My Inquiry
My Account
Toshiba Semiconductor and Storage DF3A6.2FUTE85LF
- Part No.:
- DF3A6.2FUTE85LF
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- TVS Diodes
- Package:
- SC-70, SOT-323
- Datasheet:
-
DF3A6.2FUTE85LF.pdf
- Description:
- TVS DIODE 3VWM USM
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DF3A6.2FUTE85LF from Toshiba is an ultra-compact dual-channel ESD protection diode array designed for high-speed data lines, featuring 6.2 V nominal Zener voltage, ±30 kV IEC61000-4-2 contact discharge immunity, and 55 pF terminal capacitance at 1 MHz-used in USB 2.0, HDMI, and audio jack interfaces.
For engineers reviewing the DF3A6.2FUTE85LF datasheet, DF3A6.2FUTE85LF pinout, DF3A6.2FUTE85LF application, or DF3A6.2FUTE85LF equivalent, key selection criteria include low clamping voltage under ESD stress, minimal signal distortion due to low capacitance, dual-diode integration for space-constrained PCBs, and guaranteed reliability up to 125°C junction temperature.
Technical Context
This device implements two independent Zener-type ESD protection elements in a single SOT-323 (SC-70) package, each with cathode-anode configuration optimized for bidirectional transient suppression. It operates exclusively as a transient voltage suppressor-not as a voltage regulator-with no DC biasing requirement beyond normal signal line operation.
The design targets fast-rising ESD events per IEC61000-4-2, delivering sub-nanosecond response time and clamping below 12 V at 30 A TLP pulse. Its 55 pF capacitance ensures compatibility with 480 Mbps USB 2.0 signaling without measurable eye diagram degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage | 6.2 V (nominal), ±0.4 V tolerance at 5 mA - defines precise clamping threshold for protected signal lines |
| ESD immunity | ±30 kV contact discharge (IEC61000-4-2) - exceeds industrial and consumer immunity requirements |
| Terminal capacitance | 55 pF at VR = 0 V, f = 1 MHz - enables use on high-speed interfaces up to USB 2.0 full-speed |
| Power dissipation | 100 mW - supports continuous operation in ambient temperatures up to 85°C with derating |
| Junction temperature | 125°C max - sets thermal design limit for board-level power dissipation and layout |
| Reverse leakage | ≤1.0 μA at VR = 3 V - ensures negligible DC loading on analog or digital signal paths |
Pinout & Package
DF3A6.2FUTE85LF uses the SOT-323 (SC-70) 3-pin package with dual-cathode configuration: Pin 1 = Cathode 1, Pin 2 = Anode (common), Pin 3 = Cathode 2. The compact 2.2 × 2.2 × 0.9 mm footprint supports high-density routing on portable electronics PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode of Channel 1 | Connected to protected signal line 1; clamps positive transients to ground via common anode |
| Pin 2 | Common Anode | Typically tied to system ground; serves as shared return path for both ESD channels |
| Pin 3 | Cathode of Channel 2 | Connected to protected signal line 2; clamps positive transients symmetrically with Channel 1 |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel ESD protection | Two independent 6.2 V Zener diodes in one SC-70 package - reduces component count and PCB area by 50% vs. discrete solutions |
| Ultra-low capacitance | 55 pF typical between cathode and anode - preserves signal integrity on 480 Mbps USB 2.0 and stereo audio lines |
| High ESD robustness | ±30 kV contact discharge rating - exceeds IEC61000-4-2 Level 4 by 2×, enabling single-stage protection in cost-sensitive designs |
| Low leakage current | ≤1.0 μA at 3 V reverse bias - prevents DC offset or loading on sensitive analog inputs like microphone bias rails |
Applications
| USB 2.0 Data Lines | HDMI DDC/CEC Lines |
|---|---|
Use Scenario: Protecting differential D+ and D− signals in portable USB peripherals against user-handling ESD events. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed immediately before the USB transceiver IC input pins. Use Value: Prevents latch-up or permanent damage to the USB PHY while maintaining <1% signal rise-time degradation at 480 Mbps. | Use Scenario: Shielding HDMI DDC (I²C) and CEC control lines from electrostatic discharge during cable insertion/removal. IC Role / Device Role / Timing Role: Low-capacitance clamp on 3.3 V bidirectional control bus operating at ≤400 kHz. Use Value: Enables reliable hot-plug detection and EDID communication without adding timing skew or pull-up load error. |
| Smartphone Audio Jacks | Industrial Sensor Interface |
Use Scenario: Guarding TRRS headset microphone and ground-sense lines against repeated plug/unplug ESD in handheld devices. IC Role / Device Role / Timing Role: Dual-channel Zener clamp isolating analog mic bias and ground-return paths from chassis discharge currents. Use Value: Eliminates audible pop/crackle during jack insertion and prevents ADC input saturation from transient overvoltage. | Use Scenario: Protecting 0–5 V analog output lines from ESD in factory-floor instrumentation exposed to operator touch. IC Role / Device Role / Timing Role: Passive shunt protector on low-bandwidth voltage outputs, rated for 125°C ambient operation. Use Value: Maintains calibration stability and avoids field returns caused by ESD-induced DAC register corruption or op-amp latch-up. |
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 | Single-channel, 5.6 V Zener, 30 pF capacitance, SOT-563 package | Lower capacitance but requires two devices for dual-line protection; higher assembly cost | Preferred when minimizing signal distortion on >1 Gbps interfaces is critical and board area allows dual placement |
| Vishay ESDE0402-060-0R50-0101 | 0402-size monolithic dual-diode, 6.0 V, 15 pF, 12 kV IEC61000-4-2 | Lower ESD rating and smaller package limit thermal handling; not suitable for 30 kV environments | Selected for ultra-thin wearables where height <0.5 mm is mandatory and ESD threat level is ≤15 kV |
Compared with NUP4202MR6T1G and ESDE0402-060-0R50-0101, DF3A6.2FUTE85LF delivers balanced performance: highest ESD immunity (±30 kV), moderate capacitance (55 pF), and integrated dual-channel topology-making it optimal for mid-tier consumer electronics where reliability, size, and cost must coexist.
