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Toshiba Semiconductor and Storage DF5A6.8CJE,LM
- Part No.:
- DF5A6.8CJE,LM
- Manufacturer:
- Toshiba Semiconductor and Storage
- Category:
- TVS Diodes
- Package:
- SOT-553
- Datasheet:
-
DF5A6.8CJE,LM.pdf
- Description:
- TVS DIODE ESV
- Quantity:
- Payment:
- Shipping:
Inventory:8,433
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Product details
Overview
DF5A6.8CJE from TOSHIBA is a quad-channel ESD protection diode array designed for high-speed data lines, featuring 6.8 V nominal Zener voltage (VZ = 6.4–7.2 V at IZ = 5 mA), 23 pF typical terminal capacitance (CT), ±25 kV IEC61000-4-2 contact discharge immunity, and ultra-compact 5-pin SOT-353 (1-2W1A) package. It is deployed on USB 2.0, HDMI, and audio interface traces to suppress transient overvoltage.
For engineers reviewing the DF5A6.8CJE datasheet, DF5A6.8CJE pinout, DF5A6.8CJE application, or DF5A6.8CJE equivalent, key selection criteria include low-capacitance ESD clamping for signal integrity preservation, multi-line integration to reduce PCB footprint, and compliance with industrial-grade ESD immunity requirements without DC regulation functionality.
Technical Context
This device implements four independent cathode-anode ESD clamp paths in a single monolithic silicon die, each configured as a Zener-based transient voltage suppressor-not a bidirectional TVS or avalanche diode. Its operation relies on forward-biased conduction during negative transients and reverse Zener breakdown above 6.8 V for positive transients.
No DC blocking or voltage regulation is supported: the device is explicitly restricted to ESD-only use per Toshiba's documentation. Electrical behavior is defined only under transient conditions; static reverse current is limited to ≤0.5 μA at 5 V, and dynamic impedance remains ≤25 Ω at 5 mA test current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener voltage (VZ) | 6.4–7.2 V at IZ = 5 mA - defines clamping threshold for positive ESD events |
| Terminal capacitance (CT) | 23 pF typ. at VR = 0 V, f = 1 MHz - enables use on 480 Mbps USB 2.0 lines without signal degradation |
| ESD immunity | ±25 kV per IEC61000-4-2 contact discharge - exceeds Level 4 industrial requirement |
| Power dissipation (P) | 100 mW - limits sustained energy absorption; not rated for repetitive surge or lightning |
| Junction temperature (Tj) | −55 to +150 °C - supports operation in automotive cabin and industrial control environments |
| Reverse current (IR) | ≤0.5 μA at VR = 5 V - ensures negligible leakage on bias-sensitive analog or high-impedance digital lines |
Pinout & Package
DF5A6.8CJE uses the JEDEC-compatible SOT-353 (TOSHIBA designation: 1-2W1A) surface-mount package - 1.25 mm × 2.1 mm × 0.9 mm, 5-terminal, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CATHODE 1) | ESD clamp cathode for Channel 1 | Connected to protected signal line; conducts to common anode during positive transients |
| 2 (ANODE) | Common anode node | Shared return path for all four channels; must be tied to ground or low-impedance reference |
| 3 (CATHODE 2) | ESD clamp cathode for Channel 2 | Independent protection path for second high-speed line (e.g., D− of USB) |
| 4 (CATHODE 3) | ESD clamp cathode for Channel 3 | Enables three-line protection (e.g., HDMI TMDS+/- pairs plus clock) |
| 5 (CATHODE 4) | ESD clamp cathode for Channel 4 | Supports quad-line routing without discrete devices or layout complexity |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel monolithic ESD array | Reduces component count by 75% vs. four discrete diodes; eliminates inter-channel skew |
| 23 pF typical capacitance | Preserves signal rise/fall times on 480 Mbps USB 2.0 and 1.65 Gbps HDMI 1.3 lines |
| ±25 kV IEC61000-4-2 immunity | Meets and exceeds IEC/EN 61000-4-2 Level 4 for system-level ESD robustness validation |
| Low leakage (≤0.5 μA) | Prevents DC loading on high-impedance sensor interfaces or microphone bias networks |
Applications
| USB 2.0 Interface Protection | HDMI TMDS Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− differential pair on portable USB host/device ports against user-handling ESD events. IC Role / Device Role: Quad-channel unidirectional ESD clamp-two cathodes used for D+/D−, shared anode grounded. Use Value: 23 pF CT avoids signal integrity loss at 480 Mbps; ±25 kV rating ensures pass-fail compliance in system-level IEC61000-4-2 testing. | Use Scenario: Safeguarding three TMDS data channels and one TMDS clock line in compact HDMI source/sink connectors. IC Role / Device Role: Single-device quad-clamp replacing four discrete diodes; each cathode assigned to one TMDS line. Use Value: Reduces PCB area by >60% versus discrete solution while maintaining <0.5 dB insertion loss up to 1.65 GHz. |
| Smartphone Audio Jack ESD | Industrial Sensor Interface |
Use Scenario: ESD protection for stereo headphone/mic TRRS lines exposed to frequent plug/unplug cycles. IC Role / Device Role: Four independent clamps assigned to left/right audio, mic, and ground-sense lines. Use Value: ≤0.5 μA reverse leakage prevents DC offset in electret microphone bias circuits; 100 mW PD handles repeated 8 kV air discharge pulses. | Use Scenario: Shielding 4–20 mA current-loop sensor inputs and digital status lines in PLC I/O modules. IC Role / Device Role: Clamp for analog input, analog return, digital enable, and fault indicator lines sharing common ground reference. Use Value: −55 to +150 °C Tstg and Tj range supports extended industrial temperature operation without derating. |
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 NZQ6V8B2T5G | Single-channel, same VZ (6.4–7.2 V), 25 pF CT, ±22 kV ESD rating | Requires four devices for quad-line protection; larger total footprint and higher assembly cost | Preferred when board space allows discrete placement or channel isolation is required |
| Vishay ESDBLE6.8D04 | Quad-channel, 6.8 V VZ, 18 pF CT, ±30 kV ESD rating, different pinout (anode on Pin 1) | Lower capacitance improves RF performance but requires PCB redesign due to reversed anode location | Selected when tighter signal integrity or higher ESD margin is prioritized over drop-in replacement |
Compared with NZQ6V8B2T5G, DF5A6.8CJE reduces BOM count and layout complexity via integrated quad architecture; versus ESDBLE6.8D04, it trades 5 pF higher capacitance for pinout compatibility with legacy SOT-353 layouts and lower unit cost in volume procurement.
