My Inquiry
My Account
Toshiba Semiconductor and Storage DF2S8.2CT,L3F
- Part No.:
- DF2S8.2CT,L3F
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- TVS Diodes
- Package:
- SOD-882
- Datasheet:
-
DF2S8.2CT,L3F.pdf
- Description:
- TVS DIODE 6.5VWM CST2
- Quantity:
- Payment:
- Shipping:
Inventory:9,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DF2S8.2CT from Toshiba Electronic Devices & Storage Corporation is an ESD protection diode in a CST2 package, featuring ±30 kV IEC61000-4-2 contact discharge rating, 8.2 V typical zener voltage at 5 mA, and 0.5 µA max reverse current at 6.5 V, deployed for high-reliability USB data line protection in portable electronics.
For engineers reviewing the DF2S8.2CT datasheet, DF2S8.2CT pinout, DF2S8.2CT application, or DF2S8.2CT equivalent, key selection criteria include clamping performance under transient ESD stress, low dynamic impedance for fast response, ultra-low capacitance for signal integrity preservation, and compatibility with high-speed interfaces such as USB 2.0 and HDMI.
Technical Context
This device implements a single-channel silicon epitaxial planar Zener diode structure optimized for bidirectional ESD suppression. It operates exclusively in reverse-biased clamp mode with no voltage regulation function, and its electrical behavior is defined strictly by breakdown characteristics-not steady-state regulation.
The DF2S8.2CT delivers 8.2 V nominal zener voltage with ±0.5 V tolerance, 20 Ω typical dynamic impedance, and 0.6 pF typical total capacitance at 0 V, enabling minimal signal distortion on high-frequency lines while maintaining robust ±30 kV ESD immunity per IEC61000-4-2 contact discharge test.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 8.2 V typical at IZ = 5 mA - sets precise clamping threshold for transient overvoltage events |
| Dynamic Impedance (ZZ) | 20 Ω typical at IZ = 5 mA - ensures low-voltage overshoot during fast ESD pulses |
| Reverse Current (IR) | 0.5 µA max at VR = 6.5 V - guarantees negligible leakage in normal operating bias |
| Total Capacitance (Ct) | 0.6 pF typical at VR = 0 V, f = 1 MHz - preserves signal integrity on USB 2.0 and audio lines |
| ESD Rating | ±30 kV per IEC61000-4-2 contact discharge - meets highest industrial ESD immunity requirement |
| Junction Temperature | 150 °C max - supports operation in compact, thermally constrained PCB layouts |
Pinout & Package
DF2S8.2CT uses the CST2 surface-mount package (TOSHIBA designation: 1-1P1S), measuring 1.0 × 0.6 × 0.35 mm with typical weight of 0.7 mg. This ultra-compact two-terminal device has no internal active control logic and relies solely on passive Zener clamping behavior.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to protected line; conducts during positive transients when referenced to ground |
| 2 | Anode | Connected to system ground; completes clamp path during negative ESD events |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD Clamping | Enables single-device protection of AC-coupled or differential signal lines without polarity constraints |
| Ultra-Low Capacitance | 0.6 pF typical ensures <1% signal attenuation at 480 MHz (USB 2.0 full-speed bandwidth) |
| High ESD Withstand Level | ±30 kV IEC61000-4-2 contact discharge exceeds EN 61000-4-2 Level 4 requirements |
| Precision Zener Threshold | 7.7–8.7 V guaranteed VZ range allows accurate margining against interface I/O voltage rails |
Applications
| USB 2.0 Data Lines | HDMI DDC Channel |
|---|---|
Use Scenario: Protecting D+ and D− pins of USB 2.0 transceivers against human-body-model and IEC61000-4-2 ESD events during plug/unplug cycles. IC Role / Device Role / Timing Role: Passive bidirectional clamp diode placed directly at connector, shunting ESD current to ground before it reaches the PHY. Use Value: 0.6 pF capacitance prevents signal rise-time degradation; ±30 kV rating eliminates need for secondary protection stages. | Use Scenario: Safeguarding the I²C-based Display Data Channel (DDC) lines between source and display in HDMI 1.4/2.0 systems. IC Role / Device Role / Timing Role: Low-capacitance transient voltage suppressor on SDA/SCL lines, preserving 100 kHz I²C timing margins. Use Value: Sub-1 pF capacitance avoids clock stretching or arbitration failure; 8.2 V VZ aligns with 3.3 V I/O rail headroom. |
| Smartphone Audio Jacks | Industrial Sensor Interface |
Use Scenario: ESD protection for analog audio paths (MIC, HP_L/R) exposed via 3.5 mm TRRS jacks in handheld devices. IC Role / Device Role / Timing Role: Signal-line protector with minimal parasitic loading, placed adjacent to jack to intercept discharge before codec input. Use Value: 0.5 µA max leakage prevents DC offset errors; 20 Ω ZZ limits clamping overshoot to <100 mV above rail. | Use Scenario: Shielding 4–20 mA current-loop sensor inputs or RS-485 receiver pins from field-induced ESD in factory automation equipment. IC Role / Device Role / Timing Role: Standalone transient suppressor mounted at terminal block entry point, grounded to chassis earth. Use Value: 150 °C Tj rating supports operation near heat-generating PLC modules; ±30 kV rating covers worst-case maintenance-handling events. |
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 NZQ2S8.2T5G | Same CST2 package, 8.2 V VZ, but 1.0 pF Ct (vs. 0.6 pF) and ±25 kV ESD rating | Higher capacitance may degrade >200 MHz signal edges; lower ESD margin requires additional layout shielding | Prefer DF2S8.2CT where USB 2.0 or HDMI signal fidelity is critical |
| Vishay ESDE08V23D04 | DFN1006-2L package, 8.2 V VZ, 0.5 pF Ct, but only ±15 kV IEC61000-4-2 rating | Limited to consumer-grade ESD environments; not suitable for industrial handling scenarios | Select DF2S8.2CT when ±30 kV compliance is mandatory per system-level EMC test plan |
Compared with NZQ2S8.2T5G and ESDE08V23D04, the DF2S8.2CT provides superior ESD immunity and lower capacitance in the same footprint-enabling higher-speed interface protection without compromising board space or reliability margin.
