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Diodes Incorporated D18V0X1B2LPQ-7B
- Part No.:
- D18V0X1B2LPQ-7B
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
D18V0X1B2LPQ-7B.pdf
- Description:
- Dataline Protection PP X1-DFN100
- Quantity:
- Payment:
- Shipping:
Inventory:8,990
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Product details
Overview
D18V0X1B2LPQ-7B from Diodes Incorporated is a bidirectional TVS diode designed for ESD protection of high-speed data lines in automotive interfaces. It features a 18 V reverse working voltage, 19.7 V minimum breakdown voltage, 0.5 pF typical capacitance, ±20 kV IEC 61000-4-2 contact/air ESD rating, and 3 A peak pulse current - enabling robust transient suppression on USB, HDMI, and LVDS ports without signal integrity degradation.
For engineers reviewing the D18V0X1B2LPQ-7B datasheet, D18V0X1B2LPQ-7B pinout, D18V0X1B2LPQ-7B application, or D18V0X1B2LPQ-7B equivalent, this device delivers ultra-low capacitance ESD clamping for high-frequency automotive serial interfaces where signal fidelity, board space, and AEC-Q101 compliance are critical selection criteria.
Technical Context
This TVS operates as a bidirectional clamping device between two terminals, triggering when transient voltage exceeds its 19.7 V (min) breakdown threshold to divert surge current away from protected ICs. Its low dynamic resistance (1.15 Ω TLP @ 30 A) ensures rapid voltage clamping to ≤36 V at 3 A (8/20 µs), limiting stress on downstream transceivers.
Designed specifically for high-speed digital interfaces, it maintains signal integrity via sub-0.7 pF capacitance (typ. 0.5 pF @ 1 MHz, 0 V), and supports operation across –55 °C to +150 °C - meeting automotive under-hood and infotainment environmental requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 18 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA; sets upper limit for safe interface biasing. |
| VBR (min) | 19.7 V - Minimum voltage at which device enters avalanche conduction; defines earliest clamping onset for transients. |
| VCL @ 3A | 36 V - Clamped voltage during 3 A 8/20 µs surge; determines maximum stress imposed on protected IC's I/O pins. |
| CT (typ) | 0.5 pF - Junction capacitance at 0 V, 1 MHz; enables use on >1 Gbps differential links (e.g., HDMI 2.0, USB 3.2 Gen 1) without measurable insertion loss. |
| IPP (max) | 3 A - Peak pulse current handling per IEC 61000-4-5 8/20 µs waveform; validates survivability against lightning-induced surges in vehicle harnesses. |
| ESD Rating | ±20 kV (contact/air) - Complies with IEC 61000-4-2 Level 4; eliminates need for secondary ESD protection stages in module-level designs. |
| PD | 360 mW - Steady-state power dissipation on FR-4; sufficient for intermittent ESD events without thermal runaway in compact layouts. |
Pinout & Package
Package: X1-DFN1006-2 - ultra-compact 1.08 mm × 0.68 mm footprint, 0.53 mm max height, 2-terminal monolithic structure with NiPdAu-plated copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode (bidirectional) | Common terminal for both polarities; connects to protected signal line (e.g., USB D+, HDMI TMDS+). |
| Pin 2 | Cathode (bidirectional) | Common terminal for both polarities; connects to system ground or reference plane - forms symmetrical clamping path. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD stress - required for Tier-1 module qualification. |
| Ultra-low 0.5 pF capacitance | Minimizes signal distortion and timing skew on high-speed differential pairs, preserving eye diagram integrity up to 3 Gbps. |
| ±20 kV ESD protection | Meets highest IEC 61000-4-2 immunity level without external RC filters or layout compromises. |
| Lead-free & halogen-free | Complies with RoHS 3 (2015/863/EU) and automotive "Green" standards (<900 ppm Br/Cl, <1000 ppm Sb) - supports global vehicle recycling mandates. |
Applications
| USB 3.2 Gen 1 Interface Protection | HDMI 2.0 Port ESD Suppression |
|---|---|
Use Scenario: Protecting SuperSpeed USB data lanes (D+/D−) in automotive infotainment head units against hot-plug ESD and cable discharge events. IC Role / Device Role: Bidirectional clamping TVS placed directly at connector, shunting transients before they reach USB controller PHY. Use Value: 0.5 pF capacitance avoids degrading 5 Gbps eye margin; ±20 kV rating eliminates need for series resistors or ferrites that impair signal rise time. | Use Scenario: Safeguarding HDMI TMDS channels in rear-seat entertainment systems exposed to repeated human-body ESD during passenger interaction. IC Role / Device Role: Low-capacitance TVS mounted at HDMI receptacle, clamping fast-rising ESD pulses before reaching display processor or serializer. Use Value: 36 V clamping at 3 A limits voltage overshoot below HDMI receiver absolute maximum ratings (typically 40 V), preventing latch-up or permanent damage. |
| LVDS Camera Link Protection | Automotive Ethernet (100BASE-T1) Surge Guard |
