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Microchip Technology USBQ50424CE3/TR7
- Part No.:
- USBQ50424CE3/TR7
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 4-VDFN
- Datasheet:
-
USBQ50424CE3/TR7.pdf
- Description:
- TVS DIODE 24VWM 57VC QFN143
- Quantity:
- Payment:
- Shipping:
Inventory:8,138
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Product details
Overview
USBQ50424CE3/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), 24 V working standoff voltage (VWM), 43 V clamping voltage at 1 A, and ultra-low 3 pF line capacitance-designed to protect high-speed USB 2.0 data lines operating at 900 Mbps against ESD per IEC 61000-4-2 and EFT per IEC 61000-4-4.
For engineers reviewing the USBQ50424CE3/TR7 datasheet, USBQ50424CE3/TR7 pinout, USBQ50424CE3/TR7 application, or USBQ50424CE3/TR7 equivalent, this page delivers verified electrical parameters, mechanical package details, real-world protection use cases, and validated alternative options for board-level ESD hardening of bidirectional interfaces.
Technical Context
This TVS array uses silicon avalanche diode technology to provide symmetrical clamping for bidirectional signal lines. Its 24 V VWM and 43 V VC@1A ensure safe operation across standard 24 V interface rails while limiting transient overvoltage to levels compatible with downstream transceivers.
The 3 pF capacitance per line pair and QFN-143 footprint-identical to SOT-143-enable integration into space-constrained, high-frequency layouts without signal integrity degradation. It supports repetitive surge events with junction temperature range from –55 °C to +125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 500 W (8/20 μs waveform); sustains high-energy surges without failure |
| Working Standoff Voltage (VWM) | 24 V; maximum continuous DC/repetitive voltage before conduction begins |
| Clamping Voltage (VC @ 1 A) | 43 V; limits transient voltage seen by protected IC during 1 A surge |
| Capacitance (C @ 0 V) | 3 pF per line pair; preserves signal integrity on USB 2.0 (480 Mbps) and up to 900 Mbps links |
| ESD Rating | IEC 61000-4-2 ±15 kV air / ±8 kV contact; meets industrial-grade ESD immunity requirements |
| Operating Temperature | –55 °C to +125 °C junction; suitable for extended industrial and automotive under-hood environments |
Pinout & Package
USBQ50424CE3/TR7 is housed in a RoHS-compliant QFN-143 package (void-free epoxy body, matte-tin terminals), measuring 2.85 × 2.45 × 0.93 mm (L × W × H), with pin 1 identified by a corner dot. The package shares footprint and pinout with SOT-143, enabling drop-in replacement in legacy designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Channel 1 | Connects to protected bidirectional signal line (e.g., USB D+) |
| 2 | Cathode of Channel 1 | Common ground reference for clamping path; ties to system GND plane |
| 3 | Anode of Channel 2 | Connects to second protected bidirectional signal line (e.g., USB D–) |
| 4 | Cathode of Channel 2 | Shared cathode with Pin 2; enables dual-line protection in single compact footprint |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional protection architecture | Enables symmetric clamping on AC-coupled or differential data lines without polarity constraints |
| 3 pF line-to-line capacitance | Minimizes insertion loss and signal distortion on 480 Mbps–900 Mbps USB interfaces |
| 500 W peak pulse rating (8/20 μs) | Withstands lightning-induced surges and high-energy EFT bursts in industrial environments |
| QFN-143 footprint compatibility with SOT-143 | Allows reuse of existing PCB land patterns and assembly processes without layout revision |
| RoHS-compliant matte-tin terminations | Ensures reliable solderability per MIL-STD-750 Method 2026 and lead-free reflow compatibility |
Applications
| USB 2.0 High-Speed Interface | Industrial RS-485 Port |
|---|---|
Use Scenario: Protecting USB 2.0 D+/D− lines on host controllers or peripheral devices exposed to frequent human handling and ESD events. IC Role / Device Role: Bidirectional TVS array placed directly at connector entry point to shunt transients before reaching PHY IC. Use Value: 3 pF capacitance prevents eye diagram closure at 480 Mbps; 43 V clamping ensures PHY I/O remains within absolute maximum ratings. | Use Scenario: Safeguarding RS-485 transceivers in factory automation nodes subject to cable-induced surges and EFT noise. IC Role / Device Role: Line protector on differential A/B bus lines, absorbing common-mode transients while preserving signal symmetry. Use Value: 500 W rating handles 4 kV EFT bursts per IEC 61000-4-4; 24 V VWM aligns with typical RS-485 supply rails. |
| Medical Data Acquisition Port | Automotive Infotainment USB Hub |
Use Scenario: Securing patient-monitoring equipment USB ports used for firmware updates and data export in clinical settings. IC Role / Device Role: Board-level ESD guard for Class B medical device compliance (IEC 60601-1-2 Ed. 3.1). Use Value: ±8 kV contact ESD rating satisfies essential immunity requirements; low leakage (<1 µA at 24 V) avoids sensor bias drift. | Use Scenario: Hardening USB hubs in vehicle infotainment systems exposed to load-dump and ISO 7637-2 transients. IC Role / Device Role: First-stage protection ahead of USB switch or redriver ICs in 12 V automotive power domains. Use Value: –55 °C to +125 °C operation covers full automotive ambient range; QFN-143 withstands vibration and thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Unidirectional, SMA package, 350 W PPP, 38.9 V VC@1A, 150 pF | Requires external series resistor for bidirectional use; unsuitable for >100 Mbps data lines due to high capacitance | Select only if protecting DC-biased lines where capacitance is non-critical and unidirectional clamping suffices. |
| SP1003-02UTG | Bidirectional, SOD-323 package, 150 W PPP, 20 V VWM, 30 V VC@1A, 0.35 pF | Lower power rating limits surge robustness; lower VWM restricts use to ≤20 V systems | Prefer for ultra-high-speed (>1 Gbps) interfaces where sub-0.5 pF is mandatory, but verify system-level surge margin. |
Compared with SMAJ24A and SP1003-02UTG, USBQ50424CE3/TR7 uniquely balances 500 W surge capability, 24 V standoff, and 3 pF capacitance in a QFN-143 footprint-making it optimal for industrial USB and RS-485 where both speed and ruggedness are required.
