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onsemi SZNZ8P24VMX2WT5G
- Part No.:
- SZNZ8P24VMX2WT5G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 2-XDFN
- Datasheet:
-
SZNZ8P24VMX2WT5G.pdf
- Description:
- ZENER PROTECTION DIODE 24V PROTE
- Quantity:
- Payment:
- Shipping:
Inventory:6,556
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Product details
Overview
SZNZ8P24VMX2WT5G from onsemi is a single-channel, unidirectional Zener protection diode in an X2DFNW2 1.0 × 0.6 mm package, designed for ESD and transient overvoltage protection of voltage-sensitive circuits. It features a 24 V working peak reverse voltage (VRWM), 27.7 V max breakdown voltage (VBR) at 5 mA, 35 V clamping voltage at 1.0 A (8/20 µs), <100 nA reverse leakage at 24 V, and 22 pF junction capacitance at 0 V - deployed in automotive ECUs and IVN systems.
For engineers reviewing the SZNZ8P24VMX2WT5G datasheet, pinout, applications, or equivalent options, key selection criteria include IEC 61000-4-2 ±30 kV contact/air ESD rating, AEC-Q101 qualification, wettable flank package for AOI, and precise clamping behavior under 1.0–4.5 A pulse currents.
Technical Context
This device operates as a unidirectional TVS diode, leveraging Zener avalanche breakdown to clamp transients above VRWM = 24 V. Its low 22 pF junction capacitance minimizes signal distortion in high-speed data lines, while the ultra-compact X2DFNW2 footprint supports dense PCB layouts in space-constrained automotive modules.
The SZNZ8P24VMX2WT5G meets ISO 10605 (±30 kV, 330 pF/330 Ω and 150 pF/2 kΩ) and IEC 61000-4-2 (±30 kV contact/air) standards. Its AEC-Q101 qualification confirms suitability for automotive electronics with operating junction temperatures from −55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 24 V - DC operating voltage threshold; must be ≥ circuit's continuous peak voltage to avoid leakage during normal operation |
| VBR (min/typ/max) | 26.3 / 27 / 27.7 V @ 5 mA - defines reliable turn-on range for transient suppression |
| VC @ IPP = 1.0 A | 35 V - clamped voltage seen by protected IC during 8/20 µs surge; ensures downstream components stay below safe voltage limits |
| IR @ VRWM | <100 nA - negligible standby current draw, critical for low-power automotive sensors and always-on nodes |
| CJ @ 0 V, 1 MHz | 22 pF - enables use on USB 2.0, CAN FD, LIN, and other sub-100 Mbps interfaces without signal integrity degradation |
| ESD Rating | ±30 kV (IEC 61000-4-2 contact/air) - exceeds automotive ESD immunity requirements per ISO 10605 |
| Package | X2DFNW2 (1.0 × 0.6 mm, 0.65 mm pitch) - wettable flank design supports automated optical inspection and robust solder joint quality verification |
Pinout & Package
X2DFNW2 is a 2-terminal, surface-mount, ultra-compact leadless package with wettable flanks. The cathode (pin 1) and anode (pin 2) are located on opposite ends of the rectangular body; polarity is marked by a cathode band on the top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Transient Current Sink | Connected to protected line; conducts surge current to ground when voltage exceeds VRWM |
| 2 (Anode) | Reference / Ground Return | Typically tied to system ground; completes clamping path during ESD event |
Key Features
| Feature | Design Value |
|---|---|
| Precise Clamping Voltage | 35 V @ 1.0 A (8/20 µs) ensures predictable overvoltage limiting without undershoot or overshoot in sensitive analog/digital inputs |
| AEC-Q101 Qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress - required for ECU and IVN deployment |
| Wettable Flank Package | X2DFNW2 geometry enables 100% automated optical inspection of solder fillets, reducing field failure risk in high-volume automotive manufacturing |
| Low Junction Capacitance | 22 pF at 0 V allows integration on CAN, LIN, and sensor interface lines without degrading rise/fall times or causing bit errors |
Applications
| Automotive Engine Control Unit (ECU) | In-Vehicle Networking (IVN) |
|---|---|
Use Scenario: Protecting microcontroller GPIOs, sensor inputs, and LIN bus transceivers from load dump and ESD events during vehicle assembly and service. IC Role / Device Role: Unidirectional transient voltage suppressor placed between signal line and chassis ground. Use Value: Maintains 24 V VRWM compatibility with 12 V/24 V battery systems while delivering ±30 kV ESD immunity per IEC 61000-4-2. | Use Scenario: Shielding CAN FD and LIN physical layer interfaces against coupling-induced transients in wiring harnesses and connector mating cycles. IC Role / Device Role: Line-side ESD clamp on differential or single-ended data lines, minimizing capacitive loading. Use Value: 22 pF junction capacitance prevents signal integrity loss up to 5 Mbps, supporting next-gen IVN bandwidth requirements. |
| Voltage-Sensitive Sensor Circuits | Infotainment System Front-End Interfaces |
Use Scenario: Safeguarding precision analog outputs of pressure, temperature, and position sensors exposed to board-level ESD during handling and testing. IC Role / Device Role: Low-leakage (≤100 nA) clamping diode placed directly at sensor output pin. Use Value: Prevents measurement offset drift caused by IR-induced voltage drop across series protection resistors. | Use Scenario: Protecting USB 2.0, HDMI CEC, and audio codec I/O pins in head units and display modules from user-port ESD. IC Role / Device Role: High-speed ESD suppressor with minimal parasitic capacitance on high-frequency signal paths. Use Value: 35 V clamping at 1.0 A ensures connected peripherals remain within absolute maximum ratings during ±8 kV contact discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD9X3.3SCT5G | Lower VRWM (3.3 V), higher CJ (65 pF), same X2DFNW2 package | Targeted for 3.3 V logic rails and USB data lines - not suitable for 24 V systems | Select only for sub-5 V interfaces requiring tighter clamping; incompatible with SZNZ8P24VMX2WT5G's 24 V operating range |
| SMF24A | Higher power rating (200 W vs. 60 W), larger SOD-123FL package (3.7 × 1.7 mm), no wettable flanks | Used in industrial power supply inputs and non-AEC-Q101 designs where board space and AOI are less critical | Choose when surge energy exceeds SZNZ8P24VMX2WT5G's 60 W rating; requires PCB layout change due to size and pitch mismatch |
Compared with ESD9X3.3SCT5G and SMF24A, the SZNZ8P24VMX2WT5G uniquely balances 24 V system compatibility, automotive qualification, ultra-small footprint, and AOI-ready packaging - making it optimal for space-constrained, safety-critical automotive signal protection where both voltage rating and manufacturability matter.
