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Toshiba Semiconductor and Storage DF2B7AE,H3F
- Part No.:
- DF2B7AE,H3F
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- TVS Diodes
- Package:
- SC-79, SOD-523
- Datasheet:
-
DF2B7AE,H3F.pdf
- Description:
- TVS DIODE 5.5VWM 20VC ESC
- Quantity:
- Payment:
- Shipping:
Inventory:41,184
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Product details
Overview
DF2B7AE 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, 0.2 Ω typical dynamic resistance, 11 V clamping voltage at 4 A, and ultra-compact ESC package (0.8 mm × 1.2 mm). It is deployed on smartphone USB, HDMI, and audio jack signal lines to suppress electrostatic discharge transients.
For engineers reviewing the DF2B7AE datasheet, DF2B7AE pinout, DF2B7AE application, or DF2B7AE equivalent, key selection criteria include low clamping voltage under 4 A pulse, sub-10 pF capacitance for high-speed data integrity, snapback-triggered low-dynamic-resistance conduction, and ESC footprint compatibility with dense PCB layouts in portable electronics.
Technical Context
The DF2B7AE employs silicon epitaxial planar technology with snapback-triggered avalanche conduction, enabling rapid transition from high-impedance standby to low-impedance clamping mode during ESD events. Its bidirectional structure supports protection of both positive and negative transients without polarity constraints.
It operates within a 5.5 V working peak reverse voltage range and delivers 11 V clamping at 4 A (IEC61000-4-5 8/20 µs), with total capacitance of 8.5 pF (typ.) at 0 V - optimized for USB 2.0, HDMI, and audio interfaces where signal integrity and bandwidth preservation are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 5.5 V maximum - ensures safe operation on 5 V signal rails without leakage or false triggering |
| VESD (IEC61000-4-2) | ±30 kV contact - exceeds industrial ESD immunity requirements for handheld interface ports |
| RDYN | 0.2 Ω typical - minimizes voltage overshoot during fast ESD pulses by limiting IR drop across the diode |
| VC @ IPP = 4 A | 11 V typical - clamps transient energy below IC damage threshold for protected downstream logic |
| Ct @ 0 V, 1 MHz | 8.5 pF typical - preserves signal rise/fall times and eye diagram integrity on 480 Mbps USB 2.0 lines |
| Package | ESC (0.8 mm × 1.2 mm) - enables placement adjacent to connectors on space-constrained mobile PCBs |
Pinout & Package
The DF2B7AE is housed in the ESC surface-mount package (0.8 mm × 1.2 mm, 1.4 mg typical weight), with two terminals configured for bidirectional ESD clamping. Pin 1 and Pin 2 are symmetrical; either may serve as I/O while the other connects to GND per layout configuration.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Bidirectional ESD clamp terminal | Connect to protected I/O line (e.g., USB D+); GND must be connected to Pin 2 for functional protection |
| Pin 2 | Bidirectional ESD clamp terminal | Connect to system ground; completes low-impedance path for transient current during ESD event |
Key Features
| Feature | Design Value |
|---|---|
| Snapback-triggered conduction | Enables sub-nanosecond response and stable low-clamp behavior without parasitic oscillation |
| 0.2 Ω dynamic resistance | Reduces clamping voltage overshoot by >30% vs. conventional TVS diodes under 4 A TLP stress |
| ±30 kV IEC61000-4-2 rating | Meets highest-level ESD immunity required for consumer-facing ports without external shielding |
| 8.5 pF capacitance | Supports full-speed USB 2.0 (480 Mbps) and analog audio signals without measurable insertion loss |
Applications
| Smartphone Interface Protection | Tablet USB Port Protection |
|---|---|
Use Scenario: Protecting micro-USB or USB-C data lines (D+/D−) against user-handling ESD in handheld devices. 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 by clamping to 11 V before downstream logic thresholds are exceeded. | Use Scenario: Safeguarding OTG-capable USB host ports on Android tablets during peripheral hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance ESD clamp integrated into USB 2.0 routing near receptacle. Use Value: Maintains signal integrity up to 480 Mbps while surviving repeated ±8 kV contact discharges per IEC61000-4-2. |
| Notebook PC Audio Jack | Mobile HDMI Interface |
Use Scenario: Shielding 3.5 mm TRRS audio jacks from ESD during headphone insertion/removal. IC Role / Device Role / Timing Role: Dual-line ESD protector for left/right/ground/mic paths with shared ground reference. Use Value: Eliminates pop/click artifacts and codec input-stage damage using <10 pF loading per line. | Use Scenario: Protecting HDMI TMDS clock and data pairs in ultra-thin laptop designs. IC Role / Device Role / Timing Role: Per-lane ESD suppressor mounted adjacent to HDMI connector pins. Use Value: Enables HDMI 1.4 compliance (165 MHz pixel clock) with <0.5 dB insertion loss due to 8.5 pF capacitance. |
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, 5.5 V VRWM, 12 V VC @ 4 A, 12 pF Ct, SOT-5X3 package (1.0 mm × 1.45 mm) | Higher capacitance limits use to ≤100 Mbps interfaces; larger footprint reduces routing density | Select when legacy SOT-5X3 assembly infrastructure exists and USB 2.0 speed is not required |
| ESD5Z3.3T5G | 3.3 V VRWM, ±22 kV ESD rating, 10.5 V VC @ 4 A, 35 pF Ct, SOD-523 package (1.2 mm × 0.8 mm) | Lower working voltage restricts use to 3.3 V rails; higher capacitance degrades high-speed signal fidelity | Prefer only for cost-sensitive 3.3 V GPIO protection where bandwidth is non-critical |
Compared with TPD2E001DRYR and ESD5Z3.3T5G, the DF2B7AE delivers superior high-speed interface support via its 8.5 pF capacitance and 11 V clamping, while maintaining identical 5.5 V operating margin and matching ESC footprint density - making it optimal for next-generation mobile USB/HDMI/audio designs.
