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Nexperia USA Inc. NZX8V2B,133
- Part No.:
- NZX8V2B,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
NZX8V2B,133.pdf
- Description:
- DIODE ZENER 8.1V 500MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:3,338
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Product details
Overview
NZX8V2B,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 at 8.2 V nominal Zener voltage with ±5% tolerance. It delivers 5 mA test current, 20 Ω typical differential resistance, ≤0.7 µA reverse leakage at 5 V, and 500 mW total power dissipation - deployed in low-power analog reference circuits and overvoltage protection stages of industrial sensor interfaces.
For engineers reviewing the NZX8V2B,133 datasheet, NZX8V2B,133 pinout, NZX8V2B,133 application, or NZX8V2B,133 equivalent, key selection criteria include Zener voltage accuracy at IZ = 5 mA, thermal resistance (Rth(j-a) = 380 K/W), axial-leaded SOD27 mechanical compatibility, and low-leakage performance under ambient temperature extremes (−55 °C to +175 °C).
Technical Context
This device operates as a two-terminal voltage reference where reverse-biased breakdown provides stable DC regulation. Its Zener voltage is specified at IZ = 5 mA with a temperature coefficient of approximately −2 mV/K near 8.2 V, and it exhibits low dynamic impedance (20 Ω typ.) ensuring minimal output variation under load transients.
The SOD27 package enables axial mounting on FR4 PCBs without thermal pads, supporting junction-to-ambient thermal resistance of 380 K/W in free air. Absolute maximum ratings include 250 mA forward current, 175 °C junction temperature, and 500 mW total power dissipation - defining safe operating boundaries for continuous and pulsed operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 7.9 V to 8.3 V at IZ = 5 mA - defines tight regulation window for 8.2 V nominal reference |
| Differential Resistance (rdif) | 20 Ω typical at IZ = 5 mA - ensures low output impedance for stable voltage under varying load |
| Reverse Leakage (IR) | ≤0.7 µA at VR = 5 V - minimizes quiescent current in battery-powered or high-impedance bias networks |
| Total Power Dissipation (Ptot) | 500 mW at Ttp ≤ 25 °C - sets maximum continuous DC power handling on standard FR4 board |
| Thermal Resistance (Rth(j-a)) | 380 K/W in free air - determines junction temperature rise per watt, critical for reliability at elevated ambient |
| Junction Temperature Range | −65 °C to +175 °C - supports operation in harsh industrial and automotive-adjacent environments |
| Forward Voltage (VF) | ≤1.5 V at IF = 200 mA - defines conduction threshold when used in polarity-protection or clamping roles |
Pinout & Package
The NZX8V2B,133 uses a hermetically sealed SOD27 (SC-40) axial-glass package with 2 leads: cathode marked by a band, anode unmarked. Mounting requires ≤8 mm lead length on FR4 PCB without metallization pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output node; reverse-bias terminal where Zener breakdown occurs |
| 2 (unmarked end) | Anode | Connected to circuit ground or lower-potential rail; completes bias path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and long-term parameter drift in humid or corrosive environments |
| Low differential resistance (20 Ω) | Reduces output voltage deviation under ±1 mA load current changes in precision references |
| Low leakage (≤0.7 µA @ 5 V) | Enables use in ultra-low-power monitoring circuits where standby current must stay below 1 µA |
| Wide operating temperature range | Supports deployment in industrial control cabinets and outdoor sensor enclosures without derating |
| Axial SOD27 mechanical form | Allows manual soldering, wave soldering, and compatibility with legacy through-hole assembly lines |
Applications
| Industrial Sensor Reference | Overvoltage Clamp for MCU I/O |
|---|---|
|
Use Scenario: Providing stable 8.2 V reference for 12-bit ADC biasing in temperature transmitter modules. IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference establishing precise input scaling for analog front-end conditioning. Use Value: Tight 7.9–8.3 V tolerance and 20 Ω rdif ensure ADC full-scale error remains <0.25% across 0–70 °C ambient. |
Use Scenario: Protecting 3.3 V GPIO pins of microcontrollers against transient surges up to 12 V. IC Role / Device Role / Timing Role: Passive clamp element conducting excess energy to ground when voltage exceeds 8.2 V. Use Value: Low leakage (<0.7 µA) avoids signal loading; fast response prevents latch-up during ESD events. |
| Low-Power Battery Monitor | Legacy Power Supply Regulation |
|
Use Scenario: Monitoring Li-ion cell voltage via resistive divider into comparator input in wearables. IC Role / Device Role / Timing Role: Zener-based voltage threshold detector enabling wake-on-charge detection. Use Value: Sub-microamp leakage preserves battery life over multi-week sleep cycles in coin-cell applications. |
