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NXP Semiconductors PUSB2X4Y125
- Part No.:
- PUSB2X4Y125
- Manufacturer:
- NXP Semiconductors
- Category:
- TVS Diodes
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
PUSB2X4Y125.pdf
- Description:
- TRANS VOLTAGE SUPPRESSOR DIODE
- Quantity:
- Payment:
- Shipping:
Inventory:6,683
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Product details
Overview
PUSB2X4Y125 from Nexperia is a quad-channel ESD protection diode array designed for USB 2.0 high-speed data lines, featuring 0.85 pF maximum line capacitance per channel, ±12 kV IEC 61000-4-2 contact ESD protection, and rail-to-rail clamping architecture in an SOT363 (SC-88) package. It safeguards D+ and D− signal pairs in portable and embedded host/peripheral interfaces.
For engineers reviewing the PUSB2X4Y125 datasheet, PUSB2X4Y125 pinout, PUSB2X4Y125 application, or PUSB2X4Y125 equivalent, this device is selected for high-fidelity signal integrity preservation in 480 Mbps USB 2.0 paths where low capacitance, fast clamping response, and compact footprint are critical design constraints.
Technical Context
The PUSB2X4Y125 implements a snap-back clamping structure with negative dynamic resistance, reducing clamping voltage during ESD transients-typical VCL is +3.8 V at +4.5 A and −2.1 V at −5.2 A per channel. Its ultra-low capacitance (0.7 pF typical at 2.5 V bias) ensures minimal signal distortion across the USB 2.0 bandwidth.
Each of the four protected channels operates with breakdown voltage (VBR) between 6 V and 9 V at 1 mA, reverse leakage ≤1 µA at 5 V, and forward voltage ≤0.7 V. The device supports ambient temperatures from −40 °C to +85 °C and withstands ±15 kV air discharge per IEC 61000-4-2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Protection Level | ±12 kV contact / ±15 kV air per IEC 61000-4-2 level 4 - ensures robust immunity against user-handling ESD events on USB ports |
| Line Capacitance (Cline) | 0.7 pF typical at 2.5 V bias - preserves USB 2.0 eye diagram integrity and minimizes insertion loss up to 480 MHz |
| Clamping Voltage (VCL) | +3.8 V at +4.5 A (positive), −2.1 V at −5.2 A (negative) - limits transient overvoltage seen by downstream PHY ICs |
| Breakdown Voltage (VBR) | 6–9 V at 1 mA - establishes safe operating margin above 3.3 V/5 V USB supply rails while triggering before IC damage thresholds |
| Dynamic Resistance (rdyn) | 0.21–0.35 Ω (TLP, 100 ns) - enables rapid energy shunting with minimal voltage overshoot during fast ESD pulses |
| Package | SOT363 (SC-88), 6-pin surface-mount - provides 2.2 mm × 1.35 mm footprint compatible with dense PCB layouts and automated assembly |
Pinout & Package
SOT363 (SC-88) plastic surface-mounted package, 6-lead, dimensions 2.2 mm × 1.35 mm × 0.95 mm (L × W × H), with pin 1 index marking. Compatible with standard reflow and wave soldering profiles per Nexperia SOT363 footprints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Protected I/O (Channel A) | Input/output line for first differential pair (e.g., USB D+) |
| 2 | Ground | Common reference for all clamping diodes; must be low-inductance connection to system ground plane |
| 3 | Protected I/O (Channel B) | Input/output line for second differential pair (e.g., USB D−) |
| 4 | Protected I/O (Channel C) | Additional high-speed signal line (e.g., ID or auxiliary control) |
| 5 | No Connect (n.c.) | Internally unconnected; no external connection required or recommended |
| 6 | Protected I/O (Channel D) | Fourth protected line, enabling full quad-channel protection for dual-port or extended interface use |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail clamping diodes | Enables bidirectional protection down to 0 V and up to VCC, eliminating need for external biasing in 3.3 V/5 V USB systems |
| Ultra-low 0.85 pF max line capacitance | Maintains >90% signal amplitude at 480 MHz, meeting USB 2.0 eye mask compliance without equalization |
