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onsemi SZNZ8F5V1SMX2WT5G
- Part No.:
- SZNZ8F5V1SMX2WT5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- 2-XDFN
- Datasheet:
-
SZNZ8F5V1SMX2WT5G.pdf
- Description:
- DIODE ZENER 5.1V 250MW 2-X2DFNW
- Quantity:
- Payment:
- Shipping:
Inventory:4,063
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Product details
Overview
SZNZ8F5V1SMX2WT5G from onsemi is an AEC-Q101-qualified Zener diode in X2DFNW2 (0402) wettable flank package, delivering 4.98 V to 5.22 V nominal reverse breakdown voltage at 5 mA test current, with ±2.2% tolerance, 80 Ω maximum dynamic impedance, and 2 µA max leakage at 1.5 V reverse bias. It serves as a precision voltage reference and overvoltage clamp in automotive control units and portable power rails.
For engineers reviewing the SZNZ8F5V1SMX2WT5G datasheet, pinout, applications, or equivalent options, key selection criteria include tight Zener voltage tolerance, low-profile 0.40 mm height for AOI-compatible assembly, AEC-Q101 qualification for automotive use, and 250 mW dissipation on FR-4 with 1 oz. Cu pad.
Technical Context
This device operates as a unidirectional Zener regulator with specified reverse conduction behavior above its breakdown threshold and forward conduction below 0.9 V at 10 mA. Its thermal resistance is 415 °C/W (FR-4 minimum pad) and 247 °C/W (FR-4 150 mm² pad), enabling stable regulation under transient power loads up to 40 W non-repetitive peak reverse power.
The SZNZ8F5V1SMX2WT5G exhibits a typical temperature coefficient near 0 mV/°C for its 5.1 V nominal range and capacitance of 130 pF at 0 V bias and 1 MHz - critical for ESD-sensitive signal line clamping where parasitic capacitance must be constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.98 V to 5.22 V @ IZT = 5 mA - ensures precise clamping within ±2.2% across production lot |
| Zener Impedance (ZZT) | ≤80 Ω @ IZT = 5 mA - maintains stable regulation under varying load currents |
| Leakage Current (IR) | ≤2 µA @ VR = 1.5 V - minimizes standby power loss in battery-backed circuits |
| Capacitance (C) | 130 pF @ VR = 0 V, f = 1 MHz - suitable for high-speed data line protection without signal distortion |
| Power Dissipation (PD) | 250 mW @ TA = 25 °C (FR-4 min pad) - defines continuous operating limit for PCB layout thermal design |
| Junction Temp Range | −65 °C to +150 °C - supports operation in under-hood automotive environments |
| AEC-Q101 Qualified | Yes - validated for automotive electronics per stress test requirements including HTGB, HTRB, and TCT |
Pinout & Package
X2DFNW2 surface-mount package (Case 711BG), 1.00 mm × 0.60 mm × 0.37 mm body, 0.40 mm max height, wettable flank geometry for automated optical inspection. Industry-standard 0402 footprint with exposed cathode/anode terminals on bottom side.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener cathode terminal | Connected to higher-potential node; reverse-biased during regulation; marking side identifies this terminal |
| 2 (Anode) | Zener anode terminal | Connected to lower-potential node (e.g., ground or return path); completes reverse-bias path for clamping |
Key Features
| Feature | Design Value |
|---|---|
| Tight voltage tolerance | ±2.2% (SZNZ8F5V1SMX2WT5G vs. ±5% standard series) - reduces calibration overhead in precision sensing |
| Wettable flank package | Enables 100% AOI solder joint verification - eliminates manual inspection in automotive SMT lines |
| AEC-Q101 qualification | Validated for automotive grade reliability - required for engine control, ADAS, and body electronics |
| Pb-free, Halogen-free | RoHS-compliant construction - meets EU and global environmental compliance mandates without derating |
| Low profile (0.40 mm) | Minimizes board stack height in space-constrained modules like telematics and infotainment head units |
Applications
| Automotive Engine Control Unit | USB-C Power Delivery Clamp |
|---|---|
Use Scenario: Protects microcontroller I/O pins and sensor interfaces from load dump transients in 12 V vehicle electrical systems. IC Role / Device Role / Timing Role: Unidirectional voltage clamp placed between supply rail and ground, conducting only when reverse voltage exceeds 5.1 V. Use Value: Prevents latch-up and permanent damage to 5 V logic circuits during ISO 7637-2 pulse 5a events with no additional active circuitry. |
Use Scenario: Shields CC line and VCONN monitoring circuitry from ESD and overvoltage during hot-plug insertion. IC Role / Device Role / Timing Role: Fast-response shunt element that clamps transients before they reach USB PD controller inputs. Use Value: Maintains 130 pF capacitance to avoid signal integrity degradation while meeting IEC 61000-4-2 Level 4 (15 kV air) immunity. |
| Industrial PLC Analog Input Protection | Medical Wearable Battery Monitor |
Use Scenario: Guards 4–20 mA loop receiver inputs against field wiring faults and induced surges in factory automation cabinets. IC Role / Device Role / Timing Role: Standby-mode Zener referenced to system ground, activated only during overvoltage fault conditions. Use Value: Limits input voltage to ≤5.22 V while drawing <2 µA leakage - preserves accuracy of 16-bit ADC front-end without offset drift. |
Use Scenario: Stabilizes reference voltage for fuel gauge ICs in lithium-ion powered patient monitors and glucose meters. IC Role / Device Role / Timing Role: Low-drift, low-leakage shunt reference providing stable 5.1 V node for ADC and comparator thresholds. Use Value: Enables ±0.5% state-of-charge accuracy over −20 °C to +70 °C due to near-zero TC and tight initial tolerance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMBZ5221BS-7-F | 5.1 V ±5%, 200 mW, SOT-23 package (3.0 mm × 1.4 mm), no AEC-Q101 rating | Larger footprint; unsuitable for AOI-driven automotive production; higher thermal resistance (~300 °C/W) | Select when cost sensitivity outweighs automotive qualification and space constraints |
| BZX84-C5V1LT1G | 5.1 V ±5%, 350 mW, SOT-23 package, AEC-Q101 qualified but no wettable flank | Lacks AOI compatibility; 0.9 mm height limits ultra-thin designs; higher capacitance (180 pF) | Choose for legacy SOT-23 layouts requiring AEC-Q101 compliance without rework |
Compared with MMBZ5221BS-7-F and BZX84-C5V1LT1G, the SZNZ8F5V1SMX2WT5G delivers tighter tolerance, smaller 0402 footprint, wettable flank for process assurance, and identical AEC-Q101 qualification - making it optimal for new automotive and portable designs demanding miniaturization and manufacturing traceability.
