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onsemi NZ8F12VMX2WT5G
- Part No.:
- NZ8F12VMX2WT5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- 2-XDFN
- Datasheet:
-
NZ8F12VMX2WT5G.pdf
- Description:
- DIODE ZENER 12V 250MW 2-X2DFNW
- Quantity:
- Payment:
- Shipping:
Inventory:6,260
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Product details
Overview
NZ8F12VMX2WT5G from onsemi is a 250 mW surface-mount Zener diode in X2DFNW2 (0402) package, providing precise 11.4–12.6 V voltage regulation at 5 mA test current with 30 Ω dynamic impedance and 0.1 µA leakage at 9 V reverse bias. It serves as overvoltage clamp and reference in space-constrained power rails of automotive control units and portable electronics.
For engineers reviewing the NZ8F12VMX2WT5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5%), wettable flank compatibility with AOI, AEC-Q101 qualification status, thermal derating behavior on FR-4, and low-profile 0.40 mm height for high-density PCB layouts.
Technical Context
This device operates as a unidirectional Zener regulator with cathode-anode polarity, optimized for stable DC voltage reference and transient suppression in low-power circuits. Its 0402 wettable flank package enables reliable solder joint inspection and supports automated optical inspection without requiring additional process steps.
The NZ8F12VMX2WT5G exhibits a nominal temperature coefficient of +9 mV/°C across −55 °C to +150 °C, and maintains ≤30 Ω dynamic impedance at IZT = 5 mA - critical for maintaining regulation accuracy under varying load and temperature conditions in automotive and portable applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.4 V min to 12.6 V max at IZT = 5 mA - defines regulation window for precision clamping |
| Power Dissipation (PD) | 250 mW on FR-4 (1 oz Cu, minimum pad) - sets maximum continuous power handling |
| Zener Impedance (ZZT) | ≤30 Ω at IZT = 5 mA - ensures minimal output voltage shift under load variation |
| Reverse Leakage (IR) | ≤0.1 µA at VR = 9 V - guarantees low standby current in battery-sensitive designs |
| Capacitance (C) | 80 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering capability |
| Forward Voltage (VF) | ≤0.9 V at IF = 10 mA - defines conduction threshold in forward-biased protection paths |
| Junction Temp Range | −65 °C to +150 °C - supports operation in under-hood automotive environments |
Pinout & Package
The NZ8F12VMX2WT5G uses the X2DFNW2 (Case 711BG) 2-terminal surface-mount package measuring 1.00 × 0.60 × 0.37 mm with 0.65 mm pitch and wettable flank geometry. Body height is 0.40 mm for ultra-low profile mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Marked side) | Cathode | Connected to regulated output node; reverse-biased during Zener operation |
| 2 | Anode | Connected to ground or lower-potential rail; completes Zener conduction path |
Key Features
| Feature | Design Value |
|---|---|
| Wettable Flank Package | Enables full-surface solder joint inspection via AOI without X-ray, improving manufacturing yield |
| AEC-Q101 Qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Pb-Free / RoHS Compliant | Meets global environmental compliance requirements without compromising thermal or electrical performance |
| Low Profile (0.40 mm) | Reduces board stack height and mechanical interference in slim portable enclosures |
| Tight Thermal Resistance | RJA = 415 °C/W on minimal FR-4 pad - enables predictable thermal design in compact layouts |
Applications
| Automotive Engine Control Unit (ECU) | Smartphone Power Rail Protection |
|---|---|
Use Scenario: Clamping 12 V supply rail against load dump transients in engine control modules. IC Role / Device Role / Timing Role: Unidirectional Zener clamp protecting microcontroller I/O and sensor interface circuitry. Use Value: Withstands 40 W non-repetitive peak reverse power and operates reliably from −40 °C to +125 °C ambient. |
Use Scenario: Providing stable 12 V reference for USB-C PD negotiation circuitry in mobile devices. IC Role / Device Role / Timing Role: Precision voltage reference element in feedback loop of buck-boost converters. Use Value: ±5% Zener tolerance and <30 Ω impedance ensure <±50 mV regulation error across operating temperature range. |
| Industrial Sensor Signal Conditioning | Wearable Health Monitor Reference |
Use Scenario: Stabilizing excitation voltage for bridge-based pressure sensors in factory automation systems. IC Role / Device Role / Timing Role: Low-drift DC reference source with minimal self-heating in analog front-end stages. Use Value: +9 mV/°C tempco and 0.1 µA leakage preserve measurement accuracy in battery-powered wireless nodes. |
Use Scenario: Regulating bias voltage for optical heart-rate sensor LEDs in compact wearables. IC Role / Device Role / Timing Role: Compact voltage clamp limiting LED driver supply to safe operating range. Use Value: 0.40 mm height and 0402 footprint enable integration into sub-10 mm² wearable PCBs without sacrificing regulation fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX384-B12,115 | 12 V ±5%, SOD-323 package (1.7 × 1.3 × 0.9 mm), 300 mW PD, RJA = 450 °C/W | Larger footprint and height; lacks wettable flank and AEC-Q101 qualification | Preferred where higher power margin is needed and AOI compatibility is not required |
| MMSZ4687T1G | 12 V ±5%, SOD-123 package (3.7 × 1.6 × 1.1 mm), 500 mW PD, RJA = 300 °C/W | 3× larger area; higher power but incompatible with ultra-dense 0402 layouts | Chosen when thermal dissipation >250 mW is required and board space permits larger package |
Compared with BZX384-B12,115 and MMSZ4687T1G, the NZ8F12VMX2WT5G delivers identical voltage regulation performance in a significantly smaller, AOI-compatible, and automotive-qualified package - making it optimal for next-generation compact and mission-critical designs where size, inspection reliability, and qualification rigor are prioritized.
