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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

onsemi SZNZ8F4V7MX2WT5G

Name: SZNZ8F4V7MX2WT5G
Brand: onsemi
SKU: SZNZ8F4V7MX2WT5G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SZNZ8F4V7MX2WT5G

Manufacturer:: onsemi

Category:: Single Zener Diodes

Package:: 2-XDFN

Datasheet:: SZNZ8F4V7MX2WT5G.pdf

Description:: DIODE ZENER 4.7V 250MW 2-X2DFNW

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Product details

Overview

SZNZ8F4V7MX2WT5G from onsemi is an AEC-Q101-qualified Zener diode in X2DFNW2 (0402) wettable flank package, delivering 4.47 V to 4.94 V reverse breakdown voltage at 5 mA test current, 100 Ω maximum dynamic impedance, and 2 µA maximum leakage at 1 V reverse bias-designed for precision voltage clamping in automotive control units and space-constrained portable electronics.

For engineers reviewing the SZNZ8F4V7MX2WT5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), thermal resistance (415 °C/W on FR-4 minimum pad), wettable flank compatibility with AOI, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This device operates as a unidirectional voltage regulator in reverse-bias mode, with nominal Zener voltage specified at I_ZT = 5 mA and characterized across −65 °C to +150 °C junction temperature range. Its low 0.40 mm body height and X2DFNW2 footprint enable high-density PCB layouts without sacrificing thermal performance on standard FR-4 substrates.

The SZNZ8F4V7MX2WT5G exhibits a typical temperature coefficient of +6 mV/°C near 4.7 V, supporting stable regulation under thermal cycling. It maintains ≤150 pF capacitance at 0 V bias and 1 MHz, making it suitable for ESD-sensitive signal-line protection where minimal parasitic loading is required.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	4.47 V min to 4.94 V max @ I_ZT = 5 mA - defines clamping threshold for overvoltage protection circuits
Zener Impedance (Z_ZT)	≤100 Ω @ I_ZT = 5 mA - ensures tight voltage regulation under varying load conditions
Leakage Current (I_R)	≤2 µA @ V_R = 1 V - minimizes standby power loss in battery-powered systems
Capacitance (C)	≤150 pF @ V_R = 0 V, f = 1 MHz - preserves signal integrity in high-speed data lines
Power Dissipation (P_D)	250 mW @ T_A = 25 °C (FR-4 min pad) - sets maximum continuous clamping energy capability
Thermal Resistance (R_JA)	415 °C/W - determines junction temperature rise under given ambient and layout conditions
Junction Temp Range	−65 °C to +150 °C - supports operation in under-hood automotive environments

Pinout & Package

X2DFNW2 surface-mount package (Case 711BG), 1.00 mm × 0.60 mm × 0.37 mm, with wettable flank sidewalls for automated optical inspection. Industry-standard 0402 inch footprint.

Pin/Terminal	Circuit Role	Design Meaning
1 (Cathode)	Zener cathode terminal	Connected to regulated voltage rail; polarity must be observed for proper reverse-bias operation
2 (Anode)	Zener anode terminal	Connected to ground or lower-potential reference; completes clamping path during overvoltage events

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive applications including engine control, ADAS sensors, and body electronics
Wettable flank leads	Enables reliable solder joint inspection via AOI without requiring X-ray or cross-sectioning
Pb-free, Halogen-free	Complies with RoHS Directive 2011/65/EU and JEDEC J-STD-609A Class 1 moisture sensitivity
Low-profile 0.40 mm height	Reduces board-level mechanical interference in stacked or shielded assemblies
Standard tolerance series	±5% Zener voltage tolerance enables cost-effective design where tight regulation is not critical

