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onsemi SZNZ8F12VMX2WT5G
- Part No.:
- SZNZ8F12VMX2WT5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- 2-XDFN
- Datasheet:
-
SZNZ8F12VMX2WT5G.pdf
- Description:
- DIODE ZENER 12V 250MW 2-X2DFNW
- Quantity:
- Payment:
- Shipping:
Inventory:7,815
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Product details
Overview
SZNZ8F12VMX2WT5G from onsemi is an AEC-Q101 qualified automotive-grade Zener diode in X2DFNW2 (0402) wettable flank package, delivering 11.4–12.6 V reverse breakdown voltage at 5 mA test current, 30 Ω dynamic impedance, and 0.1 µA leakage at 9 V reverse bias - designed for precision voltage clamping and ESD protection in space-constrained automotive control units.
For engineers reviewing the SZNZ8F12VMX2WT5G datasheet, pinout, applications, or equivalent options, key selection criteria include its 250 mW power rating on FR-4 (1 oz Cu, minimum pad), ±5% tolerance, −65 °C to +150 °C operating range, and AEC-Q101 qualification for under-hood electronics.
Technical Context
This device operates as a unidirectional voltage regulator with sharp Zener knee characteristics, optimized for low-leakage clamping in automotive sensor interfaces and microcontroller I/O protection circuits. Its thermal resistance of 415 °C/W (minimum pad layout) enables stable regulation under transient overvoltage conditions up to 40 W non-repetitive peak reverse power.
The X2DFNW2 package features wettable flanks for reliable automated optical inspection (AOI) and solder joint quality verification - critical for high-reliability automotive PCB assembly. The SZ prefix confirms full PPAP capability and site-specific process controls required for Tier-1 automotive supply chains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.4–12.6 V @ IZT = 5 mA - defines precise clamping threshold for 12 V rail protection |
| Power Dissipation (PD) | 250 mW @ TA = 25 °C (min pad) - supports continuous regulation in compact layouts without forced cooling |
| Zener Impedance (ZZT) | 30 Ω max @ IZT = 5 mA - ensures minimal voltage shift under load variation in feedback paths |
| Leakage Current (IR) | 0.1 µA max @ VR = 9 V - prevents signal distortion in high-impedance sensor inputs |
| Capacitance (C) | 80 pF @ VR = 0 V, f = 1 MHz - compatible with <10 MHz analog signal lines without bandwidth degradation |
| Junction Temp Range | −65 °C to +150 °C - validated for engine bay and transmission control module environments |
| AEC-Q101 Qualified | Yes - meets stress testing requirements for automotive electronic components including temperature cycling and HTRB |
Pinout & Package
X2DFNW2 surface-mount package (Case 711BG): 1.00 mm × 0.60 mm × 0.37 mm body, 0.65 mm pitch, wettable flank terminations. Low profile (0.40 mm height) enables co-placement with 0201 passives.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener voltage reference terminal | Connected to regulated node; polarity must be observed to avoid forward conduction during clamping |
| 2 (Anode) | Ground/reference return path | Must be tied to stable low-impedance ground plane to maintain specified VZ accuracy and thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Wettable flank terminations | Enables 100% AOI coverage of solder fillet geometry - eliminates manual visual inspection in automotive SMT lines |
| AEC-Q101 qualification | Validated for automotive use with PPAP documentation support - satisfies OEM Tier-1 sourcing requirements |
| 0402 footprint compatibility | Matches industry-standard 0402 land pattern - allows drop-in replacement without PCB redesign |
| Pb-Free / RoHS compliant | Halogen-free, BFR-free construction - meets EU ELV and China RoHS material declarations |
| Low leakage at elevated temperature | IR remains ≤0.1 µA up to 125 °C - maintains signal integrity in hot under-hood locations |
Applications
| Automotive Engine Control Unit (ECU) | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Clamping CAN transceiver I/O pins against load dump transients (ISO 7637-2 Pulse 5a). IC Role / Device Role / Timing Role: Unidirectional voltage clamp protecting PHY-level interface circuitry from >40 V surges. Use Value: Maintains 12 V rail integrity with <30 Ω dynamic impedance, preventing false CAN dominant states during transient events. |
Use Scenario: Regulating reference voltage for LIN bus transceiver biasing in door module controllers. IC Role / Device Role / Timing Role: Precision shunt regulator establishing stable 12 V reference for analog comparator thresholds. Use Value: Delivers ±5% VZ tolerance and <0.1 µA leakage at 9 V, ensuring consistent LIN wake-up detection across temperature. |
| Automotive ADAS Camera Module | Automotive HVAC Control Panel |
Use Scenario: Protecting image sensor I²C lines from ESD events per ISO 10605 (±15 kV contact discharge). IC Role / Device Role / Timing Role: Fast-response clamping diode placed directly at connector interface to divert ESD current. Use Value: 80 pF capacitance avoids signal rise-time degradation on 400 kHz I²C clock lines while providing sub-ns response. |
Use Scenario: Stabilizing 5 V supply rail for touch controller ASIC in high-vibration dashboard assemblies. IC Role / Device Role / Timing Role: Secondary shunt regulator compensating for LDO dropout during cold-crank conditions. Use Value: Operates reliably from −40 °C to +105 °C ambient with no derating loss - sustains display functionality during engine start. |
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 |
|---|---|---|---|
| 1SMB5917BT3G | Higher power (3 W), DO-214AA package (3.5 mm × 1.6 mm), 12 V ±5%, 10 Ω ZZT | Requires larger PCB area; suited for industrial power supplies, not space-constrained automotive modules | Select when higher surge handling (400 W PPPM) is needed and 0402 footprint is not mandatory |
| BZX84-C12LT1G | SOT-23 package (3.0 mm × 1.4 mm), 12 V ±5%, 30 Ω ZZT, 500 mW PD, no AEC-Q101 | Larger footprint, no automotive qualification - limited to consumer or industrial portable devices | Choose for cost-sensitive non-automotive designs where PPAP and wettable flanks are unnecessary |
Compared with SZNZ8F12VMX2WT5G, the 1SMB5917BT3G offers superior surge robustness but lacks AOI-compatible packaging and automotive qualification, while the BZX84-C12LT1G provides identical electrical specs in a non-automotive-qualified SOT-23 - making SZNZ8F12VMX2WT5G the only option meeting AEC-Q101, 0402 size, and wettable flank requirements simultaneously.
