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onsemi NZ8F20VMX2WT5G
- Part No.:
- NZ8F20VMX2WT5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- 2-XDFN
- Datasheet:
-
NZ8F20VMX2WT5G.pdf
- Description:
- DIODE ZENER 20V 250MW 2-X2DFNW
- Quantity:
- Payment:
- Shipping:
Inventory:7,980
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Product details
Overview
NZ8F20VMX2WT5G from onsemi is a 20 V Zener diode in X2DFNW2 (0402) wettable flank package, rated for 250 mW dissipation at 25 °C on FR-4 board with 1 oz. Cu, 0.40 mm body height, and AEC-Q101 qualified for automotive use. It provides voltage regulation and overvoltage protection in space-constrained applications such as automotive control units and portable electronics.
For engineers reviewing the NZ8F20VMX2WT5G datasheet, pinout, applications, or equivalent options, key selection criteria include its 19.0–21.0 V Zener voltage range at 5 mA test current, 55 Ω dynamic impedance, 0.1 µA leakage at 15.4 V reverse bias, 55 pF capacitance at 0 V, and compatibility with automated optical inspection due to wettable flank leads.
Technical Context
This device operates as a unidirectional Zener diode with reverse-biased breakdown regulation. Its thermal resistance is 415 °C/W (Junction-to-Ambient, minimum pad), and it supports non-repetitive peak reverse power of 40 W for 100 µs pulses at 25 °C.
The NZ8F20VMX2WT5G exhibits a typical temperature coefficient of +9 mV/°C near 20 V and maintains stable regulation across −65 °C to +150 °C junction temperature range. Forward voltage is ≤0.9 V at 10 mA, confirming low-loss clamping capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19.0–21.0 V @ IZT = 5 mA - defines precise regulation window for 20 V nominal rail protection |
| Power Dissipation (PD) | 250 mW @ TA = 25 °C - sets maximum continuous steady-state power handling on standard PCB |
| Zener Impedance (ZZT) | 55 Ω @ IZT = 5 mA - indicates regulation stiffness; lower values improve voltage stability under load variation |
| Leakage Current (IR) | 0.1 µA @ VR = 15.4 V - ensures minimal standby current draw before breakdown threshold |
| Capacitance (C) | 55 pF @ VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity in RF-adjacent circuits |
| Package | X2DFNW2 (0402) - 1.00 × 0.60 × 0.37 mm footprint with wettable flank leads for AOI-compatible solder joint inspection |
| Qualification | AEC-Q101 qualified - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
Pinout & Package
X2DFNW2 surface-mount package: ultra-compact 0402 inch (1.00 mm × 0.60 mm) outline with 0.40 mm max body height and wettable flank side walls for automated optical inspection. Leads are coplanar; no exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener cathode terminal | Connected to regulated voltage rail; reverse-biased during operation to maintain stable reference |
| 2 (Anode) | Zener anode terminal | Connected to ground or lower-potential node; completes conduction path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Wettable flank leads | Enables 100% automated optical inspection of solder fillets without X-ray, reducing post-SMT defect escape |
| Low profile (0.40 mm) | Permits placement beneath connectors or in stacked PCB assemblies where vertical clearance is constrained |
| AEC-Q101 qualification | Validates performance across automotive temperature range (−65 °C to +150 °C) and lifetime stress conditions |
| Pb-Free, Halogen-Free | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 1 moisture sensitivity |
| 250 mW rating on minimal FR-4 pad | Supports cost-effective single-layer or low-copper-weight PCB designs without thermal relief compromises |
Applications
| Automotive Engine Control Unit (ECU) | USB-C Power Delivery Interface |
|---|---|
Use Scenario: Protecting 12 V CAN bus transceivers and microcontroller I/O pins from load dump transients up to 40 V. IC Role / Device Role / Timing Role: Zener clamp placed between supply rail and ground to shunt excess energy during ISO 7637-2 Pulse 5a events. Use Value: 20 V breakdown prevents damage to 3.3 V or 5 V logic while surviving 40 W transient peaks per datasheet PZSM rating. | Use Scenario: Regulating auxiliary 20 V rail in USB-C PD sink adapters supporting Programmable Power Supply (PPS) negotiation. IC Role / Device Role / Timing Role: Precision voltage reference for feedback loop of buck converter regulating 20 V output. Use Value: Tight 19.0–21.0 V tolerance at 5 mA enables ±5% regulation accuracy without trimming resistors. |
| Industrial Sensor Signal Conditioning | Portable Medical Monitor Front-End |
Use Scenario: Clamping analog sensor outputs (e.g., pressure or temperature transducers) to prevent ADC input saturation during ESD events. IC Role / Device Role / Timing Role: Low-capacitance (55 pF) Zener placed at op-amp output to limit swing without degrading bandwidth. Use Value: 55 pF capacitance minimizes phase shift in 100 kHz signal paths, preserving fidelity of millivolt-level sensor signals. | Use Scenario: Providing overvoltage protection on battery-charging circuitry in handheld ECG or pulse oximeter devices. IC Role / Device Role / Timing Role: Reverse-biased Zener across Li-ion charger IC input to clamp surges from faulty wall adapters. Use Value: 0.1 µA leakage at 15.4 V ensures <1 nA standby current drain, extending battery life in always-on monitoring modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4702T1G | 20 V nominal, SOD-123 package (1.8 × 1.4 mm), 500 mW rating, 30 Ω ZZT, 0.1 µA IR @ 16 V | Larger footprint and higher power; less suitable for ultra-dense layouts but better thermal margin | Select when board space allows larger package and higher continuous power is required |
| BZX84-C20LT1G | 20 V nominal, SOT-23 package (3.0 × 1.4 mm), 350 mW rating, 50 Ω ZZT, 0.1 µA IR @ 15.4 V | Three-terminal SOT-23 offers same polarity but requires different layout; not wettable flank AOI-ready | Select when existing SOT-23 footprint reuse is prioritized over AOI compatibility and miniaturization |
Compared with MMSZ4702T1G and BZX84-C20LT1G, the NZ8F20VMX2WT5G delivers identical 20 V regulation in the smallest possible footprint with wettable flank leads for process traceability-critical for automotive and medical production lines where solder joint inspection is mandatory.
