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STMicroelectronics ESDA6V1-5T6
- Part No.:
- ESDA6V1-5T6
- Manufacturer:
- STMicroelectronics
- Category:
- TVS Diodes
- Package:
- 6-UFDFN
- Datasheet:
-
ESDA6V1-5T6.pdf
- Description:
- TVS DIODE 3VWM 6UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,448
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Product details
Overview
ESDA6V1-5T6 from STMicroelectronics is a unidirectional 6.1 V transient voltage suppression diode array designed for I/O line protection in low-speed digital interfaces. It features 5.0 V stand-off voltage (VRM), 12 pF line-to-ground capacitance, <1 ns response time, and clamps ±8 kV IEC 61000-4-2 ESD transients to ≤12 V (VCL at 16 A TLP). It is used in SWD/JTAG debug interfaces on microcontroller development boards.
For engineers reviewing the ESDA6V1-5T6 datasheet, ESDA6V1-5T6 pinout, ESDA6V1-5T6 application, or ESDA6V1-5T6 equivalent, key selection criteria include VRM margin over interface supply voltage, low line capacitance for signal integrity, bidirectional vs. unidirectional configuration, and IEC 61000-4-2 Level 4 compliance for system-level ESD robustness.
Technical Context
This device implements a silicon avalanche diode structure optimized for fast turn-on during sub-nanosecond ESD events. Its unidirectional architecture provides asymmetric clamping - conducting only when the protected line exceeds VRM + forward drop relative to ground - making it suitable for DC-biased signals like SWD clock/data lines referenced to VDD.
Clamping behavior is characterized using TLP testing at 16 A (equivalent to IEC 61000-4-2 8 kV contact discharge), with VCL measured at 30 ns pulse width. Leakage current remains ≤100 nA at VRM, ensuring minimal impact on high-impedance debug bus nodes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Stand-off Voltage (VRM) | 5.0 V - maximum continuous operating voltage before conduction; must exceed interface logic high level (e.g., 3.3 V or 5 V I/O rails) to avoid false triggering |
| Breakdown Voltage (VBR) | 6.1 V @ 1 mA - onset of avalanche conduction; defines minimum overvoltage threshold for protection activation |
| Clamping Voltage (VCL) | ≤12 V @ 16 A TLP - peak voltage seen by protected IC during ESD event; ensures downstream MCU I/O stays below absolute maximum rating |
| Line Capacitance (CI/O-GND) | 12 pF - limits bandwidth degradation on SWD/JTAG lines; supports >30 MHz clock rates without signal distortion |
| Leakage Current (IRM) | ≤100 nA @ VRM - negligible loading on high-impedance debug pins; avoids pull-up/pull-down interference |
| ESD Rating | ±8 kV contact / ±15 kV air per IEC 61000-4-2 Level 4 - meets industrial and automotive system-level ESD immunity requirements |
Pinout & Package
ESDA6V1-5T6 is housed in a SOT-23-6L package (3.05 mm × 1.75 mm × 1.3 mm), with gull-wing leads and exposed thermal pad. Pin 1 is marked by a dot; device orientation follows JEDEC MO-178AB standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Channel 1 | Connected to protected signal line (e.g., SWCLK); conducts to ground during positive ESD surge |
| 2 | Cathode of Channel 1 | Connected to GND; forms low-impedance path for surge current dissipation |
| 3 | Anode of Channel 2 | Connected to second protected line (e.g., SWDIO); enables dual-line protection in single package |
| 4 | Cathode of Channel 2 | Shared GND return; allows independent clamping for two signals with common ground reference |
| 5 | No Connect | Internally floating; must be left unconnected or tied to GND per layout guidelines |
| 6 | GND | Dedicated ground terminal for thermal and electrical performance; requires low-inductance PCB connection |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low line capacitance | 12 pF typical - preserves signal edge rate and eye diagram integrity on 10–30 MHz SWD buses |
| Fast response time | <1 ns - activates before ESD energy couples into sensitive MCU I/O structures |
| Low clamping voltage | ≤12 V at 16 A TLP - keeps protected node within safe operating area of 3.3 V/5 V GPIOs |
| Unidirectional configuration | Single-polarity clamping - eliminates negative voltage excursion on DC-biased lines, preventing latch-up risk |
| AEC-Q101 qualified | Qualified for automotive applications - validated for temperature cycling, HTRB, and ESD stress per AEC-Q101 Rev D |
Applications
| SWD/JTAG Debug Interface | Industrial Sensor Interface |
|---|---|
Use Scenario: Protecting SWCLK and SWDIO lines between ARM Cortex-M debug probe and target MCU during bench development and field programming. IC Role / Device Role / Timing Role: Unidirectional clamping diode array placed directly at connector entry point to shunt ESD surges before reaching MCU I/O pads. Use Value: Enables reliable in-circuit debugging under repeated human-handling ESD exposure while maintaining <30 MHz timing margins. | Use Scenario: Shielding analog/digital sensor outputs (e.g., 4–20 mA loop or RS-485 transceiver I/O) in factory automation PLC modules. IC Role / Device Role / Timing Role: Standoff-limited TVS array providing primary ESD defense on low-bandwidth sensor data lines with DC bias. Use Value: Prevents field failures caused by operator touch-induced ±8 kV discharges without degrading 100 kbps–1 Mbps signal fidelity. |
| USB 2.0 Full-Speed Port | Motor Control Feedback Lines |
