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Nexperia USA Inc. NZX27C,133
- Part No.:
- NZX27C,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
NZX27C,133.pdf
- Description:
- DIODE ZENER 27.9V 500MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:2,882
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Product details
Overview
NZX27C from Nexperia is a single Zener diode in a hermetically sealed SOD27 (SC-40) glass package, designed for precision voltage regulation at 27 V nominal working voltage with ±5% tolerance (25.2–26.6 V min/max), 80 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 loops, and overvoltage protection stages.
For engineers reviewing the NZX27C datasheet, NZX27C pinout, NZX27C application, or NZX27C equivalent, this component serves as a discrete, axial-leaded voltage clamp with verified thermal resistance (Rth(j-a) = 380 K/W), low forward voltage (VF ≤ 1.5 V @ 200 mA), and junction temperature rating up to 175 °C - critical for reliability in industrial power management and sensor signal conditioning.
Technical Context
This Zener diode operates in reverse breakdown mode to maintain a stable reference voltage across its cathode-anode terminals. Its 27 V nominal Zener voltage is specified at IZ = 2 mA per Table 9, with temperature coefficient behavior documented for currents between 2 mA and 60 mA.
The device uses a hermetically sealed glass package (SOD27/SC-40) enabling long-term stability under thermal cycling and humidity exposure. Its 500 mW total power dissipation limit and 300 µs pulse test compliance ensure robustness in transient-suppression applications without metallized PCB pads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 25.2–26.6 V min/max at IZ = 2 mA - defines precise clamping threshold for 27 V nominal regulation |
| Differential Resistance (rdif) | 80 Ω max at IZ = 2 mA - determines output impedance and regulation sensitivity to current variation |
| Reverse Leakage Current (IR) | ≤0.05 µA max at VR = 18.9 V - ensures minimal quiescent power loss in standby or high-impedance bias networks |
| Total Power Dissipation (Ptot) | 500 mW max at Ttp ≤ 25 °C - sets absolute thermal limit for continuous DC operation on FR4 PCB |
| Junction Temperature (Tj) | −65 to +175 °C - enables deployment in extended-temperature industrial environments without derating |
| Thermal Resistance (Rth(j-a)) | 380 K/W in free air - quantifies self-heating rise per watt, critical for ambient-limited designs |
Pinout & Package
Package: SOD27 (SC-40), hermetically sealed axial-leaded glass package with 25.4 mm minimum lead length and 4.25 mm maximum body diameter. The black band marks the cathode terminal.
| 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 rail; completes current path during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Hermetic glass sealing | Prevents moisture ingress and parameter drift over time, ensuring long-term VZ stability in harsh environments |
| Low differential resistance | 80 Ω max improves regulation accuracy under load variations, reducing output voltage deviation |
| Low leakage current | ≤0.05 µA minimizes error in high-impedance reference dividers and battery-powered sensing circuits |
| Controlled temperature coefficient | Optimized for near-zero TC around 27 V, reducing thermal drift in precision analog references |
Applications
| Power Supply Feedback | Overvoltage Clamp |
|---|---|
Use Scenario: Stabilizing output voltage in linear regulator feedback networks using resistive divider and error amplifier. IC Role / Device Role / Timing Role: Provides precise 27 V reference point for comparator or op-amp input, defining regulation setpoint. Use Value: Enables ±1% output accuracy with minimal temperature-induced drift due to low rdif and stable VZ. |
Use Scenario: Protecting downstream circuitry from transient surges exceeding 27 V in 24 V industrial control systems. IC Role / Device Role / Timing Role: Acts as shunt limiter, conducting excess current when input exceeds VZ + margin. Use Value: Absorbs up to 500 mW surge energy without degradation, leveraging hermetic seal for repeatable clamping. |
| Sensor Signal Conditioning | Reference Voltage Source |
Use Scenario: Biasing bridge sensors or setting common-mode voltage in analog front-ends for pressure/temperature transducers. IC Role / Device Role / Timing Role: Supplies stable 27 V excitation or offset reference independent of supply fluctuations. Use Value: Low leakage (<0.05 µA) prevents loading of high-Z sensor outputs, preserving measurement fidelity. |