Availability
DF2S8.2CT is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI DDC safeguarding, and smartphone audio jack ESD hardening requiring stable component supply across high-volume consumer and industrial programs.
Supply support for DF2S8.2CT 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, efficiency, and miniaturization.
The DF2S8.2CT belongs to Toshiba's CST2-series ESD protection diodes, engineered specifically for ultra-low-capacitance, high-immunity transient suppression in space-constrained high-speed digital interfaces.
FAQ
What is the primary function of the DF2S8.2CT?
The DF2S8.2CT is a dedicated bidirectional ESD protection diode, not a voltage regulator. Its sole function is to clamp transient overvoltages-specifically electrostatic discharge events-to safe levels using Zener breakdown, with no capability for continuous voltage regulation or power handling beyond specified pulse conditions.
Does the DF2S8.2CT support unidirectional or bidirectional ESD protection?
The DF2S8.2CT provides bidirectional ESD protection due to its symmetrical Zener structure. Pin 1 (cathode) and Pin 2 (anode) form a reversible clamp path, allowing it to suppress both positive and negative ESD transients on the same signal line without polarity constraints.
What is the maximum allowable junction temperature for the DF2S8.2CT?
The DF2S8.2CT has a maximum junction temperature (Tj) rating of 150 °C, as specified in Toshiba's absolute maximum ratings table. This limit applies under continuous operation and must be respected in thermal design, especially when used near heat-generating components or in sealed enclosures.
Can the DF2S8.2CT be used for voltage regulation applications?
No-the DF2S8.2CT is explicitly designed and rated only for ESD protection. Toshiba's documentation states it is "not intended for any other purpose, including, but not limited to, voltage regulation." Its parameters (e.g., VZ tolerance, dynamic impedance) are optimized for transient clamping, not stable DC regulation.
What does the marking code 'YG' indicate on the DF2S8.2CT package?
The marking code 'YG' laser-etched on the top surface of the DF2S8.2CT identifies the specific device variant within Toshiba's CST2 diode family. It corresponds uniquely to the DF2S8.2CT part number and is used for traceability and visual verification during assembly and inspection.
DF2S8.2CT,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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 6.5V
- Voltage - Breakdown (Min):
- 7.7V
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 20pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- CST2
DF2S8.2CT,L3F FAQ
1.How can I place an order for DF2S8.2CT,L3F through Aetrix?
Please submit a Request for Quotation (RFQ) for DF2S8.2CT,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 DF2S8.2CT,L3F reliable?
The price and inventory of DF2S8.2CT,L3F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF2S8.2CT,L3F is usually 5 days.
3.What payment methods are accepted for DF2S8.2CT,L3F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF2S8.2CT,L3F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF2S8.2CT,L3F?
DF2S8.2CT,L3F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF2S8.2CT,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 DF2S8.2CT,L3F?
For technical support, including DF2S8.2CT,L3F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF2S8.2CT,L3F requirements.
6.How does Aetrix verify that DF2S8.2CT,L3F is sourced from the original manufacturer or authorized distributors?
All DF2S8.2CT,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 DF2S8.2CT,L3F meets industry standards.
7.What is the process for return or replacement of DF2S8.2CT,L3F?
All DF2S8.2CT,L3F units undergo pre-shipment inspection (PSI). If there is an issue with DF2S8.2CT,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 DF2S8.2CT,L3F part is unused and in its original packaging.
Return procedure for DF2S8.2CT,L3F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DF2S8.2CT,L3F 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…
