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Toshiba Semiconductor and Storage DF2S5.1FS,L3M
- Part No.:
- DF2S5.1FS,L3M
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- TVS Diodes
- Package:
- SOD-923
- Datasheet:
-
DF2S5.1FS,L3M.pdf
- Description:
- TVS DIODE 1.5VWM SOD923
- Quantity:
- Payment:
- Shipping:
Inventory:4,126
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Product details
Overview
DF2S5.1FS from Toshiba Electronic Devices & Storage Corporation is a silicon epitaxial planar ESD protection diode designed for bidirectional transient suppression on high-speed signal lines. It features a working peak reverse voltage of 4.8 V, ±30 kV IEC61000-4-2 contact ESD rating, and 1.0 pF typical capacitance at 0 V, enabling use in USB 2.0, HDMI, and audio interface protection.
For engineers reviewing the DF2S5.1FS datasheet, DF2S5.1FS pinout, DF2S5.1FS application, or DF2S5.1FS equivalent, key selection criteria include low clamping voltage (5.4 V max at 1 A), ultra-low capacitance for signal integrity, SOD-923/fSC package compatibility with space-constrained layouts, and guaranteed ±30 kV ESD robustness per IEC61000-4-2.
Technical Context
This device implements a single-channel, bidirectional Zener-based ESD clamp with symmetrical breakdown characteristics. Its 5.1 V nominal zener voltage (at 5 mA) and 5.4 V maximum reverse breakdown voltage ensure precise voltage thresholding during fast transients.
The 45 Ω typical dynamic impedance and 5.4 V maximum clamping voltage (at 1 A IPP) deliver effective energy diversion while minimizing voltage overshoot. Total capacitance remains at 1.0 pF (typ.) at 0 V bias, preserving signal fidelity in >480 Mbps data paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Peak Reverse Voltage | 4.8 V - Maximum continuous DC or RMS signal voltage before leakage exceeds 1.5 µA |
| Zener Voltage (VZ) | 5.1 V (typ.) at 5 mA - Stable clamping threshold for bidirectional ESD events |
| Clamp Voltage (VC) | 5.4 V (max) at 1 A IPP - Limits voltage seen by protected IC during 8/20 µs surge |
| Total Capacitance | 1.0 pF (typ.) at 0 V, 1 MHz - Enables use on USB 2.0 and other high-speed interfaces |
| ESD Rating | ±30 kV per IEC61000-4-2 contact discharge - Meets industrial-grade ESD immunity requirements |
| Package | SOD-923 / fSC - 0.6 mm × 0.3 mm footprint, 0.3 mm height, 0.55–0.6 mg weight |
| Junction Temperature | 150 °C - Supports operation in thermally demanding environments |
Pinout & Package
DF2S5.1FS is housed in a miniature SOD-923 (Toshiba: 1-1AH1A) or fSC (Toshiba: 1-1L1S) surface-mount package - both are identical 2-pin, cathode-anode configured devices with 0.6 mm × 0.3 mm body size and 0.3 mm profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to system ground or common reference; forms cathode-side connection of bidirectional Zener pair |
| 2 | Anode | Connected to protected signal line; completes bidirectional clamping path to ground via Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD Clamping | Enables symmetric protection on AC-coupled or differential signal lines without polarity constraints |
| Ultra-Low Capacitance | 1.0 pF typical ensures minimal signal distortion and insertion loss in USB 2.0, audio, and display interfaces |
| High ESD Withstand | Guaranteed ±30 kV IEC61000-4-2 contact discharge rating meets stringent industrial and consumer immunity standards |
| Low Clamping Voltage | 5.4 V maximum at 1 A pulse limits stress on downstream ICs such as USB transceivers or audio codecs |
| Miniature Package | SOD-923/fSC footprint saves PCB area in compact portable electronics and wearable designs |
Applications
| USB 2.0 Data Lines | HDMI DDC/CEC Channels |
|---|---|
Use Scenario: Protecting USB 2.0 D+ and D− lines against user-handling ESD events in smartphones and peripherals. IC Role / Device Role: Bidirectional low-capacitance clamp placed between connector and PHY IC. Use Value: 1.0 pF capacitance avoids signal integrity degradation at 480 Mbps; ±30 kV rating exceeds IEC61000-4-2 Level 4 requirement. | Use Scenario: Safeguarding HDMI DDC (I²C) and CEC control lines from electrostatic discharge during cable insertion. IC Role / Device Role: Two-terminal shunt protector tied between signal and ground, with no DC loading on 3.3 V bus. Use Value: 4.8 V VRWM allows full 3.3 V logic swing; 5.4 V VC prevents latch-up in HDMI controller I/O cells. |
| Smartphone Audio Jacks | Industrial Sensor Interfaces |
Use Scenario: ESD protection for 3.5 mm TRRS microphone and headset detection lines exposed to frequent plugging/unplugging. IC Role / Device Role: Single-diode clamp on each analog audio path (MIC, HP_L/R, DET) referenced to system ground. Use Value: Sub-1 pF capacitance preserves wideband audio frequency response; SOD-923 enables placement directly at jack footprint. | Use Scenario: Protecting 4–20 mA current-loop sensor inputs or RS-485 stub lines in factory automation equipment. IC Role / Device Role: Transient voltage suppressor on field-side analog/digital I/O, mounted near connector entry point. Use Value: 150 °C junction rating supports operation in hot enclosures; ±30 kV rating covers harsh handling environments. |
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 NUP4202MR6T1G | Quad-channel array in SOT-563; 5.5 V VBR, 0.8 pF Ct, ±30 kV ESD | Offers integrated dual-line protection; requires different layout and routing | Preferred when protecting multiple adjacent lines (e.g., USB ID/D+/D−) with shared ground |
| Vishay ESDBLE5.0D1W | Single-channel in SOD-923; 5.0 V VBR, 0.7 pF Ct, ±30 kV ESD | Lower capacitance and slightly lower clamping; same footprint and pinout | Drop-in alternative where sub-0.8 pF is critical for >1 Gbps interfaces |
Compared with DF2S5.1FS, NUP4202MR6T1G provides multi-line integration at the cost of channel independence, while ESDBLE5.0D1W offers marginally better high-frequency performance in identical form factor-both require validation of board-level clamping behavior under system-level ESD testing.
