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onsemi SZNZ8DH33VMXWT5G
- Part No.:
- SZNZ8DH33VMXWT5G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
SZNZ8DH33VMXWT5G.pdf
- Description:
- DUAL DIODE ZENER PROTECTION 33V,
- Quantity:
- Payment:
- Shipping:
Inventory:3,104
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Product details
Overview
SZNZ8DH33VMXWT5G from onsemi is a bidirectional Zener protection diode designed for ESD and transient overvoltage suppression in voltage-sensitive signal lines. It features a 33 V working peak reverse voltage (VRWM), 37.3 V typical clamping voltage at 1.0 A, ±30 kV IEC 61000-4-2 contact ESD rating, and ultra-compact XDFNW2 (1.0 × 0.6 mm) package - ideal for automotive ECUs and IVN interfaces.
For engineers reviewing the SZNZ8DH33VMXWT5G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping performance under 1.0 A pulse, low 10 pF capacitance at 0 V bias, AEC-Q101 qualification, wettable flank package for AOI, and compatibility with high-temperature (175 °C TJ(MAX)) mission-critical systems.
Technical Context
The SZNZ8DH33VMXWT5G implements a single-channel, bidirectional Zener clamp topology optimized for fast transient response to ESD and ISO 10605 events. Its symmetrical breakdown behavior (VBR min/max = 31.53 V / 36.27 V at IT = 5 mA) ensures consistent protection in both polarity directions without external biasing.
It operates within a −55 °C to +175 °C junction temperature range and delivers 4.5 A maximum peak pulse current (8/20 µs waveform) while maintaining low leakage (≤0.1 µA @ VRWM) and stable clamping (VC = 37.3 V typ. @ IPP = 1.0 A), enabling robust protection in harsh automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 33 V - Maximum continuous reverse operating voltage before clamping initiates; defines safe signal swing margin. |
| VBR (min/max) | 31.53 V / 36.27 V @ 5 mA - Confirmed bidirectional breakdown threshold; ensures symmetric protection onset. |
| VC @ IPP = 1.0 A | 37.3 V typ. - Clamped voltage during 1 A transient; determines maximum stress on downstream ICs. |
| C @ 0 V, 1 MHz | 10 pF - Low signal-line capacitance; preserves high-speed integrity in CAN, LIN, or sensor interfaces. |
| ESD Rating | ±30 kV (IEC 61000-4-2 contact/air) - Full-system ESD immunity level compliant with automotive EMC requirements. |
| TJ(MAX) | +175 °C - Enables placement near hot components (e.g., powertrain ECUs) without thermal derating. |
| Package | XDFNW2 (1.0 × 0.6 mm, 0.5 mm height) - Wettable flank design supports automated optical inspection and high-density PCB layouts. |
Pinout & Package
Package: XDFNW2 (Case 521AE), 2-terminal surface-mount device with exposed pad (no internal thermal pad connection required). Dimensions: 1.00 mm × 0.60 mm × 0.50 mm, pitch 0.65 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode/Cathode (bidirectional) | Shared terminal for symmetrical Zener conduction; connects to protected line (e.g., CAN_H). |
| Pin 2 | Anode/Cathode (bidirectional) | Shared terminal opposite Pin 1; connects to ground or reference plane for clamping path. |
Key Features
| Feature | Design Value |
|---|---|
| Precise clamping voltage | 37.3 V typical at 1.0 A pulse ensures predictable overvoltage limiting without overshoot into sensitive logic rails. |
| AEC-Q101 qualified | Validated for automotive use per stress test requirements including HTGB, TCT, and ESD - supports PPAP documentation. |
| Wettable flank package | Side-wettable terminations enable reliable solder joint inspection via AOI, critical for zero-defect automotive manufacturing. |
| High-temperature operation | Rated to +175 °C TJ(MAX) allows direct placement on engine control modules without thermal shielding or spacing penalties. |
| Low dynamic capacitance | 10 pF at 0 V bias minimizes signal distortion on 1–5 Mbps CAN FD or LIN bus lines without requiring layout compensation. |
Applications
| Automotive ECU Protection | In-Vehicle Networking (IVN) |
|---|---|
Use Scenario: Protecting microcontroller I/O pins and transceiver inputs in engine control units exposed to load dump and jump-start transients. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector interface before signal conditioning circuitry. Use Value: Limits clamped voltage to 37.3 V during 4.5 A pulses, preventing latch-up or gate oxide damage in 3.3 V/5 V automotive MCUs. | Use Scenario: ESD protection on CAN FD physical layer lines (CAN_H/CAN_L) in ADAS domain controllers. IC Role / Device Role / Timing Role: Low-capacitance (10 pF) Zener clamp installed per-line at ECU harness entry point. Use Value: Maintains signal integrity up to 5 Mbps while surviving ±30 kV contact ESD per IEC 61000-4-2 without degrading edge rate. |
| Voltage-Sensitive Sensor Interfaces | Industrial Control I/O Protection |
Use Scenario: Safeguarding analog front-end inputs of pressure, temperature, or position sensors in battery management systems. IC Role / Device Role / Timing Role: Standoff protector between sensor element and ADC input, referenced to local ground plane. Use Value: 0.1 µA max leakage at 33 V VRWM avoids DC offset errors; 31.53–36.27 V VBR window ensures early clamping before sensor rail overvoltage. | Use Scenario: Input protection for programmable logic controller (PLC) digital I/O channels interfacing with field devices. IC Role / Device Role / Timing Role: Primary transient suppressor on 24 V DC input lines subject to inductive switching surges. Use Value: Withstands 4.5 A 8/20 µs pulses and operates reliably from −55 °C to +175 °C, supporting extended industrial temperature deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SZNZ8DH36VMXWT5G | Higher VRWM (36 V), higher VBR (34.2–39.6 V), same package and clamping (40.5 V @ 1 A). | Better suited for 36 V nominal systems (e.g., 24 V industrial with high surge margin); less margin for 33 V rails. | Select when system nominal voltage exceeds 33 V and clamping headroom above 37.3 V is acceptable. |
| ESD5Z3V3T5G | Lower VRWM (3.3 V), lower clamping (8.5 V @ 1 A), same XDFNW2 package but not AEC-Q101 qualified. | Targeted at low-voltage consumer interfaces (USB, audio); lacks automotive qualification and high-temp rating. | Use only in non-automotive, commercial-temperature applications where 3.3 V rail protection is needed. |
Compared with SZNZ8DH33VMXWT5G, the SZNZ8DH36VMXWT5G offers higher voltage tolerance but reduced safety margin on 33 V systems, while the ESD5Z3V3T5G provides lower-voltage clamping without automotive qualification or 175 °C operation - making SZNZ8DH33VMXWT5G the optimal choice for AEC-Q101-compliant 33 V transient suppression.
