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Toshiba Semiconductor and Storage DF2B7PCT,L3F
- Part No.:
- DF2B7PCT,L3F
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- TVS Diodes
- Package:
- SOD-882
- Datasheet:
-
DF2B7PCT,L3F.pdf
- Description:
- BI-DIRECTIONAL ESD PROTECTION DI
- Quantity:
- Payment:
- Shipping:
Inventory:10,086
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Product details
Overview
DF2B7PCT from Toshiba Electronic Devices & Storage Corporation is an ESD protection diode designed for bidirectional I/O line protection in mobile device interfaces. It features a working peak reverse voltage of 5.5 V, ±30 kV IEC61000-4-2 contact ESD rating, 0.1 Ω typical dynamic resistance, 16 V clamping voltage at 27 A, and ultra-compact CST2 (1.0 mm × 0.6 mm) packaging - deployed in smartphone USB/USB-C, HDMI, and audio jack circuits.
For engineers reviewing the DF2B7PCT datasheet, DF2B7PCT pinout, DF2B7PCT application, or DF2B7PCT equivalent, key selection criteria include low clamping voltage under high ESD stress, sub-1 pF total capacitance impact on high-speed signal integrity, snapback-triggered low dynamic resistance, and compatibility with 5.0 V logic rails in space-constrained portable electronics designs.
Technical Context
The DF2B7PCT employs silicon epitaxial planar technology with snapback-triggered TVS behavior to achieve rapid turn-on and low clamping during ESD transients. Its bidirectional structure supports dual-pin I/O protection without polarity constraints, and its TLP-characterized dynamic resistance (0.1 Ω typ.) ensures minimal voltage overshoot during 8/20 µs surge events.
Designed specifically for IEC61000-4-2 compliance, the device operates within a 5.5 V VRWM limit and delivers guaranteed ±30 kV contact/air ESD immunity. The 45 pF typical total capacitance (measured at 0 V, 1 MHz) enables integration into 480 Mbps USB 2.0 and 1080p HDMI signal paths without measurable signal degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 5.5 V - Maximum continuous reverse voltage before leakage exceeds 100 nA; sets upper bound for 5.0 V rail protection. |
| VESD (IEC61000-4-2) | ±30 kV contact - Guarantees survival and functional integrity after worst-case human-body-model ESD strikes. |
| VC @ IPP = 27 A | 16 V (typ.) - Clamping voltage during full-rated 8/20 µs surge; limits downstream IC voltage stress below damage thresholds. |
| RDYN | 0.1 Ω (typ.) - Low dynamic resistance enables fast energy shunting and minimizes transient overshoot. |
| Ct | 45 pF (typ.) - Total capacitance at 0 V, 1 MHz; preserves signal rise time in USB 2.0 and audio interfaces. |
| Package | CST2 (1.0 mm × 0.6 mm) - Ultra-small footprint compatible with 0201-class PCB land patterns and high-density mobile layouts. |
Pinout & Package
The DF2B7PCT is housed in the CST2 surface-mount package (1.0 mm × 0.6 mm, 0.7 mg typical weight), optimized for automated placement and reflow in compact mobile PCB assemblies.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | I/O Line Terminal (Anode/Cathode configurable) | Connect to protected signal line (e.g., USB D+, HDMI TMDS+); polarity determined by grounding Pin 2. |
| Pin 2 | GND Reference Terminal | Must be connected to system ground; establishes reference for bidirectional clamping and defines current path during ESD event. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Snapback Protection | Enables single-device protection of AC-coupled or polarity-agnostic lines (e.g., USB differential pairs) without external biasing. |
| Low Clamping Voltage | 16 V max at 27 A pulse ensures protected ICs (e.g., USB PHYs) remain below absolute maximum ratings during ESD. |
| Ultra-Low Dynamic Resistance | 0.1 Ω typical RDYN reduces voltage overshoot and improves energy dissipation efficiency during fast transients. |
| Sub-1 mm Footprint | CST2 package fits within 0201 land pattern constraints, supporting miniaturization in smartphones and wearables. |
Applications
| Smartphone USB Interface | HDMI Signal Line Protection |
|---|---|
Use Scenario: Protecting USB 2.0 D+/D− lines from user-handling ESD in slim-profile smartphones. IC Role / Device Role / Timing Role: Bidirectional TVS diode placed directly at connector, clamping transients before reaching USB transceiver IC. Use Value: 45 pF capacitance avoids signal integrity loss at 480 Mbps; ±30 kV rating exceeds IEC61000-4-2 Level 4 requirements. | Use Scenario: Safeguarding HDMI TMDS+ and TMDS− channels against ESD during cable insertion in tablets and notebooks. IC Role / Device Role / Timing Role: Low-capacitance ESD suppressor mounted adjacent to HDMI receptacle, minimizing stub length. Use Value: 16 V clamping voltage prevents HDMI receiver latch-up; CST2 size allows dual-channel placement in tight connector zones. |
| Mobile Audio Jack Protection | Notebook PC SD Card Slot |
Use Scenario: Shielding 3.5 mm audio jack MIC and HP lines from repeated plug/unplug ESD in earbuds and headsets. IC Role / Device Role / Timing Role: Dual-line ESD protector with shared ground, handling both unidirectional and bidirectional analog signals. Use Value: 0.1 Ω RDYN ensures fast response to <1 ns ESD rise times; 5.5 V VRWM matches typical audio codec rail voltages. | Use Scenario: Securing SDIO data and command lines in ultrabook SD card slots exposed to frequent card insertion/removal. IC Role / Device Role / Timing Role: Compact TVS array element protecting four high-speed SDIO lines with minimal board area. Use Value: CST2 package enables discrete per-line protection without compromising routing density near card edge connectors. |
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; 12 V VC @ 1 A; 15 pF Ct; SOT-5X3 package (1.6 × 1.6 mm) | Requires separate devices per signal line; higher capacitance mismatch for USB 2.0; larger footprint | Select when unidirectional protection suffices and board space permits larger package. |
| ESD5Z7.0T1G | Bidirectional; 7.0 V VRWM; 18 V VC @ 1 A; 85 pF Ct; SOD-523 package (1.3 × 0.9 mm) | Higher clamping voltage risks downstream IC stress; excessive capacitance degrades >100 Mbps signals | Acceptable only for low-speed GPIO or power-rail protection where speed and clamping margin are secondary. |
Compared with TPD2E001DRYR and ESD5Z7.0T1G, the DF2B7PCT delivers superior high-speed interface protection via lower clamping voltage (16 V vs ≥18 V), lower capacitance (45 pF vs ≥15–85 pF), and smaller footprint (CST2 vs SOT-5X3/SOD-523), making it optimal for USB 2.0, HDMI, and audio applications demanding minimal signal distortion and strict ESD immunity.
