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Nexperia USA Inc. PUSB3FA1Z
- Part No.:
- PUSB3FA1Z
- Manufacturer:
- Nexperia USA Inc.
- Category:
- TVS Diodes
- Package:
- 10-XFDFN
- Datasheet:
-
PUSB3FA1Z.pdf
- Description:
- TVS DIODE 3VC DFN2510A-10
- Quantity:
- Payment:
- Shipping:
Inventory:15,358
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Product details
Overview
PUSB3FA1 from Nexperia is a 4-channel ultra-low-capacitance ESD protection diode array designed for SuperSpeed USB 3.2 (10 Gbps), HDMI, DisplayPort, eSATA, and LVDS interfaces. It delivers ±15 kV IEC 61000-4-2 contact ESD protection with 0.29 pF line capacitance per channel, 0.27 Ω dynamic resistance, and snapback clamping down to 1.5 V at 1 A, enabling signal integrity preservation in high-speed port protection.
For engineers reviewing the PUSB3FA1 datasheet, PUSB3FA1 pinout, PUSB3FA1 application, or PUSB3FA1 equivalent, key selection criteria include differential pair capacitance matching (≤0.05 pF), rail-to-rail clamping architecture, DFN2510A-10 footprint compatibility, and verified eye diagram performance at 10 Gbps USB 3.2 and 148.5 MHz HDMI 2.0.
Technical Context
The PUSB3FA1 implements four independent snapback-triggered ESD protection diodes with rail-to-rail clamping, each featuring a breakdown voltage of 5.5–9 V and clamping voltage of ±3 V at ±5 A (IEC 61000-4-5). Its ultra-low 0.29 pF typical line capacitance and ≤0.05 pF inter-pair capacitance mismatch preserve signal integrity on differential high-speed buses.
It operates across –40 °C to +85 °C ambient temperature, supports 1.65 V maximum input voltage, and maintains <100 nA reverse leakage at 1.65 V. The device uses a negative-dynamic-resistance structure to reduce clamping voltage during ESD transients while avoiding latch-up under normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating | ±15 kV contact discharge per IEC 61000-4-2 Level 4 - ensures robust system-level immunity without external TVS cascading |
| Line Capacitance | 0.29 pF typical per channel at 1 MHz - minimizes signal distortion on 10 Gbps USB 3.2 and HDMI 2.0 links |
| Dynamic Resistance | 0.27 Ω typical (TLP, ±1 A) - enables low-voltage clamping (VCL = ±3 V at ±5 A) to protect downstream PHYs |
| Breakdown Voltage | 5.5–9 V at 1 mA - sets precise snapback initiation threshold above normal interface voltage swing |
| Capacitance Matching | ≤0.05 pF difference between differential pairs - preserves common-mode rejection and impedance balance |
| Package | DFN2510A-10 (SOT1176-1), 2.5 mm × 1.0 mm × 0.5 mm - enables compact layout adjacent to high-speed connectors |
Pinout & Package
Encapsulated in a leadless DFN2510A-10 (SOT1176-1) package with 0.5 mm pitch, the PUSB3FA1 features a symmetric 10-terminal layout optimized for differential pair routing and thermal dissipation. Ground terminals are placed at pins 3 and 8 to minimize loop inductance during ESD events.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | CH1 anode/cathode | ESD protection path for first differential signal pair (e.g., USB3 TX+/−) |
| 2 | CH2 anode/cathode | ESD protection path for second differential signal pair (e.g., USB3 RX+/−) |
| 3 | GND | Primary ground return for CH1/CH2 clamping current; low-inductance connection required |
| 4 | CH3 anode/cathode | ESD protection path for third differential signal pair (e.g., HDMI TMDS0+/−) |
| 5 | CH4 anode/cathode | ESD protection path for fourth differential signal pair (e.g., HDMI TMDS1+/−) |
| 6, 7, 9, 10 | n.c. | No internal connection - must remain unconnected on PCB to avoid parasitic coupling |
| 8 | GND | Secondary ground return for CH3/CH4 clamping current; decoupling capacitor recommended |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance matching | ≤0.05 pF inter-pair capacitance delta - maintains differential impedance stability and reduces NEXT crosstalk |
| Snapback clamping architecture | 1.5 V snapback voltage at 1 A - limits transient overvoltage to safe levels for 1.2 V/1.8 V PHY receivers |
| Rail-to-rail bidirectional clamping | Clamps both positive and negative ESD transients to VDD and GND - eliminates need for separate VCC clamp diodes |
| Matched 0.5 mm trace spacing | Optimized pad layout for 0.5 mm differential pair routing - simplifies controlled-impedance PCB design |
Applications
| USB 3.2 Gen 2 Port Protection | HDMI 2.0 Interface Protection |
|---|---|
Use Scenario: Protecting host and peripheral USB 3.2 Gen 2 Type-A/C ports against repeated ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Front-end ESD shunt placed immediately before the USB controller PHY, providing sub-nanosecond response to ±15 kV discharges. Use Value: Preserves 10 Gbps eye opening (verified in Fig. 5/6) while limiting clamping voltage to ±3 V, preventing PHY latch-up or damage. | Use Scenario: Shielding HDMI 2.0 source (GPU) and sink (TV/display) ports from ESD during cable mating and handling. IC Role / Device Role / Timing Role: Differential ESD suppressor on all three TMDS data lanes and clock lane, placed within 3 mm of the HDMI connector. Use Value: Maintains <0.3 pF per lane with matched capacitance, ensuring minimal jitter increase and passing HDMI compliance eye mask (Fig. 7/8). |
| DisplayPort 1.4 Link Protection | eSATA III Transceiver Protection |
