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onsemi SZNZ8F3V3SMX2WT5G
- Part No.:
- SZNZ8F3V3SMX2WT5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- 2-XDFN
- Datasheet:
-
SZNZ8F3V3SMX2WT5G.pdf
- Description:
- DIODE ZENER 3.3V 250MW 2-X2DFNW
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
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Product details
Overview
SZNZ8F3V3SMX2WT5G from onsemi is an AEC-Q101-qualified Zener diode in X2DFNW2 (0402) wettable flank package, providing 3.14–3.47 V nominal Zener breakdown at 5 mA, 100 Ω max dynamic impedance, and 10 nA leakage at 1 V reverse bias-designed for precision voltage clamping in automotive control units and space-constrained portable electronics.
For engineers reviewing the SZNZ8F3V3SMX2WT5G datasheet, pinout, applications, or equivalent options, key selection criteria include tight ±1.5% Zener voltage tolerance, 0.40 mm body height for AOI-compatible assembly, thermal resistance of 247 °C/W on 150 mm² FR-4 board, and automotive-grade reliability per AEC-Q101.
Technical Context
This device operates as a unidirectional voltage reference and transient clamp, with Zener conduction initiated at reverse bias above its specified breakdown range. Its low 0.40 mm profile and wettable flank geometry support automated optical inspection and high-density PCB layouts.
The SZNZ8F3V3SMX2WT5G delivers stable regulation under DC and low-frequency transients, with temperature coefficient optimized for minimal drift across −65 °C to +150 °C junction range. It exhibits 210 pF capacitance at 0 V bias and 1 MHz, suitable for ESD-sensitive signal line protection without excessive bandwidth degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.14–3.47 V @ IZT = 5 mA - defines precise clamping threshold for 3.3 V rail protection |
| Zener Impedance (ZZT) | ≤100 Ω @ IZT = 5 mA - ensures minimal voltage shift under load variation |
| Leakage Current (IR) | ≤10 nA @ VR = 1 V - enables low-power standby operation without parasitic drain |
| Power Dissipation (PD) | 500 mW @ TA = 25 °C on 150 mm² FR-4 - supports higher continuous dissipation than standard 250 mW variant |
| Capacitance (C) | 210 pF @ VR = 0 V, f = 1 MHz - balances ESD suppression effectiveness with signal integrity in 10–100 MHz interfaces |
| Junction Temp Range | −65 °C to +150 °C - certified for under-hood automotive environments and industrial edge nodes |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
X2DFNW2 (Case 711BG) surface-mount package: 1.00 mm × 0.60 mm × 0.37 mm, 0.65 mm pitch, wettable flank side walls for solder joint inspection. Low-profile 0.40 mm body height enables stacking and fine-pitch routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener anode connection point in reverse-bias configuration | Connected to protected node (e.g., MCU I/O line); accepts reverse current during overvoltage events |
| 2 (Anode) | Zener cathode connection point in reverse-bias configuration | Typically tied to ground or lower-potential rail; completes clamping path during transient suppression |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener tolerance | ±1.5% (3.14–3.47 V range) - reduces design margin needed for 3.3 V system rails |
| Wettable flank leads | Side-wall metallization enables AOI verification of solder fillet - critical for zero-defect automotive manufacturing |
| AEC-Q101 qualification | Validated for automotive use including PPAP documentation support - eliminates requalification effort for Tier 1 suppliers |
| Pb-free, Halogen-free | RoHS-compliant construction with no BFRs - meets EU ELV and China RoHS requirements for vehicle electronics |
| Low thermal resistance | 247 °C/W on 150 mm² FR-4 - allows sustained 500 mW operation without external heatsinking |
Applications
| Automotive Body Control Module | Industrial Sensor Interface |
|---|---|
Use Scenario: Clamping CAN transceiver I/O pins against load dump transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional voltage clamp protecting PHY-level signal lines from >40 V spikes. Use Value: Prevents latch-up or permanent damage to transceivers while maintaining <210 pF loading on 500 kbps bus signals. | Use Scenario: Stabilizing reference voltage for 16-bit ADC inputs in factory-floor pressure sensors. IC Role / Device Role / Timing Role: Precision shunt reference establishing 3.3 V analog domain ceiling. Use Value: Enables ±0.5 LSB accuracy by limiting reference drift to <±10 mV over −40 °C to +85 °C ambient. |
| Portable Medical Monitor | Automotive Infotainment Display |
Use Scenario: Protecting touch controller supply rail from ESD events during hospital handling. IC Role / Device Role / Timing Role: ESD transient suppressor on 3.3 V VDDIO line of capacitive touch IC. Use Value: Absorbs 8 kV contact discharge per IEC 61000-4-2 without degrading touch sensitivity due to low 210 pF capacitance. | Use Scenario: Regulating backlight LED driver feedback node in TFT-LCD display power stage. IC Role / Device Role / Timing Role: Voltage reference for current-sense amplifier in constant-current LED string control. Use Value: Maintains ±1% LED brightness uniformity across temperature via stable 3.3 V reference with <±0.01%/°C TC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1SMB5913BT3G | 500 mW DO-214AA package; 3.3 V ±5%; 10 Ω ZZT; 1000 pF C | Larger footprint (4.5 mm × 3.2 mm); unsuitable for 0402 layouts or AOI | Select when higher surge capability (600 W PPK) outweighs size and inspection constraints |
| BZX84-C3V3-7-F | 350 mW SOT-23; 3.3 V ±5%; 90 Ω ZZT; 450 pF C; not AEC-Q101 qualified | No automotive qualification; higher capacitance limits high-speed signal use | Select for cost-sensitive consumer portables where AEC-Q101 and AOI are not required |
Compared with SZNZ8F3V3SMX2WT5G, the 1SMB5913BT3G offers superior surge handling but requires PCB redesign and forfeits AOI compatibility, while the BZX84-C3V3-7-F reduces cost and improves Zener impedance but lacks automotive qualification and increases signal-line capacitance by 114%.
