USBULC6-2N4 STMicroelectronics TVS Diode (Bi-directional) (Small Outline No-lead) In Stock
STMicroelectronics USBULC6-2N4 is a dual-channel bidirectional TVS diode array designed to protect USB 2.0 data lines from ESD surges, with a 6 V breakdown voltage and 10 V maximum clamping voltage at 50 W peak power. Its ultra-low capacitance preserves high-speed signal integrity on differential USB lines. Available from stock worldwide with competitive pricing and fast shipping.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline No-lead
- Pin Count
- 5
- Lifecycle
- OBSOLETE
- Datasheet
- USBULC6-2N4 Datasheet PDF
- Category
- TVS Diode (Bi-directional)
- Temp Range
- -40.0°C to 150.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual-channel bidirectional protection on 2 USB 2.0 data lines with 6 V breakdown and 10 V clamping voltage
- 50 W peak non-repetitive surge handling safeguards sensitive downstream ICs from harsh ESD events
- Ultra-low capacitance QFN-4 package minimises signal distortion on high-speed differential USB data lines
Applications
The USBULC6-2N4 is purpose-built for protecting USB 2.0 D+ and D- data lines in smartphones, tablets, laptop computers, and USB hubs against electrostatic discharge and fast transient overvoltage events. Its 10 V maximum clamping voltage and 50 W peak pulse rating ensure that downstream USB controllers and application processors remain undamaged even under severe ESD conditions, while the low-capacitance QFN-4 package avoids degrading the high-speed USB signal integrity. The device is equally suited to USB port protection in industrial handheld equipment and point-of-sale terminals exposed to frequent connector insertions.
Specifications
| Reach Compliance Code | Compliant |
| YTEOL | 0 |
| Breakdown Voltage-Min | 6V |
| Case Connection | ANODE |
| Clamping Voltage-Max | 10V |
| Configuration | SINGLE, 2 CHANNEL |
| Diode Element Material | SILICON |
| Diode Type | TRANS VOLTAGE SUPPRESSOR DIODE |
| JESD-30 Code | R-PDSO-N4 |
| Non-rep Peak Rev Power Dis-Max | 50W |
| Number of Elements | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Polarity | UNIDIRECTIONAL |
| Reference Standard | IEC-61000-4-2 |
| Rep Pk Reverse Voltage-Max | 3V |
| Reverse Current-Max | 0.1 µA |
| Reverse Test Voltage | 3V |
| Surface Mount | YES |
| Technology | AVALANCHE |
| Terminal Form | NO LEAD |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Package | Small Outline No-lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8541.10.00.50 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does USBULC6-2N4 clamp ESD surges on USB data lines without corrupting high-speed signals?
The USBULC6-2N4 clamps transient voltages to a maximum of 10 V during a 50 W peak ESD event while presenting ultra-low capacitance on both D+ and D- lines. This low capacitance minimises the impedance mismatch and signal rise-time degradation that would otherwise compromise USB 2.0 high-speed 480 Mbps data integrity.
Which USB connector configurations can USBULC6-2N4 protect with its 2-channel design?
The dual-channel configuration protects both the D+ and D- differential pair of a single USB 2.0 port from a single QFN-4 package, covering the standard 2-wire differential data bus. This one-device-per-port topology simplifies PCB layout and reduces BOM count compared with using 2 discrete TVS diodes per port.
How does the 6 V breakdown voltage of USBULC6-2N4 relate to USB 2.0 supply compatibility?
USB 2.0 data lines operate with signal swings well below 3.3 V, so the 6 V minimum breakdown voltage provides a generous margin above normal signal levels. The bidirectional structure ensures the device clamps overvoltages of either polarity—both positive and negative ESD pulses—while remaining transparent to normal differential USB data signals.
For a compact USB hub design, how much board space does the USBULC6-2N4 QFN-4 package require?
The QFN-4 package has a body size of approximately 1.0 mm × 1.0 mm, allowing designers to place one USBULC6-2N4 per USB port within millimetres of the connector pins. This tiny footprint makes it practical to add ESD protection to all ports of a 4-port or 7-port USB hub without adding significant PCB area or assembly cost.
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STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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