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onsemi SZNZ8F3V3MX2WT5G
- Part No.:
- SZNZ8F3V3MX2WT5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- 2-XDFN
- Datasheet:
-
SZNZ8F3V3MX2WT5G.pdf
- Description:
- DIODE ZENER 3.3V 250MW 2-X2DFNW
- Quantity:
- Payment:
- Shipping:
Inventory:7,980
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Product details
Overview
SZNZ8F3V3MX2WT5G from onsemi is an automotive-grade Zener diode voltage regulator in a 0402 wettable flank X2DFNW2 package, with nominal Zener voltage 3.3 V (min 3.05 V, max 3.55 V) at 5 mA test current, 100 Ω dynamic impedance, and 10 nA leakage current at 1 V reverse bias - used for precision voltage clamping in power rail protection circuits of automotive control units.
For engineers reviewing the SZNZ8F3V3MX2WT5G datasheet, pinout, applications, or equivalent options, key selection criteria include AEC-Q101 qualification, wettable flank geometry for AOI compatibility, 250 mW dissipation on FR-4 (1 oz Cu, min pad), ±5% voltage tolerance, and low 0.40 mm body height for ultra-dense PCB layouts.
Technical Context
This device operates as a unidirectional Zener diode, conducting in reverse breakdown to clamp voltage at its specified VZ when reverse-biased above threshold. It exhibits a temperature coefficient of approximately +4 mV/°C near 3.3 V and maintains stable regulation across −65 °C to +150 °C junction temperature range.
Designed for surface-mount use on FR-4 boards, it supports two thermal derating profiles: 1.5 mW/°C from 250 mW (min pad) or 1.2 mW/°C from 500 mW (150 mm² copper area). Its 210 pF capacitance at 0 V and 1 MHz enables effective high-frequency noise suppression without compromising transient response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.05 V to 3.55 V @ IZT = 5 mA - defines precise clamping threshold for 3.3 V rail protection |
| Power Dissipation (PD) | 250 mW @ TA = 25 °C (min pad) - sets maximum continuous energy handling under standard layout |
| Zener Impedance (ZZT) | 100 Ω @ IZT = 5 mA - determines regulation stiffness and output voltage variation under load changes |
| Leakage Current (IR) | 10 nA @ VR = 1 V - ensures minimal standby current draw in always-on automotive subsystems |
| Capacitance (C) | 210 pF @ VR = 0 V, f = 1 MHz - provides ESD-transient filtering while avoiding signal integrity degradation |
| Junction Temp Range | −65 °C to +150 °C - enables operation in engine bay, transmission control, and ADAS sensor modules |
| AEC-Q101 Qualified | Yes - certified for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
The SZNZ8F3V3MX2WT5G uses the X2DFNW2 (Case 711BG) 2-terminal surface-mount package measuring 1.00 mm × 0.60 mm × 0.37 mm with wettable flank side walls. The package has no internal die attach pad; both terminals are accessible via top-side metallization.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Reverse-bias terminal | Connected to regulated node; accepts reverse current during Zener conduction |
| 2 (Anode) | Reference/ground terminal | Typically tied to system ground or lower-potential rail; completes Zener current path |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive underhood and chassis applications requiring PPAP documentation and lot traceability |
| Wettable flank geometry | Enables automated optical inspection (AOI) of solder joint quality on both side walls - critical for zero-defect automotive manufacturing |
| 0.40 mm low profile | Reduces board-level mechanical stress during thermal cycling and allows placement beneath low-clearance shields or connectors |
| Pb-Free, Halogen-Free | Complies with RoHS Directive 2011/65/EU and automotive ELV requirements without compromising solderability or reliability |
| ±5% Zener tolerance | Ensures predictable clamping within 3.05–3.55 V window for 3.3 V logic supply protection without overdesign margin |
Applications
| Automotive Body Control Module (BCM) | Infotainment Power Sequencing |
|---|---|
Use Scenario: Clamping 3.3 V microcontroller I/O rail against load dump transients and battery reversal spikes. IC Role / Device Role / Timing Role: Voltage reference and overvoltage protector placed directly at MCU VDDIO pin. Use Value: Prevents latch-up and gate oxide damage by limiting voltage excursion to ≤3.55 V with <10 nA leakage during normal operation. | Use Scenario: Stabilizing auxiliary 3.3 V supply for display interface ICs during cold-crank and start-stop events. IC Role / Device Role / Timing Role: Secondary shunt regulator ensuring clean power sequencing before main SoC boot. Use Value: Maintains regulation stability across −40 °C to +125 °C ambient with <100 Ω dynamic impedance for fast transient recovery. |
| ADAS Camera Module ESD Protection | Engine Control Unit (ECU) Sensor Biasing |
Use Scenario: Front-end transient suppression on MIPI CSI-2 data lines powered from 3.3 V LDO. IC Role / Device Role / Timing Role: Low-capacitance (210 pF) Zener clamp integrated into high-speed signal path. Use Value: Provides IEC 61000-4-2 Level 4 ESD immunity without distorting 1.5 Gbps differential signals due to controlled capacitance and fast turn-on. | Use Scenario: Providing stable 3.3 V bias to analog pressure and temperature sensors in exhaust gas recirculation (EGR) systems. IC Role / Device Role / Timing Role: Precision voltage reference for ratiometric sensor excitation. Use Value: Delivers ±5% accuracy over full automotive temperature range, enabling <0.5% total error in sensor measurement chain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NZ8F3V3MX2WT5G | No SZ prefix; not AEC-Q101 qualified; same electrical specs and package | Intended for commercial/handheld portable use only - unsuitable for automotive production | Select only for non-automotive designs where PPAP and extended temperature validation are unnecessary |
| SZNZ8F3V3SMX2WT5G | Tighter ±3% Zener tolerance (3.14–3.47 V); otherwise identical package, rating, and qualification | Better suited for precision analog biasing where tighter voltage window reduces calibration drift | Choose when system-level voltage tolerance budget requires <±3% regulation, e.g., high-resolution ADC reference buffers |
Compared with NZ8F3V3MX2WT5G, SZNZ8F3V3MX2WT5G adds AEC-Q101 compliance and site-specific control for automotive release, while SZNZ8F3V3SMX2WT5G improves voltage accuracy at the cost of higher unit price - all share identical thermal performance, footprint, and solder process compatibility.
