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Toshiba Semiconductor and Storage DF3D6.8MS,LF
- Part No.:
- DF3D6.8MS,LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- TVS Diodes
- Package:
- SC-75, SOT-416
- Datasheet:
-
DF3D6.8MS,LF.pdf
- Description:
- TVS DIODE 5VWM 11VC SSM
- Quantity:
- Payment:
- Shipping:
Inventory:24,290
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Product details
Overview
DF3D6.8MS,LF from Toshiba is an ESD protection diode in a 3-pin SSM (2-2H1S) package, designed for bidirectional I/O line protection with ±8 kV IEC61000-4-2 contact ESD immunity, 5 V working peak reverse voltage, and 11 V typical clamp voltage at 1 A peak pulse current. It serves as a low-capacitance transient suppressor on high-speed data lines such as USB 2.0 and HDMI interfaces.
For engineers reviewing the DF3D6.8MS,LF datasheet, DF3D6.8MS,LF pinout, DF3D6.8MS,LF application, or DF3D6.8MS,LF equivalent, key selection criteria include I/O-to-GND capacitance (0.5 pF typ.), dynamic resistance (0.22 Ω typ.), guaranteed ±8 kV ESD rating, and SSM package compatibility with space-constrained portable electronics layouts.
Technical Context
The DF3D6.8MS,LF employs a silicon epitaxial planar structure optimized for fast response to electrostatic transients. Its internal configuration consists of two back-to-back Zener diodes between I/O pins and GND, enabling symmetrical clamping for both positive and negative ESD events without polarity dependence.
It operates exclusively as a transient voltage suppression device-not for regulation or steady-state conduction-and is characterized under IEC61000-4-2 (contact) and IEC61000-4-5 (8/20 µs) test conditions. Junction temperature must remain ≤150 °C, and storage range is −55 °C to +150 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating (IEC61000-4-2) | ±8 kV contact discharge - meets industrial-grade ESD immunity requirements for handheld and peripheral interfaces |
| Working Peak Reverse Voltage (VRWM) | 5 V - supports signal lines operating up to 5 V logic levels without leakage or conduction |
| Clamp Voltage (VC) | 11 V max at IPP = 1 A - limits transient voltage to safe levels for downstream 3.3 V or 5 V ICs |
| I/O-to-GND Capacitance (Ct-GND) | 0.5 pF max - preserves signal integrity on high-speed lines (e.g., USB 2.0, HDMI, SDIO) |
| Dynamic Resistance (RDYN) | 0.22 Ω typ. - ensures rapid energy shunting with minimal voltage overshoot during ESD events |
| Reverse Current (IR) | 0.5 µA max at VRWM = 5 V - guarantees negligible standby power loss and signal loading |
| Junction Temperature Range | −55 °C to +150 °C - suitable for automotive cabin and industrial ambient environments |
Pinout & Package
DF3D6.8MS,LF uses the SSM (Toshiba 2-2H1S) surface-mount package: ultra-compact 1.6 × 1.6 × 0.55 mm, 3-terminal, lead-free, and RoHS-compliant. Weight is 2.4 mg (typ.).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | I/O 1 | Primary protected signal line input/output - connects to data line (e.g., USB D+, HDMI TMDS+) |
| 2 | I/O 2 | Secondary protected signal line input/output - used for differential pair protection or dual-line applications |
| 3 | GND | Common reference and transient return path - must be connected to low-impedance system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD Clamping | Symmetrical ±8 kV IEC61000-4-2 protection on both I/O pins relative to GND - eliminates need for polarity-aware placement |
| Ultra-Low Capacitance | 0.5 pF max per I/O-to-GND path - minimizes signal distortion and insertion loss on >480 Mbps links |
| Low Dynamic Resistance | 0.22 Ω typ. - reduces clamping voltage overshoot and improves energy dissipation efficiency |
| SSM Package Footprint | 1.6 × 1.6 mm outline with 0.55 mm height - enables high-density routing in smartphones, wearables, and compact IoT modules |
| Lead-Free & RoHS Compliant | Meets JEDEC J-STD-020 reflow profile - compatible with standard Pb-free assembly processes |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines in smartphone USB ports against user-handling ESD events. IC Role / Device Role: Bidirectional transient voltage suppressor placed directly at connector entry point. Use Value: Prevents latch-up or damage to USB PHY ICs while maintaining <1% signal attenuation at 480 MHz. |
Use Scenario: Shielding TMDS+ and TMDS− channels in portable media players from ESD during cable insertion. IC Role / Device Role: Low-capacitance clamp between differential data lines and chassis ground. Use Value: Ensures HDMI compliance with <0.3 dB insertion loss at 2.25 GHz and passes IEC61000-4-2 ±8 kV testing. |
| SD Card Slot ESD Guard | Industrial Sensor Interface Protection |
Use Scenario: Securing CMD, CLK, and DAT[0:3] lines in embedded SD card sockets exposed to field maintenance personnel. IC Role / Device Role: Per-signal-line ESD suppressor mounted adjacent to card edge connector. Use Value: Enables robust operation in ungrounded consumer devices with no degradation in 25 MB/s read/write performance. |
Use Scenario: Safeguarding RS-485 or CAN FD transceiver I/O pins in factory automation gateways subjected to frequent operator contact. IC Role / Device Role: Ground-referenced transient limiter on half-duplex communication lines. Use Value: Maintains signal fidelity under harsh ESD stress while supporting −40 °C to +85 °C extended temperature operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor ESD9X5.0ST5G | Higher I/O-to-GND capacitance (1.0 pF max), same ±8 kV rating, SOD-923 package (1.0 × 0.6 mm) | Less suitable for >200 MHz signals due to doubled capacitance; better for cost-sensitive, lower-speed GPIO protection | Select when board space is tighter than signal bandwidth requirements, and 5 V VRWM suffices |
| Vishay VEML6030X01 | Not applicable - this is an ambient light sensor, not an ESD diode; excluded from valid alternatives | N/A | Not a functional alternative - omitted due to category mismatch |
Compared with DF3D6.8MS,LF, the ESD9X5.0ST5G trades 0.5 pF lower capacitance for smaller footprint but sacrifices high-frequency signal integrity; no validated pin-compatible ESD suppressor matches DF3D6.8MS,LF's combination of 0.5 pF, ±8 kV, and SSM package - making it uniquely suited for miniaturized high-speed interface protection.
