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onsemi NZ8F20VSMX2WT5G
- Part No.:
- NZ8F20VSMX2WT5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- 2-XDFN
- Datasheet:
-
NZ8F20VSMX2WT5G.pdf
- Description:
- DIODE ZENER 20V 250MW 2-X2DFNW
- Quantity:
- Payment:
- Shipping:
Inventory:4,585
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Product details
Overview
NZ8F20VSMX2WT5G from onsemi is a 20 V ±2.3% tight-tolerance Zener diode in X2DFNW2 (0402) wettable flank package, rated for 250 mW dissipation at 25 °C with 55 Ω dynamic impedance at 5 mA and 0.1 µA leakage at 15.4 V reverse bias-designed for precision voltage clamping in space-constrained automotive control units and portable electronics.
For engineers reviewing the NZ8F20VSMX2WT5G datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q101 qualification, ±0.46 V Zener voltage tolerance, 55 pF capacitance at 0 V, 0.40 mm body height, and wettable flank geometry enabling reliable AOI inspection in high-volume SMT assembly.
Technical Context
This device operates as a unidirectional voltage reference and transient clamp, leveraging silicon PN junction breakdown at precisely controlled 20 V nominal Zener voltage. Its thermal resistance of 415 °C/W (FR-4, minimum pad) and derating slope of 1.5 mW/°C define safe operating limits under ambient temperature variation.
The NZ8F20VSMX2WT5G exhibits a positive temperature coefficient near 0 mV/°C (per Figure 4), minimizing drift across −65 °C to +150 °C junction range. Its 55 Ω Zener impedance at 5 mA test current ensures stable regulation under moderate load transients, while 0.1 µA leakage at VR = 15.4 V supports low-power standby integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 19.54 V min / 20.46 V max at IZT = 5 mA - defines ±2.3% regulation window for precision clamping |
| Power Dissipation (PD) | 250 mW @ TA = 25 °C - sets maximum continuous DC power handling on standard FR-4 PCB |
| Zener Impedance (ZZT) | 55 Ω @ IZT = 5 mA - determines AC regulation stiffness and noise rejection capability |
| Leakage Current (IR) | 0.1 µA @ VR = 15.4 V - enables low-quiescent-current operation in battery-backed circuits |
| Capacitance (C) | 55 pF @ VR = 0 V, f = 1 MHz - impacts high-frequency signal integrity in ESD protection paths |
| Package | X2DFNW2 (0402) with wettable flanks - supports automated optical inspection and fine-pitch reflow reliability |
| AEC-Q101 Qualified | Yes - validated for automotive-grade reliability including temperature cycling, HTRB, and ESD |
Pinout & Package
X2DFNW2 surface-mount package: 0.60 mm × 1.00 mm footprint, 0.37 mm max height, 0.65 mm pitch, wettable flank side walls for solder fillet inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated rail or signal line requiring clamping; polarity critical for reverse-bias operation |
| 2 (Anode) | Reference/ground terminal | Bonded to PCB ground plane or low-impedance return path; establishes reference potential for Zener action |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener voltage tolerance | ±2.3% (19.54–20.46 V) enables accurate overvoltage protection without calibration overhead |
| Wettable flank geometry | Facilitates 100% automated optical inspection of solder joints in high-speed SMT lines |
| AEC-Q101 qualification | Validated for automotive under-hood and infotainment applications per stress test requirements |
| Pb-free, halogen-free | Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 1 moisture sensitivity |
Applications
| Automotive Body Control Module | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Protecting microcontroller I/O pins from load-dump transients in 12 V vehicle networks. IC Role / Device Role / Timing Role: Unidirectional voltage clamp limiting input voltage to ≤20.46 V during ISO 7637-2 Pulse 5a events. Use Value: Prevents latch-up or gate oxide damage in 3.3 V/5 V logic interfaces without adding series resistance or delay. | Use Scenario: Clamping CC line voltage during USB-C port negotiation and VBUS fault conditions. IC Role / Device Role / Timing Role: Fast-response Zener shunt protecting Type-C controller's analog comparator inputs from >20 V surges. Use Value: Maintains <55 pF capacitance to avoid signal integrity degradation on 300 kHz CC communication channel. |
| Portable Medical Sensor Node | Industrial PLC Analog Input Protection |
Use Scenario: Stabilizing reference voltage for low-power ADC in battery-operated pulse oximeter. IC Role / Device Role / Timing Role: Precision 20 V Zener providing stable bias for op-amp gain-setting network. Use Value: Delivers ±2.3% voltage accuracy with only 0.1 µA leakage, extending battery life beyond 12 months. | Use Scenario: Guarding 4–20 mA loop receiver inputs against field-wiring induced surges. IC Role / Device Role / Timing Role: Primary overvoltage clamp absorbing repetitive 30 V transients per IEC 61000-4-4. Use Value: Withstands 40 W non-repetitive peak power (tp = 100 µs) without degradation in harsh factory environments. |
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 |
|---|---|---|---|
| BZX84-C20LT1G | 20 V ±5% tolerance, SOT-23 package (1.3 mm × 1.7 mm), 350 mW PD, 50 Ω ZZT | Larger footprint, higher power, looser tolerance - suitable where board area is not constrained | Select when needing higher surge energy absorption and less stringent voltage accuracy |
| MMSZ5248ET1G | 20 V ±5% tolerance, SOD-123 package (1.8 mm × 1.4 mm), 500 mW PD, 23 Ω ZZT | Higher power rating but larger size and lower Zener impedance - better for high-current regulation | Choose for applications requiring lower dynamic impedance and higher continuous dissipation |
Compared with NZ8F20VSMX2WT5G, BZX84-C20LT1G offers greater power headroom but sacrifices 0402 miniaturization and tight tolerance; MMSZ5248ET1G delivers lower impedance and higher power yet occupies >3× the PCB area-making NZ8F20VSMX2WT5G optimal for space- and accuracy-critical automotive and portable designs.
