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onsemi SZESD8451MUT5G
- Part No.:
- SZESD8451MUT5G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
SZESD8451MUT5G.pdf
- Description:
- TVS DIODE 3.3VWM 19VC 2X3DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,706
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SZESD8451MUT5G from onsemi is an automotive-grade, ultra-low-capacitance ESD protection diode designed for high-speed data lines. It delivers 0.30 pF max junction capacitance (at 1 MHz), 3.3 V reverse working voltage, and clamps to 13.7 V at 3.7 A (8/20 µs pulse), making it suitable for USB 3.0 SuperSpeed signal integrity protection in automotive infotainment systems.
For engineers reviewing the SZESD8451MUT5G datasheet, pinout, applications, or equivalent options, key selection criteria include IEC 61000−4−2 Level 4 (±15 kV contact) compliance, latch-up-free operation on USB 3.0 SS lines, and X3DFN2 package compatibility with high-density PCB layouts.
Technical Context
The SZESD8451MUT5G uses a snap-back SCR-based structure optimized for fast transient response and low clamping voltage. Its bidirectional configuration protects both I/O-to-GND paths with symmetrical breakdown (5.5–8.3 V) and holding voltage (2.05 V), enabling robust ESD suppression without DC bias dependency.
It operates across −55 °C to +125 °C junction temperature range and meets AEC−Q101 qualification requirements for automotive use. The device avoids latch-up on USB 3.0 SuperSpeed differential pairs per load-line analysis, distinguishing it from HDMI-unqualified variants like ESD8451N2T5G.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage | 3.3 V - sets maximum continuous DC bias before leakage rises significantly |
| Junction Capacitance | 0.20–0.30 pF @ 1 MHz - preserves signal integrity on >5 Gbps USB 3.0 links |
| Clamping Voltage | 13.7 V @ 3.7 A (8/20 µs) - limits transient overvoltage to safe levels for 3.3 V I/O receivers |
| ESD Rating | ±15 kV contact per IEC 61000−4−2 Level 4 - exceeds industrial and automotive immunity requirements |
| Operating Temperature | −55 °C to +125 °C - supports under-hood and dashboard deployment |
| Dynamic Resistance | 1.0 Ω (Pin1–Pin2) - ensures rapid voltage collapse during ESD events |
Pinout & Package
The SZESD8451MUT5G is housed in a 0.62 mm × 0.32 mm × 0.24 mm X3DFN2 package (Case 152AF), featuring a 0.35 mm pitch and bottom-exposed thermal pad for enhanced power dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode (I/O) | Connects to protected high-speed data line (e.g., USB 3.0 TX+/RX+) |
| Pin 2 | Cathode (GND) | Direct connection to system ground plane; critical for low-inductance ESD current path |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 0.30 pF max ensures <0.1 dB insertion loss at 2.5 GHz - essential for USB 3.0 eye diagram compliance |
| AEC−Q101 qualified | Validated for automotive electronics including infotainment and ADAS sensor interfaces |
| Latch-up free on USB 3.0 | Verified via load-line analysis - eliminates risk of destructive sustained conduction during transients |
| IEC 61000−4−2 Level 4 rated | Withstands ±15 kV contact discharge without degradation - meets OEM ESD test plans |
Applications
| USB 3.0 Interface Protection | eSATA Interface Protection |
|---|---|
Use Scenario: Protecting SuperSpeed differential pairs in automotive head units against ESD events during cable hot-plug. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector entry point. Use Value: 0.30 pF capacitance prevents signal rise-time degradation, maintaining >90% eye opening at 5 Gbps. | Use Scenario: Shielding eSATA data lanes in vehicle-mounted storage modules from electrostatic discharge during field servicing. IC Role / Device Role / Timing Role: Low-clamp ESD diode integrated into PCB-level ESD protection network near receptacle. Use Value: 13.7 V clamping voltage ensures receiver ICs (e.g., ASMedia ASM1083) remain within absolute maximum ratings. |
| MHL 2.0 Mobile Link Protection | Automotive Infotainment Display Interface |
Use Scenario: Safeguarding MHL 2.0 video/audio link between smartphone and car display during docking. IC Role / Device Role / Timing Role: I/O-to-GND ESD clamp on each MHL lane (CLK, DATA0–DATA2) with minimal parasitic loading. Use Value: Sub-0.3 pF capacitance avoids jitter accumulation and maintains MHL 2.0's 2.25 Gbps per-lane timing budget. | Use Scenario: Protecting LVDS or FPD-Link III display interface traces in digital instrument clusters exposed to user touch. IC Role / Device Role / Timing Role: High-reliability ESD shunt mounted adjacent to display connector with thermal pad soldered to ground plane. Use Value: AEC−Q101 qualification guarantees stable performance over 15-year automotive service life under thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD8451MUT5G | 0.30 pF max capacitance, 13.7 V clamping @ 3.7 A, X3DFN2 (0.62×0.32 mm) | Latch-up free on USB 3.0 SS; AEC−Q101 qualified | Preferred for automotive USB 3.0 designs requiring smallest footprint and highest reliability |
| ESD8006MUT5G | 0.35 pF max capacitance, 12.5 V clamping @ 4.0 A, X3DFN2 (0.62×0.32 mm) | Also latch-up free on USB 3.0; slightly lower clamping but higher capacitance | Alternative when tighter clamping voltage is prioritized over minimal signal loading |
Compared with ESD8451MUT5G and ESD8006MUT5G, the SZESD8451MUT5G offers the lowest capacitance in the family while retaining identical AEC−Q101 qualification and USB 3.0 compatibility - making it optimal for next-generation high-bandwidth automotive serial interfaces where signal fidelity is critical.