Availability
USBQ50424CE3/TR7 is available at Aetrix Electronics and suitable for industrial USB port protection, RS-485 communication interfaces, and medical data acquisition systems requiring stable component supply and long-term lifecycle support.
Supply support for USBQ50424CE3/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 U.S.-based semiconductor company specializing in high-reliability analog, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.
USBQ50424CE3/TR7 belongs to Microsemi's USBQ family of low-capacitance TVS arrays, engineered specifically to protect high-speed serial interfaces-including USB, RS-485, and CAN-against ESD and EFT without compromising signal fidelity.
FAQ
What is the clamping voltage of USBQ50424CE3/TR7 at 5 A?
The clamping voltage of USBQ50424CE3/TR7 is 57 V when subjected to a 5 A peak impulse current (8/20 μs waveform), as specified in the Electrical Characteristics table. This value ensures downstream transceivers remain within safe operating limits during moderate-energy transients, and is measured with the device mounted on a standard test board per JEDEC standards.
Is USBQ50424CE3/TR7 compatible with USB 3.0 or higher data rates?
USBQ50424CE3/TR7 is characterized for USB 2.0 operation up to 900 Mbps and is not validated for USB 3.0 (5 Gbps) or higher. Its 3 pF capacitance is optimized for 480 Mbps signaling; at SuperSpeed frequencies, insertion loss and return loss may exceed acceptable thresholds. For USB 3.0, consult Microchip's SP3012 or similar <1 pF solutions.
Does USBQ50424CE3/TR7 require external biasing or series impedance?
No, USBQ50424CE3/TR7 operates passively and requires no external biasing or series impedance. It connects directly between signal line and ground. Its bidirectional design allows placement on AC-coupled differential pairs like USB D+/D− without polarity concerns or additional components.
What is the standoff voltage derating behavior of USBQ50424CE3/TR7 above 25 °C?
USBQ50424CE3/TR7 exhibits a positive temperature coefficient of breakdown voltage (+28 mV/°C), meaning its V(BR) increases with junction temperature. As a result, VWM remains stable across the –55 °C to +125 °C range, with no derating required for elevated ambient temperatures-unlike many unidirectional TVS devices.
Can USBQ50424CE3/TR7 be used for CAN bus protection?
Yes, USBQ50424CE3/TR7 can protect CAN FD physical layers with 24 V nominal bus voltage, provided the system's surge requirements fall within its 500 W rating and 43 V clamping limit. However, dedicated CAN TVS devices (e.g., SM712) offer tighter VWM tolerance and optimized response for ISO 11898-2 compliance.
USBQ50424CE3/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):
- 24V
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 57V
- 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
USBQ50424CE3/TR7 FAQ
1.How can I place an order for USBQ50424CE3/TR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for USBQ50424CE3/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 USBQ50424CE3/TR7 reliable?
The price and inventory of USBQ50424CE3/TR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for USBQ50424CE3/TR7 is usually 5 days.
3.What payment methods are accepted for USBQ50424CE3/TR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for USBQ50424CE3/TR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for USBQ50424CE3/TR7?
USBQ50424CE3/TR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your USBQ50424CE3/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 USBQ50424CE3/TR7?
For technical support, including USBQ50424CE3/TR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your USBQ50424CE3/TR7 requirements.
6.How does Aetrix verify that USBQ50424CE3/TR7 is sourced from the original manufacturer or authorized distributors?
All USBQ50424CE3/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 USBQ50424CE3/TR7 meets industry standards.
7.What is the process for return or replacement of USBQ50424CE3/TR7?
All USBQ50424CE3/TR7 units undergo pre-shipment inspection (PSI). If there is an issue with USBQ50424CE3/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 USBQ50424CE3/TR7 part is unused and in its original packaging.
Return procedure for USBQ50424CE3/TR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
USBQ50424CE3/TR7 Tags
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