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onsemi SZNZ8F33VMX2WT5G
- Part No.:
- SZNZ8F33VMX2WT5G
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- 2-XDFN
- Datasheet:
-
SZNZ8F33VMX2WT5G.pdf
- Description:
- DIODE ZENER 33V 250MW 2-X2DFNW
- Quantity:
- Payment:
- Shipping:
Inventory:2,137
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Product details
Overview
SZNZ8F33VMX2WT5G from onsemi is an AEC-Q101-qualified Zener diode with nominal Zener voltage 33 V (min 31.35 V, max 34.65 V), 250 mW power dissipation on FR-4 board, 95 Ω dynamic impedance at 5 mA test current, and 0.1 µA reverse leakage at 26 V, designed for precision voltage regulation in space-constrained automotive control units and portable electronics.
For engineers reviewing the SZNZ8F33VMX2WT5G datasheet, pinout, applications, or equivalent options, key selection criteria include Zener voltage tolerance (±5% standard), wettable flank X2DFNW2 package compatibility with AOI, thermal resistance (415 °C/W), and AEC-Q101 qualification for automotive-grade reliability.
Technical Context
This device operates as a unidirectional voltage reference using avalanche breakdown in silicon PN junction, with specified Zener voltage measured at IZT = 5 mA and temperature coefficient optimized for stability across −65 °C to +150 °C junction range. Its low 0.40 mm body height and 0.65 mm pitch support high-density PCB layouts.
The X2DFNW2 package features wettable flanks enabling reliable solder joint inspection via automated optical inspection (AOI), and the SZ prefix confirms compliance with AEC-Q101 stress testing and PPAP documentation requirements for automotive applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 31.35 V to 34.65 V at IZT = 5 mA - defines regulated output voltage window under nominal bias |
| Power Dissipation (PD) | 250 mW on FR-4 (1 oz Cu, min pad) - sets maximum continuous power handling without derating |
| Zener Impedance (ZZT) | 95 Ω at IZT = 5 mA - determines voltage regulation stiffness against load current variation |
| Reverse Leakage (IR) | 0.1 µA at VR = 26 V - ensures minimal standby current in overvoltage clamp circuits |
| Capacitance (C) | 45 pF at VR = 0 V, f = 1 MHz - impacts high-frequency noise filtering and transient response |
| Junction Temp Range | −65 °C to +150 °C - supports operation in under-hood automotive environments |
| Package | X2DFNW2 (Case 711BG), 1.00 × 0.60 × 0.37 mm - enables 0402-compatible placement with AOI-ready side walls |
Pinout & Package
X2DFNW2 is a 2-terminal surface-mount package with exposed cathode and anode pads on the bottom face; no top-side terminals. The package footprint conforms to JEDEC-standardized 0402 inch size (1.00 mm × 0.60 mm) with 0.65 mm pitch and wettable flank geometry for solder fillet inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side terminal for reverse-biased operation | Connected to regulated rail or voltage node requiring clamping; polarity critical for Zener function |
| 2 (Anode) | Low-side terminal referenced to ground or return path | Provides current return path during breakdown; must be held at lower potential than cathode |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive under-hood use including temperature cycling, HTRB, and ESD testing per AEC standard |
| Wettable flank geometry | Enables 100% automated optical inspection of solder joints without x-ray, reducing post-reflow defect escape |
| Pb-Free, Halogen-Free | Complies with RoHS Directive 2011/65/EU and J-STD-609 Category 1 moisture sensitivity |
| Low profile (0.40 mm height) | Permits stacking beneath connectors or shields in ultra-thin handheld and ADAS modules |
| Stable 33 V regulation | Maintains ±5% voltage accuracy across 5 mA to 20 mA operating range and full temperature span |
Applications
| Automotive Engine Control Unit (ECU) | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Clamping 33 V supply rail transients induced by load dump or alternator ripple in engine management systems. IC Role / Device Role / Timing Role: Voltage regulator and overvoltage protector placed directly at microcontroller power input. Use Value: Prevents MCU brown-out or latch-up during ISO 7637-2 Pulse 5a events while maintaining <0.1 µA quiescent leakage. | Use Scenario: Providing stable 33 V reference for 24-bit sigma-delta ADCs in precision pressure transducers. IC Role / Device Role / Timing Role: Precision shunt reference establishing analog front-end bias point. Use Value: Enables <±0.5% full-scale measurement accuracy over −40 °C to +125 °C due to tight 5 mA Zener current specification. |
| Automotive Body Control Module (BCM) | Portable Medical Diagnostic Device |
Use Scenario: Regulating auxiliary 33 V rail powering LIN bus transceivers and LED drivers in door module assemblies. IC Role / Device Role / Timing Role: Primary voltage stabilization element in distributed power architecture. Use Value: Delivers consistent regulation despite 100 kHz switching noise from adjacent DC-DC converters, aided by 45 pF low capacitance. | Use Scenario: Protecting battery-charged 33 V intermediate rail in handheld ultrasound probe electronics from ESD-induced surges. IC Role / Device Role / Timing Role: Transient voltage suppressor integrated into power entry circuitry. Use Value: Absorbs >40 W non-repetitive peak power (per PZSM rating) without degradation, ensuring patient safety compliance. |
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 |
|---|---|---|---|
| BZX84-C33LT1G | 33 V ±5%, SOT-23 package (1.3 × 1.3 × 0.95 mm), 350 mW PD, 80 Ω ZZT | Larger footprint, higher power, but lacks AEC-Q101 qualification and wettable flanks | Select when higher power margin is needed and AOI is not required |
| MMBZ5256BLT1G | 33 V ±5%, SOT-23, 350 mW PD, 100 Ω ZZT, no AEC-Q101 | Same package, lower cost, but not qualified for automotive use or PPAP-supported | Select for industrial or consumer designs where automotive certification is unnecessary |
Compared with BZX84-C33LT1G and MMBZ5256BLT1G, SZNZ8F33VMX2WT5G offers smaller 0402 footprint, AEC-Q101 qualification, and wettable flank AOI capability-critical for automotive production traceability-but trades off 100 mW power headroom for miniaturization.