Availability
SZNZ8F3V3MX2WT5G is available at Aetrix Electronics and suitable for automotive body control modules, infotainment power sequencing, ADAS camera ESD protection, and engine control unit sensor biasing requiring stable component supply with full AEC-Q101 traceability.
Supply support for SZNZ8F3V3MX2WT5G 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 is part of onsemi's precision discrete portfolio, engineered specifically for space-constrained, high-reliability voltage regulation in automotive electronics - emphasizing AEC-Q101 qualification, wettable flank manufacturability, and tight parametric consistency.
FAQ
What is the Zener voltage tolerance of SZNZ8F3V3MX2WT5G?
The SZNZ8F3V3MX2WT5G has a nominal Zener voltage of 3.3 V with a tolerance of ±5%, resulting in a guaranteed range of 3.05 V to 3.55 V at IZT = 5 mA. This tolerance is defined in the Electrical Characteristics table on page 2 of the official onsemi datasheet (Rev. 4, November 2025) and applies under standard test conditions (TA = 25 °C).
Is SZNZ8F3V3MX2WT5G qualified for automotive applications?
Yes, SZNZ8F3V3MX2WT5G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the datasheet's Specification Features section. The "SZ" prefix denotes compliance with automotive-specific site and control change requirements, making it suitable for production use in engine control units, body control modules, and ADAS systems.
What package type does SZNZ8F3V3MX2WT5G use?
SZNZ8F3V3MX2WT5G uses the X2DFNW2 package (Case 711BG), a 2-terminal wettable flank DFN measuring 1.00 mm × 0.60 mm × 0.37 mm with 0.65 mm pitch. Its low 0.40 mm body height and side-wall solderability support AOI and high-density automotive PCB assembly.
What is the maximum power dissipation of SZNZ8F3V3MX2WT5G on a standard FR-4 board?
SZNZ8F3V3MX2WT5G delivers 250 mW maximum power dissipation on an FR-4 board with minimum pad layout (1 oz Cu), derating linearly at 1.5 mW/°C above 25 °C. With enhanced copper area (150 mm², 1 oz Cu), it supports up to 500 mW at 25 °C, derating at 1.2 mW/°C - values confirmed in the Maximum Ratings table on page 1.
Does SZNZ8F3V3MX2WT5G have RoHS and halogen-free compliance?
Yes, SZNZ8F3V3MX2WT5G is Pb-Free, Halogen Free/BFR Free, and fully RoHS compliant per Directive 2011/65/EU, as documented in the Specification Features section of the onsemi datasheet. This compliance is verified through material declarations and third-party testing per IEC 62321 standards.
SZNZ8F3V3MX2WT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- NZ8F
- Package/Case:
- 2-XDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 3.3 V
- Tolerance:
- ±7.58%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1 V
- Voltage - Forward (Vf) (Max) @ If:
- 900 mV @ 10 mA
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 2-X2DFNW (1x0.6)
SZNZ8F3V3MX2WT5G FAQ
1.How can I place an order for SZNZ8F3V3MX2WT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZ8F3V3MX2WT5G 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 SZNZ8F3V3MX2WT5G reliable?
The price and inventory of SZNZ8F3V3MX2WT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ8F3V3MX2WT5G is usually 5 days.
3.What payment methods are accepted for SZNZ8F3V3MX2WT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ8F3V3MX2WT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZ8F3V3MX2WT5G?
SZNZ8F3V3MX2WT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZ8F3V3MX2WT5G 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 SZNZ8F3V3MX2WT5G?
For technical support, including SZNZ8F3V3MX2WT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ8F3V3MX2WT5G requirements.
6.How does Aetrix verify that SZNZ8F3V3MX2WT5G is sourced from the original manufacturer or authorized distributors?
All SZNZ8F3V3MX2WT5G 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 SZNZ8F3V3MX2WT5G meets industry standards.
7.What is the process for return or replacement of SZNZ8F3V3MX2WT5G?
All SZNZ8F3V3MX2WT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ8F3V3MX2WT5G, 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 SZNZ8F3V3MX2WT5G part is unused and in its original packaging.
Return procedure for SZNZ8F3V3MX2WT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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