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onsemi SZNZ8DH47VMXWT5G
- Part No.:
- SZNZ8DH47VMXWT5G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 2-UDFN
- Datasheet:
-
SZNZ8DH47VMXWT5G.pdf
- Description:
- DUAL DIODE ZENER PROTECTION 47V,
- Quantity:
- Payment:
- Shipping:
Inventory:6,457
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Product details
Overview
SZNZ8DH47VMXWT5G from onsemi is a bidirectional Zener protection diode in an XDFNW2 1.0 × 0.6 mm package, designed for ESD and transient overvoltage protection of voltage-sensitive circuits. It features a working peak reverse voltage (VRWM) of 38 V, clamping voltage (VC) of 52.7 V at 1.0 A, breakdown voltage (VBR) range 44.55–51.25 V, ±30 kV IEC 61000-4-2 ESD rating, and 8 pF typical capacitance at 0 V - ideal for automotive ECUs and in-vehicle networking interfaces.
For engineers reviewing the SZNZ8DH47VMXWT5G datasheet, pinout, applications, or equivalent options, key selection criteria include clamping performance under 1.0 A pulse, low 8 pF capacitance for high-speed signal lines, AEC-Q101 qualification, wettable flank package for AOI, and compatibility with 38 V DC bias rails in harsh-temperature automotive environments.
Technical Context
The SZNZ8DH47VMXWT5G implements a single-channel, bidirectional Zener clamp topology optimized for fast transient suppression without forward conduction path dependency. Its symmetrical breakdown behavior (VBR tested pin1↔pin2) enables robust protection on AC-coupled or differential signal lines such as CAN FD or LIN bus stubs.
Rated for TJ up to +175 °C and qualified to AEC-Q101, it supports mission-critical automotive applications where thermal stability and ESD immunity must coexist. The XDFNW2 package's wettable flanks ensure solder joint inspection integrity in automated SMT assembly for safety-relevant modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 38 V - maximum continuous reverse operating voltage before clamping begins; sets upper limit for protected line DC bias |
| VBR (min/max) | 44.55 V / 51.25 V at IT = 5 mA - defines guaranteed breakdown threshold window for design margining |
| VC @ IPP = 1.0 A | 52.7 V - clamped voltage during 8/20 µs surge; determines peak stress on downstream IC inputs |
| C @ 0 V, 1 MHz | 8 pF - low parasitic capacitance preserves signal integrity on >100 Mbps serial links (e.g., CAN FD) |
| ESD Rating | ±30 kV contact/air per IEC 61000-4-2 - exceeds automotive OEM requirements for human-body-model surges |
| TJ(max) | +175 °C - enables placement near powertrain or under-hood ECUs without derating |
| Package | XDFNW2 (Case 521AE), 1.0 × 0.6 × 0.5 mm - ultra-compact footprint with wettable flanks for AOI-compliant reflow |
Pinout & Package
Package: XDFNW2 (Case 521AE), 2-terminal ultra-compact surface-mount package with exposed thermal pad and wettable flank side walls for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode/Cathode (bidirectional) | Interchangeable terminal; symmetrical Zener structure allows either pin to serve as anode or cathode depending on polarity of transient |
| 2 | Anode/Cathode (bidirectional) | Interchangeable terminal; no fixed polarity - enables single-device protection of floating or AC-coupled lines |
Key Features
| Feature | Design Value |
|---|---|
| Precise clamping voltage | 52.7 V clamping at 1.0 A ensures predictable overvoltage limiting without overshoot into downstream logic thresholds |
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress per JESD47 |
| Wettable flank package | Enables 100% automated optical inspection of solder fillets - critical for zero-defect manufacturing in safety-critical ECUs |
| High-temperature operation | +175 °C junction rating supports direct mounting on engine control modules without thermal derating |
| Low 8 pF capacitance | Minimizes signal distortion on high-speed data lines (e.g., CAN FD up to 5 Mbps) while maintaining ESD robustness |
Applications
| Automotive Engine Control Unit (ECU) | In-Vehicle Networking (IVN) – CAN FD Bus |
|---|---|
Use Scenario: Protection of microcontroller GPIOs and analog sensor inputs exposed to load-dump and jump-start transients in under-hood ECUs. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector interface before signal conditioning circuitry. Use Value: Clamps 52.7 V surges within 1 ns while adding only 8 pF loading - prevents latch-up and input damage without degrading 12-bit ADC sampling accuracy. | Use Scenario: ESD protection on CAN FD differential pair (CANH/CANL) in body control modules with >2 Mbps data rates. IC Role / Device Role / Timing Role: Low-capacitance bidirectional clamp installed across differential lines to suppress ±30 kV contact ESD without skew or jitter. Use Value: 8 pF capacitance avoids signal rise-time degradation; symmetrical VBR ensures equal clamping on both polarities of fast edge transitions. |
| Voltage-Sensitive Sensor Interface | Infotainment System USB/MIPI Lines |
Use Scenario: Guarding precision current-sense amplifier inputs in 48 V mild-hybrid battery management systems. IC Role / Device Role / Timing Role: High-impedance shunt protector placed between sense resistor and op-amp input to avoid DC loading error. Use Value: 0.1 µA max leakage at 38 V VRWM preserves <0.1% gain error; 52.7 V VC limits fault energy below amplifier absolute maximum rating. | Use Scenario: Protecting MIPI D-PHY lanes and USB 2.0 data lines in head-unit display controllers subject to assembly-line ESD events. IC Role / Device Role / Timing Role: Ultra-low-capacitance TVS placed adjacent to connector to absorb HBM discharges before reaching SerDes PHY. Use Value: 8 pF capacitance maintains eye diagram integrity at 480 Mbps; ±30 kV ESD rating exceeds IEC 61000-4-2 Level 4 compliance margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SZ1.5SM47A-E3/57T | DO-214AB package (4.5 × 3.5 mm), 53.3 V VC @ 12.3 A, 200 pF capacitance | Higher clamping energy but 25× higher capacitance - unsuitable for >10 Mbps signals | Select only for lower-speed power rail protection where board space permits larger package |
| TPD2E001DRYR | 2-channel, 15 pF per line, 12 V VRWM, ±8 kV ESD rating, SOT-553 package | Lower voltage rating and ESD level; not AEC-Q101 qualified | Acceptable for non-automotive consumer USB ports but lacks thermal and reliability validation for ECU use |
Compared with SZ1.5SM47A-E3/57T and TPD2E001DRYR, the SZNZ8DH47VMXWT5G uniquely combines AEC-Q101 qualification, 8 pF capacitance, ±30 kV ESD rating, and XDFNW2 footprint - making it the only option validated for high-speed, high-reliability automotive signal line protection.