Use Scenario: Regulating auxiliary 8 V rail in industrial PLC power supplies using discrete transistor pass element. IC Role / Device Role / Timing Role: Shunt regulator reference setting base drive point for series-pass BJT. Use Value: 500 mW Ptot and 380 K/W Rth(j-a) allow stable 8.2 V output without heatsink at 25 °C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55-C8V2 | Same 8.2 V nominal, but ±5% tolerance and higher rdif (35 Ω typ.); plastic DO-35 package | Limited to non-hermetic, cost-sensitive consumer designs; lower thermal stability | Choose for lower-cost alternatives where hermeticity and <20 Ω impedance are not required |
| 1N4736A | 8.2 V nominal, ±5%, but 500 mW rating at 25 °C only; larger DO-41 package; rdif = 7 Ω | Better regulation at higher currents, but less suitable for compact axial layouts and high-temp operation | Prefer when lower dynamic impedance is critical and board space allows DO-41 footprint |
Compared with BZX55-C8V2 and 1N4736A, NZX8V2B,133 offers superior thermal stability (175 °C max Tj), hermetic reliability, and optimized rdif for low-current precision references - making it preferred for industrial sensing and long-life embedded systems.
Availability
NZX8V2B,133 is available at Aetrix Electronics and suitable for industrial sensor reference, overvoltage clamp for MCU I/O, low-power battery monitor, and legacy power supply regulation requiring stable component supply with guaranteed long-term availability.
Supply support for NZX8V2B,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 - founded in 2017 as a spin-off from NXP, now serving automotive, industrial, and consumer markets.
The NZX series targets general-purpose Zener regulation with hermetic reliability and tight voltage tolerances - engineered for applications demanding long-term stability in non-automotive industrial environments.
FAQ
What is the Zener voltage tolerance for NZX8V2B,133 at 5 mA test current?
The NZX8V2B,133 has a nominal Zener voltage of 8.2 V with a guaranteed range of 7.9 V to 8.3 V at IZ = 5 mA, corresponding to ±5% tolerance as defined in Table 8 of the Nexperia datasheet Rev. 4.
Can NZX8V2B,133 be used in surface-mount designs?
No - NZX8V2B,133 uses an axial-leaded SOD27 (SC-40) glass package intended for through-hole mounting. It lacks SMD-compatible terminations or reflow-suitable construction, and its thermal profile is validated only for leaded PCB assembly.
What is the maximum allowable forward current for this Zener diode?
The absolute maximum forward current is 250 mA, as specified in Table 5 (Limiting Values). This rating applies under continuous DC conditions with proper PCB thermal management per Nexperia's FR4 mounting guidelines.
How does the temperature coefficient affect regulation accuracy above 25 °C?
At 8.2 V, the NZX8V2B,133 exhibits a negative temperature coefficient of approximately −2 mV/K (Fig 4), meaning VZ decreases ~2 mV per °C rise. For example, at 75 °C ambient, VZ drops ~100 mV from its 25 °C value - requiring system-level compensation in precision references.
NZX8V2B,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):
- 8.1 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 20 Ohms
- Current - Reverse Leakage @ Vr:
- 700 nA @ 5 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
NZX8V2B,133 FAQ
1.How can I place an order for NZX8V2B,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for NZX8V2B,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 NZX8V2B,133 reliable?
The price and inventory of NZX8V2B,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX8V2B,133 is usually 5 days.
3.What payment methods are accepted for NZX8V2B,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX8V2B,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZX8V2B,133?
NZX8V2B,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZX8V2B,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 NZX8V2B,133?
For technical support, including NZX8V2B,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX8V2B,133 requirements.
6.How does Aetrix verify that NZX8V2B,133 is sourced from the original manufacturer or authorized distributors?
All NZX8V2B,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 NZX8V2B,133 meets industry standards.
7.What is the process for return or replacement of NZX8V2B,133?
All NZX8V2B,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX8V2B,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 NZX8V2B,133 part is unused and in its original packaging.
Return procedure for NZX8V2B,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NZX8V2B,133 Tags
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