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onsemi SZESD8451N2T5G
- Part No.:
- SZESD8451N2T5G
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 2-XDFN
- Datasheet:
-
SZESD8451N2T5G.pdf
- Description:
- TVS DIODE 3.3VWM 19VC 2XDFN
- Quantity:
- Payment:
- Shipping:
Inventory:6,021
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Product details
Overview
SZESD8451N2T5G from onsemi is an automotive-grade, ultra-low-capacitance ESD protection diode designed for high-speed data lines including USB 3.0 and DisplayPort. It delivers 0.25 pF typical junction capacitance at 2.5 GHz, ±15 kV IEC 61000−4−2 contact ESD immunity, and 17.0 V clamping voltage at 5.0 A (8/20 µs), ensuring signal integrity in voltage-sensitive interfaces.
For engineers reviewing the SZESD8451N2T5G datasheet, pinout, applications, or equivalent options, key selection criteria include dynamic resistance (0.84 Ω), latch-up-free operation in USB 3.0 SS and DisplayPort, and AEC-Q101 qualification for automotive deployment.
Technical Context
The SZESD8451N2T5G employs a snap-back SCR structure optimized for high-speed serial interfaces, with verified latch-up-free behavior in USB 3.0 SuperSpeed and DisplayPort channels per load-line analysis. Its bidirectional clamping architecture protects both I/O-to-GND paths without polarity constraints.
It operates across −55 °C to +125 °C junction temperature range and meets ISO 10605 (330 pF/2 kΩ) and IEC 61000−4−2 Level 4 (±8 kV contact) standards. The device's 0.84 Ω dynamic resistance enables low-voltage overshoot during transient events, critical for sub-1 V signaling margins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Working Voltage | 3.3 V - sets maximum continuous DC bias before leakage rise; matches USB 3.0 VBUS-referenced I/O rails |
| Junction Capacitance | 0.25 pF @ 2.5 GHz - ensures <0.2 dB insertion loss up to 10 GHz, preserving signal eye opening |
| Clamping Voltage | 17.0 V @ 5.0 A (8/20 µs) - limits transient overvoltage to safe levels for 3.3 V interface receivers |
| Dynamic Resistance | 0.84 Ω - minimizes voltage overshoot (ΔV = IPP × RDYN) during fast ESD pulses |
| ESD Rating | ±15 kV contact per IEC 61000−4−2 - exceeds Level 4 requirement, enabling robust board-level ESD compliance |
| Operating Temperature | −55 °C to +125 °C - supports under-hood automotive and industrial ambient conditions |
Pinout & Package
Package: XDFN2 (Case 711AM), 1.0 mm × 0.6 mm × 0.3 mm, 2-terminal surface-mount package with exposed copper pad for thermal dissipation and mechanical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode (I/O side) | Connects to protected high-speed data line (e.g., USB 3.0 TX+/RX+); bidirectional conduction path |
| Pin 2 | Cathode (GND side) | Connects to system ground plane; provides low-inductance discharge path for ESD transients |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 0.25 pF @ 2.5 GHz - preserves signal integrity in >5 Gbps differential links without equalization penalty |
| AEC-Q101 qualified | Validated for automotive applications requiring PPAP documentation and zero-defect reliability |
| Latch-up free in USB 3.0 SS | Confirmed via load-line analysis - eliminates risk of destructive sustained conduction during transients |
| Bidirectional ESD clamping | Protects AC-coupled or DC-biased data lines without polarity sensitivity or external biasing |
| Pb-free, RoHS compliant | Meets JEDEC J-STD-020 reflow profile (260 °C peak) and halogen-free manufacturing requirements |
Applications
| USB 3.0 SuperSpeed Interface | DisplayPort Main Link |
|---|---|
Use Scenario: Protecting differential TX/RX pairs in host/port controllers against connector-based ESD events during hot-plug. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed within 3 mm of connector, shunting ESD current to chassis ground. Use Value: Maintains <0.3 dB insertion loss at 5 GHz while clamping transients to ≤17 V, preventing PHY layer damage and link training failure. |
Use Scenario: Safeguarding 2.7/5.4/8.1 Gbps DisplayPort lanes in monitors, docking stations, and GPUs against cable-discharge events. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp on each lane pair, referenced to local analog ground to avoid common-mode noise injection. Use Value: Enables full compliance with IEC 61000−4−2 Level 4 without degrading eye diagram margin or increasing bit error rate. |
| eSATA Data Lines | Automotive Infotainment USB Hub |
Use Scenario: Shielding eSATA Gen II (3 Gbps) cables and connectors from electrostatic discharge in desktop storage enclosures. IC Role / Device Role / Timing Role: Dual-rail ESD protector on TX/RX lines, mounted adjacent to receptacle with minimal trace length. Use Value: Provides 0.25 pF loading to preserve signal rise/fall times (<150 ps), avoiding jitter accumulation and link negotiation errors. |
Use Scenario: Protecting USB 2.0/3.0 ports in automotive head units and telematics modules exposed to harsh cabin ESD environments. IC Role / Device Role / Timing Role: AEC-Q101-qualified ESD diode integrated into front-panel USB routing, with traceable sourcing and PPAP support. Use Value: Guarantees operation from −40 °C to +105 °C ambient and withstands ≥100,000 hot-plug cycles without parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESD8451MUT5G | Higher clamping voltage (13.7 V @ 3.7 A), higher dynamic resistance (1.0 Ω), same X3DFN2 package | Optimized for lower-current USB 2.0 HS/FS; not rated for 5.0 A pulse required by USB 3.0 SS stress testing | Select when protecting lower-speed interfaces where tighter clamping is prioritized over peak current handling |
| ESD8006MUT5G | 0.35 pF capacitance, 12.5 V clamping @ 4.0 A, AEC-Q101 qualified, same XDFN2 footprint | Designed specifically for DisplayPort 1.2/1.4; includes enhanced latch-up immunity for TMDS-like loads | Prefer for DisplayPort applications demanding stricter voltage clamping and proven TMDS compatibility |
Compared with ESD8451MUT5G and ESD8006MUT5G, SZESD8451N2T5G offers the lowest dynamic resistance (0.84 Ω) and highest peak current rating (5.0 A), making it optimal for USB 3.0 SuperSpeed and high-energy ESD environments where voltage overshoot must be minimized.