Use Scenario: Generating fixed reference for ADCs, DACs, or comparators in data acquisition modules. IC Role / Device Role / Timing Role: Functions as passive voltage reference with predictable TC and minimal noise contribution. Use Value: 80 Ω rdif ensures <10 mV shift under 100 µA load changes, supporting 12-bit+ resolution systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55-C27 | Plastic DO-35 package; higher rdif (100 Ω); 400 mW Ptot; ±5% VZ tolerance | Lower cost but reduced thermal stability and long-term drift performance vs. hermetic glass | Select for cost-sensitive consumer applications where environmental stress is minimal |
| 1N4737A | DO-41 package; 1 W Ptot; 35 Ω rdif; ±5% VZ; higher IZ test current (20 mA) | Higher power handling and lower impedance, but larger footprint and no hermetic seal | Choose when >500 mW surge absorption or tighter regulation under dynamic loads is required |
Compared with BZX55-C27 and 1N4737A, NZX27C offers superior long-term stability and thermal resilience via hermetic sealing, while balancing moderate power capability and low leakage - ideal for industrial-grade reference and protection where reliability outweighs raw power or cost.
Availability
NZX27C is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, and overvoltage protection circuits requiring stable component supply with traceable sourcing and lifecycle continuity.
Supply support for NZX27C 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 solutions with focus on efficiency, miniaturization, and robustness.
The NZX series targets general-purpose Zener regulation with emphasis on stability, low leakage, and hermetic reliability - engineered for industrial, automotive-adjacent, and instrumentation applications demanding consistent voltage reference behavior.
FAQ
What is the Zener voltage tolerance and test condition for NZX27C?
The NZX27C has a nominal Zener voltage of 27 V with a tolerance range of 25.2 V to 26.6 V (±5%), measured at a test current of 2 mA and junction temperature of 25 °C per Table 9 in the official Nexperia datasheet Rev. 4.
Can NZX27C be used in surface-mount designs?
No - NZX27C uses an axial-leaded SOD27 (SC-40) glass package with 25.4 mm minimum lead length, intended for through-hole mounting only. It lacks solder pads or terminations compatible with reflow or pick-and-place SMT processes.
How does the thermal resistance affect real-world power handling?
With Rth(j-a) = 380 K/W in free air, dissipating 500 mW raises junction temperature by 190 K above ambient. At 25 °C ambient, Tj reaches 215 °C - exceeding the 175 °C absolute maximum. Derating to ≤350 mW is required for safe continuous operation at room temperature.
Is NZX27C automotive-qualified?
No - the Nexperia datasheet explicitly states this device is non-automotive qualified. It is not tested to AEC-Q101 or subjected to automotive-grade qualification stress profiles, and its use in safety-critical vehicle systems is not supported or warranted.
NZX27C,133 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- NZX
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Tape & Box (TB)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 27.9 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 50 nA @ 18.9 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
NZX27C,133 FAQ
1.How can I place an order for NZX27C,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for NZX27C,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 NZX27C,133 reliable?
The price and inventory of NZX27C,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX27C,133 is usually 5 days.
3.What payment methods are accepted for NZX27C,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX27C,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZX27C,133?
NZX27C,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZX27C,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 NZX27C,133?
For technical support, including NZX27C,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX27C,133 requirements.
6.How does Aetrix verify that NZX27C,133 is sourced from the original manufacturer or authorized distributors?
All NZX27C,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 NZX27C,133 meets industry standards.
7.What is the process for return or replacement of NZX27C,133?
All NZX27C,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX27C,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 NZX27C,133 part is unused and in its original packaging.
Return procedure for NZX27C,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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