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Microchip Technology USBQ50405CE3/TR7
- Part No.:
- USBQ50405CE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 4-VDFN
- Datasheet:
-
USBQ50405CE3/TR7.pdf
- Description:
- TVS DIODE 5VWM 12VC QFN143
- Quantity:
- Payment:
- Shipping:
Inventory:9,899
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Product details
Overview
USBQ50405CE3/TR7 from Microsemi is a bidirectional transient voltage suppressor (TVS) array in QFN-143 package, rated for 500 W peak pulse power (8/20 µs), 5.0 V working standoff voltage (VWM), 6.0 V minimum breakdown voltage (VBR), and 3 pF line capacitance - designed to protect single USB 2.0 data lines operating at up to 900 Mbps against IEC 61000-4-2 ESD and IEC 61000-4-4 EFT transients.
For engineers reviewing the USBQ50405CE3/TR7 datasheet, USBQ50405CE3/TR7 pinout, USBQ50405CE3/TR7 application, or USBQ50405CE3/TR7 equivalent, this page delivers verified electrical parameters, mechanical package details, real-world use scenarios for high-speed interfaces, and validated alternative parts with documented functional differences.
Technical Context
This TVS array employs a symmetric bidirectional avalanche diode structure optimized for low-capacitance signal-line protection. It clamps transients to ≤10.8 V at 1 A and ≤12 V at 5 A (8/20 µs), with <40 µA standby current at 5.0 V VWM, enabling minimal loading on high-speed differential pairs.
Its QFN-143 footprint matches SOT-143 layouts, supporting drop-in replacement in space-constrained USB, RS-485, and Ethernet designs. The device operates across –55 °C to +125 °C junction temperature and meets RoHS compliance with matte-tin terminations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 500 W (8/20 µs waveform) - sustains high-energy lightning-induced surges without failure |
| Working Standoff Voltage (VWM) | 5.0 V - blocks normal USB signal swing while triggering only above safe threshold |
| Breakdown Voltage (VBR) | 6.0 V min @ 1 mA - ensures reliable conduction onset before IC damage occurs |
| Clamping Voltage (VC) | 10.8 V @ 1 A - limits transient voltage seen by downstream PHY to safe logic-level range |
| Line Capacitance | 3 pF @ 1 MHz - preserves signal integrity on 480 Mbps USB 2.0 differential pairs |
| Standby Current (ID) | <40 µA @ VWM - avoids DC loading or bias shift in active receiver circuits |
| Operating Temperature | –55 °C to +125 °C - supports industrial and automotive under-hood environments |
Pinout & Package
Package: QFN-143 (void-free thermosetting epoxy body, RoHS-compliant matte-tin terminations, 0.8 mm nominal height, 2.85 × 2.45 mm footprint). Dot-marked corner indicates Pin 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of Channel 1 | Connects to protected data line (e.g., USB D+) |
| Pin 2 | Cathode of Channel 1 | Connects to ground reference plane for bidirectional clamping |
| Pin 3 | Anode of Channel 2 | Not used - USBQ50405CE3/TR7 is single-channel; pins 3–4 are NC |
| Pin 4 | Cathode of Channel 2 | No connection; isolated per schematic and package marking (Q05C) |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC-coupled or differential signals like USB D+/D− without polarity constraints |
| IEC 61000-4-2/4-4 compliance | Validated to ±30 kV contact / ±30 kV air discharge ESD and 4 kV EFT burst immunity |
| 3 pF line capacitance | Enables use on 480 Mbps USB 2.0 links with <0.5% signal rise-time degradation |
| QFN-143 footprint compatibility | Direct PCB layout reuse from legacy SOT-143 designs, reducing redesign effort |
| RoHS-compliant terminations | Matte-tin plating ensures reliable solderability per MIL-STD-750 Method 2026 |
Applications
| USB 2.0 Interface Protection | RS-485 Data Line Protection |
|---|---|
Use Scenario: Protecting host-side USB 2.0 upstream ports against user-insertion ESD events in consumer docking stations. IC Role / Device Role / Timing Role: TVS array placed immediately before USB connector to shunt transients before reaching PHY IC. Use Value: 3 pF capacitance prevents eye-diagram closure; 10.8 V clamping ensures USB transceiver I/O remains within absolute maximum ratings. | Use Scenario: Safeguarding industrial RS-485 nodes exposed to cable-induced surges in factory automation networks. IC Role / Device Role / Timing Role: Single-channel bidirectional clamp on half-duplex RS-485 A/B pair, referenced to local ground. Use Value: 500 W surge rating handles induced lightning energy; 5.0 V VWM accommodates common-mode voltage swings up to ±7 V. |
| Ethernet 10BASE-T Port | Embedded USB Charging Port |
Use Scenario: Board-level ESD hardening of low-cost 10BASE-T Ethernet PHY interfaces in networked IoT gateways. IC Role / Device Role / Timing Role: Low-capacitance TVS on transformer-coupled TX/RX lines, minimizing insertion loss at 10 MHz. Use Value: 3 pF capacitance adds <0.1 dB attenuation at 10 MHz; clamping below 12 V protects PHY ESD structures. | Use Scenario: Protecting USB Type-A charging ports in portable medical devices from operator-handling ESD. IC Role / Device Role / Timing Role: Bidirectional clamp on D+ line only, preserving BC1.2 charging handshake signaling. Use Value: 5.0 V VWM allows full USB enumeration voltage range; 40 µA leakage avoids battery drain in sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Unidirectional, 5.0 V VWM, 100 pF capacitance, DO-214AC package | Requires external polarity management; unsuitable for AC-coupled or differential lines | Select only if protecting DC-biased single-ended lines where capacitance >30 pF is acceptable |
| SP1003-050 | Bidirectional, 5.0 V VWM, 0.6 pF capacitance, SOD-323 package | Lower capacitance but 300 W PPP rating; not qualified to IEC 61000-4-4 EFT | Prefer for ultra-high-speed (>1 Gbps) links where EFT immunity is secondary to capacitance |
Compared with SMAJ5.0A and SP1003-050, USBQ50405CE3/TR7 uniquely balances 500 W surge capability, 3 pF capacitance, and full IEC 61000-4-2/4-4 compliance in a QFN-143 footprint-making it optimal for USB 2.0 and industrial RS-485 where both speed and robustness are required.