Applications

Automotive Engine Control Unit (ECU)	USB-C Power Delivery Interface
Use Scenario: Clamping transient spikes on 5 V sensor supply rails in under-hood ECUs exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Primary overvoltage protection element placed directly at microcontroller I/O or analog sensor input pins. Use Value: Maintains <2 µA leakage at 1 V bias to avoid depleting backup battery during sleep mode while clamping >40 V transients within 100 ns.	Use Scenario: Protecting CC logic lines and VCONN routing in compact USB-C receptacles where board space limits discrete TVS selection. IC Role / Device Role / Timing Role: Low-capacitance (≤150 pF) Zener clamp integrated into high-speed differential pair routing paths. Use Value: Prevents false CC detection due to ESD without distorting 300 kHz CC signaling waveform, enabled by sub-0.4 mm profile and wettable flank manufacturability.
Wireless Headset Battery Monitoring	Industrial IoT Sensor Node
Use Scenario: Regulating reference voltage for fuel gauge ICs in ultra-thin Bluetooth headsets with strict height constraints (<0.5 mm total stack-up). IC Role / Device Role / Timing Role: Precision shunt reference providing stable 4.7 V bias to ADC input stage of battery voltage monitor. Use Value: Delivers ±5% V_Z tolerance and +6 mV/°C TC to maintain <1% measurement error across −20 °C to +70 °C operating range.	Use Scenario: Protecting RS-485 transceiver VCC pins in DIN-rail mounted condition monitoring nodes deployed in factory-floor environments. IC Role / Device Role / Timing Role: Secondary clamping device downstream of primary TVS, absorbing residual energy after fast transients. Use Value: Withstands 250 mW continuous dissipation and 40 W non-repetitive peak power, enabling robust multi-stage protection without derating at elevated ambient temperatures.

Automotive Engine Control Unit (ECU)

USB-C Power Delivery Interface

Use Scenario: Clamping transient spikes on 5 V sensor supply rails in under-hood ECUs exposed to load dump and ISO 7637-2 pulses.

IC Role / Device Role / Timing Role: Primary overvoltage protection element placed directly at microcontroller I/O or analog sensor input pins.

Use Value: Maintains <2 µA leakage at 1 V bias to avoid depleting backup battery during sleep mode while clamping >40 V transients within 100 ns.

Use Scenario: Protecting CC logic lines and VCONN routing in compact USB-C receptacles where board space limits discrete TVS selection.

IC Role / Device Role / Timing Role: Low-capacitance (≤150 pF) Zener clamp integrated into high-speed differential pair routing paths.

Use Value: Prevents false CC detection due to ESD without distorting 300 kHz CC signaling waveform, enabled by sub-0.4 mm profile and wettable flank manufacturability.

Wireless Headset Battery Monitoring

Industrial IoT Sensor Node

Use Scenario: Regulating reference voltage for fuel gauge ICs in ultra-thin Bluetooth headsets with strict height constraints (<0.5 mm total stack-up).

IC Role / Device Role / Timing Role: Precision shunt reference providing stable 4.7 V bias to ADC input stage of battery voltage monitor.

Use Value: Delivers ±5% V_Z tolerance and +6 mV/°C TC to maintain <1% measurement error across −20 °C to +70 °C operating range.

Use Scenario: Protecting RS-485 transceiver VCC pins in DIN-rail mounted condition monitoring nodes deployed in factory-floor environments.

IC Role / Device Role / Timing Role: Secondary clamping device downstream of primary TVS, absorbing residual energy after fast transients.

Use Value: Withstands 250 mW continuous dissipation and 40 W non-repetitive peak power, enabling robust multi-stage protection without derating at elevated ambient temperatures.

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
NZ8F4V7MX2WT5G	No SZ prefix; not AEC-Q101 qualified; same electrical specs and package	Restricted to commercial/industrial use; unsuitable for automotive PPAP programs	Select when AEC-Q101 compliance is not required and cost optimization is prioritized
SZNZ8F4V7SMX2WT5G	Tighter ±2.5% Zener tolerance; otherwise identical package, ratings, and qualification	Better suited for precision reference designs where voltage stability dominates cost considerations	Choose when system-level calibration budget requires tighter initial V_Z accuracy

Compared with NZ8F4V7MX2WT5G, SZNZ8F4V7MX2WT5G adds AEC-Q101 qualification and PPAP support for automotive traceability, while SZNZ8F4V7SMX2WT5G improves voltage tolerance at no penalty to thermal or packaging performance-enabling direct substitution where tighter regulation is needed.

Availability

SZNZ8F4V7MX2WT5G is available at Aetrix Electronics and suitable for automotive engine control units, USB-C interface protection, and industrial IoT sensor nodes requiring stable component supply with full AEC-Q101 documentation and traceable sourcing.

