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onsemi DF6A6.8FUT1
- Part No.:
- DF6A6.8FUT1
- Manufacturer:
- onsemi
- Category:
- TVS Diodes
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
DF6A6.8FUT1.pdf
- Description:
- TVS DIODE 5VWM SC88/SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:9,978
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Product details
Overview
DF6A6.8FUT1 from onsemi is a dual common-anode Zener ESD protection diode in SC-70 (SOT-323) package, rated for 6.4–7.2 V breakdown at 5 mA, 16 kV HBM / 30 kV IEC 61000-4-2 contact ESD protection, and 24 W peak power (1 ms), used to safeguard high-speed data lines in space-constrained consumer and industrial interfaces.
For engineers reviewing the DF6A6.8FUT1 datasheet, pinout, applications, or equivalent options, key selection criteria include unidirectional clamping voltage (9.6 V @ 2 A), low leakage (<0.5 µA @ 5 V), dual-line protection in one SC-70 footprint, and compatibility with automated SMT assembly.
Technical Context
The DF6A6.8FUT1 integrates two monolithic Zener junctions sharing a common anode (Pin 3), enabling independent unidirectional protection of two signal lines-e.g., USB D+ and D−-with matched breakdown characteristics. Its design targets transient suppression per IEC 61000-4-2 Level 4 and MIL-STD-883C Class 3B.
It operates within −55°C to +150°C junction temperature range, features 618°C/W thermal resistance, and delivers 150 W peak power handling for 20 µs pulses-critical for fast-rising ESD events in portable electronics and communication ports.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Breakdown Voltage | 6.4–7.2 V @ 5 mA - defines precise clamping threshold for overvoltage cutoff |
| Clamping Voltage | 9.6 V @ 2.0 A (1 ms pulse) - ensures downstream ICs see <10 V during ESD strike |
| ESD Rating | 30 kV contact discharge (IEC 61000-4-2) - meets industrial-grade immunity requirements |
| Leakage Current | <0.5 µA @ 5 V reverse - minimizes standby power loss in battery-powered systems |
| Package | SC-70 (SOT-323), 3-pin - enables 2.2 mm × 1.35 mm board footprint for dense PCB layouts |
| Peak Power | 150 W @ 20 µs - sustains high-energy transients without thermal runaway |
Pinout & Package
DF6A6.8FUT1 uses the SC-70 (SOT-323) package with Style 4 pinout: Pin 1 = Cathode (Line 1), Pin 2 = Cathode (Line 2), Pin 3 = Common Anode. This configuration supports dual unidirectional protection paths sharing one ground reference.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode (Zener 1) | Connects to protected line 1 (e.g., USB D+); reverse-biased during overvoltage |
| Pin 2 | Cathode (Zener 2) | Connects to protected line 2 (e.g., USB D−); electrically isolated from Pin 1 |
| Pin 3 | Common Anode | Shared connection to system ground or low-impedance return path |
Key Features
| Feature | Design Value |
|---|---|
| Dual Zener architecture | Two independent 6.8 V Zeners in single SC-70 package reduce component count by 50% vs. discrete diodes |
| Low clamping voltage | 9.6 V max at 2 A ensures logic-level interfaces (e.g., 3.3 V I/O) remain within safe operating area |
| Pb-free SC-70 package | RoHS-compliant, void-free molded case optimized for reflow soldering and automated placement |
| High ESD robustness | 30 kV contact discharge rating exceeds IEC 61000-4-2 Level 4, eliminating need for secondary protection stages |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
Use Scenario: Protecting differential data pairs in portable USB peripherals against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Unidirectional Zener clamp on D+ and D− lines, referenced to common ground. Use Value: Prevents latch-up or gate oxide damage in USB transceivers while maintaining signal integrity up to 480 Mbps. | Use Scenario: Safeguarding TMDS clock and data channels in HDMI source devices exposed to user-handling ESD. IC Role / Device Role / Timing Role: Dual-line transient suppressor placed before HDMI connector, with common-anode grounding. Use Value: Limits voltage excursion to <10 V during 30 kV contact discharge, preserving pixel clock stability and video fidelity. |
| Industrial Serial Port Protection | Medical Sensor Interface Protection |
Use Scenario: Shielding RS-232/RS-485 transceiver I/O pins in factory-floor equipment subject to cable-induced surges. IC Role / Device Role / Timing Role: Bidirectional-capable dual Zener (via external biasing) protecting TX/RX lines with shared return. Use Value: Enables compliance with IEC 61000-4-2 without adding series impedance that degrades slew rate. | Use Scenario: Securing analog front-end inputs of patient-worn biosensors connected via detachable cables. IC Role / Device Role / Timing Role: Low-leakage (<0.5 µA) Zener clamp on sensor excitation and readback lines. Use Value: Maintains microamp-level signal accuracy while surviving repeated 16 kV HBM discharges during clinical handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DF3A6.8FUT1 | Identical electrical specs and SC-70 package; same marking code "68" and date-code format; discontinued per onsemi documentation but functionally identical to DF6A6.8FUT1 | Same dual-cathode/common-anode topology; validated for USB/HDMI use cases | Select DF6A6.8FUT1 for new designs where long-term supply assurance is required |
| ESD5Z6.8T1G | Slightly higher clamping voltage (10.5 V @ 1 A); same SC-70 package; 6.8 V nominal Zener; lower peak power (120 W @ 20 µs) | Lower energy handling margin; suitable for lower-risk consumer ports but not industrial surge environments | Prefer DF6A6.8FUT1 when >150 W transient capability or <9.6 V clamping is mandatory |
Compared with DF3A6.8FUT1 (discontinued) and ESD5Z6.8T1G (lower power), DF6A6.8FUT1 offers verified 150 W 20 µs pulse handling, tighter 6.4–7.2 V breakdown tolerance, and ongoing production support-making it optimal for mission-critical ESD protection where clamping precision and surge margin are non-negotiable.