Availability
NZ8F20VMX2WT5G is available at Aetrix Electronics and suitable for automotive engine control units, USB-C power delivery systems, and portable medical monitors requiring stable component supply with full AEC-Q101 compliance and RoHS certification.
Supply support for NZ8F20VMX2WT5G 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NZ8F Series targets high-reliability, space-constrained voltage regulation-designed specifically for automotive control modules, portable electronics, and safety-critical subsystems needing AEC-Q101 validation and wettable flank manufacturability.
FAQ
What is the Zener voltage tolerance of NZ8F20VMX2WT5G?
The NZ8F20VMX2WT5G has a Zener voltage range of 19.0 V to 21.0 V at 5 mA test current (IZT), corresponding to ±5% tolerance around the nominal 20 V rating. This specification is confirmed in the Electrical Characteristics table on page 2 of the official onsemi datasheet (Rev. 4, November 2025) and applies strictly to the NZ8FxxxMX2WT5G standard tolerance series.
Is NZ8F20VMX2WT5G qualified for automotive applications?
Yes, NZ8F20VMX2WT5G is AEC-Q101 qualified and PPAP capable. The datasheet explicitly states that devices with the "SZ" prefix (e.g., SZNZ8F20VMX2WT5G) meet automotive requirements, and the base part NZ8F20VMX2WT5G shares identical construction, testing, and qualification-confirmed by onsemi's packaging and reliability documentation for the NZ8F Series.
What is the maximum power dissipation of NZ8F20VMX2WT5G on a standard PCB?
NZ8F20VMX2WT5G is rated for 250 mW total device dissipation at 25 °C ambient on an FR-4 board with minimum pad and 1 oz. copper (Note 1). Derating is 1.5 mW/°C above 25 °C. This value is specified in the Maximum Ratings table on page 1 of the onsemi datasheet and reflects real-world thermal performance under defined layout conditions.
Does NZ8F20VMX2WT5G support automated optical inspection (AOI)?
Yes, NZ8F20VMX2WT5G uses the X2DFNW2 package with wettable flank leads, enabling full-side-view AOI of solder fillets without requiring X-ray. This feature is explicitly called out in the datasheet's Specification Features section and verified by the mechanical drawing (Case 711BG) showing chamfered, solderable side walls compatible with industry-standard AOI systems.
What is the forward voltage of NZ8F20VMX2WT5G at 10 mA?
The forward voltage of NZ8F20VMX2WT5G is guaranteed ≤0.9 V at 10 mA forward current (IF), as stated in both the Standard and Tight Tolerance series electrical characteristics tables (pages 2 and 3). This low VF ensures minimal conduction loss when used in bidirectional protection schemes or as a low-drop rectifier in auxiliary paths.
NZ8F20VMX2WT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- NZ8F
- Package/Case:
- 2-XDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 20 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 55 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 15.4 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 2-X2DFNW (1x0.6)
NZ8F20VMX2WT5G FAQ
1.How can I place an order for NZ8F20VMX2WT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for NZ8F20VMX2WT5G 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 NZ8F20VMX2WT5G reliable?
The price and inventory of NZ8F20VMX2WT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZ8F20VMX2WT5G is usually 5 days.
3.What payment methods are accepted for NZ8F20VMX2WT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZ8F20VMX2WT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZ8F20VMX2WT5G?
NZ8F20VMX2WT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZ8F20VMX2WT5G 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 NZ8F20VMX2WT5G?
For technical support, including NZ8F20VMX2WT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZ8F20VMX2WT5G requirements.
6.How does Aetrix verify that NZ8F20VMX2WT5G is sourced from the original manufacturer or authorized distributors?
All NZ8F20VMX2WT5G 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 NZ8F20VMX2WT5G meets industry standards.
7.What is the process for return or replacement of NZ8F20VMX2WT5G?
All NZ8F20VMX2WT5G units undergo pre-shipment inspection (PSI). If there is an issue with NZ8F20VMX2WT5G, 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 NZ8F20VMX2WT5G part is unused and in its original packaging.
Return procedure for NZ8F20VMX2WT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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