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Diodes Incorporated DT1240A-04LP20-7
- Part No.:
- DT1240A-04LP20-7
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
DT1240A-04LP20-7.pdf
- Description:
- TVS DIODE 3.3VWM 8.5VC DFN2010-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,800
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Product details
Overview
DT1240A-04LP20 from Diodes Incorporated is a 4-channel low-capacitance TVS diode array designed for ESD and surge protection of high-speed I/O lines, featuring 5V reverse breakdown voltage (VBR), 5.5A peak pulse current (IPP), 0.55pF typical channel input capacitance, and 7.5V clamping voltage at 10A TLP. It is used in HDMI 2.0, USB 3.1, and Serial ATA interfaces where signal integrity and fast transient suppression are critical.
For engineers reviewing the DT1240A-04LP20 datasheet, DT1240A-04LP20 pinout, DT1240A-04LP20 application, or DT1240A-04LP20 equivalent, key selection criteria include channel count, clamping voltage under 8/20µs surge, dynamic resistance, IEC 61000-4-2 contact/air ESD rating, and DFN2010-8 package compatibility with high-density PCB layouts.
Technical Context
The DT1240A-04LP20 integrates four independent bidirectional TVS diodes in a single X2-DFN2010-8 (Type B) package, each configured as a low-capacitance clamp between I/O and ground. Its 0.22Ω TLP dynamic resistance ensures minimal voltage overshoot during fast transients.
It meets IEC 61000-4-2 (±14kV contact, ±16kV air) and IEC 61000-4-5 (5.5A, 8/20µs) standards, with a 3.3V reverse working voltage (VRWM) and 5V minimum breakdown voltage (VBR), enabling robust protection without interfering with 3.3V logic signaling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (Min) | 5V - Ensures reliable triggering above 3.3V system rail, preventing false clamping during normal operation |
| IPP (Max) | 5.5A - Withstands IEC 61000-4-5 lightning surges without degradation |
| CI/O (Typ) | 0.55pF - Minimizes signal distortion on HDMI 2.0 and USB 3.1 differential pairs |
| VC @ 5.5A | 7V - Limits transient voltage to safe levels for 3.3V interface receivers |
| TLP RDYN | 0.22Ω - Reduces clamping voltage overshoot during nanosecond-scale ESD events |
| ESD Rating | ±14kV contact / ±16kV air - Exceeds IEC 61000-4-2 Level 4 for industrial and consumer end-equipment |
Pinout & Package
Package: X2-DFN2010-8 (Type B), 2.0mm × 1.0mm × 0.4mm, lead-free NiPdAu-plated terminals, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | I/O Channel | Four independent protected signal lines; each connects to one TVS diode anode-cathode pair referenced to GND |
| 5, 6, 7, 8 | No Connection | Unused thermal/structural pads; must remain unconnected per datasheet schematic and layout guidance |
Key Features
| Feature | Design Value |
|---|---|
| 4-channel ESD protection | Enables single-device protection of full USB 3.1 or HDMI 2.0 differential lane sets (TX/RX + DDC/HPD) |
| 0.55pF channel capacitance | Preserves signal rise/fall times <100ps on 5Gbps links without measurable eye closure |
| 7.5V TLP clamping @ 10A | Keeps protected IC I/O pins below absolute maximum ratings during worst-case ESD stress |
| IEC 61000-4-5 compliant | Validated for use in industrial equipment exposed to conducted surges on external ports |
Applications
| HDMI 2.0 Interface Protection | USB 3.1 Gen 1 Port Protection |
|---|---|
Use Scenario: Protecting HDMI 2.0 TMDS differential pairs and DDC/CEC control lines against ESD during cable insertion and handling. IC Role / Device Role / Timing Role: Bidirectional TVS clamp on each I/O line, referenced to system ground, with sub-1ns response time. Use Value: Prevents latch-up or gate oxide damage in HDMI receiver ICs while maintaining <0.1dB insertion loss up to 3GHz. | Use Scenario: Shielding USB 3.1 SuperSpeed differential lanes (SSTX+/−, SSRX+/−) and VBUS/GND paths from electrostatic discharge. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor placed adjacent to connector, shunting ESD energy to ground before reaching controller PHY. Use Value: Enables full compliance with USB-IF ESD test plan using single 8-pin DFN instead of discrete diodes per lane. |
| Serial ATA III (6Gbps) Host Port | DVI™ Dual-Link Video Interface |
Use Scenario: Safeguarding SATA transmitter/receiver pins on host controllers and storage devices against board-level ESD events. IC Role / Device Role / Timing Role: Four-channel TVS array protecting TX+/−, RX+/− differential pairs with matched capacitance across channels. Use Value: Maintains impedance continuity (Z₀ ≈ 100Ω) and reduces jitter accumulation caused by parasitic capacitance imbalance. | Use Scenario: ESD hardening of DVI dual-link TMDS channels (up to 24 data lines) and hot-plug detect (HPD) circuitry. IC Role / Device Role / Timing Role: Per-lane transient suppressor deployed at DVI connector edge, grounded to chassis via low-inductance path. Use Value: Eliminates pixel corruption and display dropouts during repeated cable mating cycles in commercial AV installations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-channel low-capacitance TVS diode array applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ4.5A-Q | Single-channel, 4.5V VBR, 100pF CI/O, SMA package | Requires four discrete devices; higher board area and mismatched capacitance | Only suitable when space constraints allow discrete placement and cost favors legacy SMT packages |
| SP3222-04UTG | 4-channel, 3.3V VRWM, 0.5pF CI/O, 6.5V VC @ 5.5A, SOT-23-8 | Slightly lower clamping voltage but larger footprint and higher thermal resistance (RθJA = 290°C/W vs. 350°C/W) | Preferred for designs prioritizing lowest possible clamping over ultra-compact layout |
Compared with SMAJ4.5A-Q and SP3222-04UTG, the DT1240A-04LP20 delivers optimal balance of ultra-low capacitance, minimal footprint (2.0×1.0mm), and industry-leading ESD robustness in a thermally efficient DFN package-making it ideal for next-generation high-speed interconnects where density and signal fidelity are co-constrained.
