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onsemi NZ8F4V3SMX2WT5G
- Part No.:
- NZ8F4V3SMX2WT5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- 2-XDFN
- Datasheet:
-
NZ8F4V3SMX2WT5G.pdf
- Description:
- DIODE ZENER 4.3V 250MW 2-X2DFNW
- Quantity:
- Payment:
- Shipping:
Inventory:6,509
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Product details
Overview
NZ8F4V3SMX2WT5G from onsemi is a tight-tolerance Zener diode in X2DFNW2 (0402) wettable flank package, rated for 250 mW dissipation at 25 °C, with nominal Zener voltage 4.31 V (min 4.16 V, max 4.45 V) at 5 mA test current, 100 Ω dynamic impedance, and 5 µA leakage at 1 V reverse bias - used for precision voltage clamping in space-constrained portable electronics.
For engineers reviewing the NZ8F4V3SMX2WT5G datasheet, pinout, applications, or equivalent options, key selection criteria include ±2.2% voltage tolerance, 0.40 mm body height, AEC-Q101 qualification eligibility (with SZ prefix), wettable flank geometry for AOI, and compatibility with high-density PCB layouts requiring minimal footprint.
Technical Context
This device operates as a unidirectional voltage regulator in reverse-bias mode, maintaining stable reference voltage across load variations within its specified power and thermal limits. Its low-profile X2DFNW2 package enables automated optical inspection and supports fine-pitch routing on compact PCBs.
The NZ8F4V3SMX2WT5G exhibits a typical temperature coefficient of +4 mV/°C over −55 °C to +150 °C, and its capacitance is 210 pF at 0 V bias and 1 MHz - critical for ESD-sensitive signal line protection where parasitic capacitance must remain predictable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.16 V to 4.45 V @ IZT = 5 mA - defines precise clamping threshold for 3.3 V rail protection |
| Power Dissipation (PD) | 250 mW @ TA = 25 °C on FR-4 (1 oz Cu, min pad) - sets maximum continuous energy handling in handheld PCBs |
| Zener Impedance (ZZT) | 100 Ω @ IZT = 5 mA - determines regulation stiffness under dynamic load transients |
| Leakage Current (IR) | 5 µA @ VR = 1 V - ensures minimal standby current draw in battery-powered systems |
| Capacitance (C) | 210 pF @ VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and signal integrity on data lines |
| Package | X2DFNW2 (0402, 1.00 × 0.60 × 0.37 mm) - enables 0.65 mm pitch assembly and AOI-compatible solder joint inspection |
| Junction Temp Range | −65 °C to +150 °C - supports operation in automotive under-hood and industrial ambient environments |
Pinout & Package
X2DFNW2 surface-mount package with 2-terminal configuration: ultra-low profile (0.40 mm height), wettable flank side walls, and industry-standard 0402 inch (1.00 mm × 0.60 mm) footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-bias anode connection point | Connected to regulated voltage node; polarity must be observed to enable Zener conduction |
| 2 (Anode) | Reverse-bias cathode return path | Tied to system ground or lower-potential rail; completes clamping current path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Tight voltage tolerance | ±2.2% (4.16–4.45 V) - reduces design margin needed for 3.3 V supply rail clamping |
| Wettable flank geometry | Side-wall solderability verified per IPC-J-STD-001 - enables automated optical inspection of solder fillets without X-ray |
| AEC-Q101 readiness | SZ-prefix variant available - supports automotive control unit designs requiring PPAP documentation and site-specific change control |
| Pb-free / RoHS compliance | Halogen-free, BFR-free construction - meets EU Directive 2011/65/EU and JESD204B process requirements |
| Low thermal resistance | RJA = 415 °C/W (min pad) - allows operation up to +85 °C ambient without derating in thin PCBs |
Applications
| USB Data Line Protection | Automotive Sensor Interface |
|---|---|
Use Scenario: Clamping transient spikes on USB 2.0 D+ and D− lines in portable chargers and OTG adapters. IC Role / Device Role / Timing Role: Unidirectional voltage clamp protecting PHY transceivers from ESD and coupling noise. Use Value: 210 pF capacitance avoids signal rise-time degradation while 4.31 V Zener threshold aligns with 3.3 V IO tolerance limits. | Use Scenario: Stabilizing reference voltage for analog sensor signal conditioning in engine control modules. IC Role / Device Role / Timing Role: Precision shunt regulator providing stable bias for op-amp input stages and ADC references. Use Value: ±2.2% tolerance ensures <±10 mV error at 4.3 V output, supporting 12-bit ADC accuracy in 125 °C under-hood environments. |
| Smartphone Power Management | Industrial IoT Node Regulation |
Use Scenario: Overvoltage protection for PMIC LDO outputs feeding RF front-end ICs in LTE handsets. IC Role / Device Role / Timing Role: Secondary clamping element downstream of primary TVS, absorbing residual surges below 5 V. Use Value: 250 mW rating sustains 100 ms pulses per IEC 61000-4-5 Level 2, while 0.40 mm height fits beneath stacked camera modules. | Use Scenario: Voltage reference stabilization for LoRaWAN node microcontrollers operating on lithium-thionyl chloride batteries. IC Role / Device Role / Timing Role: Low-leakage (5 µA @ 1 V) shunt regulator maintaining stable 3.3 V logic supply during deep-sleep cycles. Use Value: Sub-µA standby current contribution extends 10-year battery life; −65 °C to +150 °C range covers outdoor deployment extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NZ8F4V3MX2WT5G | Standard tolerance (±5.3%: 4.09–4.52 V) vs. tight tolerance (±2.2%) | Acceptable for non-critical 3.3 V rail clamping where ±0.2 V margin is sufficient | Select when cost sensitivity outweighs precision requirement; same package and thermal specs |
| BZX384-B4V3,115 | Higher ZZT (120 Ω), larger SOD-323 package (1.7 × 1.3 mm), no wettable flank | Limited to less dense layouts; unsuitable for AOI-dependent high-volume manufacturing | Choose only if legacy board reuse prohibits 0402 adoption or if higher surge capability (500 mW) is required |
Compared with NZ8F4V3MX2WT5G and BZX384-B4V3,115, the NZ8F4V3SMX2WT5G delivers tighter voltage control in the smallest footprint with AOI support - making it optimal for next-generation portable and automotive electronics where layout density and inspection reliability are critical.