Supply support for SZNZ8F4V7MX2WT5G 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 is a global semiconductor supplier delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and edge applications-with emphasis on reliability, safety, and sustainability.

The NZ8F Series is part of onsemi's precision discrete portfolio, engineered specifically for space-constrained voltage regulation and ESD protection in automotive and portable electronics where wettable flank inspection and AEC-Q101 compliance are mandatory.

FAQ

What is the Zener voltage tolerance of SZNZ8F4V7MX2WT5G?

The SZNZ8F4V7MX2WT5G has a standard tolerance Zener voltage range of 4.47 V to 4.94 V at I_ZT = 5 mA, corresponding to ±5% about the nominal 4.7 V rating. This tolerance is confirmed in the Electrical Characteristics table on page 2 of the official onsemi datasheet (Rev. 4, November 2025). The SZNZ8F4V7MX2WT5G does not feature the tighter ±2.5% tolerance found in the SMX2W variant.

Is SZNZ8F4V7MX2WT5G qualified for automotive applications?

Yes, SZNZ8F4V7MX2WT5G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the datasheet's Specification Features section and reinforced by the "SZ" prefix designation. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and ESD-making SZNZ8F4V7MX2WT5G suitable for under-hood and cabin automotive modules including ECUs and ADAS sensor interfaces.

What package type does SZNZ8F4V7MX2WT5G use, and why is it significant?

SZNZ8F4V7MX2WT5G uses the X2DFNW2 (Case 711BG) package-a 0402-inch, 1.00 mm × 0.60 mm × 0.37 mm wettable flank leadless package. Its significance lies in enabling automated optical inspection (AOI) of solder joints without X-ray, critical for high-reliability automotive manufacturing. The low 0.40 mm body height also supports ultra-thin portable designs.

What is the maximum power dissipation for SZNZ8F4V7MX2WT5G on a standard FR-4 board?

SZNZ8F4V7MX2WT5G has a maximum power dissipation of 250 mW at T_A = 25 °C on an FR-4 board with minimum pad layout (1 oz. Cu), derating linearly at 1.5 mW/°C above 25 °C. This rating is defined in the Maximum Ratings table (Note 1) and assumes standard JEDEC-compliant thermal test conditions-not enhanced thermal pads or metal-core substrates.

Does SZNZ8F4V7MX2WT5G have RoHS and halogen-free compliance?

Yes, SZNZ8F4V7MX2WT5G 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. The "G" suffix in the part number denotes Pb-free packaging, and material declarations are available through onsemi's compliance portal for full supply chain traceability.

SZNZ8F4V7MX2WT5G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: NZ8F

Package/Case:: 2-XDFN

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 4.7 V

Tolerance:: ±5%

Power - Max:: 250 mW

Impedance (Max) (Zzt):: 100 Ohms

Current - Reverse Leakage @ Vr:: 2 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)

SZNZ8F4V7MX2WT5G FAQ

1.How can I place an order for SZNZ8F4V7MX2WT5G through Aetrix?

Please submit a Request for Quotation (RFQ) for SZNZ8F4V7MX2WT5G 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 SZNZ8F4V7MX2WT5G reliable?

The price and inventory of SZNZ8F4V7MX2WT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ8F4V7MX2WT5G is usually 5 days.

3.What payment methods are accepted for SZNZ8F4V7MX2WT5G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ8F4V7MX2WT5G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SZNZ8F4V7MX2WT5G?

SZNZ8F4V7MX2WT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SZNZ8F4V7MX2WT5G 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 SZNZ8F4V7MX2WT5G?

For technical support, including SZNZ8F4V7MX2WT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ8F4V7MX2WT5G requirements.

6.How does Aetrix verify that SZNZ8F4V7MX2WT5G is sourced from the original manufacturer or authorized distributors?

All SZNZ8F4V7MX2WT5G 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 SZNZ8F4V7MX2WT5G meets industry standards.

7.What is the process for return or replacement of SZNZ8F4V7MX2WT5G?

All SZNZ8F4V7MX2WT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ8F4V7MX2WT5G, 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 SZNZ8F4V7MX2WT5G part is unused and in its original packaging.

Return procedure for SZNZ8F4V7MX2WT5G:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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