Availability
DF3D6.8MS,LF is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI signal line safeguarding, and SD card slot ESD mitigation requiring stable component supply across consumer electronics, industrial HMI, and portable medical device programs.
Supply support for DF3D6.8MS,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, with emphasis on reliability, miniaturization, and energy efficiency for global electronics markets.
The DF3D6.8MS,LF belongs to Toshiba's DF3D series of ultra-low-capacitance ESD protection diodes, engineered specifically for high-speed digital interfaces where signal fidelity and board space are critical constraints.
FAQ
What is the maximum clamping voltage of DF3D6.8MS,LF at 1 A peak pulse current?
The DF3D6.8MS,LF has a maximum clamp voltage (VC) of 11 V when subjected to a 1 A peak pulse current per IEC61000-4-5 8/20 µs waveform. This value ensures downstream 3.3 V or 5 V logic components remain within safe operating voltage margins during ESD events. The typical VC is lower, but design margining must use the 11 V max specification for worst-case analysis.
Is DF3D6.8MS,LF suitable for protecting USB 3.0 or PCIe Gen2 signals?
No, DF3D6.8MS,LF is not recommended for USB 3.0 or PCIe Gen2. Its 0.5 pF I/O-to-GND capacitance is optimized for ≤480 Mbps interfaces like USB 2.0 and HDMI 1.4; higher-speed protocols require sub-0.3 pF devices to avoid signal integrity degradation. DF3D6.8MS,LF's electrical characteristics and validation are explicitly specified for IEC61000-4-2 and IEC61000-4-5, not high-frequency jitter or eye-diagram compliance.
Does DF3D6.8MS,LF support bidirectional ESD protection on a single I/O line?
Yes, DF3D6.8MS,LF provides true bidirectional protection between each I/O pin and GND. Pins 1 and 2 are functionally identical and independently clamp to Pin 3 (GND) for both positive and negative transients - enabling use on single-ended lines (e.g., UART TX) by connecting one I/O pin to signal and the other to GND, or on differential pairs by using both I/O pins with shared GND.
What is the thermal limit for continuous operation of DF3D6.8MS,LF?
The DF3D6.8MS,LF has a maximum junction temperature (Tj) of 150 °C and a storage temperature range of −55 °C to +150 °C. It is not rated for continuous forward or reverse current conduction; its design purpose is transient suppression only. Sustained DC bias above VRWM = 5 V or ambient temperatures exceeding 85 °C require derating per Toshiba's Reliability Handbook to maintain long-term reliability.
Can DF3D6.8MS,LF replace a TVS diode array like SMAJ5.0A in power rail protection?
No, DF3D6.8MS,LF is not intended for power rail protection. It is rated for signal-line ESD suppression only, with a 5 V VRWM and no surge current rating beyond 1 A (IEC61000-4-5). SMAJ5.0A handles 400 W peak pulse power and 64.5 A IPP - orders of magnitude higher. Using DF3D6.8MS,LF on power rails risks catastrophic failure due to insufficient energy handling capability.
DF3D6.8MS,LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package/Case:
- SC-75, SOT-416
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 11V (Typ)
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.5pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SSM
DF3D6.8MS,LF FAQ
1.How can I place an order for DF3D6.8MS,LF through Aetrix?
Please submit a Request for Quotation (RFQ) for DF3D6.8MS,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 DF3D6.8MS,LF reliable?
The price and inventory of DF3D6.8MS,LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF3D6.8MS,LF is usually 5 days.
3.What payment methods are accepted for DF3D6.8MS,LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF3D6.8MS,LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF3D6.8MS,LF?
DF3D6.8MS,LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF3D6.8MS,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 DF3D6.8MS,LF?
For technical support, including DF3D6.8MS,LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF3D6.8MS,LF requirements.
6.How does Aetrix verify that DF3D6.8MS,LF is sourced from the original manufacturer or authorized distributors?
All DF3D6.8MS,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 DF3D6.8MS,LF meets industry standards.
7.What is the process for return or replacement of DF3D6.8MS,LF?
All DF3D6.8MS,LF units undergo pre-shipment inspection (PSI). If there is an issue with DF3D6.8MS,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 DF3D6.8MS,LF part is unused and in its original packaging.
Return procedure for DF3D6.8MS,LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DF3D6.8MS,LF Tags
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