Availability
SZNZ8F5V1SMX2WT5G is available at Aetrix Electronics and suitable for automotive engine control units, USB-C power delivery protection, and industrial PLC analog input stages requiring stable component supply with full traceability and lifecycle management.
Supply support for SZNZ8F5V1SMX2WT5G 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 compact, high-reliability voltage regulation in automotive and portable electronics where space, thermal performance, and process verifiability are critical.
FAQ
What is the Zener voltage tolerance of SZNZ8F5V1SMX2WT5G?
The SZNZ8F5V1SMX2WT5G has a nominal Zener voltage range of 4.98 V to 5.22 V at 5 mA test current, corresponding to a ±2.2% tolerance. This tight specification is defined in the "Tight Tolerance Series" (indicated by the 'S' in the part number) and is verified per onsemi's NZ8FxxxSMX2W Electrical Characteristics table on page 3 of the datasheet.
Is SZNZ8F5V1SMX2WT5G qualified for automotive applications?
Yes, SZNZ8F5V1SMX2WT5G is AEC-Q101 qualified and PPAP capable, as confirmed in the datasheet's Specification Features section and device marking note (*Includes SZ prefix where applicable: SZ Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements). The 'SZ' prefix explicitly denotes automotive-grade screening and control.
What package type does SZNZ8F5V1SMX2WT5G use, and why is it significant?
SZNZ8F5V1SMX2WT5G uses the X2DFNW2 (Case 711BG) package - a 0402-sized, 0.40 mm low-profile, wettable flank variant. Its significance lies in enabling automated optical inspection of solder joints, which is mandatory for zero-defect automotive SMT processes and improves first-pass yield in high-volume portable electronics assembly.
What is the maximum power dissipation for SZNZ8F5V1SMX2WT5G on a standard FR-4 PCB?
SZNZ8F5V1SMX2WT5G has a maximum total device dissipation of 250 mW at TA = 25 °C on an FR-4 board with minimum pad (1 oz. Cu), derating linearly at 1.5 mW/°C above 25 °C. This value is specified in the Maximum Ratings table (Note 1) and governs thermal design for continuous DC regulation applications.
Does SZNZ8F5V1SMX2WT5G have RoHS and halogen-free compliance?
Yes, SZNZ8F5V1SMX2WT5G is Pb-free, halogen-free/BFR-free, and RoHS compliant, as stated in the Specification Features section of the datasheet. This compliance is inherent to the NZ8F Series and applies to all variants including the SZ-prefix automotive versions.
SZNZ8F5V1SMX2WT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- NZ8F
- Package/Case:
- 2-XDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 5.1 V
- Tolerance:
- ±2.35%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 80 Ohms
- Current - Reverse Leakage @ Vr:
- 2 µA @ 1.5 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)
SZNZ8F5V1SMX2WT5G FAQ
1.How can I place an order for SZNZ8F5V1SMX2WT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZ8F5V1SMX2WT5G 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 SZNZ8F5V1SMX2WT5G reliable?
The price and inventory of SZNZ8F5V1SMX2WT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ8F5V1SMX2WT5G is usually 5 days.
3.What payment methods are accepted for SZNZ8F5V1SMX2WT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ8F5V1SMX2WT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZ8F5V1SMX2WT5G?
SZNZ8F5V1SMX2WT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZ8F5V1SMX2WT5G 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 SZNZ8F5V1SMX2WT5G?
For technical support, including SZNZ8F5V1SMX2WT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ8F5V1SMX2WT5G requirements.
6.How does Aetrix verify that SZNZ8F5V1SMX2WT5G is sourced from the original manufacturer or authorized distributors?
All SZNZ8F5V1SMX2WT5G 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 SZNZ8F5V1SMX2WT5G meets industry standards.
7.What is the process for return or replacement of SZNZ8F5V1SMX2WT5G?
All SZNZ8F5V1SMX2WT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ8F5V1SMX2WT5G, 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 SZNZ8F5V1SMX2WT5G part is unused and in its original packaging.
Return procedure for SZNZ8F5V1SMX2WT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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