Availability
NZ8F4V3SMX2WT5G is available at Aetrix Electronics and suitable for USB data line protection, automotive sensor interfaces, and smartphone power management requiring stable component supply across high-mix production runs.
Supply support for NZ8F4V3SMX2WT5G 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 (Semiconductor Components Industries, LLC) is a global supplier of energy-efficient semiconductor solutions, specializing in automotive, industrial, cloud, and IoT applications.
The NZ8F Series targets space-constrained, high-reliability voltage regulation - engineered specifically for portable electronics and automotive control units needing precision clamping in ultra-small packages.
FAQ
What is the Zener voltage tolerance of NZ8F4V3SMX2WT5G?
The NZ8F4V3SMX2WT5G has a tight Zener voltage tolerance of ±2.2%, with a specified range of 4.16 V to 4.45 V at 5 mA test current. This tighter tolerance compared to standard-series variants makes NZ8F4V3SMX2WT5G suitable for applications demanding higher precision voltage clamping, such as reference stabilization in sensor signal chains or protection of sensitive 3.3 V logic interfaces where even small deviations affect system margin.
Does NZ8F4V3SMX2WT5G support automotive qualification?
Yes - the NZ8F4V3SMX2WT5G is part of the AEC-Q101-qualified NZ8F Series. While the base part number does not include the SZ prefix, the identical die and package are available as SZNZ8F4V3SMX2WT5G, which meets AEC-Q101 stress testing requirements and supports PPAP documentation. This enables direct use in automotive control units, including engine management and ADAS sensor modules, provided the SZ-prefixed version is ordered for certified applications.
What is the maximum power dissipation for NZ8F4V3SMX2WT5G on a standard PCB?
NZ8F4V3SMX2WT5G is rated for 250 mW total device dissipation at 25 °C ambient on an FR-4 board with minimum pad layout (1 oz copper). Above 25 °C, it derates linearly at 1.5 mW/°C. This rating assumes standard JEDEC-compliant thermal conditions and is validated for use in handheld devices and automotive ECUs where board-level heat sinking is limited - exceeding this limit risks parametric shift or premature failure.
How does the wettable flank feature benefit manufacturing of NZ8F4V3SMX2WT5G?
The wettable flank design of NZ8F4V3SMX2WT5G enables reliable automated optical inspection (AOI) of solder joints on both top and side surfaces of the X2DFNW2 package. Unlike conventional 0402 chips, its side-wall metallization allows AOI systems to verify solder fillet formation and coplanarity without requiring X-ray inspection - reducing test cost and increasing yield in high-volume SMT lines for smartphones, wearables, and automotive modules where inspection coverage is critical.
Can NZ8F4V3SMX2WT5G replace older Zener diodes like BZX384-B4V3 in existing designs?
NZ8F4V3SMX2WT5G is not a direct drop-in replacement for BZX384-B4V3 due to differences in package size (X2DFNW2 vs. SOD-323), thermal resistance, and Zener impedance (100 Ω vs. 120 Ω). While both regulate near 4.3 V, the smaller footprint and tighter tolerance of NZ8F4V3SMX2WT5G require PCB layout revision. It is best suited for new designs prioritizing miniaturization and AOI compatibility - not for legacy board re-spins unless pad geometry and thermal validation are updated.
NZ8F4V3SMX2WT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- NZ8F
- Package/Case:
- 2-XDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 4.3 V
- Tolerance:
- ±3.37%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1 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)
NZ8F4V3SMX2WT5G FAQ
1.How can I place an order for NZ8F4V3SMX2WT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for NZ8F4V3SMX2WT5G 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 NZ8F4V3SMX2WT5G reliable?
The price and inventory of NZ8F4V3SMX2WT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZ8F4V3SMX2WT5G is usually 5 days.
3.What payment methods are accepted for NZ8F4V3SMX2WT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZ8F4V3SMX2WT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZ8F4V3SMX2WT5G?
NZ8F4V3SMX2WT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZ8F4V3SMX2WT5G 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 NZ8F4V3SMX2WT5G?
For technical support, including NZ8F4V3SMX2WT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZ8F4V3SMX2WT5G requirements.
6.How does Aetrix verify that NZ8F4V3SMX2WT5G is sourced from the original manufacturer or authorized distributors?
All NZ8F4V3SMX2WT5G 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 NZ8F4V3SMX2WT5G meets industry standards.
7.What is the process for return or replacement of NZ8F4V3SMX2WT5G?
All NZ8F4V3SMX2WT5G units undergo pre-shipment inspection (PSI). If there is an issue with NZ8F4V3SMX2WT5G, 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 NZ8F4V3SMX2WT5G part is unused and in its original packaging.
Return procedure for NZ8F4V3SMX2WT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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