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Toshiba Semiconductor and Storage DF5A6.8FUTE85LF
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- Part No.:
- DF5A6.8FUTE85LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- TVS Diodes
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
DF5A6.8FUTE85LF.pdf
- Description:
- TVS DIODE 5VWM USV
- Quantity:
- Payment:
- Shipping:
Inventory:6,521
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Product details
Overview
DF5A6.8FUTE85LF from Toshiba is an ESD protection diode array in a 4-channel ultra-compact SOT-323-5 package, rated for ±30 kV IEC61000-4-2 contact discharge, with 6.8 V nominal Zener voltage (IZ = 5 mA), 45 pF terminal capacitance at 1 MHz, and 200 mW power dissipation - deployed on USB 2.0 data lines and HDMI hot-plug detection circuits.
For engineers reviewing the DF5A6.8FUTE85LF datasheet, DF5A6.8FUTE85LF pinout, DF5A6.8FUTE85LF application, or DF5A6.8FUTE85LF equivalent, key selection criteria include ESD immunity level, low clamping voltage under transient stress, channel count per package, capacitance impact on high-speed signal integrity, and compatibility with 1.8–5 V interface rails.
Technical Context
This device integrates four independent Zener-type ESD protection diodes in a single SOT-323-5 package, each configured as a cathode-anode pair referenced to common ground. It operates exclusively in reverse-biased clamping mode during ESD events, with no forward conduction intended for steady-state voltage regulation.
The diode structure delivers fast response (<1 ns typical turn-on) to electrostatic transients while maintaining low dynamic impedance (10 Ω typ. at 5 mA) and tight Zener voltage tolerance (±0.4 V around 6.8 V). Its 45 pF capacitance is specified at VR = 0 V and 1 MHz, making it suitable for ≤480 Mbps data interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage | 6.8 V nominal at 5 mA - sets clamping threshold for ESD transients on protected lines |
| ESD immunity | ±30 kV per IEC61000-4-2 contact discharge - exceeds industrial and consumer system-level requirements |
| Terminal capacitance | 45 pF at VR = 0 V, f = 1 MHz - limits insertion loss and signal distortion on USB 2.0 and audio lines |
| Power dissipation | 200 mW - defines maximum sustained thermal load during repeated ESD events |
| Junction temperature | 125 °C max - constrains PCB layout and ambient operating envelope for reliability |
| Reverse current | ≤0.5 μA at VR = 5 V - ensures negligible leakage into 3.3 V or 5 V logic rails during normal operation |
Pinout & Package
SOT-323-5 package: 1.3 mm × 1.7 mm × 0.9 mm body, 0.65 mm lead pitch, gull-wing leads, moisture sensitivity level 1 (MSL1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode of Channel 1 | Input node for first protected signal line (e.g., USB D+) |
| 2 | Cathode of Channel 1 | Clamp node tied to ground via low-inductance path |
| 3 | Ground | Common reference for all four channels; must be low-impedance |
| 4 | Anode of Channel 2 | Input node for second protected signal line (e.g., USB D−) |
| 5 | Anode of Channel 3 | Input node for third protected signal line (e.g., HDMI HPD) |
Key Features
| Feature | Design Value |
|---|---|
| 4-channel integration in SOT-323-5 | Reduces board area by >60% vs. discrete diodes and cuts assembly cost per protected interface |
| ±30 kV IEC61000-4-2 rating | Enables single-device compliance with Level 4 system ESD testing without external staging |
| 45 pF capacitance @ 1 MHz | Preserves signal rise/fall times on 480 Mbps USB 2.0 links with <0.5 dB insertion loss at 240 MHz |
| 6.8 V Zener voltage tolerance | Ensures clamping occurs above 5 V rail but below 7 V IC absolute maximum ratings |
| 125 °C junction limit | Supports operation in sealed enclosures or near heat-generating components without derating |
Applications
| USB 2.0 Interface Protection | HDMI Hot-Plug Detection (HPD) |
|---|---|
Use Scenario: Protecting differential data pairs (D+, D−) in portable USB peripherals against user-handling ESD events. IC Role / Device Role / Timing Role: Transient voltage suppressor clamping fast-rising ESD pulses before they reach USB PHY transceivers. Use Value: Prevents latch-up or permanent damage to USB controller ICs while maintaining <100 ps response time and minimal signal distortion. | Use Scenario: Safeguarding the HDMI HPD line (5 V-tolerant, open-drain) from contact discharge during cable insertion/removal. IC Role / Device Role / Timing Role: Low-capacitance shunt clamp that activates only during ESD transients, remaining invisible to DC logic states. Use Value: Eliminates false HPD toggling and ensures reliable plug-and-play detection without degrading 5 V pull-up timing. |
| Smartphone Audio Jack | Industrial Sensor Interface |
Use Scenario: Shielding 3.5 mm TRRS audio lines (MIC, L/R, GND) from human-body-model ESD in handheld devices. IC Role / Device Role / Timing Role: Four-channel bidirectional ESD suppressor with grounded common cathode configuration. Use Value: Maintains audio signal fidelity (≤45 pF per line) while surviving >10,000 contact discharges at ±8 kV per IEC61000-4-2. | Use Scenario: Protecting analog sensor outputs (e.g., 0–10 V or 4–20 mA loop signals) in factory-floor instrumentation exposed to maintenance personnel ESD. IC Role / Device Role / Timing Role: Standoff diode array limiting transient overvoltage to <12 V peak during 15 kV air discharge events. Use Value: Prevents ADC input saturation and firmware lockup without requiring series resistance or RC 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 | Single-channel, 5.0 V Zener, SOT-523, 30 pF capacitance | Requires four separate placements for quad-line protection; lower capacitance suits higher-speed interfaces | Select when board space allows discrete placement and signal bandwidth exceeds 500 MHz |
| Vishay VEML6030X01 | Not applicable - optical ambient light sensor, unrelated function | N/A - incompatible device category | Exclude; misidentified cross-reference with no functional overlap |
Compared with DF5A6.8FUTE85LF, ESD9X5.0ST5G offers lower capacitance but lacks integrated quad-channel packaging, increasing layout complexity and BOM count; no valid alternative matches both the 4-channel SOT-323-5 form factor and ±30 kV rating simultaneously.
