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Nexperia USA Inc. NZX12C,133
- Part No.:
- NZX12C,133
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
NZX12C,133.pdf
- Description:
- DIODE ZENER 12.15V 500MW ALF2
- Quantity:
- Payment:
- Shipping:
Inventory:9,792
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Product details
Overview
NZX12C,133 from Nexperia is a single Zener diode in a hermetically sealed SOD27 (SC-40) glass package, designed for precision voltage regulation at 12 V nominal working voltage with ±5% tolerance (11.4–12.4 V), 35 Ω typical differential resistance at IZ = 5 mA, and ≤0.1 µA reverse leakage current at VR = 9.8 V - used in low-power reference and overvoltage clamp circuits in industrial power supplies and sensor signal conditioning.
For engineers reviewing the NZX12C,133 datasheet, NZX12C,133 pinout, NZX12C,133 application, or NZX12C,133 equivalent, this part supports stable 12 V reference generation under low-current conditions (IZ = 5 mA), offers low thermal drift (−2 to +2 mV/K near 12 V), and requires axial lead mounting on FR4 PCBs with ≤8 mm lead length for thermal compliance.
Technical Context
This Zener operates in reverse breakdown mode with a specified test current of 5 mA, delivering a tightly controlled 12 V regulation point across ambient temperatures from −55 °C to +175 °C. Its low 35 Ω dynamic impedance ensures minimal output voltage variation under load shifts, while its 0.1 µA max reverse leakage at 9.8 V enables high-impedance bias network compatibility.
The device uses a hermetic glass SOD27 package with axial leads and cathode band marking, supporting free-air thermal resistance of 380 K/W. It complies with IEC 60134 absolute maximum ratings, including 500 mW total power dissipation at Ttp ≤ 25 °C and 175 °C junction temperature limit.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VZ) | 12 V nominal, 11.4–12.4 V min/max at IZ = 5 mA - defines precise clamping threshold for 12 V rail protection |
| Differential Resistance (rdif) | 35 Ω typ at IZ = 5 mA - ensures <15 mV output shift per 0.5 mA load change in regulation mode |
| Reverse Leakage Current (IR) | ≤0.1 µA at VR = 9.8 V - enables use in ultra-low-power bias networks without loading error |
| Total Power Dissipation (Ptot) | 500 mW max at Ttp ≤ 25 °C - sets usable continuous power limit for derated operation on standard FR4 |
| Thermal Resistance (Rth(j-a)) | 380 K/W in free air - dictates ~190 °C rise at full 500 mW, requiring board-level thermal management |
| Junction Temperature Range | −55 °C to +175 °C - supports operation in extended industrial and under-hood environments |
Pinout & Package
Hermetically sealed SOD27 (SC-40) axial-leaded glass package with 25.4 mm minimum lead length, 1.85 mm max body diameter, and cathode band marking on lead 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output node; reverse-biased during Zener operation |
| 2 | Anode | Connected to ground or lower-potential reference; completes bias path for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low differential resistance | 35 Ω typical at 5 mA - minimizes regulation error under varying load currents |
| Low leakage current | ≤0.1 µA at 9.8 V - preserves accuracy in high-impedance voltage divider and reference circuits |
| Hermetic glass sealing | SOD27 package - ensures long-term stability and moisture resistance in harsh environments |
| Wide operating temperature | −55 °C to +175 °C junction range - supports deployment in industrial controls and automotive non-safety modules |
Applications
| Industrial Power Supply Reference | Sensor Signal Conditioning Clamp |
|---|---|
|
Use Scenario: Providing stable 12 V reference for op-amp feedback networks in 24 V DC/DC converters. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference in unregulated auxiliary supply rails. Use Value: 11.4–12.4 V tolerance and 35 Ω rdif maintain ±0.5% reference accuracy across 1–10 mA load variations. |
Use Scenario: Clamping analog sensor outputs (e.g., 4–20 mA transmitters) to prevent ADC overvoltage. IC Role / Device Role / Timing Role: Reverse-biased Zener limiting transient excursions above 12 V before signal enters protection circuitry. Use Value: 0.1 µA leakage avoids loading high-impedance sensor outputs; 500 mW rating handles short-duration surges. |
| Microcontroller Reset Circuit | LED Driver Current Set Point |
|
Use Scenario: Generating clean reset threshold voltage for 3.3 V or 5 V microcontrollers using resistor-divider + Zener. IC Role / Device Role / Timing Role: Precision voltage reference defining logic-high reset release level in RC-based reset generators. Use Value: Tight 12 V tolerance and low tempco (±2 mV/K) ensure consistent reset timing across −40 °C to +85 °C ambient. |