Availability
DF3A6.2FUTE85LF is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI control line safeguarding, and smartphone audio jack ESD hardening requiring stable component supply across production lifecycles through April 2026.
Supply support for DF3A6.2FUTE85LF 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 energy efficiency for consumer, industrial, and automotive systems.
DF3A6.2FUTE85LF belongs to Toshiba's DF series of ultra-compact ESD protection diodes, engineered specifically for space-constrained high-speed interfaces where dual-line protection and certified ±30 kV immunity are required without sacrificing signal fidelity.
FAQ
What is the primary function of DF3A6.2FUTE85LF in circuit design?
DF3A6.2FUTE85LF functions exclusively as a bidirectional ESD protection device for two signal lines. It is not a voltage regulator or general-purpose Zener diode. Its role is to clamp transient voltages above ~6.2 V during electrostatic discharge events, diverting current safely to ground while maintaining low capacitance to avoid signal distortion on high-speed lines such as USB 2.0 or HDMI DDC.
Does DF3A6.2FUTE85LF support unidirectional or bidirectional ESD protection?
DF3A6.2FUTE85LF provides bidirectional ESD protection. Each channel consists of a Zener diode configured between cathode and common anode, allowing clamping of both positive and negative transients relative to ground. This architecture meets IEC61000-4-2 contact discharge requirements of ±30 kV without external polarity constraints.
What is the maximum operating temperature for DF3A6.2FUTE85LF?
The maximum junction temperature for DF3A6.2FUTE85LF is 125°C, and its storage temperature range extends from −55°C to +125°C. When used in applications with sustained ambient temperatures above 85°C, thermal derating per Toshiba's Reliability Handbook must be applied to ensure long-term reliability and prevent accelerated parametric shift.
Can DF3A6.2FUTE85LF be used as a voltage reference or constant-voltage diode?
No. DF3A6.2FUTE85LF is explicitly designated by Toshiba for ESD protection only and is not characterized or warranted for constant-voltage regulation. Its Zener voltage specification (5.8–6.6 V at 5 mA) applies solely under transient clamping conditions-not steady-state DC operation-and its dynamic impedance and leakage behavior are not optimized for reference accuracy or stability.
Is DF3A6.2FUTE85LF RoHS compliant and lead-free?
Yes. DF3A6.2FUTE85LF complies with the EU RoHS Directive and is manufactured as a lead-free device. Toshiba confirms halogen-free construction and full compliance with JEDEC J-STD-020 moisture sensitivity level (MSL) 1 specifications. Full environmental documentation is available upon request from authorized Toshiba distributors.
DF3A6.2FUTE85LF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package/Case:
- SC-70, SOT-323
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3V
- Voltage - Breakdown (Min):
- 5.8V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 55pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- USM
DF3A6.2FUTE85LF FAQ
1.How can I place an order for DF3A6.2FUTE85LF through Aetrix?
Please submit a Request for Quotation (RFQ) for DF3A6.2FUTE85LF 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 DF3A6.2FUTE85LF reliable?
The price and inventory of DF3A6.2FUTE85LF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF3A6.2FUTE85LF is usually 5 days.
3.What payment methods are accepted for DF3A6.2FUTE85LF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF3A6.2FUTE85LF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF3A6.2FUTE85LF?
DF3A6.2FUTE85LF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF3A6.2FUTE85LF 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 DF3A6.2FUTE85LF?
For technical support, including DF3A6.2FUTE85LF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF3A6.2FUTE85LF requirements.
6.How does Aetrix verify that DF3A6.2FUTE85LF is sourced from the original manufacturer or authorized distributors?
All DF3A6.2FUTE85LF 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 DF3A6.2FUTE85LF meets industry standards.
7.What is the process for return or replacement of DF3A6.2FUTE85LF?
All DF3A6.2FUTE85LF units undergo pre-shipment inspection (PSI). If there is an issue with DF3A6.2FUTE85LF, 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 DF3A6.2FUTE85LF part is unused and in its original packaging.
Return procedure for DF3A6.2FUTE85LF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DF3A6.2FUTE85LF Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