Availability
SZESD8451MUT5G is available at Aetrix Electronics and suitable for automotive infotainment, USB 3.0 peripheral interfaces, and eSATA storage subsystems requiring stable component supply across extended product lifecycles.
Supply support for SZESD8451MUT5G 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 SZESD8451MUT5G belongs to onsemi's ESD8000 series of SCR-based protection devices, engineered specifically for latch-up-free, ultra-low-capacitance ESD suppression on high-speed serial interfaces in harsh environments.
FAQ
What is the primary circuit role of the SZESD8451MUT5G in a USB 3.0 design?
The SZESD8451MUT5G serves as a bidirectional I/O-to-GND ESD protection diode placed at the USB 3.0 connector interface. Its 0.30 pF capacitance minimizes signal distortion on SuperSpeed differential pairs, while its 13.7 V clamping voltage ensures downstream PHY receivers remain within safe operating limits during ±15 kV ESD events. The device is validated latch-up free for USB 3.0 SS operation.
Does the SZESD8451MUT5G meet automotive qualification standards?
Yes, the SZESD8451MUT5G is AEC−Q101 qualified and PPAP capable, with full traceability and process control for automotive applications. Its operating junction temperature range of −55 °C to +125 °C and robust ESD performance make it suitable for infotainment head units, telematics control units, and display interface modules deployed in vehicles.
How does the SZESD8451MUT5G differ from the ESD8451N2T5G variant?
The SZESD8451MUT5G uses the X3DFN2 package (0.62×0.32 mm) and is AEC−Q101 qualified, whereas ESD8451N2T5G uses the larger XDFN2 package (1.0×0.6 mm) and lacks automotive qualification. Electrically, SZESD8451MUT5G has 1.0 Ω dynamic resistance and 13.7 V clamping at 3.7 A, versus 0.84 Ω and 17.0 V for ESD8451N2T5G - reflecting different optimization for compactness vs. peak current handling.
Can the SZESD8451MUT5G be used for HDMI interface protection?
No, the SZESD8451MUT5G is not recommended for HDMI applications due to latch-up risk on TMDS lines. onsemi explicitly states that ESD8451 devices are latch-up free for USB 3.0 and DisplayPort but unsuitable for HDMI 1.3a/1.4. For HDMI, ESD8104 or ESD8040 are specified alternatives with higher holding current and modified SCR characteristics.
What is the significance of the "SZ" prefix in SZESD8451MUT5G?
The "SZ" prefix denotes onsemi's automotive-grade product line, indicating unique site and process control change requirements, full AEC−Q101 qualification, PPAP capability, and enhanced traceability for automotive OEMs. It distinguishes SZESD8451MUT5G from commercial-grade ESD8451MUT5G, which shares electrical specs but lacks automotive validation and documentation.
SZESD8451MUT5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 0201 (0603 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 5.5V
- Voltage - Clamping (Max) @ Ipp:
- 19V
- Current - Peak Pulse (10/1000µs):
- 16A (100ns)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 0.2pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-X3DFN (0.6x0.3) (0201)
SZESD8451MUT5G FAQ
1.How can I place an order for SZESD8451MUT5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZESD8451MUT5G 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 SZESD8451MUT5G reliable?
The price and inventory of SZESD8451MUT5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZESD8451MUT5G is usually 5 days.
3.What payment methods are accepted for SZESD8451MUT5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZESD8451MUT5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZESD8451MUT5G?
SZESD8451MUT5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZESD8451MUT5G 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 SZESD8451MUT5G?
For technical support, including SZESD8451MUT5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZESD8451MUT5G requirements.
6.How does Aetrix verify that SZESD8451MUT5G is sourced from the original manufacturer or authorized distributors?
All SZESD8451MUT5G 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 SZESD8451MUT5G meets industry standards.
7.What is the process for return or replacement of SZESD8451MUT5G?
All SZESD8451MUT5G units undergo pre-shipment inspection (PSI). If there is an issue with SZESD8451MUT5G, 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 SZESD8451MUT5G part is unused and in its original packaging.
Return procedure for SZESD8451MUT5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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