Use Scenario: Securing DisplayPort 1.4 sources (laptop GPU) and sinks (dock/monitor) operating at HBR3 (8.1 Gbps) rates. IC Role / Device Role / Timing Role: Four-channel ESD guard on main link lanes (AUX, HPD, and two differential pairs), co-located with connector footprint. Use Value: Enables full bandwidth operation with <−25 dB insertion loss at 4 GHz (Fig. 1) and <−60 dB differential NEXT (Fig. 3). | Use Scenario: Hardening eSATA III (6 Gbps) external storage ports against ESD in consumer NAS and docking stations. IC Role / Device Role / Timing Role: Bidirectional ESD clamp on differential SATA TX/RX pairs, mounted directly at the eSATA receptacle. Use Value: Delivers ±15 kV protection without degrading signal rise/fall times - validated via TDR impedance flatness (Fig. 4). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-high-speed ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor ESD7L5.0DT5G | Single-channel, 0.35 pF capacitance, ±12 kV ESD rating | Requires four discrete devices for quad-channel protection; higher total board area and routing complexity | Select when cost-per-channel is prioritized over layout density and inter-pair matching |
| Vishay VEML6040-GS08 | Not applicable - optical ambient light sensor, unrelated function | N/A - incorrect product category; excluded from functional comparison | Avoid - misidentified part; not an ESD protection device |
Compared with ESD7L5.0DT5G, PUSB3FA1 provides integrated 4-channel matching, 0.06 pF lower capacitance, and +3 kV higher ESD rating - critical for 10 Gbps compliance. VEML6040-GS08 is not an ESD protector and must be excluded from selection.
Availability
PUSB3FA1 is available at Aetrix Electronics and suitable for USB 3.2 Gen 2 host ports, HDMI 2.0 display interfaces, and DisplayPort 1.4 link protection requiring stable component supply across consumer electronics, industrial displays, and embedded computing platforms.
Supply support for PUSB3FA1 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
Nexperia is a global semiconductor expert focused on high-performance, energy-efficient logic, discrete, and MOSFET components, serving automotive, industrial, and consumer markets with scalable manufacturing and AEC-Q200 qualified products.
The PUSB3FA1 belongs to Nexperia's ultra-high-speed ESD protection portfolio, engineered specifically to meet the stringent capacitance, clamping, and layout requirements of 10 Gbps+ serial interfaces without compromising signal fidelity.
FAQ
What is the maximum recommended trace length between PUSB3FA1 and the protected connector?
Trace length should be ≤3 mm from device pads to connector pins to minimize inductance and preserve ESD response time. Longer traces increase clamping voltage overshoot and degrade eye diagram performance, as confirmed by TDR measurements showing impedance discontinuity beyond 4 mm (Fig. 4).
Does PUSB3FA1 require external bias or control signals?
No - PUSB3FA1 is a passive, bidirectional ESD suppressor with no power or enable pins. It operates solely via snapback diode action and requires only proper grounding at pins 3 and 8; no DC bias, pull-ups, or configuration is needed.
Can PUSB3FA1 be used on 1.2 V PCIe Gen 4 lanes?
No - its 5.5–9 V breakdown voltage exceeds PCIe Gen 4's 1.2 V signaling range and risks false triggering. It is specified only for USB 3.2, HDMI, DisplayPort, eSATA, and LVDS interfaces with ≥1.5 V common-mode voltage, per datasheet Section 1 and Table 5.
How does the 0.27 Ω dynamic resistance impact system-level protection?
This low dynamic resistance enables clamping voltages of ±3 V at ±5 A (Table 5), reducing stress on downstream PHYs by >40% versus typical 0.5 Ω ESD diodes. It directly lowers peak induced voltage (V = I × R) during IEC 61000-4-5 surges, verified in Figs. 13–14.
PUSB3FA1Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Package/Case:
- 10-XFDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- Voltage - Breakdown (Min):
- 5.5V
- Voltage - Clamping (Max) @ Ipp:
- 3V (Typ)
- Current - Peak Pulse (10/1000µs):
- 7A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.29pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DFN2510A-10
PUSB3FA1Z FAQ
1.How can I place an order for PUSB3FA1Z through Aetrix?
Please submit a Request for Quotation (RFQ) for PUSB3FA1Z 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 PUSB3FA1Z reliable?
The price and inventory of PUSB3FA1Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PUSB3FA1Z is usually 5 days.
3.What payment methods are accepted for PUSB3FA1Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PUSB3FA1Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PUSB3FA1Z?
PUSB3FA1Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PUSB3FA1Z 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 PUSB3FA1Z?
For technical support, including PUSB3FA1Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PUSB3FA1Z requirements.
6.How does Aetrix verify that PUSB3FA1Z is sourced from the original manufacturer or authorized distributors?
All PUSB3FA1Z 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 PUSB3FA1Z meets industry standards.
7.What is the process for return or replacement of PUSB3FA1Z?
All PUSB3FA1Z units undergo pre-shipment inspection (PSI). If there is an issue with PUSB3FA1Z, 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 PUSB3FA1Z part is unused and in its original packaging.
Return procedure for PUSB3FA1Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PUSB3FA1Z Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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onsemi
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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