Availability
DF2S5.1FS is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI control channel safeguarding, and smartphone audio jack ESD hardening requiring stable component supply across high-mix production runs.
Supply support for DF2S5.1FS 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 systems.
The DF2S5.1FS belongs to Toshiba's ESD protection diode product line, engineered specifically for ultra-low-capacitance, high-reliability transient suppression on high-speed digital and analog signal paths.
FAQ
What is the maximum clamping voltage of the DF2S5.1FS under a 1 A ESD pulse?
The DF2S5.1FS has a maximum clamping voltage (VC) of 5.4 V when subjected to a 1 A peak pulse current (IPP), as specified in the Electrical Characteristics table under IEC61000-4-5 8/20 µs waveform conditions. This value ensures downstream ICs experience limited overvoltage stress during transient events. The DF2S5.1FS maintains this performance across its operating temperature range and is validated per Toshiba's production test flow.
Does the DF2S5.1FS support bidirectional ESD protection?
Yes, the DF2S5.1FS is a bidirectional ESD protection diode, with symmetrical cathode-anode configuration enabling equal clamping performance for both positive and negative transients. Its Zener voltage is rated at 5.1 V (typ.) for reverse breakdown in either direction, and it achieves ±30 kV ESD immunity per IEC61000-4-2 contact discharge. This makes DF2S5.1FS suitable for AC-coupled or differential signal lines without polarity concerns.
What package types are associated with the DF2S5.1FS?
The DF2S5.1FS is offered in two identical-outline packages: SOD-923 (Toshiba designation 1-1AH1A) and fSC (Toshiba designation 1-1L1S). Both are 2-pin, surface-mount packages measuring 0.6 mm × 0.3 mm with 0.3 mm height and typical weight of 0.55–0.6 mg. Pin 1 is cathode and Pin 2 is anode in both variants, and they share identical electrical specifications and land pattern requirements.
Can the DF2S5.1FS be used for voltage regulation applications?
No, the DF2S5.1FS is explicitly designed and qualified only for ESD protection-not for voltage regulation. Toshiba's datasheet states: "This product is designed for protection against electrostatic discharge (ESD) and is not intended for any other purpose, including, but not limited to, voltage regulation." Its Zener characteristics are optimized for transient clamping, not stable DC regulation, and it lacks the thermal and current-handling capability required for regulated power supply use.
What is the total capacitance of the DF2S5.1FS at zero bias?
The DF2S5.1FS exhibits a typical total capacitance (Ct) of 1.0 pF measured at 0 V DC bias and 1 MHz frequency, as confirmed in the Electrical Characteristics table. This ultra-low value is critical for preserving signal integrity on high-speed interfaces such as USB 2.0 and HDMI DDC lines. The DF2S5.1FS maintains consistent capacitance behavior across its operational voltage range, supporting reliable high-frequency performance.
DF2S5.1FS,L3M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package/Case:
- SOD-923
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 1.5V (Max)
- Voltage - Breakdown (Min):
- 4.8V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 45pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-923
DF2S5.1FS,L3M FAQ
1.How can I place an order for DF2S5.1FS,L3M through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2S5.1FS,L3M 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 DF2S5.1FS,L3M reliable?
The price and inventory of DF2S5.1FS,L3M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2S5.1FS,L3M is usually 5 days.
3.What payment methods are accepted for DF2S5.1FS,L3M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2S5.1FS,L3M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2S5.1FS,L3M?
DF2S5.1FS,L3M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2S5.1FS,L3M 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 DF2S5.1FS,L3M?
For technical support, including DF2S5.1FS,L3M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2S5.1FS,L3M requirements.
6.How does Aetrix verify that DF2S5.1FS,L3M is sourced from the original manufacturer or authorized distributors?
All DF2S5.1FS,L3M 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 DF2S5.1FS,L3M meets industry standards.
7.What is the process for return or replacement of DF2S5.1FS,L3M?
All DF2S5.1FS,L3M units undergo pre-shipment inspection (PSI). If there is an issue with DF2S5.1FS,L3M, 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 DF2S5.1FS,L3M part is unused and in its original packaging.
Return procedure for DF2S5.1FS,L3M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DF2S5.1FS,L3M Tags
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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