| Snap-back clamping behavior | Reduces clamping voltage under surge by 30–40% vs. standard TVS, lowering stress on connected PHY transceivers |
| IEC 61000-4-2 level 4 certified | Validated for industrial and consumer end-equipment CE/UL/FCC certification without additional system-level ESD redesign |
Applications
| USB 2.0 Host Port Protection | USB 2.0 Peripheral Port Protection |
|---|---|
Use Scenario: Protecting upstream USB ports on notebooks, motherboards, or docking stations against user-induced ESD during cable insertion. IC Role / Device Role / Timing Role: Front-end ESD suppressor placed directly at USB connector, preceding the USB transceiver PHY. Use Value: Prevents latch-up or permanent damage to integrated USB PHYs while maintaining <0.1 dB insertion loss at 240 MHz fundamental frequency. |
Use Scenario: Securing downstream USB ports on portable devices (smartphones, tablets) and peripherals (keyboards, mice) exposed to frequent handling. IC Role / Device Role / Timing Role: Signal-line protector co-located with USB receptacle, providing bidirectional clamping for both D+ and D− lines. Use Value: Enables compact 2.2 mm × 1.35 mm layout with no performance trade-off-0.7 pF typical capacitance avoids timing skew between differential pairs. |
| Set-Top Box USB Interface | Game Console Controller Port |
Use Scenario: Shielding USB 2.0 OTG or storage ports on digital entertainment devices subjected to ESD in living-room environments. IC Role / Device Role / Timing Role: Quad-channel protector covering D+, D−, VBUS sense, and ID lines in single-chip solution. Use Value: Eliminates need for discrete diodes or larger arrays-four independent channels in one SOT363 package reduce BOM count and board area by 60% vs. dual-SOT23 approach. |
Use Scenario: Hardening controller synchronization and data lines (e.g., D+/D− plus accessory detection) in game console accessories and dongles. IC Role / Device Role / Timing Role: High-reliability ESD guard for low-latency human-interface data paths requiring sub-nanosecond response. Use Value: Dynamic resistance <0.35 Ω ensures clamping activation within 1 ns of ESD onset, preventing bit errors or disconnect events during gameplay. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2EUSB30DR | Single-channel, 0.5 pF typical capacitance, ±8 kV IEC 61000-4-2 contact rating | Requires two devices for full USB 2.0 D+/D− protection; lower ESD rating limits use in ruggedized consumer products | Select when lowest possible capacitance is prioritized over multi-line integration and higher ESD immunity |
| ESD5V3U4-2/TR | Quad-channel, 1.0 pF max capacitance, ±15 kV air discharge only (no ±12 kV contact rating specified) | Lacks IEC 61000-4-2 level 4 contact certification; clamping voltage not characterized at 4.5 A/−5.2 A | Acceptable for cost-sensitive designs where contact ESD testing is not mandated, but not drop-in for certified USB 2.0 endpoints |
Compared with TPD2EUSB30DR and ESD5V3U4-2/TR, the PUSB2X4Y125 uniquely delivers quad-channel integration, ±12 kV contact-certified protection, and 0.7 pF typical capacitance in a single SOT363 package-making it optimal for space-constrained, compliance-driven USB 2.0 implementations.
Availability
PUSB2X4Y125 is available at Aetrix Electronics and suitable for USB 2.0 host port protection, peripheral interface hardening, and set-top box connectivity applications requiring stable component supply and long-term production continuity.
Supply support for PUSB2X4Y125 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, reliable standard logic, analog, and ESD protection solutions for automotive, industrial, and consumer markets.
The PUSB2X4Y125 belongs to Nexperia's USB-focused ESD protection portfolio, engineered specifically to meet stringent signal integrity and regulatory compliance requirements of high-speed serial interfaces without compromising board space or thermal performance.