Availability
USBQ50405CE3/TR7 is available at Aetrix Electronics and suitable for USB 2.0 interface protection, industrial RS-485 node hardening, and 10BASE-T Ethernet port safeguarding requiring stable component supply across production lifecycles.
Supply support for USBQ50405CE3/TR7 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
Microsemi Corporation (now part of Microchip Technology) is a semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
The USBQ504xxCe3 series was developed specifically for board-level ESD/EFT protection of high-speed serial interfaces - prioritizing ultra-low capacitance, precise clamping, and compact QFN packaging for USB, RS-485, and Ethernet applications.
FAQ
What is the clamping voltage of USBQ50405CE3/TR7 at 5 A?
The clamping voltage of USBQ50405CE3/TR7 is 12 V maximum at 5 A for an 8/20 µs pulse waveform, as specified in the Electrical Characteristics table on page 2 of RF01086-2 Rev A. This value ensures downstream USB transceivers remain within their absolute maximum voltage ratings during surge events. USBQ50405CE3/TR7 maintains consistent clamping performance across its full operating temperature range.
Is USBQ50405CE3/TR7 compatible with USB 2.0 high-speed (480 Mbps) operation?
Yes, USBQ50405CE3/TR7 is explicitly rated for USB data rates up to 900 Mbps due to its 3 pF line capacitance and low dynamic impedance. Its capacitance introduces negligible signal distortion on 480 Mbps USB 2.0 differential pairs, preserving eye diagram margins. USBQ50405CE3/TR7 has been validated in reference designs for USB host and peripheral ports meeting USB-IF signal integrity requirements.
Does USBQ50405CE3/TR7 require external biasing or direction control?
No, USBQ50405CE3/TR7 is a fully passive, bidirectional TVS array with symmetric avalanche structure - no external bias, direction pins, or control signals are needed. It automatically clamps positive and negative transients equally, making it ideal for AC-coupled or differential interfaces like USB D+/D−. USBQ50405CE3/TR7 functions identically regardless of signal polarity or DC offset.
What is the package dimension of USBQ50405CE3/TR7?
USBQ50405CE3/TR7 uses the QFN-143 package with dimensions 2.85 mm × 2.45 mm (length × width) and 0.8 mm nominal height. Pin pitch is 0.65 mm, and the package features a thermal pad centered on the bottom surface. Full mechanical drawings, including pad layout and land pattern recommendations, are provided on page 4 of RF01086-2 Rev A.
How does USBQ50405CE3/TR7 differ from USBQ50403CE3/TR7?
USBQ50405CE3/TR7 has a 5.0 V working standoff voltage (VWM) and 6.0 V minimum breakdown voltage, whereas USBQ50403CE3/TR7 is rated for 3.3 V VWM and 4.0 V VBR. Both share identical 3 pF capacitance, 500 W peak power, and QFN-143 packaging. USBQ50405CE3/TR7 is selected for 5 V-tolerant interfaces like standard USB 2.0, while USBQ50403CE3/TR7 targets 3.3 V logic systems.
USBQ50405CE3/TR7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 4-VDFN
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- Ethernet
- Capacitance @ Frequency:
- 3pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- QFN-143
USBQ50405CE3/TR7 FAQ
1.How can I place an order for USBQ50405CE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for USBQ50405CE3/TR7 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 USBQ50405CE3/TR7 reliable?
The price and inventory of USBQ50405CE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for USBQ50405CE3/TR7 is usually 5 days.
3.What payment methods are accepted for USBQ50405CE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for USBQ50405CE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for USBQ50405CE3/TR7?
USBQ50405CE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your USBQ50405CE3/TR7 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 USBQ50405CE3/TR7?
For technical support, including USBQ50405CE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your USBQ50405CE3/TR7 requirements.
6.How does Aetrix verify that USBQ50405CE3/TR7 is sourced from the original manufacturer or authorized distributors?
All USBQ50405CE3/TR7 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 USBQ50405CE3/TR7 meets industry standards.
7.What is the process for return or replacement of USBQ50405CE3/TR7?
All USBQ50405CE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with USBQ50405CE3/TR7, 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 USBQ50405CE3/TR7 part is unused and in its original packaging.
Return procedure for USBQ50405CE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
USBQ50405CE3/TR7 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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onsemi
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Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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