Availability
SZNZ8F12VMX2WT5G is available at Aetrix Electronics and suitable for automotive engine control units, body control modules, and ADAS camera systems requiring stable component supply with full traceability and lifecycle management.
Supply support for SZNZ8F12VMX2WT5G 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 focused on energy-efficient electronics, serving automotive, industrial, cloud, and IoT markets with differentiated silicon solutions.
The NZ8F Series is part of onsemi's automotive-qualified discrete portfolio, engineered specifically for voltage regulation and transient suppression in space-constrained, high-reliability vehicle subsystems.
FAQ
What is the Zener voltage tolerance of SZNZ8F12VMX2WT5G?
SZNZ8F12VMX2WT5G has a nominal Zener voltage of 12 V with a tolerance of ±5%, specified as 11.4 V minimum to 12.6 V maximum at IZT = 5 mA. This standard tolerance series (denoted by "M" in the part number) is validated per onsemi's NZ8F datasheet Rev. 4 and applies across the full operating temperature range of −65 °C to +150 °C.
Is SZNZ8F12VMX2WT5G qualified for automotive applications?
Yes, SZNZ8F12VMX2WT5G is AEC-Q101 qualified and PPAP capable, as confirmed by the "SZ" prefix and explicit statement in the onsemi datasheet. It undergoes accelerated stress testing including temperature cycling, high-temperature reverse bias (HTRB), and mechanical shock - meeting OEM requirements for engine control, body electronics, and ADAS subsystems.
What is the maximum power dissipation for SZNZ8F12VMX2WT5G on a standard FR-4 board?
SZNZ8F12VMX2WT5G delivers 250 mW total device dissipation on an FR-4 board with minimum pad layout (1 oz Cu), derating linearly at 1.5 mW/°C above 25 °C ambient. With enhanced layout (150 mm² copper area), it supports 500 mW at 25 °C - both ratings are documented in the Maximum Ratings table of the official datasheet.
Does SZNZ8F12VMX2WT5G have wettable flank terminals?
Yes, SZNZ8F12VMX2WT5G uses the X2DFNW2 package with wettable flank terminations, enabling full automated optical inspection (AOI) of solder fillets. This feature is explicitly called out in the datasheet's Specification Features section and verified in the mechanical drawing (Case 711BG, Issue F).
What is the leakage current specification for SZNZ8F12VMX2WT5G at 9 V reverse bias?
SZNZ8F12VMX2WT5G specifies a maximum reverse leakage current (IR) of 0.1 µA at VR = 9 V and TA = 25 °C, as listed in the Electrical Characteristics table on page 2 of the datasheet. This low leakage ensures minimal loading on high-impedance sensor nodes and reference circuits.
SZNZ8F12VMX2WT5G 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:
- ±5%
- 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)
SZNZ8F12VMX2WT5G FAQ
1.How can I place an order for SZNZ8F12VMX2WT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZ8F12VMX2WT5G 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 SZNZ8F12VMX2WT5G reliable?
The price and inventory of SZNZ8F12VMX2WT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ8F12VMX2WT5G is usually 5 days.
3.What payment methods are accepted for SZNZ8F12VMX2WT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ8F12VMX2WT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZ8F12VMX2WT5G?
SZNZ8F12VMX2WT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZ8F12VMX2WT5G 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 SZNZ8F12VMX2WT5G?
For technical support, including SZNZ8F12VMX2WT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ8F12VMX2WT5G requirements.
6.How does Aetrix verify that SZNZ8F12VMX2WT5G is sourced from the original manufacturer or authorized distributors?
All SZNZ8F12VMX2WT5G 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 SZNZ8F12VMX2WT5G meets industry standards.
7.What is the process for return or replacement of SZNZ8F12VMX2WT5G?
All SZNZ8F12VMX2WT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ8F12VMX2WT5G, 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 SZNZ8F12VMX2WT5G part is unused and in its original packaging.
Return procedure for SZNZ8F12VMX2WT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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