Availability
DT1240A-04LP20 is available at Aetrix Electronics and suitable for HDMI 2.0, USB 3.1, and Serial ATA III applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for DT1240A-04LP20 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability protection, power management, and signal integrity solutions for industrial, computing, and consumer markets.
The DT1240A-04LP20 belongs to Diodes' high-speed TVS diode array product line, engineered specifically for ESD and surge protection of multi-gigabit serial interfaces without compromising signal integrity or PCB real estate.
FAQ
What is the maximum operating temperature range for the DT1240A-04LP20?
The DT1240A-04LP20 is rated for continuous operation from −55°C to +85°C ambient temperature, validated per JEDEC JESD22-A104 thermal cycling and JESD22-A108 high-temperature operating life testing. This range supports deployment in industrial enclosures and consumer electronics without derating under standard airflow conditions.
Can the NC pins (5–8) be grounded or left floating?
Pins 5–8 are designated No Connection in the official Diodes datasheet and internal die construction. They must remain unconnected-neither grounded nor tied to any net-as they serve only mechanical anchoring and thermal dissipation functions. Grounding them may cause unpredictable leakage or violate qualification test margins.
Does the DT1240A-04LP20 meet AEC-Q200 requirements for automotive use?
No-the DT1240A-04LP20 is not AEC-Q200 qualified. Diodes explicitly states in the datasheet that automotive-grade variants require separate PPAP-capable part numbers and IATF 16949 manufacturing. This device is intended for commercial and industrial applications only.
How does the 0.22Ω TLP dynamic resistance impact system-level ESD performance?
The 0.22Ω TLP dynamic resistance directly lowers the clamping voltage during fast ESD events: for a 10A TLP pulse, it contributes ~2.2V of resistive drop, enabling tighter overall clamping (7.5V total). This reduces stress on downstream 3.3V I/O cells and improves pass rate in IEC 61000-4-2 Level 4 testing without requiring additional series impedance.
DT1240A-04LP20-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 8-XFDFN Exposed Pad
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 5V
- Voltage - Clamping (Max) @ Ipp:
- 8.5V
- Current - Peak Pulse (10/1000µs):
- 5.5A
- Power - Peak Pulse:
- 38W
- Power Line Protection:
- Yes
- Applications:
- DVI, HDMI, VGA, USB
- Capacitance @ Frequency:
- 0.55pF @ 1MHz
- Operating Temperature:
- -55°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-DFN2010-8 Type B
DT1240A-04LP20-7 FAQ
1.How can I place an order for DT1240A-04LP20-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for DT1240A-04LP20-7 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 DT1240A-04LP20-7 reliable?
The price and inventory of DT1240A-04LP20-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DT1240A-04LP20-7 is usually 5 days.
3.What payment methods are accepted for DT1240A-04LP20-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DT1240A-04LP20-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DT1240A-04LP20-7?
DT1240A-04LP20-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DT1240A-04LP20-7 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 DT1240A-04LP20-7?
For technical support, including DT1240A-04LP20-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DT1240A-04LP20-7 requirements.
6.How does Aetrix verify that DT1240A-04LP20-7 is sourced from the original manufacturer or authorized distributors?
All DT1240A-04LP20-7 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 DT1240A-04LP20-7 meets industry standards.
7.What is the process for return or replacement of DT1240A-04LP20-7?
All DT1240A-04LP20-7 units undergo pre-shipment inspection (PSI). If there is an issue with DT1240A-04LP20-7, 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 DT1240A-04LP20-7 part is unused and in its original packaging.
Return procedure for DT1240A-04LP20-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DT1240A-04LP20-7 Tags
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ESD9B5.0ST5G
onsemi
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DESD3V3E1BL-7B
Diodes Incorporated
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D5V0H1B2LP-7B
Diodes Incorporated
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Diodes Incorporated
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DESD5V0U1BA-7
Diodes Incorporated
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ESD5Z5.0T1G
onsemi
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DESD5V0U1BB-7
Diodes Incorporated
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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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