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onsemi SZNZ8F12VSMX2WT5G
- Part No.:
- SZNZ8F12VSMX2WT5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- 2-XDFN
- Datasheet:
-
SZNZ8F12VSMX2WT5G.pdf
- Description:
- DIODE ZENER 12V 250MW 2-X2DFNW
- Quantity:
- Payment:
- Shipping:
Inventory:16,000
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Product details
Overview
SZNZ8F12VSMX2WT5G from onsemi is an AEC-Q101 qualified automotive-grade Zener diode in X2DFNW2 (0402) wettable flank package, providing 11.72 V to 12.28 V nominal Zener voltage at 5 mA test current, 30 Ω dynamic impedance, and 0.1 µA leakage at 9 V reverse bias-designed for precision voltage regulation in space-constrained automotive control units.
For engineers reviewing the SZNZ8F12VSMX2WT5G datasheet, pinout, applications, or equivalent options, key selection criteria include tight ±2.3% Zener tolerance, 250 mW power dissipation on FR-4 (1 oz Cu, min pad), wettable flank geometry for AOI compatibility, and AEC-Q101 qualification for under-hood automotive use.
Technical Context
This device operates as a unidirectional voltage reference diode with sharp reverse breakdown characteristics, optimized for low-capacitance (80 pF @ 0 V, 1 MHz) and stable temperature coefficient (±9 mV/°C typical) across −65 °C to +150 °C junction range. Its X2DFNW2 package features solderable flank sidewalls enabling automated optical inspection of solder joint integrity.
The SZNZ8F12VSMX2WT5G belongs to the NZ8F "tight tolerance" series (denoted by 'S' in part number), distinguishing it from standard-tolerance variants by tighter VZ spread (±2.3% vs. ±4.2% for MX2W), lower leakage at rated VR, and identical forward voltage (≤0.9 V @ 10 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.72 V to 12.28 V @ IZT = 5 mA - defines regulated output voltage window under nominal test conditions |
| Zener Impedance (ZZT) | 30 Ω max @ IZT = 5 mA - determines voltage regulation stability under load transients |
| Leakage Current (IR) | 0.1 µA max @ VR = 9 V - ensures minimal standby power loss in high-impedance bias networks |
| Power Dissipation (PD) | 250 mW @ TA = 25 °C (FR-4, 1 oz Cu, min pad) - sets maximum continuous thermal load on PCB |
| Capacitance (C) | 80 pF @ VR = 0 V, f = 1 MHz - limits high-frequency signal coupling in RF-adjacent circuits |
| Junction Temp Range | −65 °C to +150 °C - supports operation in engine compartment and powertrain ECUs |
| AEC-Q101 Qualified | Yes - validates reliability for automotive electronic systems per stress-test requirements |
Pinout & Package
X2DFNW2 (Case 711BG) surface-mount package: 0402 inch footprint (1.00 mm × 0.60 mm), 0.37 mm body height, wettable flank sidewalls for AOI, Pb-free/RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener cathode terminal | Connected to regulated voltage rail; reverse-biased during regulation; marking side identifies cathode |
| 2 (Anode) | Zener anode terminal | Connected to ground or lower-potential node; completes reverse-bias path for breakdown conduction |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener tolerance | ±2.3% (11.72–12.28 V) enables precise voltage clamping without post-production trimming |
| Wettable flank package | X2DFNW2 geometry allows full-solder-joint inspection via AOI, improving manufacturing yield in automotive SMT lines |
| AEC-Q101 qualification | Validated for automotive applications including engine control, ADAS sensors, and body electronics |
| Low profile height | 0.40 mm max - fits beneath low-clearance shields and in ultra-thin portable modules |
| Pb-free & RoHS compliant | Meets global environmental regulations and lead-free reflow process requirements (J-STD-020) |
Applications
| Engine Control Unit (ECU) Voltage Reference | ADAS Camera Module Bias Supply |
|---|---|
Use Scenario: Providing stable 12 V reference for analog sensor signal conditioning in gasoline/diesel engine management systems. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp and stabilize supply rail for microcontroller ADC references. Use Value: Tight ±2.3% VZ tolerance and −65 °C to +150 °C operation ensure consistent ADC accuracy across full automotive temperature range. | Use Scenario: Regulating bias voltage for CMOS image sensor analog front-end in 77 GHz radar or surround-view camera modules. IC Role / Device Role / Timing Role: Low-capacitance (80 pF) Zener used as shunt regulator to suppress supply ripple affecting pixel-level analog gain. Use Value: 80 pF capacitance minimizes high-frequency noise coupling into sensitive imaging circuitry while maintaining stable DC bias. |
| Automotive Infotainment Power Sequencing | Electric Power Steering (EPS) MCU Reset Circuit |
Use Scenario: Generating clean 12 V reset threshold for multi-rail power sequencing in head unit SoC subsystems. IC Role / Device Role / Timing Role: Zener-based voltage detector feeding comparator input to trigger controlled power-up sequence. Use Value: 0.1 µA leakage at 9 V ensures negligible current draw during deep sleep, extending battery reserve time. | Use Scenario: Setting precise reset voltage threshold for EPS motor controller MCU during 12 V battery brownout events. IC Role / Device Role / Timing Role: Shunt regulator defining reliable reset point independent of LDO dropout behavior. Use Value: AEC-Q101 qualification guarantees functional safety compliance (ISO 26262 ASIL-B support) in steering-critical systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NZ8F12VSMX2WT5G | No SZ prefix; not AEC-Q101 qualified; same electrical specs and package | Intended for commercial/industrial use only; unsuitable for automotive production | Select only if AEC-Q101 compliance is not required and cost sensitivity outweighs qualification needs |
| SZNZ8F12VMX2WT5G | Standard tolerance (±4.2%): 11.40–12.60 V; otherwise identical package, ratings, and qualification | Acceptable where looser voltage tolerance is permitted (e.g., non-critical overvoltage clamping) | Choose when ±2.3% tolerance is unnecessary and higher leakage (0.1 µA vs. 0.1 µA same) or impedance (30 Ω vs. 30 Ω same) is acceptable |
Compared with SZNZ8F12VSMX2WT5G, NZ8F12VSMX2WT5G lacks automotive qualification but matches all electrical parameters, while SZNZ8F12VMX2WT5G trades tighter tolerance for broader VZ spread-making the original optimal for AEC-Q101–mandated precision regulation.
