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Toshiba Semiconductor and Storage DF2B5PCT,L3F
- Part No.:
- DF2B5PCT,L3F
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- TVS Diodes
- Package:
- SOD-882
- Datasheet:
-
DF2B5PCT,L3F.pdf
- Description:
- BI-DIRECTIONAL ESD PROTECTION DI
- Quantity:
- Payment:
- Shipping:
Inventory:5,124
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Product details
Overview
DF2B5PCT 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 3.6 V, ±30 kV IEC61000-4-2 contact ESD rating, 0.1 Ω typical dynamic resistance, 14 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 SIM card slot circuits.
For engineers reviewing the DF2B5PCT datasheet, DF2B5PCT pinout, DF2B5PCT application, or DF2B5PCT equivalent, key selection criteria include low-capacitance (41 pF) signal integrity preservation, snapback-triggered low-clamp performance under fast ESD transients, and compatibility with 3.3 V logic-level interfaces requiring minimal board area.
Technical Context
The DF2B5PCT employs silicon epitaxial planar technology with snapback-triggered TVS behavior to achieve sub-14 V clamping at 27 A peak pulse current while maintaining 0.1 Ω dynamic resistance. Its bidirectional structure enables symmetric protection on any I/O line referenced to ground.
Designed specifically for high-density mobile PCBs, the device operates within a 3.3 V signal domain (VRWM ≤ 3.6 V), delivers 41 pF total capacitance at 0 V, and meets IEC61000-4-2 Class 4 (±30 kV contact/air) without derating - validated via TLP characterization between 8 A and 30 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage | 3.6 V - ensures safe operation on 3.3 V nominal signal lines without leakage or false triggering. |
| ESD Withstand Voltage | ±30 kV (IEC61000-4-2 contact) - provides robust immunity against human-body-model ESD events in handheld devices. |
| Clamp Voltage | 14 V @ 27 A - limits transient overvoltage to levels compatible with 3.3 V IC I/O structures during surge events. |
| Dynamic Resistance | 0.1 Ω (typ.) - minimizes voltage overshoot during fast ESD pulses by reducing IR drop across the protection path. |
| Total Capacitance | 41 pF @ 0 V, 1 MHz - preserves signal integrity for high-speed interfaces like USB 2.0 and HDMI up to ~300 Mbps. |
| Package Dimensions | 1.0 mm × 0.6 mm (CST2) - enables placement adjacent to connectors and fine-pitch BGA ICs without compromising layout density. |
Pinout & Package
The DF2B5PCT is housed in the CST2 surface-mount package (1.0 mm × 0.6 mm, 0.35 mm height, 0.7 mg weight), optimized for automated placement and reflow soldering in high-volume mobile manufacturing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | I/O Protection Terminal | Connected to protected signal line (e.g., USB D+, HDMI TMDS+, SIM CLK); must be paired with Pin 2 as ground reference. |
| Pin 2 | Ground Reference Terminal | Connected directly to system ground plane; establishes low-inductance return path essential for effective ESD clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional Snapback Clamping | Enables symmetric protection on AC-coupled or dual-rail I/O lines without polarity constraints. |
| Low Dynamic Resistance | 0.1 Ω typical value reduces voltage overshoot during 100 ps–1 ns ESD rise times, improving protection margin. |
| Ultra-Low Profile Packaging | CST2 footprint (1.0 × 0.6 mm) allows placement within 0.3 mm of connector pads, minimizing trace inductance. |
| High-Fidelity Signal Integrity | 41 pF capacitance and <50 Ω impedance match preserve eye diagram margins for USB 2.0 and MIPI D-PHY interfaces. |
Applications
| Smartphone USB-C Interface | Tablet HDMI Input Port |
|---|---|
Use Scenario: Protects USB-C CC, SBU, and sideband use (SBU) pins from ESD during cable insertion/removal in compact form factor designs. IC Role / Device Role: Bidirectional TVS diode placed immediately adjacent to USB-C receptacle, shunting transients to local ground. Use Value: Prevents latch-up or gate oxide damage in USB controller PHYs rated for 3.3 V I/O, leveraging 14 V clamping at 27 A. |
Use Scenario: Shields HDMI TMDS differential pairs and DDC lines from ESD events during hot-plug connection to external displays. IC Role / Device Role: Discrete ESD suppressor mounted per-channel at HDMI connector, preserving signal bandwidth up to 2.25 Gbps. Use Value: Maintains <41 pF loading per line to avoid HDMI compliance margin loss while delivering ±30 kV contact immunity. |
| Notebook PC SIM Card Slot | Industrial Handheld Scanner I/O |
Use Scenario: Guards SIM clock, data, and reset lines against ESD during user-inserted SIM card handling in thin-profile laptops. IC Role / Device Role: Single-channel bidirectional protector placed inline between SIM connector and baseband processor. Use Value: Ensures reliable SIM detection and communication under repeated ±30 kV air discharge exposure without signal degradation. |
Use Scenario: Protects RS-232/UART debug ports and GPIO buttons on ruggedized barcode scanners used in warehouse environments. IC Role / Device Role: General-purpose ESD clamp for low-speed digital I/O lines operating at 3.3 V logic levels. Use Value: Delivers field-proven immunity to repetitive ESD events without requiring additional series impedance or filtering. |
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 | Unidirectional configuration; 5.0 V VRWM; 12 pF capacitance; ±30 kV IEC61000-4-2. | Suitable only for DC-biased lines (e.g., power rails); not appropriate for AC-coupled or bidirectional data lines. | Select when protecting 5 V supply rails or unidirectional control signals where lower capacitance is critical. |
| Vishay VEML3020-001 | Bidirectional; 3.3 V VRWM; 25 pF capacitance; ±25 kV IEC61000-4-2; larger SOD-923 package (1.2 × 0.8 mm). | Lower ESD rating and larger footprint limit suitability in space-constrained mobile designs. | Consider for cost-sensitive industrial applications where 1.0 × 0.6 mm footprint is not mandatory. |
Compared with ESD9X5.0ST5G and VEML3020-001, the DF2B5PCT uniquely combines bidirectional 3.3 V operation, ±30 kV immunity, and the industry's smallest standard footprint (CST2), making it optimal for next-generation mobile I/O protection where board area and signal fidelity are constrained.
