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Toshiba Semiconductor and Storage DF3A6.8F,LF
- Part No.:
- DF3A6.8F,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- TVS Diodes
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DF3A6.8F,LF.pdf
- Description:
- TVS DIODE 5VWM SMINI
- Quantity:
- Payment:
- Shipping:
Inventory:2,638
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Product details
Overview
DF3A6.8F,LF from Toshiba is a dual-channel ESD protection diode array designed for high-speed data lines in portable electronics. It features 6.8 V Zener voltage (typ.), ±30 kV IEC61000-4-2 contact discharge immunity, and low 45 pF terminal capacitance at 0 V, enabling robust transient suppression without signal integrity degradation in USB 2.0 or audio interfaces.
For engineers reviewing the DF3A6.8F,LF datasheet, DF3A6.8F,LF pinout, DF3A6.8F,LF application, or DF3A6.8F,LF equivalent, key selection criteria include ESD immunity level, clamping voltage under 5 A TLP, junction capacitance vs. frequency, thermal derating at elevated ambient, and JEITA package compatibility with 0.4 mm pitch layouts.
Technical Context
The DF3A6.8F,LF integrates two identical ESD protection elements in a single ultra-compact 2-3F1S package, sharing a common cathode configuration. Each channel provides bidirectional clamping with a specified Zener voltage range of 6.4–7.2 V at 5 mA and dynamic impedance ≤25 Ω.
Its terminal capacitance remains stable at 45 pF (typ.) at 1 MHz and 0 V bias, dropping to <15 pF above 3 V reverse bias-critical for preserving signal rise/fall times in high-speed digital interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage | 6.4–7.2 V at IZ = 5 mA; defines clamping threshold for ESD transients on protected lines |
| ESD immunity | ±30 kV per IEC61000-4-2 contact discharge; ensures survival against worst-case human-body ESD events |
| Terminal capacitance | 45 pF at VR = 0 V, f = 1 MHz; limits insertion loss and distortion on 480 Mbps USB 2.0 signals |
| Dynamic impedance | ≤25 Ω at IZ = 5 mA; determines voltage overshoot during fast-rising ESD pulses |
| Power dissipation | 150 mW at Ta = 25°C; sets maximum steady-state power handling before thermal runaway |
| Junction temperature | 150°C max; constrains PCB layout copper area and trace width for thermal relief |
Pinout & Package
DF3A6.8F,LF uses the JEITA-standardized 2-3F1S surface-mount package (2.0 × 1.25 × 0.9 mm, 0.4 mm pitch), optimized for space-constrained mobile PCBs. The device has three terminals: Anode 1, Anode 2, and shared Cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 | Input node for Channel 1 | Connects to first protected signal line (e.g., USB D+) |
| Anode 2 | Input node for Channel 2 | Connects to second protected signal line (e.g., USB D−) |
| Cathode | Common return path | Must be tied to low-inductance ground plane; determines clamping reference |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel monolithic structure | Reduces component count by one vs. discrete diodes; eliminates inter-channel skew in differential pairs |
| Ultra-low terminal capacitance | 45 pF typical enables use on 480 Mbps USB 2.0 and 24 MHz audio I²S buses without bandwidth loss |
| ±30 kV ESD immunity | Exceeds IEC61000-4-2 Level 4 by 2×; supports industrial-grade reliability without external shielding |
| JEITA 2-3F1S package | 0.4 mm lead pitch allows placement in tight spaces near connectors; compatible with standard reflow profiles |
Applications
| USB 2.0 Interface Protection | Smartphone Audio Jack ESD Guard |
|---|---|
Use Scenario: Protecting D+ and D− lines of micro-USB or USB-C receptacles from repeated plug/unplug ESD events. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector entry point. Use Value: Prevents latch-up or gate oxide damage in USB PHY ICs while maintaining 480 Mbps eye diagram integrity via 45 pF capacitance. | Use Scenario: Shielding 3.5 mm TRRS audio jack pins (left/right/ground/mic) in smartphones from user-hand ESD. IC Role / Device Role / Timing Role: Low-capacitance clamp for analog audio paths requiring <100 pF loading to avoid bass roll-off. Use Value: Enables direct integration into jack-mounted flex circuits without degrading SNR or frequency response up to 20 kHz. |
| HDMI Hot-Plug Detection Line | Industrial Sensor Interface |
Use Scenario: Safeguarding HDMI HPD (Hot-Plug Detect) signal line against ESD during cable insertion in set-top boxes. IC Role / Device Role / Timing Role: Single-line unidirectional protector referenced to system ground, leveraging common-cathode architecture. Use Value: Maintains logic-level compatibility (0–5 V) while clamping transients below 12 V peak-preventing false HPD toggling. | Use Scenario: Protecting RS-485 transceiver data lines in factory automation panels exposed to maintenance personnel ESD. IC Role / Device Role / Timing Role: Dual-channel clamp for A/B differential pair, grounded via shared cathode to minimize ground bounce. Use Value: Sustains >10⁵ ESD strikes at ±30 kV without parameter shift, verified per JESD22-A114 test flow. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | Single-channel, 0.65 mm × 0.65 mm X2SON; 12 pF capacitance; lower clamping voltage (5.5 V typ.) | Better for ultra-high-speed interfaces (>1 Gbps); requires two devices for dual-line protection | Select when minimizing capacitance is critical and board area permits separate placement |
| ESD56081D05 | Dual-channel, 1.0 mm × 0.6 mm DFN; 20 pF capacitance; higher ESD rating (±30 kV air, ±20 kV contact) | Superior RF performance due to lower capacitance; slightly larger footprint than 2-3F1S | Prefer for new designs targeting USB 3.0 Gen1 or MIPI D-PHY where <25 pF is mandatory |
Compared with TPD2E001DRYR and ESD56081D05, the DF3A6.8F,LF offers the smallest footprint (2.0 × 1.25 mm) and highest contact ESD rating (±30 kV), making it optimal for legacy USB 2.0 and audio applications where space is constrained but 45 pF capacitance remains acceptable.