Availability
SZNZ8F3V3SMX2WT5G is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, and portable medical monitors requiring stable component supply with full traceability and lifecycle management.
Supply support for SZNZ8F3V3SMX2WT5G 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, 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 and ESD protection in automotive and portable electronics.
FAQ
What is the Zener voltage tolerance of SZNZ8F3V3SMX2WT5G?
The SZNZ8F3V3SMX2WT5G has a tight Zener voltage tolerance of ±1.5%, with a specified breakdown range of 3.14 V to 3.47 V at 5 mA test current. This tighter tolerance compared to standard-series NZ8F diodes enables more accurate voltage clamping in 3.3 V system rails without additional design margin. The SZNZ8F3V3SMX2WT5G achieves this via process-controlled doping and post-trim validation.
Is SZNZ8F3V3SMX2WT5G qualified for automotive applications?
Yes, SZNZ8F3V3SMX2WT5G is AEC-Q101 qualified and PPAP capable, with full stress test validation including high-temperature reverse bias (HTRB), high-temperature gate bias (HTGB), and temperature cycling (TCT). The "SZ" prefix explicitly denotes compliance with automotive site and control change requirements, making the SZNZ8F3V3SMX2WT5G suitable for under-hood and cabin electronics without requalification.
What is the maximum power dissipation of SZNZ8F3V3SMX2WT5G?
The SZNZ8F3V3SMX2WT5G supports 500 mW total device dissipation at 25 °C ambient when mounted on a 150 mm² FR-4 board with 1 oz. copper, derating linearly at 1.2 mW/°C above that temperature. This rating exceeds the 250 mW rating of the minimum-pad variant and reflects optimized thermal pad layout-critical for sustained operation in automotive control units where ambient temperatures exceed 85 °C.
Does SZNZ8F3V3SMX2WT5G support automated optical inspection (AOI)?
Yes, SZNZ8F3V3SMX2WT5G uses the X2DFNW2 package with wettable flank side walls, enabling reliable solder fillet inspection using standard AOI systems. This feature is explicitly called out in the datasheet as supporting optimal automated optical inspection, and is essential for zero-defect manufacturing in automotive electronics where visual solder joint verification is mandated.
What is the reverse leakage current specification for SZNZ8F3V3SMX2WT5G?
The SZNZ8F3V3SMX2WT5G specifies a maximum reverse leakage current (IR) of 10 nA at VR = 1 V and TA = 25 °C. This ultra-low leakage supports battery-powered applications such as portable medical monitors, where standby current must remain below 100 nA per protection device. The value is measured and guaranteed per the Electrical Characteristics table on page 3 of the official onsemi datasheet.
SZNZ8F3V3SMX2WT5G 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:
- ±5%
- 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)
SZNZ8F3V3SMX2WT5G FAQ
1.How can I place an order for SZNZ8F3V3SMX2WT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZ8F3V3SMX2WT5G 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 SZNZ8F3V3SMX2WT5G reliable?
The price and inventory of SZNZ8F3V3SMX2WT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ8F3V3SMX2WT5G is usually 5 days.
3.What payment methods are accepted for SZNZ8F3V3SMX2WT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ8F3V3SMX2WT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZ8F3V3SMX2WT5G?
SZNZ8F3V3SMX2WT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZ8F3V3SMX2WT5G 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 SZNZ8F3V3SMX2WT5G?
For technical support, including SZNZ8F3V3SMX2WT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ8F3V3SMX2WT5G requirements.
6.How does Aetrix verify that SZNZ8F3V3SMX2WT5G is sourced from the original manufacturer or authorized distributors?
All SZNZ8F3V3SMX2WT5G 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 SZNZ8F3V3SMX2WT5G meets industry standards.
7.What is the process for return or replacement of SZNZ8F3V3SMX2WT5G?
All SZNZ8F3V3SMX2WT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ8F3V3SMX2WT5G, 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 SZNZ8F3V3SMX2WT5G part is unused and in its original packaging.
Return procedure for SZNZ8F3V3SMX2WT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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