Availability
SZESD8451N2T5G is available at Aetrix Electronics and suitable for USB 3.0 interface protection, automotive infotainment systems, and DisplayPort main link designs requiring stable component supply and AEC-Q101 compliance.
Supply support for SZESD8451N2T5G 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 power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
SZESD8451N2T5G belongs to the ESD8000 series of snap-back SCR-based protection devices, engineered specifically for latch-up-free ESD defense in high-speed serial interfaces such as USB 3.0 and DisplayPort.
FAQ
What is the maximum operating temperature for SZESD8451N2T5G?
The SZESD8451N2T5G supports a junction temperature range of −55 °C to +125 °C, validated per AEC-Q101 stress testing. This allows reliable operation in under-dash automotive environments and industrial enclosures where ambient temperatures exceed 85 °C. The device's thermal performance is enabled by its XDFN2 package with exposed copper pad.
Does SZESD8451N2T5G support HDMI applications?
No, SZESD8451N2T5G is not recommended for HDMI 1.3a/1.4 TMDS applications due to latch-up risk identified in load-line analysis. The datasheet explicitly states ESD8104 or ESD8040 as alternatives for HDMI. SZESD8451N2T5G is qualified for USB 3.0 SS, DisplayPort, and USB 2.0 HS/FS - all confirmed latch-up free per Table 1.
What is the clamping voltage of SZESD8451N2T5G under IEC 61000−4−2 testing?
SZESD8451N2T5G achieves a clamping voltage of 17.0 V at 5.0 A (8/20 µs pulse), which corresponds to IEC 61000−4−2 Level 4 (±8 kV contact). This value is measured per Figure 12 TLP I-V curve and confirmed in the Electrical Characteristics table - critical for protecting 3.3 V receivers from overvoltage damage.
Is SZESD8451N2T5G pin-compatible with ESD8451MUT5G?
No, SZESD8451N2T5G uses the XDFN2 package (Case 711AM), while ESD8451MUT5G uses X3DFN2 (Case 152AF) - different footprints (1.0 × 0.6 mm vs. 0.62 × 0.32 mm) and pin pitches (0.65 mm vs. 0.35 mm). PCB layout changes are required for substitution; they are functional alternatives only, not drop-in replacements.
What does the "SZ" prefix indicate in SZESD8451N2T5G?
The "SZ" prefix denotes automotive-grade qualification: SZESD8451N2T5G is AEC-Q101 certified and PPAP capable, with controlled manufacturing site and change management processes. It meets stringent automotive reliability, traceability, and documentation requirements beyond standard commercial ESD8451N2T5G variants.
SZESD8451N2T5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 2-XDFN
- 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-XDFN (1x0.6) (SOD-882)
SZESD8451N2T5G FAQ
1.How can I place an order for SZESD8451N2T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for SZESD8451N2T5G 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 SZESD8451N2T5G reliable?
The price and inventory of SZESD8451N2T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SZESD8451N2T5G is usually 5 days.
3.What payment methods are accepted for SZESD8451N2T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SZESD8451N2T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SZESD8451N2T5G?
SZESD8451N2T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SZESD8451N2T5G 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 SZESD8451N2T5G?
For technical support, including SZESD8451N2T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SZESD8451N2T5G requirements.
6.How does Aetrix verify that SZESD8451N2T5G is sourced from the original manufacturer or authorized distributors?
All SZESD8451N2T5G 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 SZESD8451N2T5G meets industry standards.
7.What is the process for return or replacement of SZESD8451N2T5G?
All SZESD8451N2T5G units undergo pre-shipment inspection (PSI). If there is an issue with SZESD8451N2T5G, 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 SZESD8451N2T5G part is unused and in its original packaging.
Return procedure for SZESD8451N2T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SZESD8451N2T5G Tags
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ESD9B5.0ST5G
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