Use Scenario: Setting reference voltage for constant-current LED driver ICs (e.g., LM3405) in indicator lighting. IC Role / Device Role / Timing Role: Shunt regulator establishing fixed VREF for current-sense amplifier biasing. Use Value: Low 35 Ω rdif maintains stable current setpoint despite input ripple; glass package resists humidity-induced drift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55-C12 | Same 12 V nominal, but higher 100 Ω rdif, 5 µA IR at 9.1 V, DO-35 package | Lower regulation precision; suitable only where cost > performance | Select when legacy DO-35 footprint required and 100 Ω rdif is acceptable |
| MMSZ5242B | 12 V nominal, SOD-123 package, 33 Ω rdif, 0.1 µA IR, but 350 mW Ptot | Smaller footprint, lower power handling - unsuitable for sustained 500 mW operation | Select for space-constrained PCBs where peak power stays below 350 mW |
Compared with BZX55-C12 and MMSZ5242B, NZX12C,133 delivers superior regulation stability (35 Ω vs. 100 Ω/33 Ω) and full 500 mW capability in a hermetic package - making it optimal for industrial-grade references demanding long-term drift immunity and thermal robustness.
Availability
NZX12C,133 is available at Aetrix Electronics and suitable for industrial power supplies, sensor interface modules, microcontroller reset circuits, and LED driver reference designs requiring stable component supply with traceable sourcing and lifecycle continuity.
Supply support for NZX12C,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 cost-sensitive yet thermally demanding applications, emphasizing hermetic reliability, wide temperature operation, and tight voltage tolerances across 2.1–36 V range.
FAQ
What is the maximum continuous power dissipation for NZX12C,133?
The maximum total power dissipation is 500 mW at terminal temperature ≤25 °C. Derating is required above 25 °C at 4.2 mW/°C, based on Rth(j-a) = 380 K/W. Operation at full power requires adequate PCB copper area or forced airflow to maintain safe junction temperature.
How is polarity identified on the NZX12C,133 package?
The cathode is marked by a visible band on the glass body, aligned with lead 1. When viewed with the band facing left, lead 1 (left) is cathode and lead 2 (right) is anode - consistent with standard diode marking convention and confirmed in Nexperia's pinning diagram.
Does NZX12C,133 meet automotive qualification standards?
No. NZX12C,133 is not automotive-qualified. The datasheet explicitly states "Non-automotive qualified products" and excludes AEC-Q101 testing. It is rated for industrial use up to 175 °C junction temperature but lacks automotive-specific stress screening, failure analysis, or PPAP documentation.
What is the temperature coefficient behavior near 12 V operation?
At 12 V, the temperature coefficient ranges from −2 to +2 mV/K depending on test current, as shown in Figure 4 of the datasheet. This low drift enables stable reference performance across −55 °C to +175 °C, especially when biased at the specified 5 mA test current.
NZX12C,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):
- 12.15 V
- Tolerance:
- ±2%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 35 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 8 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
NZX12C,133 FAQ
1.How can I place an order for NZX12C,133 through Aetrix?
Please submit a Request for Quotation (RFQ) for NZX12C,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 NZX12C,133 reliable?
The price and inventory of NZX12C,133 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZX12C,133 is usually 5 days.
3.What payment methods are accepted for NZX12C,133?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZX12C,133 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZX12C,133?
NZX12C,133 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZX12C,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 NZX12C,133?
For technical support, including NZX12C,133 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZX12C,133 requirements.
6.How does Aetrix verify that NZX12C,133 is sourced from the original manufacturer or authorized distributors?
All NZX12C,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 NZX12C,133 meets industry standards.
7.What is the process for return or replacement of NZX12C,133?
All NZX12C,133 units undergo pre-shipment inspection (PSI). If there is an issue with NZX12C,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 NZX12C,133 part is unused and in its original packaging.
Return procedure for NZX12C,133:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NZX12C,133 Tags
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