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Toshiba Semiconductor and Storage DF2S8.2ASL,L3F
- Part No.:
- DF2S8.2ASL,L3F
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- TVS Diodes
- Package:
- 2-SMD, No Lead
- Datasheet:
-
DF2S8.2ASL,L3F.pdf
- Description:
- TVS DIODE 6.5VWM SL2
- Quantity:
- Payment:
- Shipping:
Inventory:8,740
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Product details
Overview
DF2S8.2ASL,L3F from Toshiba Electronic Devices & Storage Corporation is a bidirectional ESD protection diode in SL2 (1-1AL1A) package, rated for ±30 kV IEC61000-4-2 contact discharge, 8.2 V zener voltage at 5 mA, 22 V clamping voltage at 2.5 A, and 20 pF capacitance at 0 V - deployed on high-speed USB 2.0 data lines to suppress transient surges.
For engineers reviewing the DF2S8.2ASL,L3F datasheet, DF2S8.2ASL,L3F pinout, DF2S8.2ASL,L3F application, or DF2S8.2ASL,L3F equivalent, key selection criteria include IEC61000-4-2/4-5 compliance, low clamping voltage under 2.5 A pulse, sub-25 pF signal-line capacitance, and SL2 footprint compatibility with space-constrained portable interfaces.
Technical Context
The DF2S8.2ASL,L3F implements a silicon epitaxial planar Zener structure optimized for fast response to ESD transients. Its bidirectional configuration enables symmetric clamping of positive and negative pulses without polarity dependency, and its low dynamic impedance (≤30 Ω) ensures stable voltage limiting during 8/20 µs surge events.
Designed exclusively for electrostatic discharge protection, it lacks voltage regulation capability and is not rated for continuous reverse bias beyond VRWM = 6.5 V. Its 20 pF total capacitance and 0.8 Ω dynamic resistance support signal integrity preservation on 480 Mbps USB 2.0 channels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ESD Rating (IEC61000-4-2) | ±30 kV contact - meets highest industrial ESD immunity requirement for handheld device ports |
| Zener Voltage (VZ) | 8.2 V at 5 mA - defines precise clamping threshold for overvoltage protection |
| Clamp Voltage (VC) | 22 V at IPP = 2.5 A - limits peak line voltage during surge to protect downstream PHY ICs |
| Total Capacitance (Ct) | 20 pF at VR = 0 V, f = 1 MHz - preserves signal rise/fall time on USB 2.0 differential pairs |
| Working Peak Reverse Voltage (VRWM) | 6.5 V - maximum steady-state reverse voltage before leakage exceeds 0.5 µA |
| Peak Pulse Power (PPK) | 2.5 W at tp = 8/20 µs - sustains single high-energy ESD event without degradation |
| Dynamic Resistance (RDYN) | 0.8 Ω - minimizes voltage overshoot during fast TLP pulses (8–16 A range) |
Pinout & Package
DF2S8.2ASL,L3F is housed in the SL2 surface-mount package (Toshiba designation: 1-1AL1A), measuring 1.0 × 0.6 × 0.35 mm with 0.2 mg typical weight. The package supports reflow soldering and is optimized for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Anode of internal Zener junction; connects to protected line in bidirectional configuration |
| 2 | Anode | Cathode of internal Zener junction; ties to GND or common reference plane |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD Clamping | Enables symmetric protection on AC-coupled or differential signal lines without polarity constraints |
| Low 20 pF Capacitance | Maintains <10% signal attenuation at 240 MHz (USB 2.0 fundamental), preserving eye diagram integrity |
| 0.8 Ω Dynamic Resistance | Reduces voltage overshoot by >40% vs. higher-RDYN diodes under identical 16 A TLP stress |
| SL2 Footprint Compatibility | Matches JEDEC MO-203-AB standard; enables drop-in replacement in existing 0402-equivalent layouts |
| ±30 kV IEC61000-4-2 Rating | Exceeds Level 4 immunity requirement, eliminating need for secondary protection stages |
Applications
| USB 2.0 Data Lines | HDMI DDC/CEC Channels |
|---|---|
Use Scenario: Protecting D+ and D− pins of USB 2.0 transceivers in smartphones and tablets against user-handling ESD. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector interface. Use Value: 20 pF capacitance avoids signal distortion at 480 Mbps; 22 V clamp prevents PHY latch-up or damage. | Use Scenario: Safeguarding HDMI DDC (I²C) and CEC control lines from ESD during cable insertion/removal. IC Role / Device Role / Timing Role: Low-capacitance shunt protector between SDA/SCL and GND. Use Value: 6.5 V VRWM aligns with 3.3 V I²C bus voltage; ±30 kV rating covers worst-case human-body model events. |
| Mobile Audio Jacks | SD Card Interface Lines |
Use Scenario: Shielding 3.5 mm audio jack tip/ring contacts in wearables and earbuds from repeated plug/unplug ESD. IC Role / Device Role / Timing Role: Dual-line ESD suppressor mounted adjacent to jack footprint. Use Value: SL2 size fits tight mechanical clearances; 0.2 mg weight avoids flexure stress on thin PCBs. | Use Scenario: Securing SDIO command, clock, and data lines in embedded cameras and IoT edge devices. IC Role / Device Role / Timing Role: Point-of-entry protection before SD host controller input buffers. Use Value: 2.5 W pulse power rating withstands multiple contact discharges without parametric shift. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD2E001DRYR | Unidirectional; 5.5 V VRWM; 15 pF; 12 V clamp @ 1 A | Requires separate devices per signal line; lower capacitance but asymmetric protection | Select when protecting single-ended 3.3 V logic with strict <15 pF budget |
| ESD9X5.0ST5G | Bidirectional; 5.0 V VRWM; 30 pF; 17 V clamp @ 2.5 A | Higher capacitance limits use to ≤100 Mbps interfaces; wider voltage margin below VCC | Prefer for cost-sensitive 10/100 Ethernet or UART lines where speed is secondary |
Compared with TPD2E001DRYR and ESD9X5.0ST5G, the DF2S8.2ASL,L3F uniquely balances bidirectional clamping, 8.2 V VZ alignment with 5 V tolerant I/O, and 20 pF capacitance - making it optimal for USB 2.0 and HDMI auxiliary channel protection where both symmetry and bandwidth matter.