FAQ
What is the maximum line capacitance specification for PUSB2X4Y125?
The PUSB2X4Y125 has a maximum line capacitance of 0.85 pF per channel at 1 MHz and 0 V bias, with typical values of 0.7 pF at 2.5 V bias. This ultra-low capacitance ensures minimal impact on USB 2.0 signal rise/fall times and maintains compliance with USB IF eye diagram masks. The PUSB2X4Y125 achieves this via optimized silicon geometry and advanced diode junction design.
Does PUSB2X4Y125 support bidirectional ESD protection on all four channels?
Yes, the PUSB2X4Y125 provides true bidirectional rail-to-rail clamping on pins 1, 3, 4, and 6-each channel protects against both positive and negative ESD transients relative to ground. This is confirmed by its ±12 kV contact and ±15 kV air discharge ratings per IEC 61000-4-2, and its symmetric clamping voltages (+3.8 V / −2.1 V). The PUSB2X4Y125 requires no external biasing to achieve this behavior.
What is the function of pin 5 on the PUSB2X4Y125?
Pin 5 of the PUSB2X4Y125 is designated as "n.c." (no connect) in the official Nexperia datasheet-meaning it is internally unconnected and must remain unconnected on the PCB. Routing or soldering to pin 5 may compromise thermal performance or introduce parasitic coupling. The PUSB2X4Y125 relies solely on pins 1, 2, 3, 4, and 6 for functional operation and grounding.
Can PUSB2X4Y125 be used in automotive applications?
No-the PUSB2X4Y125 is not automotive-qualified. Nexperia explicitly states in its datasheet that unless otherwise specified, non-automotive qualified products like the PUSB2X4Y125 are unsuitable for automotive use and have not undergone AEC-Q200 stress testing or automotive-grade qualification. For automotive USB protection, designers must select parts explicitly marked as AEC-Q200 qualified, not the PUSB2X4Y125.
How does the snap-back clamping behavior of PUSB2X4Y125 improve system protection?
The PUSB2X4Y125 uses a snap-back clamping structure with negative dynamic resistance, which lowers clamping voltage significantly once triggered-e.g., from initial breakdown (~7 V) to steady-state clamping (+3.8 V at 4.5 A). This reduces peak overvoltage stress on downstream USB transceivers and improves reliability during repeated ESD events. The PUSB2X4Y125 achieves this without external circuitry, making it simpler and more effective than conventional TVS diodes.
PUSB2X4Y125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 3.8V (Typ)
- Current - Peak Pulse (10/1000µs):
- 4.5A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- USB
- Capacitance @ Frequency:
- 0.7pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP
PUSB2X4Y125 FAQ
1.How can I place an order for PUSB2X4Y125 through Aetrix?
Please submit a Request for Quotation (RFQ) for PUSB2X4Y125 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 PUSB2X4Y125 reliable?
The price and inventory of PUSB2X4Y125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PUSB2X4Y125 is usually 5 days.
3.What payment methods are accepted for PUSB2X4Y125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PUSB2X4Y125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PUSB2X4Y125?
PUSB2X4Y125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PUSB2X4Y125 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 PUSB2X4Y125?
For technical support, including PUSB2X4Y125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PUSB2X4Y125 requirements.
6.How does Aetrix verify that PUSB2X4Y125 is sourced from the original manufacturer or authorized distributors?
All PUSB2X4Y125 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 PUSB2X4Y125 meets industry standards.
7.What is the process for return or replacement of PUSB2X4Y125?
All PUSB2X4Y125 units undergo pre-shipment inspection (PSI). If there is an issue with PUSB2X4Y125, 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 PUSB2X4Y125 part is unused and in its original packaging.
Return procedure for PUSB2X4Y125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PUSB2X4Y125 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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ESD5Z3.3T1G
onsemi
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D5V0H1B2LP-7B
Diodes Incorporated
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D5V0P1B2LP-7B
Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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