Availability
DF2B7AE is available at Aetrix Electronics and suitable for smartphone interface protection, tablet USB port hardening, notebook PC audio jack safeguarding, and mobile HDMI signal line ESD suppression requiring stable component supply and long-term lifecycle assurance.
Supply support for DF2B7AE 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 industrial, automotive, and consumer electronics markets.
The DF2B7AE belongs to Toshiba's ESC-series ESD protection diode family, engineered specifically for ultra-compact, high-performance transient suppression in space-constrained mobile interfaces.
FAQ
What is the maximum working voltage supported by the DF2B7AE?
The DF2B7AE has a working peak reverse voltage (VRWM) of 5.5 V, meaning it is rated for continuous operation on 5 V signal lines such as USB, HDMI, and audio interfaces. Exceeding this voltage risks premature conduction or increased leakage current. The DF2B7AE maintains stable performance up to this limit while delivering ±30 kV ESD protection per IEC61000-4-2.
Does the DF2B7AE require orientation during PCB placement?
No - the DF2B7AE is a bidirectional ESD diode with symmetrical pin configuration. Either Pin 1 or Pin 2 can serve as the I/O connection point, provided the other is tied to system ground. This eliminates polarity concerns during automated placement and simplifies layout for differential or shared-ground interfaces like USB D+/D− or audio TRRS lines.
What is the clamping voltage of the DF2B7AE under a 4 A ESD pulse?
The DF2B7AE delivers a typical clamping voltage (VC) of 11 V at 4 A peak pulse current (IPP), measured per IEC61000-4-5 8/20 µs waveform. This value ensures protected ICs - such as USB transceivers or HDMI receivers - remain below their absolute maximum voltage ratings during transient events. The DF2B7AE achieves this with 0.2 Ω dynamic resistance, minimizing IR-induced overshoot.
Can the DF2B7AE be used on high-speed interfaces like USB 2.0?
Yes - the DF2B7AE's 8.5 pF typical capacitance at 0 V ensures minimal signal distortion on full-speed USB 2.0 (480 Mbps) links. Its low dynamic resistance and snapback behavior preserve signal edge integrity during ESD events without introducing ringing or jitter. The DF2B7AE is routinely deployed on USB data lanes in smartphones and tablets where board space and bandwidth are simultaneously constrained.
What package type does the DF2B7AE use, and what are its dimensions?
The DF2B7AE uses Toshiba's ESC package: a 2-terminal surface-mount device measuring 0.8 mm × 1.2 mm with a typical weight of 1.4 mg. This ultra-compact footprint enables placement directly at connector pads in mobile designs where PCB real estate is highly constrained. The ESC package is distinct from standard SOD-523 or SC-79 outlines and requires dedicated land pattern dimensions per Toshiba's datasheet drawing.
DF2B7AE,H3F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package/Case:
- SC-79, SOD-523
- 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):
- 5.8V
- Voltage - Clamping (Max) @ Ipp:
- 20V
- Current - Peak Pulse (10/1000µs):
- 4A (8/20µs)
- Power - Peak Pulse:
- 80W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 8.5pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- ESC
DF2B7AE,H3F FAQ
1.How can I place an order for DF2B7AE,H3F through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2B7AE,H3F 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 DF2B7AE,H3F reliable?
The price and inventory of DF2B7AE,H3F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2B7AE,H3F is usually 5 days.
3.What payment methods are accepted for DF2B7AE,H3F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2B7AE,H3F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2B7AE,H3F?
DF2B7AE,H3F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2B7AE,H3F 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 DF2B7AE,H3F?
For technical support, including DF2B7AE,H3F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2B7AE,H3F requirements.
6.How does Aetrix verify that DF2B7AE,H3F is sourced from the original manufacturer or authorized distributors?
All DF2B7AE,H3F 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 DF2B7AE,H3F meets industry standards.
7.What is the process for return or replacement of DF2B7AE,H3F?
All DF2B7AE,H3F units undergo pre-shipment inspection (PSI). If there is an issue with DF2B7AE,H3F, 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 DF2B7AE,H3F part is unused and in its original packaging.
Return procedure for DF2B7AE,H3F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DF2B7AE,H3F Tags
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ESD9B5.0ST5G
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DESD3V3E1BL-7B
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D12V0L1B2LP-7B
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Diodes Incorporated
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