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onsemi SZNZ8F9V1SMX2WT5G
- Part No.:
- SZNZ8F9V1SMX2WT5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- 2-XDFN
- Datasheet:
-
SZNZ8F9V1SMX2WT5G.pdf
- Description:
- DIODE ZENER 9.1V 250MW 2-X2DFNW
- Quantity:
- Payment:
- Shipping:
Inventory:8,000
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Product details
Overview
SZNZ8F9V1SMX2WT5G from onsemi is a 9.1 V ±2.5% tight-tolerance Zener diode in X2DFNW2 (0402) wettable flank package, rated for 250 mW dissipation at 25 °C, with 30 µA leakage at 6 V and 80 pF capacitance at 0 V/1 MHz - used for precision voltage clamping in automotive control units and portable power rails.
For engineers reviewing the SZNZ8F9V1SMX2WT5G datasheet, pinout, applications, or equivalent options, key selection criteria include AEC-Q101 qualification, 0.40 mm body height, wettable flank geometry for AOI, ±2.5% VZ tolerance, and thermal resistance of 415 °C/W on FR-4 minimum pad layout.
Technical Context
This device operates as a unidirectional voltage reference and overvoltage clamp, with nominal Zener voltage of 9.1 V defined at IZT = 5 mA. Its low 80 pF junction capacitance enables stable performance in high-frequency signal line protection, while the −65 °C to +150 °C operating range supports under-hood automotive environments.
The X2DFNW2 package features exposed cathode/anode terminals on the bottom side and wettable flanks for solder fillet inspection. Thermal derating follows 1.5 mW/°C above 25 °C on minimal FR-4 pads, and the device exhibits a positive temperature coefficient near 9.1 V, typical of mid-voltage Zeners.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.89 V to 9.31 V at IZT = 5 mA - ensures ±2.5% regulation accuracy for feedback sensing in DC-DC converters |
| Power Dissipation (PD) | 250 mW at TA = 25 °C on FR-4 minimum pad - defines maximum continuous clamping energy without thermal runaway |
| Zener Impedance (ZZT) | 30 Ω max at IZT = 5 mA - maintains stable regulation under dynamic load transients |
| Reverse Leakage (IR) | 0.5 µA max at VR = 6 V - minimizes quiescent current loss in battery-powered systems |
| Junction Capacitance (C) | 80 pF at VR = 0 V, f = 1 MHz - limits high-frequency signal distortion in ESD-coupled data lines |
| Package | X2DFNW2 (0402, 1.00 × 0.60 × 0.37 mm) - enables ultra-compact placement with AOI-compatible wettable flanks |
| AEC-Q101 Qualified | Qualified per AEC-Q101 Rev D - validated for automotive electronics including engine control modules and ADAS sensors |
Pinout & Package
The SZNZ8F9V1SMX2WT5G uses the X2DFNW2 surface-mount package (Case 711BG), with 0.40 mm profile and wettable flank sidewalls for automated optical inspection. Cathode and anode are exposed on the bottom side; no top-side markings indicate polarity - orientation is defined by PCB pad layout per JEDEC MO-252.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Terminal 1 (Cathode) | Zener breakdown terminal | Connected to regulated node; reverse-biased during clamping; requires low-inductance ground return path |
| Terminal 2 (Anode) | Reference/reference return | Connected to system ground or lower-potential rail; forms current path during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| Tight Zener voltage tolerance | ±2.5% (S-series) - reduces calibration overhead in precision voltage monitor circuits |
| Wettable flank geometry | Full-side solder fillet visibility - enables 100% AOI coverage without x-ray for automotive production lines |
| AEC-Q101 qualification | Validated for automotive temperature cycling, HTRB, and ESD robustness - eliminates requalification for Tier 1 ECUs |
| Low-profile packaging | 0.37 mm max height - allows placement beneath connectors or under shields in space-constrained modules |
| Pb-free, RoHS-compliant | Halogen-free/BFR-free construction - meets EU ELV and China RoHS requirements for vehicle end-of-life compliance |
Applications
| Automotive Engine Control Unit (ECU) Power Rail Clamp | USB-C Port Overvoltage Protection |
|---|---|
Use Scenario: Clamps transient spikes on 12 V supply rail in engine control modules exposed to load dump and ISO 7637-2 pulses. IC Role / Device Role / Timing Role: Standby shunt regulator that conducts only during overvoltage events >9.31 V, diverting surge current to ground. Use Value: Prevents damage to MCU power supplies and CAN transceivers with <0.5 µA leakage at 6 V and 30 Ω dynamic impedance. | Use Scenario: Protects USB-C CC and VBUS lines from accidental 20 V adapter misconnection or hot-swap surges. IC Role / Device Role / Timing Role: Fast-response voltage clamp placed directly at connector entry point, leveraging 80 pF capacitance to avoid signal integrity degradation. Use Value: Enables compact dual-line protection without sacrificing USB 2.0 signal bandwidth due to low parasitic capacitance. |
| Industrial Sensor Signal Conditioning | Portable Medical Device Battery Monitor Reference |
Use Scenario: Stabilizes excitation voltage for bridge-based pressure sensors in factory automation equipment operating across −40 °C to +125 °C. IC Role / Device Role / Timing Role: Precision voltage reference source with ±2.5% tolerance and stable TC near 9.1 V, biasing sensor Wheatstone bridges. Use Value: Maintains measurement accuracy over temperature without active compensation, supported by AEC-Q101 reliability validation. | Use Scenario: Provides stable 9.1 V reference for ADC-based Li-ion cell voltage monitoring in handheld diagnostic tools. IC Role / Device Role / Timing Role: Low-leakage Zener reference in high-impedance divider network, minimizing battery drain during sleep mode. Use Value: Delivers <0.5 µA leakage at 6 V and 250 mW rating for intermittent surge handling during charging events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NZ8F9V1MX2WT5G | Standard tolerance (±5%) vs. ±2.5%; otherwise identical electrical specs and package | Acceptable where calibration margin permits wider VZ spread; not qualified for AEC-Q101 | Select SZNZ8F9V1SMX2WT5G when automotive qualification or tighter regulation is required |
| BZX384-B9V1,115 | SO-23 package (1.3 × 1.15 mm); ±5% tolerance; 300 mW rating; no wettable flanks | Larger footprint; unsuitable for AOI-dependent automotive lines; higher thermal resistance (~350 °C/W) | Choose SZNZ8F9V1SMX2WT5G for space-constrained, AOI-verified, and AEC-Q101–compliant designs |
Compared with NZ8F9V1MX2WT5G and BZX384-B9V1,115, the SZNZ8F9V1SMX2WT5G uniquely combines AEC-Q101 qualification, ±2.5% tolerance, wettable flank geometry, and 0402 size - enabling first-pass yield in automotive PCB assembly while maintaining precision clamping performance.