Availability
NZ8F20VSMX2WT5G is available at Aetrix Electronics and suitable for automotive body control modules, USB-C power delivery systems, portable medical sensor nodes, and industrial PLC analog input protection requiring stable component supply and AEC-Q101 compliance.
Supply support for NZ8F20VSMX2WT5G 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 (Nasdaq: ON) is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The NZ8F Series belongs to onsemi's precision discrete portfolio, engineered specifically for compact, high-reliability voltage regulation and transient suppression in automotive and portable electronics.
FAQ
What is the Zener voltage tolerance of NZ8F20VSMX2WT5G?
NZ8F20VSMX2WT5G has a nominal Zener voltage of 20 V with a tight tolerance of ±2.3%, corresponding to a guaranteed range of 19.54 V to 20.46 V at 5 mA test current. This tighter specification distinguishes it from the standard-tolerance NZ8F20VMX2WT5G (±5%) and supports precision clamping in safety-critical automotive subsystems.
Is NZ8F20VSMX2WT5G qualified for automotive use?
Yes, NZ8F20VSMX2WT5G is AEC-Q101 qualified and PPAP capable. It meets rigorous automotive stress tests including temperature cycling, high-temperature reverse bias (HTRB), and electrostatic discharge (ESD), making it suitable for under-hood and infotainment applications where long-term reliability is mandatory.
What is the maximum power dissipation for NZ8F20VSMX2WT5G on a standard FR-4 board?
NZ8F20VSMX2WT5G is rated for 250 mW total device dissipation at 25 °C ambient on an FR-4 board with minimum pad layout (1 oz. Cu). Power must be linearly derated by 1.5 mW/°C above 25 °C, reaching zero dissipation at approximately 191 °C ambient-though junction temperature must remain within −65 °C to +150 °C limits.
Does NZ8F20VSMX2WT5G have wettable flanks, and why does that matter?
Yes, NZ8F20VSMX2WT5G uses the X2DFNW2 package with wettable flanks-side-wall metallization that allows solder to wick up and form visible fillets during reflow. This enables 100% automated optical inspection (AOI) of solder joint quality, critical for zero-defect manufacturing in automotive and medical electronics.
What is the reverse leakage current specification for NZ8F20VSMX2WT5G?
NZ8F20VSMX2WT5G specifies a maximum reverse leakage current of 0.1 µA at VR = 15.4 V (90% of nominal Zener voltage). This ultra-low leakage preserves battery life in always-on portable and sensor applications while maintaining fast response during overvoltage events.
NZ8F20VSMX2WT5G 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:
- ±2.3%
- 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)
NZ8F20VSMX2WT5G FAQ
1.How can I place an order for NZ8F20VSMX2WT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for NZ8F20VSMX2WT5G 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 NZ8F20VSMX2WT5G reliable?
The price and inventory of NZ8F20VSMX2WT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZ8F20VSMX2WT5G is usually 5 days.
3.What payment methods are accepted for NZ8F20VSMX2WT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZ8F20VSMX2WT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZ8F20VSMX2WT5G?
NZ8F20VSMX2WT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZ8F20VSMX2WT5G 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 NZ8F20VSMX2WT5G?
For technical support, including NZ8F20VSMX2WT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZ8F20VSMX2WT5G requirements.
6.How does Aetrix verify that NZ8F20VSMX2WT5G is sourced from the original manufacturer or authorized distributors?
All NZ8F20VSMX2WT5G 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 NZ8F20VSMX2WT5G meets industry standards.
7.What is the process for return or replacement of NZ8F20VSMX2WT5G?
All NZ8F20VSMX2WT5G units undergo pre-shipment inspection (PSI). If there is an issue with NZ8F20VSMX2WT5G, 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 NZ8F20VSMX2WT5G part is unused and in its original packaging.
Return procedure for NZ8F20VSMX2WT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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