Availability
DF5A6.8CJE is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI TMDS line safeguarding, and industrial sensor interface ESD hardening requiring stable component supply across long-lifecycle embedded programs.
Supply support for DF5A6.8CJE 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, consumer, and automotive applications.
DF5A6.8CJE belongs to Toshiba's DF series of ultra-low-capacitance ESD protection arrays, engineered specifically for high-speed digital interface protection where signal fidelity and board-space efficiency are critical.
FAQ
Is DF5A6.8CJE rated for continuous DC voltage regulation?
No. DF5A6.8CJE is explicitly designated by Toshiba for ESD protection only and must not be used as a Zener voltage regulator. Its electrical characteristics-including VZ tolerance and dynamic impedance-are specified solely under transient test conditions (IEC61000-4-2), not steady-state DC operation. Using DF5A6.8CJE for constant-voltage applications violates its product restriction and may result in premature failure.
What is the maximum recommended trace length between DF5A6.8CJE and the protected signal line?
For optimal ESD suppression, the trace from DF5A6.8CJE cathode pins to the protected line should be ≤3 mm, and the anode-to-ground connection must be a low-inductance path (<1 nH) using a dedicated ground plane via. Longer traces increase inductive impedance, degrading clamping response time and allowing voltage overshoot beyond the device's rated VZ-a critical constraint confirmed in Toshiba's application guidance for DF5A6.8CJE.
Does DF5A6.8CJE support bidirectional ESD protection?
No. DF5A6.8CJE provides unidirectional clamping: it conducts during positive transients (via Zener breakdown) and blocks negative transients (forward-biased anode-cathode junction). For bidirectional protection, external series diodes or a complementary dual-rail array would be required. This limitation is inherent to its single-anode, multi-cathode topology and is documented in Toshiba's equivalent circuit diagram for DF5A6.8CJE.
Can DF5A6.8CJE be used on 5 V logic I/O lines without risk of forward conduction?
Yes. At VR = 5 V, DF5A6.8CJE exhibits ≤0.5 μA reverse leakage current, confirming no significant forward conduction occurs below its 6.4 V minimum Zener threshold. This makes DF5A6.8CJE safe for 5 V-tolerant interfaces such as USB D+/D− or HDMI hot-plug detect lines, provided the common anode is solidly grounded and no DC bias exceeds 5 V.
What is the thermal resistance (RθJA) of DF5A6.8CJE in standard FR-4 PCB layout?
Toshiba does not publish RθJA for DF5A6.8CJE in its official datasheet. The device is not intended for power dissipation management; its 100 mW absolute maximum rating applies only to short-duration ESD pulses (≤150 ns), not continuous thermal loading. Thermal design guidance for DF5A6.8CJE focuses on minimizing trace inductance-not heatsinking-since junction temperature rise during ESD events is transient and self-limiting.
DF5A6.8CJE,LM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Toshiba Semiconductor and Storage
- Package/Case:
- SOT-553
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- -
- 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:
- 23pF @ 1MHz
- Operating Temperature:
- 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- ESV
DF5A6.8CJE,LM FAQ
1.How can I place an order for DF5A6.8CJE,LM through Aetrix?
Please submit a Request for Quotation (RFQ) for DF5A6.8CJE,LM 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 DF5A6.8CJE,LM reliable?
The price and inventory of DF5A6.8CJE,LM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DF5A6.8CJE,LM is usually 5 days.
3.What payment methods are accepted for DF5A6.8CJE,LM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DF5A6.8CJE,LM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DF5A6.8CJE,LM?
DF5A6.8CJE,LM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DF5A6.8CJE,LM 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 DF5A6.8CJE,LM?
For technical support, including DF5A6.8CJE,LM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DF5A6.8CJE,LM requirements.
6.How does Aetrix verify that DF5A6.8CJE,LM is sourced from the original manufacturer or authorized distributors?
All DF5A6.8CJE,LM 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 DF5A6.8CJE,LM meets industry standards.
7.What is the process for return or replacement of DF5A6.8CJE,LM?
All DF5A6.8CJE,LM units undergo pre-shipment inspection (PSI). If there is an issue with DF5A6.8CJE,LM, 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 DF5A6.8CJE,LM part is unused and in its original packaging.
Return procedure for DF5A6.8CJE,LM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DF5A6.8CJE,LM Tags
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