Availability
SZNZ8F9V1SMX2WT5G is available at Aetrix Electronics and suitable for automotive engine control units, USB-C interface protection, and industrial sensor signal conditioning requiring stable component supply across extended temperature ranges and high-reliability manufacturing flows.
Supply support for SZNZ8F9V1SMX2WT5G 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, serving automotive, industrial, cloud, medical, and IoT markets with differentiated silicon and packaging technologies.
The NZ8F Series is designed specifically for space-constrained, high-reliability voltage regulation - emphasizing AEC-Q101 qualification, wettable flank packages for automotive AOI, and tight-tolerance Zener performance in 0402 footprints.
FAQ
What is the Zener voltage tolerance of SZNZ8F9V1SMX2WT5G?
The SZNZ8F9V1SMX2WT5G has a Zener voltage tolerance of ±2.5%, specified as 8.89 V to 9.31 V at test current IZT = 5 mA. This tight tolerance is part of the "S" series designation and is confirmed in the Electrical Characteristics table on page 3 of the onsemi datasheet. The SZNZ8F9V1SMX2WT5G is intended for applications requiring higher regulation accuracy than standard-tolerance variants.
Is SZNZ8F9V1SMX2WT5G qualified for automotive use?
Yes, the SZNZ8F9V1SMX2WT5G is AEC-Q101 qualified and PPAP capable, as explicitly stated in the datasheet's Specification Features section and reinforced by the "SZ" prefix. It is designed for automotive applications including engine control units and ADAS sensors, with validated performance across −65 °C to +150 °C junction temperature range and rigorous stress testing per AEC-Q101 Rev D.
What package type does SZNZ8F9V1SMX2WT5G use, and why is it significant?
The SZNZ8F9V1SMX2WT5G uses the X2DFNW2 package (JEDEC MO-252, Case 711BG), a 0402-sized wettable flank device measuring 1.00 × 0.60 × 0.37 mm. Its significance lies in AOI compatibility - the wettable flanks enable full-side solder fillet inspection - and its ultra-low profile, which supports placement in dense automotive and portable PCB layouts where height clearance is constrained.
How does the thermal performance of SZNZ8F9V1SMX2WT5G compare between different board configurations?
The SZNZ8F9V1SMX2WT5G has two thermal ratings: 415 °C/W (RJA) on FR-4 with minimum pad (1 oz. Cu), and 247 °C/W on FR-4 with 150 mm² copper area (1 oz. Cu). Power derating is 1.5 mW/°C above 25 °C for the minimum-pad case and 1.2 mW/°C for the enhanced layout. These values are critical for determining safe operating area in thermally limited automotive modules.
What is the maximum reverse leakage current for SZNZ8F9V1SMX2WT5G, and at what voltage is it measured?
The maximum reverse leakage current for SZNZ8F9V1SMX2WT5G is 0.5 µA, measured at VR = 6 V and TA = 25 °C. This value is specified in the Electrical Characteristics table on page 3 of the onsemi datasheet for the tight-tolerance "S" series. Low leakage ensures minimal standby power loss in battery-operated and always-on automotive subsystems.
SZNZ8F9V1SMX2WT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- NZ8F
- Package/Case:
- 2-XDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 9.1 V
- Tolerance:
- ±2.31%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 30 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 6 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)
SZNZ8F9V1SMX2WT5G FAQ
1.How can I place an order for SZNZ8F9V1SMX2WT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZ8F9V1SMX2WT5G 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 SZNZ8F9V1SMX2WT5G reliable?
The price and inventory of SZNZ8F9V1SMX2WT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ8F9V1SMX2WT5G is usually 5 days.
3.What payment methods are accepted for SZNZ8F9V1SMX2WT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ8F9V1SMX2WT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZ8F9V1SMX2WT5G?
SZNZ8F9V1SMX2WT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZ8F9V1SMX2WT5G 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 SZNZ8F9V1SMX2WT5G?
For technical support, including SZNZ8F9V1SMX2WT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ8F9V1SMX2WT5G requirements.
6.How does Aetrix verify that SZNZ8F9V1SMX2WT5G is sourced from the original manufacturer or authorized distributors?
All SZNZ8F9V1SMX2WT5G 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 SZNZ8F9V1SMX2WT5G meets industry standards.
7.What is the process for return or replacement of SZNZ8F9V1SMX2WT5G?
All SZNZ8F9V1SMX2WT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ8F9V1SMX2WT5G, 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 SZNZ8F9V1SMX2WT5G part is unused and in its original packaging.
Return procedure for SZNZ8F9V1SMX2WT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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