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Diodes Incorporated DUSBULC6-CSP4-7
- Part No.:
- DUSBULC6-CSP4-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 4-UFBGA, WLBGA
- Datasheet:
-
DUSBULC6-CSP4-7.pdf
- Description:
- TVS DIODE 3VWM U-WLB0808-4
- Quantity:
- Payment:
- Shipping:
Inventory:7,661
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Product details
Overview
DUSBULC6-CSP4 from Diodes Incorporated is a 2-channel, low-capacitance TVS diode array designed for ESD protection of high-speed differential I/O lines. It features a minimum reverse breakdown voltage of 6 V, maximum peak pulse current of 7.5 A (8/20 µs), typical channel input capacitance of 0.8 pF, and ±15 kV IEC 61000-4-2 contact/air ESD rating - deployed in USB 2.0 data line protection.
For engineers reviewing the DUSBULC6-CSP4 datasheet, DUSBULC6-CSP4 pinout, DUSBULC6-CSP4 application, or DUSBULC6-CSP4 equivalent, key selection criteria include sub-1.2 pF channel capacitance, dual-channel symmetric clamping, W-WLB0808-4 CSP package footprint compatibility, and validated eye-diagram integrity per USB 2.0 high-speed specification.
Technical Context
This device implements two independent bidirectional TVS diodes in a monolithic silicon structure, each with a low dynamic impedance of 0.35 Ω at 1–5 A pulse current. Its junction capacitance remains stable below 1.2 pF up to 1 GHz, enabling minimal signal distortion on 480 Mbps USB 2.0 differential pairs.
The W-WLB0808-4 package integrates ultra-low-profile copper pillar bumps and under-bump metallization (UBM), delivering thermal resistance of 206 °C/W (junction-to-ambient) and supporting reflow-compatible assembly on fine-pitch PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Breakdown Voltage (VBR) | 6 V min - ensures reliable clamping above 3.3 V I/O rail without false triggering |
| Peak Pulse Current (IPP) | 7.5 A @ 8/20 µs - withstands industrial-level surge transients per IEC 61000-4-5 |
| Channel Input Capacitance (CIN) | 0.8 pF typ / 1.2 pF max @ 1 MHz - preserves USB 2.0 eye opening and jitter margin |
| ESD Rating (IEC 61000-4-2) | ±15 kV contact & air - meets full system-level ESD immunity requirements for end-equipment certification |
| Clamping Voltage (VCL) | ~12 V @ 7.5 A - limits transient overvoltage to safe levels for downstream PHY circuitry |
| Dynamic Impedance (Rd) | 0.35 Ω typ - minimizes voltage overshoot during fast ESD events |
Pinout & Package
Package: W-WLB0808-4 - 0.82 mm × 0.82 mm, 0.26 mm height, 4-terminal wafer-level chip-scale package with copper pillar bumps and UBM. Moisture sensitivity level 1 per J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Channel 1 Anode | Connects to first high-speed I/O line (e.g., USB D+); forms bidirectional clamp with GND |
| A2 | Channel 2 Anode | Connects to second high-speed I/O line (e.g., USB D−); independent clamping path |
| GND | Common Cathode Reference | Shared low-inductance return path for both channels; must be tied to clean system ground plane |
| NC | No Connect | Unbonded terminal; left floating per design - no internal connection or function |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low channel capacitance | 0.8 pF typical enables <1% signal rise-time degradation on 480 Mbps USB 2.0 links |
| Dual-channel ESD protection | Two independent, matched TVS paths support differential signaling without skew imbalance |
| IEC 61000-4-2 compliance | ±15 kV contact/air rating verified per standard test waveform - no external filtering required |
| Green, lead-free construction | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb) meets IPC-1752A Class 3 reporting |
Applications
| USB 2.0 Interface Protection | HDMI Data Lane Protection |
|---|---|
Use Scenario: Protecting host/device USB 2.0 transceivers from ESD events during cable insertion or handling. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector, before series AC-coupling capacitors. Use Value: Maintains 480 Mbps eye diagram integrity (Fig. 1–2) while clamping transients to ≤12 V at 7.5 A. |
Use Scenario: Safeguarding HDMI TMDS differential pairs against user-port ESD in consumer AV equipment. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on each TMDS+/- pair, referenced to chassis ground. Use Value: Delivers <−30 dB crosstalk suppression (Fig. 7) and <−20 dB S21 attenuation (Fig. 8) up to 10 GHz. |
| Serial ATA (SATA) Transceiver Protection | IEEE 1394 (FireWire®) Port Protection |
Use Scenario: Shielding SATA Gen II (3 Gbps) transmitter/receiver pins from board-level ESD coupling. IC Role / Device Role / Timing Role: Dual-channel TVS mounted adjacent to SATA connector, minimizing trace inductance. Use Value: Achieves 0.8 pF capacitance at 1 MHz (Fig. 5), preserving signal integrity within SATA compliance mask. |
Use Scenario: Hardening FireWire 400 (400 Mbps) data pair against repeated hot-plug ESD stress in camcorders and audio interfaces. IC Role / Device Role / Timing Role: Symmetric bidirectional clamp on TPB+/TPB− lines, with shared GND reference. Use Value: Supports >10,000 ESD contact events without parameter shift - validated per JEDEC JESD22-A114F. |
Availability
DUSBULC6-CSP4 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI TMDS lane safeguarding, and IEEE 1394 port hardening requiring stable component supply across industrial and consumer electronics production programs.