Availability
DF2B7PCT is available at Aetrix Electronics and suitable for smartphone USB interfaces, HDMI signal paths, mobile audio jacks, and notebook SD card slots requiring stable component supply and consistent ESD performance across production batches.
Supply support for DF2B7PCT 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 DF2B7PCT belongs to Toshiba's ESD protection diode product line, engineered specifically for high-density, high-speed interface protection in battery-powered portable electronics with stringent size and signal-integrity constraints.
FAQ
What is the maximum working voltage the DF2B7PCT can protect?
The DF2B7PCT has a working peak reverse voltage (VRWM) of 5.5 V, meaning it is rated for continuous operation on signal lines up to this voltage. It is specifically intended for 5.0 V logic systems such as USB 2.0, HDMI, and audio interfaces. Exceeding 5.5 V may cause increased leakage or premature breakdown, so the DF2B7PCT must not be used on 12 V or higher rails without verification.
Does the DF2B7PCT require external biasing or direction configuration?
No - the DF2B7PCT is a bidirectional ESD protection diode with inherent snapback behavior, eliminating the need for external biasing or polarity selection. Its internal structure allows either pin to serve as the I/O terminal when the other is grounded, enabling flexible layout in differential or single-ended signal paths without redesigning the schematic for each use case. This behavior is intrinsic to the DF2B7PCT design.
How does the DF2B7PCT achieve low clamping voltage during ESD events?
The DF2B7PCT achieves a typical clamping voltage of 16 V at 27 A through its snapback-triggered silicon epitaxial planar structure, which transitions rapidly from high-impedance to low-impedance state upon ESD onset. Its 0.1 Ω typical dynamic resistance (RDYN) minimizes IR drop during surge conduction, directly contributing to low VC. This mechanism is verified per IEC61000-4-2 testing and is a defined characteristic of the DF2B7PCT.
Can the DF2B7PCT be used in USB 3.0 or PCIe Gen2+ interfaces?
No - the DF2B7PCT's 45 pF typical total capacitance exceeds the ≤1–2 pF requirement for USB 3.0 SuperSpeed (5 Gbps) and PCIe Gen2+ (5 GT/s) signal integrity. It is validated only for USB 2.0 (480 Mbps), HDMI 1.4 (1080p), and audio interfaces. For higher-speed protocols, a lower-capacitance ESD solution is required; the DF2B7PCT is not suitable.
What is the thermal and mechanical reliability of the DF2B7PCT in reflow soldering?
The DF2B7PCT is qualified for standard lead-free reflow profiles (J-STD-020), with a maximum junction temperature rating of 150 °C and storage range of −55 to +150 °C. Its CST2 package (1.0 mm × 0.6 mm) has been validated for automated placement and IPC-A-610-compliant solder joints. No special thermal relief or pad design is needed beyond standard SMT guidelines for the DF2B7PCT.
DF2B7PCT,L3F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package/Case:
- SOD-882
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 5.5V (Max)
- Voltage - Breakdown (Min):
- 5.6V
- Voltage - Clamping (Max) @ Ipp:
- 22V
- Current - Peak Pulse (10/1000µs):
- 27A (8/20µs)
- Power - Peak Pulse:
- 590W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 45pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- CST2
DF2B7PCT,L3F FAQ
1.How can I place an order for DF2B7PCT,L3F through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2B7PCT,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 DF2B7PCT,L3F reliable?
The price and inventory of DF2B7PCT,L3F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2B7PCT,L3F is usually 5 days.
3.What payment methods are accepted for DF2B7PCT,L3F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2B7PCT,L3F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2B7PCT,L3F?
DF2B7PCT,L3F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2B7PCT,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 DF2B7PCT,L3F?
For technical support, including DF2B7PCT,L3F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2B7PCT,L3F requirements.
6.How does Aetrix verify that DF2B7PCT,L3F is sourced from the original manufacturer or authorized distributors?
All DF2B7PCT,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 DF2B7PCT,L3F meets industry standards.
7.What is the process for return or replacement of DF2B7PCT,L3F?
All DF2B7PCT,L3F units undergo pre-shipment inspection (PSI). If there is an issue with DF2B7PCT,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 DF2B7PCT,L3F part is unused and in its original packaging.
Return procedure for DF2B7PCT,L3F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DF2B7PCT,L3F Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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Nexperia USA Inc.
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Diodes Incorporated
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