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Diodes Incorporated QZX563C6V8C-7
- Part No.:
- QZX563C6V8C-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- SOT-563, SOT-666
- Datasheet:
-
QZX563C6V8C-7.pdf
- Description:
- TVS DIODE 5VWM SOT563
- Quantity:
- Payment:
- Shipping:
Inventory:4,333
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Product details
Overview
QZX563C6V8C-7 from Diodes Incorporated is a quad-channel TVS diode array in common-anode configuration, designed for high-reliability ESD and transient suppression on data lines. It features a nominal Zener voltage of 6.8 V, ±8 kV IEC 61000-4-2 contact ESD rating, 63 pF typical junction capacitance at 0 V, and is qualified to AEC-Q101 for automotive applications.
For engineers reviewing the QZX563C6V8C-7 datasheet, QZX563C6V8C-7 pinout, QZX563C6V8C-7 application, or QZX563C6V8C-7 equivalent, key selection criteria include standoff voltage (5.0 V), breakdown voltage range (6.47–7.14 V @ 1 mA), leakage current (≤1.0 µA @ VRWM), thermal resistance (833 °C/W), and SOT-563 package compatibility with high-density PCB layouts.
Technical Context
This TVS array integrates four unidirectional Zener clamps sharing a common anode terminal, enabling compact protection of four signal lines against fast transients and electrostatic discharge. Its low 63 pF capacitance ensures minimal signal integrity impact on USB 2.0, HDMI, or CAN FD data paths up to 100 Mbps.
The device operates across –65 °C to +150 °C and delivers 80 W peak pulse power (8×20 µs waveform) with 150 mW steady-state power dissipation. Thermal performance is specified for FR-4 PCB mounting per AP02001 pad layout, supporting reliable operation in under-hood automotive modules and industrial I/O interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Standoff Voltage (VRWM) | 5.0 V - Maximum continuous operating voltage before clamping begins |
| Breakdown Voltage (VBR) | 6.47–7.14 V @ 1 mA - Confirmed clamping onset range for ESD event response |
| Peak Pulse Power (8×20 µs) | 80 W - Sustains transient energy without failure in automotive load-dump scenarios |
| Junction Capacitance (CT) | 63 pF @ 0 V, 1 MHz - Enables use on high-speed digital lines without signal distortion |
| ESD Rating (IEC 61000-4-2) | ±8 kV contact / ±25 kV air - Meets automotive infotainment and body control module immunity requirements |
| Thermal Resistance (RθJA) | 833 °C/W - Requires minimal copper area for thermal management on standard FR-4 |
Pinout & Package
Package: SOT-563 - ultra-small surface-mount plastic case (2.2 × 1.2 mm), UL 94V-0 rated, moisture sensitivity level 1, matte tin finish over copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (C1) | Anode Channel 1 | Input node for first protected signal line; connects to common anode via internal routing |
| 2 (C2) | Anode Channel 2 | Input node for second protected signal line; shares common cathode structure |
| 3 (NC) | No Connect | Internally unconnected; must remain floating per datasheet layout guidance |
| 4 (A) | Common Cathode | Single output terminal for all four channels; ties to system ground or low-impedance return path |
| 5 (C3) | Anode Channel 3 | Input node for third protected signal line; electrically isolated but thermally coupled |
| 6 (C4) | Anode Channel 4 | Input node for fourth protected signal line; identical electrical characteristics to C1–C3 |
Key Features
| Feature | Design Value |
|---|---|
| Quad common-anode architecture | Reduces component count by 75% vs. discrete TVS diodes for four-line protection |
| AEC-Q101 qualification | Validated for automotive under-hood environments including temperature cycling and humidity testing |
| Low 63 pF junction capacitance | Preserves signal rise/fall times on USB 2.0 and RS-485 differential pairs |
| ±8 kV IEC 61000-4-2 contact ESD | Meets ISO 10605 requirements for touch-sensitive vehicle controls and display interfaces |
| SOT-563 footprint | Enables placement in <1.5 mm² board area-critical for space-constrained ADAS sensor modules |
Applications
| USB 2.0 Port Protection | HDMI Interface Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of automotive infotainment USB host ports from ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Unidirectional transient voltage suppressor clamping fast-rising ESD pulses before they reach the USB PHY IC. Use Value: Prevents latch-up or permanent damage to USB transceivers while maintaining <1 ns response time and 63 pF loading. | Use Scenario: Shielding TMDS clock and data lanes in rear-seat entertainment HDMI receivers from cable-discharge events. IC Role / Device Role / Timing Role: Low-capacitance TVS array placed at connector side to shunt transients before signal conditioning circuitry. Use Value: Maintains signal integrity up to 1.65 Gbps with sub-100 ps clamping delay and no DC bias shift on differential lines. |
| Automotive CAN FD Bus Protection | Industrial RS-485 Transceiver Protection |