Availability
NZ8F12VMX2WT5G is available at Aetrix Electronics and suitable for automotive control units, smartphone power management, and industrial sensor interfaces requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for NZ8F12VMX2WT5G 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 voltage regulation and protection in automotive and portable electronics where reliability, miniaturization, and manufacturability are critical.
FAQ
What is the Zener voltage tolerance of NZ8F12VMX2WT5G?
The NZ8F12VMX2WT5G has a Zener voltage range of 11.4 V to 12.6 V at IZT = 5 mA, corresponding to ±5% tolerance around the nominal 12 V rating. This tolerance is confirmed in the Electrical Characteristics table on page 2 of the official onsemi datasheet, and applies strictly to the NZ8FxxxMX2WT5G standard series - not the tighter-tolerance SMX2W variants.
Is NZ8F12VMX2WT5G qualified for automotive use?
Yes, NZ8F12VMX2WT5G is AEC-Q101 qualified and PPAP capable when ordered with the SZ prefix (e.g., SZNZ8F12VMX2WT5G). The base part NZ8F12VMX2WT5G shares identical electrical and mechanical specifications but is intended for industrial and consumer applications unless explicitly ordered with the SZ prefix per onsemi's ordering nomenclature.
What is the thermal resistance of NZ8F12VMX2WT5G on a standard PCB?
The junction-to-ambient thermal resistance (RJA) of NZ8F12VMX2WT5G is 415 °C/W when mounted on an FR-4 board with minimum pad (1 oz Cu), as specified in Note 1 of the Maximum Ratings table. Derating is 1.5 mW/°C above 25 °C ambient, limiting usable power to ~215 mW at 85 °C ambient.
Does NZ8F12VMX2WT5G support automated optical inspection (AOI)?
Yes, NZ8F12VMX2WT5G features a wettable flank package (X2DFNW2) designed specifically for high-contrast solder joint imaging during AOI. The exposed metal sidewalls allow reliable detection of solder fillet quality without requiring X-ray inspection - a key advantage over conventional 0402 packages.
What is the maximum non-repetitive peak reverse power for NZ8F12VMX2WT5G?
The maximum non-repetitive peak reverse power (PZSM) for NZ8F12VMX2WT5G is 40 W, tested at TA = 25 °C with pulse width tp = 100 µs (not seconds, per Note 3 correction in datasheet). This rating supports transient surge suppression in automotive load-dump scenarios when used with appropriate series impedance.
NZ8F12VMX2WT5G 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 2-X2DFNW (1x0.6)
NZ8F12VMX2WT5G FAQ
1.How can I place an order for NZ8F12VMX2WT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for NZ8F12VMX2WT5G 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 NZ8F12VMX2WT5G reliable?
The price and inventory of NZ8F12VMX2WT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NZ8F12VMX2WT5G is usually 5 days.
3.What payment methods are accepted for NZ8F12VMX2WT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NZ8F12VMX2WT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NZ8F12VMX2WT5G?
NZ8F12VMX2WT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NZ8F12VMX2WT5G 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 NZ8F12VMX2WT5G?
For technical support, including NZ8F12VMX2WT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NZ8F12VMX2WT5G requirements.
6.How does Aetrix verify that NZ8F12VMX2WT5G is sourced from the original manufacturer or authorized distributors?
All NZ8F12VMX2WT5G 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 NZ8F12VMX2WT5G meets industry standards.
7.What is the process for return or replacement of NZ8F12VMX2WT5G?
All NZ8F12VMX2WT5G units undergo pre-shipment inspection (PSI). If there is an issue with NZ8F12VMX2WT5G, 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 NZ8F12VMX2WT5G part is unused and in its original packaging.
Return procedure for NZ8F12VMX2WT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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