voltage that can be safely applied to NZX36A,133 without breakdown?
The device is rated for a maximum reverse voltage of 25.2 V prior to entering Zener breakdown-this is the VR value specified in Table 9. Applying more than 25.2 V continuously will cause conduction and potential thermal runaway unless current is strictly limited below the 500 mW dissipation limit.
Can NZX36A,133 be used in surface-mount designs?
No-it is exclusively packaged in the axial-leaded SOD27 (SC-40) glass case and requires through-hole mounting. There is no SMD variant in the NZX series; for surface-mount equivalents, consider Nexperia's BZX384 or PZM series Zeners with compatible VZ.
How does the temperature coefficient behave near 36 V nominal Zener voltage?
At 36 V, the NZX series exhibits a negative temperature coefficient (TC) of approximately −0.05 %/°C, meaning VZ decreases slightly as temperature rises. This is confirmed in Figure 4 of the datasheet for the 30–36 V range, where TC trends downward with increasing IZ.
Is NZX36A,133 suitable for automotive applications?
No-the datasheet explicitly states "Non-automotive qualified products" and confirms no AEC-Q200 qualification or automotive testing was performed. It must not be used in safety-critical or automotive powertrain systems without additional validation and risk assumption by the customer.
NZX36A,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):
- 34.95 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
NZX36A,133 FAQ
1.How can I place an order for NZX36A,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for NZX36A,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 NZX36A,133 reliable?
The price and inventory of NZX36A,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX36A,133 is usually 5 days.
3.What payment methods are accepted for NZX36A,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX36A,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZX36A,133?
NZX36A,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZX36A,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 NZX36A,133?
For technical support, including NZX36A,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX36A,133 requirements.
6.How does Aetrix verify that NZX36A,133 is sourced from the original manufacturer or authorized distributors?
All NZX36A,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 NZX36A,133 meets industry standards.
7.What is the process for return or replacement of NZX36A,133?
All NZX36A,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX36A,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 NZX36A,133 part is unused and in its original packaging.
Return procedure for NZX36A,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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