Availability
SZNZ8P24VMX2WT5G is available at Aetrix Electronics and suitable for automotive ECUs, in-vehicle networking (IVN), and voltage-sensitive sensor circuits requiring stable component supply, full traceability, and long-term lifecycle support.
Supply support for SZNZ8P24VMX2WT5G 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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, medical, and IoT applications.
The NZ8P series is part of onsemi's automotive-qualified transient voltage suppression portfolio, engineered specifically for ESD and surge protection in harsh-temperature, high-reliability vehicle subsystems.
FAQ
What is the primary function of the SZNZ8P24VMX2WT5G?
The SZNZ8P24VMX2WT5G functions as a unidirectional Zener-based transient voltage suppressor. It clamps voltage spikes above its 24 V working peak reverse voltage to protect downstream ICs. Its design targets ESD events per IEC 61000-4-2 and ISO 10605, with precise clamping at 35 V under 1.0 A surge current. This makes the SZNZ8P24VMX2WT5G ideal for safeguarding automotive sensor interfaces and IVN data lines.
Is the SZNZ8P24VMX2WT5G qualified for automotive use?
Yes, the SZNZ8P24VMX2WT5G carries AEC-Q101 qualification and PPAP capability, confirming its suitability for automotive electronics. It operates across −55 °C to +150 °C junction temperature and meets stringent reliability tests including temperature cycling and HTRB. The "SZ" prefix denotes compliance with automotive-specific site and control change requirements - a key distinction from commercial-grade variants like NZ8P24VMX2WT5G.
What does the "X2DFNW2" package signify for the SZNZ8P24VMX2WT5G?
The X2DFNW2 package is a 2-terminal, leadless, ultra-compact footprint measuring 1.0 × 0.6 mm with 0.65 mm pitch and wettable flanks. For the SZNZ8P24VMX2WT5G, this enables high-density placement on automotive PCBs and supports automated optical inspection of solder joints - critical for zero-defect manufacturing in Tier 1 supply chains.
How does the SZNZ8P24VMX2WT5G compare to standard TVS diodes in terms of capacitance?
The SZNZ8P24VMX2WT5G exhibits 22 pF junction capacitance at 0 V and 1 MHz - significantly lower than many general-purpose TVS diodes (often >100 pF). This low value preserves signal integrity on high-speed lines such as CAN FD and LIN. When selecting alternatives, engineers must verify capacitance impact on rise time and bit error rate - a key advantage of the SZNZ8P24VMX2WT5G in data-intensive automotive applications.
Can the SZNZ8P24VMX2WT5G replace older through-hole Zener diodes in existing designs?
No direct replacement is possible without PCB redesign. The SZNZ8P24VMX2WT5G uses a 1.0 × 0.6 mm X2DFNW2 surface-mount package, whereas legacy through-hole Zeners require axial or DO-41 footprints. Migration demands layout revision, requalification per AEC-Q200, and validation of clamping performance under actual system surge conditions - though the SZNZ8P24VMX2WT5G offers superior ESD immunity and space savings over those older solutions.
SZNZ8P24VMX2WT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 2-XDFN
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 26.3V
- Voltage - Clamping (Max) @ Ipp:
- 44V
- Current - Peak Pulse (10/1000µs):
- 1A
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- Automotive
- Capacitance @ Frequency:
- 22pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 2-X2DFNW (1x0.6)
SZNZ8P24VMX2WT5G FAQ
1.How can I place an order for SZNZ8P24VMX2WT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZ8P24VMX2WT5G 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 SZNZ8P24VMX2WT5G reliable?
The price and inventory of SZNZ8P24VMX2WT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ8P24VMX2WT5G is usually 5 days.
3.What payment methods are accepted for SZNZ8P24VMX2WT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ8P24VMX2WT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZ8P24VMX2WT5G?
SZNZ8P24VMX2WT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZ8P24VMX2WT5G 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 SZNZ8P24VMX2WT5G?
For technical support, including SZNZ8P24VMX2WT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ8P24VMX2WT5G requirements.
6.How does Aetrix verify that SZNZ8P24VMX2WT5G is sourced from the original manufacturer or authorized distributors?
All SZNZ8P24VMX2WT5G 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 SZNZ8P24VMX2WT5G meets industry standards.
7.What is the process for return or replacement of SZNZ8P24VMX2WT5G?
All SZNZ8P24VMX2WT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ8P24VMX2WT5G, 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 SZNZ8P24VMX2WT5G part is unused and in its original packaging.
Return procedure for SZNZ8P24VMX2WT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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