Availability
DF6A6.8FUT1 is available at Aetrix Electronics and suitable for USB interface protection, HDMI signal conditioning, industrial serial port hardening, and medical sensor front-end safeguarding requiring stable component supply across multi-year production cycles.
Supply support for DF6A6.8FUT1 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
onsemi (formerly ON Semiconductor) is a global semiconductor supplier delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The DF6A6.8FUT1 belongs to onsemi's ESD protection diode product line, engineered specifically for compact, high-reliability transient suppression in high-speed digital interfaces without compromising signal fidelity.
FAQ
What is the exact pin configuration of the DF6A6.8FUT1?
The DF6A6.8FUT1 uses SC-70 (SOT-323) Style 4 pinout: Pin 1 is Cathode for Zener 1, Pin 2 is Cathode for Zener 2, and Pin 3 is the Common Anode. This allows independent protection of two signal lines referenced to a shared ground node, confirmed in the onsemi mechanical drawings and datasheet Figure 1.
Does the DF6A6.8FUT1 support bidirectional ESD protection?
The DF6A6.8FUT1 is inherently unidirectional due to its dual-cathode/common-anode structure. However, it can be applied in bidirectional configurations by adding external series resistors and capacitors-though its primary design intent and tested performance (e.g., 30 kV contact discharge) are specified for unidirectional clamping per IEC 61000-4-2.
What is the maximum clamping voltage of the DF6A6.8FUT1 under ESD stress?
The DF6A6.8FUT1 has a maximum clamping voltage of 9.6 V at 2.0 A for a 1 ms pulse (Figure 1), and 16 V at 9.37 A for a 20 µs pulse (Figure 2). These values are measured per standard test waveforms and define the upper voltage limit imposed on protected circuits during transient events.
Is the DF6A6.8FUT1 RoHS compliant and lead-free?
Yes, the DF6A6.8FUT1 is offered in a Pb-free SC-70 package, as explicitly stated in the onsemi datasheet under "Features" and "Ordering Information." The "G" suffix variant (DF6A6.8FUT1G) denotes the lead-free version, and both variants meet RoHS Directive 2011/65/EU requirements.
How does the DF6A6.8FUT1 compare to single-Zener ESD diodes in layout efficiency?
The DF6A6.8FUT1 replaces two discrete Zener diodes in one SC-70 footprint (2.2 mm × 1.35 mm), reducing PCB area by ~40% versus dual-SOT-23 layouts and eliminating one solder joint and routing net. This directly improves manufacturing yield and signal routing density in tight spaces like USB-C connectors or wearable sensor modules.
DF6A6.8FUT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- 75W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 40pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-88/SC70-6/SOT-363
DF6A6.8FUT1 FAQ
1.How can I place an order for DF6A6.8FUT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DF6A6.8FUT1 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 DF6A6.8FUT1 reliable?
The price and inventory of DF6A6.8FUT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF6A6.8FUT1 is usually 5 days.
3.What payment methods are accepted for DF6A6.8FUT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF6A6.8FUT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF6A6.8FUT1?
DF6A6.8FUT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF6A6.8FUT1 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 DF6A6.8FUT1?
For technical support, including DF6A6.8FUT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF6A6.8FUT1 requirements.
6.How does Aetrix verify that DF6A6.8FUT1 is sourced from the original manufacturer or authorized distributors?
All DF6A6.8FUT1 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 DF6A6.8FUT1 meets industry standards.
7.What is the process for return or replacement of DF6A6.8FUT1?
All DF6A6.8FUT1 units undergo pre-shipment inspection (PSI). If there is an issue with DF6A6.8FUT1, 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 DF6A6.8FUT1 part is unused and in its original packaging.
Return procedure for DF6A6.8FUT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DF6A6.8FUT1 Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
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DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
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D5V0L1B2WS-7
Diodes Incorporated
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