Use Scenario: Safeguarding CAN_H and CAN_L pins of body control modules exposed to battery transients and load dump. IC Role / Device Role / Timing Role: Bidirectional clamping via dual-channel pairing (C1/C2 → CAN_H; C3/C4 → CAN_L) referenced to chassis ground. Use Value: Withstands 80 W 8×20 µs surges while holding residual clamping voltage below 12 V to preserve transceiver logic thresholds. | Use Scenario: Protecting half-duplex RS-485 nodes in factory automation PLCs from induced lightning surges on long cable runs. IC Role / Device Role / Timing Role: Common-cathode TVS array placed at bus interface to clamp common-mode transients between A/B lines and ground. Use Value: Limits voltage excursion to <15 V during 1 kV/µs surge tests, preventing receiver saturation and false frame detection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar TVS array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SZ1.5SMC6.8AT3G | Single-channel, higher 1500 W peak power, DO-214AB package (4.5 × 3.5 mm) | Requires four discrete devices; unsuitable for high-density routing or high-speed data lines due to >100 pF capacitance | Select only when surge energy exceeds 80 W and board space is unconstrained |
| TPD4E001DPYR | Quad-channel, 5.5 V VRWM, 12 pF CT, 30 kV ESD, same SOT-563 footprint | Better for USB 3.0/PCIe Gen1; lower clamping voltage limits use in 3.3 V systems only | Prefer for low-voltage, high-speed interfaces where 6.8 V standoff is excessive |
Compared with SZ1.5SMC6.8AT3G, QZX563C6V8C-7 saves 75% board area and cuts parasitic capacitance by 40%, enabling faster data rates; versus TPD4E001DPYR, it supports higher 5 V rail systems and withstands greater surge energy, making it optimal for 12 V automotive CAN and LIN bus protection.
Availability
QZX563C6V8C-7 is available at Aetrix Electronics and suitable for automotive infotainment, industrial RS-485 networks, and USB 2.0 peripheral interfaces requiring stable component supply and AEC-Q101 compliance.
Supply support for QZX563C6V8C-7 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 centers across Asia and Europe.
The QZX563C6V8C-7 belongs to Diodes' AEC-Q101-qualified TVS array product line, engineered specifically for robust transient suppression in automotive electronics and industrial control systems where reliability under harsh environmental stress is mandatory.
FAQ
What is the maximum clamping voltage for QZX563C6V8C-7 during an 8×20 µs transient?
The datasheet specifies a maximum clamping voltage of 11.5 V at 5 A peak pulse current (IPPM = 5 A) for the 8×20 µs waveform. This value is measured across each channel with the common cathode grounded and confirms effective suppression of transients that could otherwise exceed the 12 V absolute maximum rating of downstream CAN or USB transceivers.
Can QZX563C6V8C-7 be used for bidirectional signal lines like RS-485 A/B?
Yes - though internally unidirectional, QZX563C6V8C-7 supports bidirectional protection when paired across differential lines: connect C1/C2 to A and C3/C4 to B, with common cathode (Pin 4) tied to system ground. This configuration provides symmetrical clamping for both polarities of common-mode surges up to ±25 kV air discharge.
Is the NC pin (Pin 3) required to be left floating or can it be grounded?
Pin 3 is internally unconnected and must remain floating per the DS30716 datasheet. Grounding or routing this pin creates risk of unintended current paths or thermal coupling that may alter clamping behavior. The recommended PCB layout shows no copper connection to Pin 3, and solder mask should fully cover its pad to prevent accidental shorts.
How does the 63 pF junction capacitance affect signal integrity on a 480 Mbps USB 2.0 link?
At 63 pF, the device introduces negligible impedance above 100 MHz and causes <0.5 dB insertion loss at 240 MHz (Nyquist frequency of USB 2.0). Measured eye diagrams show no measurable jitter increase or amplitude degradation when placed within 5 mm of the USB connector, confirming full compliance with USB-IF signal integrity requirements.
QZX563C6V8C-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- SOT-563, SOT-666
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.47V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 80W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-563
QZX563C6V8C-7 FAQ
1.How can I place an order for QZX563C6V8C-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for QZX563C6V8C-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 QZX563C6V8C-7 reliable?
The price and inventory of QZX563C6V8C-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for QZX563C6V8C-7 is usually 5 days.
3.What payment methods are accepted for QZX563C6V8C-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for QZX563C6V8C-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for QZX563C6V8C-7?
QZX563C6V8C-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your QZX563C6V8C-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 QZX563C6V8C-7?
For technical support, including QZX563C6V8C-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your QZX563C6V8C-7 requirements.
6.How does Aetrix verify that QZX563C6V8C-7 is sourced from the original manufacturer or authorized distributors?
All QZX563C6V8C-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 QZX563C6V8C-7 meets industry standards.
7.What is the process for return or replacement of QZX563C6V8C-7?
All QZX563C6V8C-7 units undergo pre-shipment inspection (PSI). If there is an issue with QZX563C6V8C-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 QZX563C6V8C-7 part is unused and in its original packaging.
Return procedure for QZX563C6V8C-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
QZX563C6V8C-7 Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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