Availability
SZNZ8DH33VMXWT5G is available at Aetrix Electronics and suitable for automotive electronic control units, in-vehicle networking interfaces, and voltage-sensitive sensor circuits requiring stable component supply across long production lifecycles.
Supply support for SZNZ8DH33VMXWT5G 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 (Semiconductor Components Industries, LLC) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NZ8DH Series is engineered specifically for high-reliability, high-temperature ESD and transient protection in automotive electronics - emphasizing AEC-Q101 compliance, wettable flank packaging, and precise clamping performance across extended temperature ranges.
FAQ
What is the maximum clamping voltage of the SZNZ8DH33VMXWT5G during a 1.0 A transient event?
The SZNZ8DH33VMXWT5G has a typical clamping voltage (VC) of 37.3 V at 1.0 A peak pulse current (8/20 µs waveform), as specified in the Electrical Characteristics table. This value represents the maximum voltage seen across the device during standardized surge testing and defines the upper limit of protection for downstream circuitry. The SZNZ8DH33VMXWT5G maintains this clamping performance consistently across its operating temperature range.
Is the SZNZ8DH33VMXWT5G qualified for automotive applications?
Yes, the SZNZ8DH33VMXWT5G carries the SZ prefix indicating AEC-Q101 qualification and PPAP capability. It is explicitly rated for automotive use with full stress-test validation including high-temperature operating life, temperature cycling, and ESD robustness. The SZNZ8DH33VMXWT5G is intended for mission-critical automotive systems such as ECUs and IVN nodes where reliability under extreme conditions is mandatory.
What is the package type and dimensions of the SZNZ8DH33VMXWT5G?
The SZNZ8DH33VMXWT5G uses the XDFNW2 package (Case 521AE), measuring 1.00 mm × 0.60 mm × 0.50 mm with 0.65 mm pin pitch. It features wettable flanks for automated optical inspection and is Pb-free, halogen-free, and RoHS compliant. This ultra-compact 2-terminal design enables high-density routing in space-constrained automotive PCBs without compromising thermal or electrical performance.
Does the SZNZ8DH33VMXWT5G support bidirectional ESD protection?
Yes, the SZNZ8DH33VMXWT5G is a fully bidirectional Zener protection diode. Its symmetrical breakdown characteristics - with VBR min/max = 31.53 V / 36.27 V measured pin 1-to-2 and pin 2-to-1 - ensure identical clamping behavior for positive and negative transients. This makes the SZNZ8DH33VMXWT5G ideal for protecting AC-coupled or differential signal lines like CAN, LIN, or sensor outputs without polarity constraints.
What is the maximum junction temperature rating for the SZNZ8DH33VMXWT5G?
The SZNZ8DH33VMXWT5G is rated for a maximum junction temperature (TJ(MAX)) of +175 °C, as confirmed in the Maximum Ratings table. This high-temperature capability allows direct integration into thermally demanding locations such as powertrain control modules or under-hood ECUs without thermal derating or additional heatsinking. The SZNZ8DH33VMXWT5G sustains full electrical performance across its entire −55 °C to +175 °C operating range.
SZNZ8DH33VMXWT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 2-UDFN
- Series:
- NZ8DH
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 26V (Max)
- Voltage - Breakdown (Min):
- 31.53V
- Voltage - Clamping (Max) @ Ipp:
- 37.3V
- Current - Peak Pulse (10/1000µs):
- 1A
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- Automotive
- Capacitance @ Frequency:
- 10pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 2-X2DFNW (1x0.6)
SZNZ8DH33VMXWT5G FAQ
1.How can I place an order for SZNZ8DH33VMXWT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZ8DH33VMXWT5G 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 SZNZ8DH33VMXWT5G reliable?
The price and inventory of SZNZ8DH33VMXWT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ8DH33VMXWT5G is usually 5 days.
3.What payment methods are accepted for SZNZ8DH33VMXWT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ8DH33VMXWT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZ8DH33VMXWT5G?
SZNZ8DH33VMXWT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZ8DH33VMXWT5G 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 SZNZ8DH33VMXWT5G?
For technical support, including SZNZ8DH33VMXWT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ8DH33VMXWT5G requirements.
6.How does Aetrix verify that SZNZ8DH33VMXWT5G is sourced from the original manufacturer or authorized distributors?
All SZNZ8DH33VMXWT5G 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 SZNZ8DH33VMXWT5G meets industry standards.
7.What is the process for return or replacement of SZNZ8DH33VMXWT5G?
All SZNZ8DH33VMXWT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ8DH33VMXWT5G, 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 SZNZ8DH33VMXWT5G part is unused and in its original packaging.
Return procedure for SZNZ8DH33VMXWT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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