Availability
SZNZ8DH47VMXWT5G is available at Aetrix Electronics and suitable for automotive ECUs, in-vehicle networking nodes, and voltage-sensitive sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SZNZ8DH47VMXWT5G 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 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 transient voltage suppression in automotive electronics, emphasizing AEC-Q101 compliance, ultra-low capacitance, and compact wettable-flank packaging for automated manufacturing.
FAQ
What is the maximum working peak reverse voltage (VRWM) for SZNZ8DH47VMXWT5G?
The SZNZ8DH47VMXWT5G has a VRWM of 38 V, meaning it can continuously block up to 38 V in reverse bias without entering conduction. This value defines the highest steady-state DC voltage present on the protected line during normal operation, and exceeding it risks premature clamping or leakage-induced power loss. The SZNZ8DH47VMXWT5G is therefore suited for 36 V nominal automotive systems and 48 V mild-hybrid architectures where transient margins are tightly constrained.
Is SZNZ8DH47VMXWT5G qualified for automotive applications?
Yes, the SZNZ8DH47VMXWT5G carries the "SZ" prefix indicating AEC-Q101 qualification and PPAP capability. It undergoes stress testing per JESD47 including high-temperature reverse bias, temperature cycling, and ESD robustness validation. Its +175 °C maximum junction temperature and XDFNW2 wettable flank package further align with automotive manufacturing and under-hood deployment requirements - confirming SZNZ8DH47VMXWT5G as a production-ready solution for safety-critical ECUs.
What is the clamping voltage of SZNZ8DH47VMXWT5G under a standard 8/20 µs surge?
The SZNZ8DH47VMXWT5G delivers a typical clamping voltage (VC) of 52.7 V when subjected to a 1.0 A 8/20 µs current pulse. This value represents the maximum voltage seen by downstream circuitry during transient events and is measured across the device terminals under standardized surge conditions. Because VC remains stable across production lots and temperature, the SZNZ8DH47VMXWT5G provides consistent overvoltage limiting - essential for protecting 50 V-rated microcontrollers and analog front-ends in automotive domains.
Does SZNZ8DH47VMXWT5G have polarity-sensitive pinout?
No, the SZNZ8DH47VMXWT5G is a bidirectional Zener diode with symmetrical electrical characteristics between its two terminals. Pin 1 and Pin 2 are functionally identical - either may serve as anode or cathode depending on transient polarity. This eliminates orientation constraints during PCB layout and simplifies placement on differential or AC-coupled signal paths. The SZNZ8DH47VMXWT5G's marking code "A7" appears on one side of the XDFNW2 body but does not indicate pin polarity.
What is the typical capacitance of SZNZ8DH47VMXWT5G at zero bias?
The SZNZ8DH47VMXWT5G exhibits a typical capacitance of 8 pF at 0 V DC bias and 1 MHz test frequency. This low value minimizes signal attenuation and timing skew on high-speed serial buses such as CAN FD, LIN, and sensor interfaces operating above 1 Mbps. Measured with guard ring and calibrated fixtures, the 8 pF figure is representative across production lots and remains stable from −55 °C to +125 °C - ensuring SZNZ8DH47VMXWT5G maintains signal fidelity across full automotive temperature ranges.
SZNZ8DH47VMXWT5G 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):
- 38V (Max)
- Voltage - Breakdown (Min):
- 44.55V
- Voltage - Clamping (Max) @ Ipp:
- 52.7V
- Current - Peak Pulse (10/1000µs):
- 1A
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- Automotive
- Capacitance @ Frequency:
- 8pF @ 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)
SZNZ8DH47VMXWT5G FAQ
1.How can I place an order for SZNZ8DH47VMXWT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZNZ8DH47VMXWT5G 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 SZNZ8DH47VMXWT5G reliable?
The price and inventory of SZNZ8DH47VMXWT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZNZ8DH47VMXWT5G is usually 5 days.
3.What payment methods are accepted for SZNZ8DH47VMXWT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZNZ8DH47VMXWT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZNZ8DH47VMXWT5G?
SZNZ8DH47VMXWT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZNZ8DH47VMXWT5G 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 SZNZ8DH47VMXWT5G?
For technical support, including SZNZ8DH47VMXWT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZNZ8DH47VMXWT5G requirements.
6.How does Aetrix verify that SZNZ8DH47VMXWT5G is sourced from the original manufacturer or authorized distributors?
All SZNZ8DH47VMXWT5G 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 SZNZ8DH47VMXWT5G meets industry standards.
7.What is the process for return or replacement of SZNZ8DH47VMXWT5G?
All SZNZ8DH47VMXWT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZNZ8DH47VMXWT5G, 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 SZNZ8DH47VMXWT5G part is unused and in its original packaging.
Return procedure for SZNZ8DH47VMXWT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZNZ8DH47VMXWT5G Tags
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