Availability
SZNZ8F33VMX2WT5G is available at Aetrix Electronics and suitable for automotive engine control units, industrial sensor signal conditioning circuits, and portable medical diagnostic devices requiring stable component supply with full AEC-Q101 compliance and traceable sourcing.
Supply support for SZNZ8F33VMX2WT5G 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications, with manufacturing sites across Asia, North America, and Europe.
The NZ8F Series is part of onsemi's precision discrete portfolio, engineered specifically for space-constrained voltage regulation and overvoltage protection in automotive electronics and portable equipment where AEC-Q101 reliability and AOI-compatible packaging are mandatory.
FAQ
What is the Zener voltage tolerance of SZNZ8F33VMX2WT5G?
SZNZ8F33VMX2WT5G has a nominal Zener voltage of 33 V with a tolerance of ±5%, resulting in a guaranteed range of 31.35 V to 34.65 V at IZT = 5 mA and TA = 25 °C. This standard tolerance series is distinct from the tighter ±1.5% S-series variants like SZNZ8F33VSMX2WT5G.
Is SZNZ8F33VMX2WT5G qualified for automotive applications?
Yes, SZNZ8F33VMX2WT5G is AEC-Q101 qualified and PPAP capable, as confirmed by its SZ prefix and explicit listing in the onsemi NZ8F Series datasheet. It undergoes stress testing for temperature cycling, high-temperature reverse bias, and ESD per AEC-Q101 Rev D requirements.
What package type does SZNZ8F33VMX2WT5G use and why is it significant?
SZNZ8F33VMX2WT5G uses the X2DFNW2 package (Case 711BG), a 0402-inch wettable flank variant measuring 1.00 × 0.60 × 0.37 mm. Its significance lies in enabling automated optical inspection of solder fillets-critical for zero-defect automotive manufacturing-and supporting ultra-dense PCB layouts.
What is the maximum power dissipation for SZNZ8F33VMX2WT5G on a standard FR-4 board?
SZNZ8F33VMX2WT5G has a maximum power dissipation of 250 mW on FR-4 board with minimum pad layout (1 oz Cu), derating linearly at 1.5 mW/°C above 25 °C ambient. With enhanced copper area (150 mm²), it supports up to 500 mW, but the 250 mW rating applies to typical 0402 land patterns.
Does SZNZ8F33VMX2WT5G have RoHS and halogen-free compliance?
Yes, SZNZ8F33VMX2WT5G is Pb-Free, Halogen-Free/BFR-Free, and fully RoHS compliant per Directive 2011/65/EU. This is explicitly stated in the "Specification Features" section of the onsemi datasheet and verified through onsemi's material declarations.
SZNZ8F33VMX2WT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- NZ8F
- Package/Case:
- 2-XDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±5%
- Power - Max:
- 250 mW
- Impedance (Max) (Zzt):
- 95 Ohms
- Current - Reverse Leakage @ Vr:
- 100 nA @ 26 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)
SZNZ8F33VMX2WT5G FAQ
1.How can I place an order for SZNZ8F33VMX2WT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZ8F33VMX2WT5G 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 SZNZ8F33VMX2WT5G reliable?
The price and inventory of SZNZ8F33VMX2WT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ8F33VMX2WT5G is usually 5 days.
3.What payment methods are accepted for SZNZ8F33VMX2WT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ8F33VMX2WT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZ8F33VMX2WT5G?
SZNZ8F33VMX2WT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZ8F33VMX2WT5G 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 SZNZ8F33VMX2WT5G?
For technical support, including SZNZ8F33VMX2WT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ8F33VMX2WT5G requirements.
6.How does Aetrix verify that SZNZ8F33VMX2WT5G is sourced from the original manufacturer or authorized distributors?
All SZNZ8F33VMX2WT5G 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 SZNZ8F33VMX2WT5G meets industry standards.
7.What is the process for return or replacement of SZNZ8F33VMX2WT5G?
All SZNZ8F33VMX2WT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ8F33VMX2WT5G, 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 SZNZ8F33VMX2WT5G part is unused and in its original packaging.
Return procedure for SZNZ8F33VMX2WT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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