Use Scenario: Supplementing internal USB PHY ESD protection on host/device connectors where external robustness is required per IEC 61000-4-2 Level 4. IC Role / Device Role / Timing Role: Low-capacitance unidirectional clamp on D+ and D− lines, placed after series resistors to minimize impedance mismatch. Use Value: Maintains USB 2.0 full-speed eye diagram compliance while reducing field return rate from ESD-related enumeration failures. | Use Scenario: Safeguarding encoder quadrature A/B and index signals routed from motor feedback sensors to motion controller inputs. IC Role / Device Role / Timing Role: Dual-channel unidirectional TVS protecting differential pair against contact ESD in electrically noisy drive cabinets. Use Value: Eliminates spurious position errors and reset events triggered by ESD coupling into 100 kHz–1 MHz encoder waveforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ESDA6V1L | Same VRM (5.0 V), higher VCL (≤14 V), 15 pF capacitance | Slightly reduced bandwidth margin; less aggressive clamping | Preferred where cost sensitivity outweighs marginal VCL/CI/O trade-off |
| ESDA6V1BC6 | Bidirectional configuration, same VRM/VCL, 10 pF capacitance | Supports AC-coupled or bipolar signal paths (e.g., audio ADC inputs) | Select when protecting signals with negative swing or undefined DC bias |
Compared with ESDA6V1L and ESDA6V1BC6, ESDA6V1-5T6 offers the lowest line capacitance among unidirectional variants and tightest VCL specification - optimal for high-speed, DC-biased debug and control interfaces where signal integrity and clamping precision are critical.
Availability
ESDA6V1-5T6 is available at Aetrix Electronics and suitable for SWD/JTAG debug interfaces, industrial sensor I/O protection, USB 2.0 full-speed ports, and motor encoder feedback lines requiring stable component supply across design-in, prototyping, and volume production phases.
Supply support for ESDA6V1-5T6 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, MEMS, power, and microcontroller solutions for automotive, industrial, and consumer markets.
ESDA6V1-5T6 belongs to ST's ESDA family of transient voltage suppressors, engineered specifically for system-level IEC 61000-4-2 ESD protection in space-constrained, high-reliability embedded applications.
FAQ
Is ESDA6V1-5T6 compatible with 3.3 V and 5 V I/O systems?
Yes. With a 5.0 V VRM and 6.1 V VBR, ESDA6V1-5T6 safely operates on both 3.3 V and 5 V logic rails without premature conduction. Its clamping voltage remains ≤12 V under 16 A TLP stress, well below the 20 V absolute maximum rating typical of modern MCU I/O pins.
What is the recommended PCB layout for optimal ESD performance?
Place ESDA6V1-5T6 within 3 mm of the protected connector, route protected traces directly to pins 1 and 3, connect pins 2, 4, and 6 to a solid ground plane via multiple vias, and avoid routing other signals under the device body to minimize parasitic inductance and coupling.
Does ESDA6V1-5T6 require external series resistance?
No external series resistor is required for basic ESD protection. However, adding a 0 Ω or low-value (e.g., 10–33 Ω) resistor between the protected line and ESDA6V1-5T6 pin 1 can improve high-frequency filtering and reduce ringing during fast transients without compromising clamping speed.
How does ESDA6V1-5T6 differ from TVS diodes used on power rails?
Unlike power-rail TVS devices (e.g., SMAJ series), ESDA6V1-5T6 is optimized for signal-line protection: lower capacitance (12 pF vs. >100 pF), faster response (<1 ns vs. ~10 ns), and tighter clamping (≤12 V vs. ≥20 V), enabling use on high-speed, low-voltage data lines without signal degradation.
ESDA6V1-5T6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 6-UFDFN
- Series:
- ESDA, TRANSIL™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 5
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3V
- Voltage - Breakdown (Min):
- 6.1V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 35W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-MicroDFN (1x1)
ESDA6V1-5T6 FAQ
1.How can I place an order for ESDA6V1-5T6 through Aetrix?
Please submit a Request for Quotation (RFQ) for ESDA6V1-5T6 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 ESDA6V1-5T6 reliable?
The price and inventory of ESDA6V1-5T6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ESDA6V1-5T6 is usually 5 days.
3.What payment methods are accepted for ESDA6V1-5T6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ESDA6V1-5T6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ESDA6V1-5T6?
ESDA6V1-5T6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ESDA6V1-5T6 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 ESDA6V1-5T6?
For technical support, including ESDA6V1-5T6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ESDA6V1-5T6 requirements.
6.How does Aetrix verify that ESDA6V1-5T6 is sourced from the original manufacturer or authorized distributors?
All ESDA6V1-5T6 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 ESDA6V1-5T6 meets industry standards.
7.What is the process for return or replacement of ESDA6V1-5T6?
All ESDA6V1-5T6 units undergo pre-shipment inspection (PSI). If there is an issue with ESDA6V1-5T6, 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 ESDA6V1-5T6 part is unused and in its original packaging.
Return procedure for ESDA6V1-5T6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ESDA6V1-5T6 Tags
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onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Diodes Incorporated
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