Availability
DF2B5PCT is available at Aetrix Electronics and suitable for smartphone interface protection, tablet HDMI shielding, and notebook SIM card slot ESD hardening requiring stable component supply and full traceability.
Supply support for DF2B5PCT 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 analog ICs for consumer, industrial, and automotive markets.
The DF2B5PCT belongs to Toshiba's CST2-series ESD protection portfolio, engineered specifically for ultra-compact, high-fidelity I/O protection in mobile and portable electronics with stringent size and performance requirements.
FAQ
What is the maximum working voltage supported by the DF2B5PCT?
The DF2B5PCT has a working peak reverse voltage (VRWM) of 3.6 V, making it suitable for continuous operation on 3.3 V nominal signal lines such as USB, HDMI, and SIM interfaces. This rating ensures no significant leakage current or premature conduction during normal operation while maintaining headroom for signal swing.
Does the DF2B5PCT require external biasing or control circuitry?
No, the DF2B5PCT is a passive bidirectional TVS diode that operates without external bias, power, or control signals. It functions automatically upon detection of overvoltage transients, leveraging intrinsic snapback characteristics to clamp energy to ground through Pin 2 - simplifying design and reducing BOM count.
How does the DF2B5PCT compare to multilayer varistors (MLVs) for mobile ESD protection?
The DF2B5PCT offers significantly lower dynamic resistance (0.1 Ω vs. >1 Ω for typical MLVs) and tighter clamping voltage control (14 V vs. >20 V), resulting in superior protection for sensitive 3.3 V I/O structures. Its silicon-based construction also provides more consistent parametric performance across temperature and lifetime than ceramic MLVs.
Can the DF2B5PCT be used on high-speed differential pairs like USB 3.2 Gen 1?
No - the DF2B5PCT's 41 pF capacitance and single-ended architecture are optimized for USB 2.0, HDMI, and other sub-500 Mbps interfaces. For USB 3.2 Gen 1 (5 Gbps), Toshiba recommends dedicated low-capacitance differential ESD arrays (e.g., DF2S7.5MCT) to maintain signal integrity and return loss compliance.
What is the recommended PCB layout practice for the DF2B5PCT?
Place the DF2B5PCT within 3 mm of the protected connector pin, route Pin 1 directly to the signal line, and connect Pin 2 to a solid ground plane using a short, wide trace (<2 mm length, ≥0.25 mm width). Avoid vias in the ground path to minimize inductance and ensure effective clamping during sub-nanosecond ESD events.
DF2B5PCT,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):
- 3.6V (Max)
- Voltage - Breakdown (Min):
- 3.7V
- 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:
- 41pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- CST2
DF2B5PCT,L3F FAQ
1.How can I place an order for DF2B5PCT,L3F through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2B5PCT,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 DF2B5PCT,L3F reliable?
The price and inventory of DF2B5PCT,L3F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2B5PCT,L3F is usually 5 days.
3.What payment methods are accepted for DF2B5PCT,L3F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2B5PCT,L3F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2B5PCT,L3F?
DF2B5PCT,L3F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2B5PCT,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 DF2B5PCT,L3F?
For technical support, including DF2B5PCT,L3F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2B5PCT,L3F requirements.
6.How does Aetrix verify that DF2B5PCT,L3F is sourced from the original manufacturer or authorized distributors?
All DF2B5PCT,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 DF2B5PCT,L3F meets industry standards.
7.What is the process for return or replacement of DF2B5PCT,L3F?
All DF2B5PCT,L3F units undergo pre-shipment inspection (PSI). If there is an issue with DF2B5PCT,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 DF2B5PCT,L3F part is unused and in its original packaging.
Return procedure for DF2B5PCT,L3F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DF2B5PCT,L3F Tags
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PESD2V0Y1BSFYL
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