Availability
SZNZ8F12VSMX2WT5G is available at Aetrix Electronics and suitable for automotive engine control units, ADAS camera modules, and electric power steering systems requiring stable component supply with full traceability and lifecycle management.
Supply support for SZNZ8F12VSMX2WT5G 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 semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NZ8F Series is designed specifically for high-reliability, space-constrained voltage regulation in automotive electronics-emphasizing AEC-Q101 qualification, wettable flank packaging for process robustness, and tight parametric control across temperature.
FAQ
What is the Zener voltage tolerance of SZNZ8F12VSMX2WT5G?
SZNZ8F12VSMX2WT5G has a tight Zener voltage tolerance of ±2.3%, specified as 11.72 V minimum to 12.28 V maximum at IZT = 5 mA. This tolerance is confirmed in the "Tight Tolerance Series" table on page 3 of the official onsemi datasheet (Rev. 4, Nov. 2025), distinguishing it from standard-tolerance NZ8FxxxMX2WT5G variants.
Is SZNZ8F12VSMX2WT5G qualified for automotive applications?
Yes, SZNZ8F12VSMX2WT5G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the datasheet's "Specification Features" section and reinforced by the "SZ" prefix denoting automotive and other applications requiring unique site and control change requirements. This qualification covers temperature cycling, mechanical shock, and humidity testing per AEC standards.
What package type does SZNZ8F12VSMX2WT5G use, and why is it significant?
SZNZ8F12VSMX2WT5G uses the X2DFNW2 (Case 711BG) package-a 0402-size, wettable flank, 2-terminal surface-mount device. Its significance lies in enabling Automated Optical Inspection (AOI) of solder joints via flank-side solder fillet visibility, which improves manufacturing defect detection in high-volume automotive PCB assembly.
What is the maximum power dissipation rating for SZNZ8F12VSMX2WT5G?
SZNZ8F12VSMX2WT5G has a maximum power dissipation of 250 mW at TA = 25 °C on FR-4 board with minimum pad layout (1 oz Cu), derating linearly at 1.5 mW/°C above that temperature. This rating is defined in Note 1 of the Maximum Ratings table on page 1 of the onsemi datasheet and applies to standard PCB mounting conditions.
Does SZNZ8F12VSMX2WT5G have RoHS and halogen-free compliance?
Yes, SZNZ8F12VSMX2WT5G is Pb-free, halogen-free/BFR-free, and RoHS compliant, as confirmed in the "Specification Features" section of the datasheet. This compliance aligns with global environmental directives and supports lead-free reflow soldering processes per J-STD-020.
SZNZ8F12VSMX2WT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- NZ8F
- Package/Case:
- 2-XDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 12 V
- Tolerance:
- ±2.33%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 9 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)
SZNZ8F12VSMX2WT5G FAQ
1.How can I place an order for SZNZ8F12VSMX2WT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZ8F12VSMX2WT5G 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 SZNZ8F12VSMX2WT5G reliable?
The price and inventory of SZNZ8F12VSMX2WT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ8F12VSMX2WT5G is usually 5 days.
3.What payment methods are accepted for SZNZ8F12VSMX2WT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ8F12VSMX2WT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZ8F12VSMX2WT5G?
SZNZ8F12VSMX2WT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZ8F12VSMX2WT5G 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 SZNZ8F12VSMX2WT5G?
For technical support, including SZNZ8F12VSMX2WT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ8F12VSMX2WT5G requirements.
6.How does Aetrix verify that SZNZ8F12VSMX2WT5G is sourced from the original manufacturer or authorized distributors?
All SZNZ8F12VSMX2WT5G 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 SZNZ8F12VSMX2WT5G meets industry standards.
7.What is the process for return or replacement of SZNZ8F12VSMX2WT5G?
All SZNZ8F12VSMX2WT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ8F12VSMX2WT5G, 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 SZNZ8F12VSMX2WT5G part is unused and in its original packaging.
Return procedure for SZNZ8F12VSMX2WT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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