Supply support for DUSBULC6-CSP4 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The DUSBULC6-CSP4 belongs to Diodes' high-speed ESD protection product line, engineered specifically for signal integrity–critical applications including USB, HDMI, SATA, and FireWire interfaces.
FAQ
What is the recommended PCB layout for DUSBULC6-CSP4 to maintain signal integrity?
Use Diodes' AP02001 suggested pad layout: 0.25 mm solder mask defined pads with 0.15 mm solder paste stencil aperture, placed within 2 mm of the USB/HDMI connector. Keep GND pour solid beneath the device and route I/O traces as controlled-impedance differential pairs with minimal stub length.
Does DUSBULC6-CSP4 support bidirectional or unidirectional clamping?
DUSBULC6-CSP4 provides bidirectional clamping on both channels. Each I/O terminal (A1, A2) connects internally to a symmetrical back-to-back diode pair referenced to GND, enabling protection against positive and negative transients without polarity constraints.
Is DUSBULC6-CSP4 compliant with automotive AEC-Q200 requirements?
No. DUSBULC6-CSP4 is not AEC-Q200 qualified. It is rated for −55 °C to +150 °C operating temperature but lacks the extended reliability testing (e.g., temperature cycling, board flex, failure rate analysis) required for automotive-grade qualification.
How does the 0.8 pF typical capacitance impact USB 2.0 eye diagram performance?
At 0.8 pF, the device adds <0.5 ps of deterministic jitter and maintains >60% eye height at 480 Mbps (Fig. 1–2). This capacitance is low enough to avoid violating USB 2.0 eye mask requirements while providing robust ESD clamping at the physical layer.
DUSBULC6-CSP4-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 4-UFBGA, WLBGA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3V
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 70W
- Power Line Protection:
- Yes
- Applications:
- HDMI
- Capacitance @ Frequency:
- 1.2pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- U-WLB0808-4
DUSBULC6-CSP4-7 FAQ
1.How can I place an order for DUSBULC6-CSP4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DUSBULC6-CSP4-7 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 DUSBULC6-CSP4-7 reliable?
The price and inventory of DUSBULC6-CSP4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DUSBULC6-CSP4-7 is usually 5 days.
3.What payment methods are accepted for DUSBULC6-CSP4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DUSBULC6-CSP4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DUSBULC6-CSP4-7?
DUSBULC6-CSP4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DUSBULC6-CSP4-7 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 DUSBULC6-CSP4-7?
For technical support, including DUSBULC6-CSP4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DUSBULC6-CSP4-7 requirements.
6.How does Aetrix verify that DUSBULC6-CSP4-7 is sourced from the original manufacturer or authorized distributors?
All DUSBULC6-CSP4-7 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 DUSBULC6-CSP4-7 meets industry standards.
7.What is the process for return or replacement of DUSBULC6-CSP4-7?
All DUSBULC6-CSP4-7 units undergo pre-shipment inspection (PSI). If there is an issue with DUSBULC6-CSP4-7, 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 DUSBULC6-CSP4-7 part is unused and in its original packaging.
Return procedure for DUSBULC6-CSP4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DUSBULC6-CSP4-7 Tags
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Diodes Incorporated
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