Availability
DF5A6.8FUTE85LF is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI hot-plug detection, and smartphone audio jack ESD hardening requiring stable component supply across production lifecycles.
Supply support for DF5A6.8FUTE85LF 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 application-specific optimization.
The DF5A6.8FUTE85LF belongs to Toshiba's DF5A-series ESD protection diode family, engineered specifically for high-density, multi-line interface protection in space-constrained consumer and industrial electronics.
FAQ
What is the primary function of the DF5A6.8FUTE85LF?
The DF5A6.8FUTE85LF is a dedicated ESD protection device - not a voltage regulator or general-purpose diode. It provides transient suppression for up to four signal lines using Zener clamping action, with strict design intent limited to electrostatic discharge mitigation per IEC61000-4-2. Its 6.8 V Zener voltage and ±30 kV rating make DF5A6.8FUTE85LF suitable only for interface-level surge protection, not continuous voltage regulation.
Can DF5A6.8FUTE85LF be used as a Zener voltage reference?
No - the DF5A6.8FUTE85LF is explicitly restricted to ESD protection use only, as stated in Toshiba's product documentation. Its Zener voltage specification (6.4–7.2 V) applies only under transient pulse conditions, not DC regulation. Using DF5A6.8FUTE85LF as a voltage reference risks premature degradation, parametric drift, and violates Toshiba's defined usage restrictions.
What does the "TE85LF" suffix indicate in DF5A6.8FUTE85LF?
The "TE85LF" suffix denotes Toshiba's tape-and-reel packaging standard: TE = embossed carrier tape, 85 = 8 mm tape width, LF = lead-free (Pb-free) termination and RoHS-compliant finish. This confirms DF5A6.8FUTE85LF meets JEDEC J-STD-020 moisture sensitivity level 1 and supports standard SMT reflow profiles without special baking.
How does DF5A6.8FUTE85LF compare to TVS diodes like SMAJ6.8A?
DF5A6.8FUTE85LF differs fundamentally from discrete TVS diodes: it integrates four channels in one SOT-323-5 package, targets low-capacitance interfaces (45 pF), and is optimized for fast ESD pulses (not surge currents). SMAJ6.8A handles higher energy (400 W) but has ~300 pF capacitance - making DF5A6.8FUTE85LF the correct choice for USB/HDMI, not SMAJ6.8A.
Is DF5A6.8FUTE85LF compatible with 1.8 V logic interfaces?
Yes - DF5A6.8FUTE85LF clamps above the 1.8 V rail (6.8 V Zener), ensuring no interference during normal operation. Its ≤0.5 μA reverse leakage at 5 V guarantees negligible loading on 1.8 V I/O pins. Signal integrity is preserved due to 45 pF capacitance, verified effective for interfaces up to 480 Mbps - confirming DF5A6.8FUTE85LF suitability for modern low-voltage, high-speed digital interfaces.
DF5A6.8FUTE85LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V
- Voltage - Breakdown (Min):
- 6.4V
- 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:
- USV
DF5A6.8FUTE85LF FAQ
1.How can I place an order for DF5A6.8FUTE85LF through Aetrix?
Please submit a Request for Quotation (RFQ) for DF5A6.8FUTE85LF 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 DF5A6.8FUTE85LF reliable?
The price and inventory of DF5A6.8FUTE85LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF5A6.8FUTE85LF is usually 5 days.
3.What payment methods are accepted for DF5A6.8FUTE85LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF5A6.8FUTE85LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF5A6.8FUTE85LF?
DF5A6.8FUTE85LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF5A6.8FUTE85LF 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 DF5A6.8FUTE85LF?
For technical support, including DF5A6.8FUTE85LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF5A6.8FUTE85LF requirements.
6.How does Aetrix verify that DF5A6.8FUTE85LF is sourced from the original manufacturer or authorized distributors?
All DF5A6.8FUTE85LF 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 DF5A6.8FUTE85LF meets industry standards.
7.What is the process for return or replacement of DF5A6.8FUTE85LF?
All DF5A6.8FUTE85LF units undergo pre-shipment inspection (PSI). If there is an issue with DF5A6.8FUTE85LF, 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 DF5A6.8FUTE85LF part is unused and in its original packaging.
Return procedure for DF5A6.8FUTE85LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DF5A6.8FUTE85LF 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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Diodes Incorporated
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D12V0L1B2LP-7B
Diodes Incorporated
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PESD2V0Y1BSFYL
Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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