Availability
DF2S8.2ASL,L3F is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI DDC/CEC safeguarding, mobile audio jack ESD suppression, and SD card interface line protection requiring stable component supply across production lifecycles.
Supply support for DF2S8.2ASL,L3F 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 automotive-grade qualification.
The DF2S8.2ASL,L3F belongs to Toshiba's DF2S series of ultra-small ESD protection diodes, engineered specifically for high-speed digital interfaces in portable consumer electronics where board space and signal fidelity are critical constraints.
FAQ
What is the maximum working peak reverse voltage for DF2S8.2ASL,L3F?
The DF2S8.2ASL,L3F has a maximum working peak reverse voltage (VRWM) of 6.5 V. This value represents the highest continuous reverse voltage the device can withstand while maintaining leakage current below 0.5 µA. Exceeding this voltage risks premature conduction and potential degradation during normal operation - always verify system rail voltages remain within this limit when using DF2S8.2ASL,L3F in design.
Does DF2S8.2ASL,L3F support bidirectional ESD protection?
Yes, DF2S8.2ASL,L3F provides true bidirectional ESD protection due to its symmetrical Zener-based structure. It clamps both positive and negative transients equally, with identical ±30 kV IEC61000-4-2 contact ratings. This makes DF2S8.2ASL,L3F ideal for AC-coupled or differential signal paths like USB 2.0 D+/D−, where polarity-independent surge suppression is mandatory.
What is the clamping voltage of DF2S8.2ASL,L3F at 2.5 A peak pulse current?
The clamping voltage (VC) of DF2S8.2ASL,L3F is guaranteed at 22 V under a 2.5 A peak pulse current (IPP) condition, per IEC61000-4-5 8/20 µs waveform. This value ensures downstream components see no more than 22 V during surge events - critical for protecting 3.3 V or 5 V logic interfaces. DF2S8.2ASL,L3F achieves this with 0.8 Ω dynamic resistance, minimizing overshoot.
Can DF2S8.2ASL,L3F be used for voltage regulation applications?
No, DF2S8.2ASL,L3F is explicitly designed only for ESD protection and is not intended for voltage regulation. Toshiba's documentation states it "is not intended for any other purpose, including, but not limited to, voltage regulation." Its parameters - such as wide VZ tolerance (7.7–8.7 V), lack of regulation accuracy specs, and absence of thermal stability data - confirm DF2S8.2ASL,L3F must not be substituted for dedicated Zener regulators.
What package type does DF2S8.2ASL,L3F use and what are its dimensions?
DF2S8.2ASL,L3F uses the SL2 package (Toshiba designation: 1-1AL1A), a miniature surface-mount case measuring 1.0 mm × 0.6 mm × 0.35 mm with 0.2 mg typical weight. Its two-terminal configuration and land pattern match JEDEC MO-203-AB, enabling placement in ultra-dense layouts typical of smartphones and wearables - a key advantage of DF2S8.2ASL,L3F in space-constrained designs.
DF2S8.2ASL,L3F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package/Case:
- 2-SMD, No Lead
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.5V (Max)
- Voltage - Breakdown (Min):
- 7.7V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 20pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SL2
DF2S8.2ASL,L3F FAQ
1.How can I place an order for DF2S8.2ASL,L3F through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2S8.2ASL,L3F 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 DF2S8.2ASL,L3F reliable?
The price and inventory of DF2S8.2ASL,L3F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2S8.2ASL,L3F is usually 5 days.
3.What payment methods are accepted for DF2S8.2ASL,L3F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2S8.2ASL,L3F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2S8.2ASL,L3F?
DF2S8.2ASL,L3F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2S8.2ASL,L3F 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 DF2S8.2ASL,L3F?
For technical support, including DF2S8.2ASL,L3F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2S8.2ASL,L3F requirements.
6.How does Aetrix verify that DF2S8.2ASL,L3F is sourced from the original manufacturer or authorized distributors?
All DF2S8.2ASL,L3F 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 DF2S8.2ASL,L3F meets industry standards.
7.What is the process for return or replacement of DF2S8.2ASL,L3F?
All DF2S8.2ASL,L3F units undergo pre-shipment inspection (PSI). If there is an issue with DF2S8.2ASL,L3F, 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 DF2S8.2ASL,L3F part is unused and in its original packaging.
Return procedure for DF2S8.2ASL,L3F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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