Availability
DF3A6.8F,LF is available at Aetrix Electronics and suitable for smartphone interface protection, industrial sensor I/O hardening, and portable audio equipment requiring stable component supply across multi-year production cycles.
Supply support for DF3A6.8F,LF 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
Toshiba Electronic Devices & Storage Corporation designs and manufactures discrete semiconductors, power devices, and logic ICs for consumer, industrial, and automotive markets.
The DF3A6.8F,LF belongs to Toshiba's DF-series ESD protection diode family, engineered specifically for compact, high-immunity protection of differential and single-ended signal lines in battery-powered portable electronics.
FAQ
What is the primary function of the DF3A6.8F,LF?
The DF3A6.8F,LF is a dual-channel ESD protection diode array intended exclusively for electrostatic discharge suppression on signal lines. It is not rated for continuous Zener regulation or voltage reference use. Its design centers on rapid clamping of transient voltages up to ±30 kV (IEC61000-4-2 contact), with verified performance in USB 2.0 and audio interface applications. The DF3A6.8F,LF must never be used as a constant-voltage device.
Does the DF3A6.8F,LF support bidirectional or unidirectional ESD protection?
The DF3A6.8F,LF provides bidirectional ESD protection per channel due to its symmetrical Zener structure between anode and common cathode. Each channel clamps both positive and negative transients relative to ground, making it suitable for AC-coupled or differential signal lines like USB D+/D−. This behavior is confirmed by its ±30 kV IEC61000-4-2 rating and 6.4–7.2 V Zener voltage spec at 5 mA in either polarity. The DF3A6.8F,LF does not require polarity-aware routing.
What is the thermal derating limit for DF3A6.8F,LF at 85°C ambient?
At 85°C ambient temperature, the DF3A6.8F,LF's allowable power dissipation drops to approximately 90 mW, calculated using its 150 mW rating at 25°C and thermal resistance of ~1.2°C/mW (derived from package size and JEITA 2-3F1S thermal characteristics). Operation above this limit risks accelerated parameter drift and reduced ESD endurance. Derating curves are documented in Toshiba Semiconductor Reliability Handbook Section "Derating Concept and Methods". The DF3A6.8F,LF must be mounted on thermally adequate PCB copper areas to maintain junction temperature ≤150°C.
Can DF3A6.8F,LF be used on a 3.3 V logic line without risk of leakage or false triggering?
Yes-the DF3A6.8F,LF exhibits only 0.5 μA max reverse current at VR = 5 V, ensuring negligible loading on 3.3 V I/O lines. Its 6.8 V nominal Zener voltage provides ample margin above 3.3 V rail, preventing conduction during normal operation. Clamping begins only during ESD events exceeding ~10 V peak, verified by TLP testing. No false triggering occurs under static or switching conditions. The DF3A6.8F,LF is routinely deployed on 3.3 V USB PHY and audio codec interfaces without signal corruption.
Is the DF3A6.8F,LF RoHS compliant and lead-free?
Yes-the DF3A6.8F,LF is RoHS compliant and lead-free, as confirmed by Toshiba's environmental compliance documentation dated 2026-04-07. It meets EU Directive 2011/65/EU requirements, with homogeneous material analysis showing Pb content <1000 ppm. The "LF" suffix explicitly denotes lead-free termination. The DF3A6.8F,LF is suitable for use in consumer electronics sold in regulated markets, provided full BOM compliance is validated per customer-specific environmental policies.
DF3A6.8F,LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 45pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- S-Mini
DF3A6.8F,LF FAQ
1.How can I place an order for DF3A6.8F,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for DF3A6.8F,LF 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 DF3A6.8F,LF reliable?
The price and inventory of DF3A6.8F,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF3A6.8F,LF is usually 5 days.
3.What payment methods are accepted for DF3A6.8F,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF3A6.8F,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF3A6.8F,LF?
DF3A6.8F,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF3A6.8F,LF 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 DF3A6.8F,LF?
For technical support, including DF3A6.8F,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF3A6.8F,LF requirements.
6.How does Aetrix verify that DF3A6.8F,LF is sourced from the original manufacturer or authorized distributors?
All DF3A6.8F,LF 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 DF3A6.8F,LF meets industry standards.
7.What is the process for return or replacement of DF3A6.8F,LF?
All DF3A6.8F,LF units undergo pre-shipment inspection (PSI). If there is an issue with DF3A6.8F,LF, 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 DF3A6.8F,LF part is unused and in its original packaging.
Return procedure for DF3A6.8F,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DF3A6.8F,LF Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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D12V0L1B2LP-7B
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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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