Use Scenario: Shielding 1.2 Gbps LVDS video streams from ADAS cameras against ESD induced by chassis grounding differences or connector mating. IC Role / Device Role: Differential pair TVS applied across each LVDS lane (positive/negative) referenced to common ground plane. Use Value: Symmetrical 19.7–26.2 V breakdown ensures matched clamping thresholds on both polarities, preserving common-mode rejection and minimizing skew. | Use Scenario: Providing first-line ESD defense on 100BASE-T1 PHY inputs in vehicle domain controllers subjected to ISO 10605 and IEC 61000-4-2 stress. IC Role / Device Role: Bidirectional TVS installed at RJ45 connector entry point, absorbing transients before signal conditioning circuitry. Use Value: 400 °C/W junction-to-ambient thermal resistance allows sustained operation at 125 °C ambient - validated for under-dash deployment per AEC-Q101. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A-Q | Unidirectional; 18 V VRWM; 200 pF CT; DO-214AC package (4.5 × 2.7 mm) | Higher capacitance limits use to DC/low-speed signals only; larger footprint incompatible with fine-pitch connectors. | Select only if board space permits and signal bandwidth <100 MHz. |
| SP1003-010 | Bidirectional; 12 V VRWM; 0.3 pF CT; SOD-323 package (2.7 × 1.7 mm) | Lower clamping voltage (24 V @ 1 A) but reduced surge rating (1.5 A IPP); not AEC-Q101 qualified. | Use for non-automotive consumer electronics where cost and capacitance dominate over surge robustness. |
Compared with SMAJ18A-Q and SP1003-010, D18V0X1B2LPQ-7B uniquely balances ultra-low capacitance, automotive qualification, and compact DFN packaging - making it the only option suitable for AEC-Q101-compliant, high-speed serial interface protection in space-constrained modules.
Availability
D18V0X1B2LPQ-7B is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and vehicle Ethernet gateways requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant ESD protection.
Supply support for D18V0X1B2LPQ-7B 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 automotive, industrial, and computing markets.
D18V0X1B2LPQ-7B belongs to Diodes' X1-series ultra-low-capacitance TVS portfolio, engineered specifically for ESD hardening of gigabit-speed automotive serial interfaces while maintaining AEC-Q101 qualification and green manufacturing compliance.
FAQ
What is the maximum operating temperature range for D18V0X1B2LPQ-7B?
The D18V0X1B2LPQ-7B is rated for operation from –55 °C to +150 °C, fully compliant with AEC-Q101 temperature cycling and storage requirements. This range supports placement in engine compartments, under-dash ECUs, and other thermally demanding automotive locations without derating.
Does D18V0X1B2LPQ-7B require external biasing or control signals?
No. D18V0X1B2LPQ-7B is a passive, bidirectional TVS diode with no control pins or bias requirements. It operates solely based on voltage threshold - conducting only during transient overvoltage events above its 19.7 V breakdown, remaining high-impedance during normal signal operation.
Can D18V0X1B2LPQ-7B be used on differential pairs without skew impact?
Yes. Its symmetrical bidirectional structure and matched 19.7–26.2 V breakdown tolerance ensure identical clamping behavior on both signal polarities. Measured 0.5 pF capacitance introduces negligible skew (<0.1 ps) on 100 Ω differential traces, preserving LVDS and HDMI signal integrity.
Is D18V0X1B2LPQ-7B compatible with lead-free reflow soldering processes?
Yes. The device uses NiPdAu-plated copper leadframe and is qualified for standard lead-free reflow profiles (JEDEC J-STD-020, peak 260 °C). Moisture sensitivity level is MSL 1 - no baking required prior to assembly.
D18V0X1B2LPQ-7B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Package/Case:
- 0402 (1006 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 18V (Max)
- Voltage - Breakdown (Min):
- 19.7V
- Voltage - Clamping (Max) @ Ipp:
- 36V
- Current - Peak Pulse (10/1000µs):
- 3A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- HDMI, USB
- Capacitance @ Frequency:
- 0.5pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X1-DFN1006-2
D18V0X1B2LPQ-7B FAQ
1.How can I place an order for D18V0X1B2LPQ-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for D18V0X1B2LPQ-7B 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 D18V0X1B2LPQ-7B reliable?
The price and inventory of D18V0X1B2LPQ-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D18V0X1B2LPQ-7B is usually 5 days.
3.What payment methods are accepted for D18V0X1B2LPQ-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D18V0X1B2LPQ-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D18V0X1B2LPQ-7B?
D18V0X1B2LPQ-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D18V0X1B2LPQ-7B 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 D18V0X1B2LPQ-7B?
For technical support, including D18V0X1B2LPQ-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D18V0X1B2LPQ-7B requirements.
6.How does Aetrix verify that D18V0X1B2LPQ-7B is sourced from the original manufacturer or authorized distributors?
All D18V0X1B2LPQ-7B 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 D18V0X1B2LPQ-7B meets industry standards.
7.What is the process for return or replacement of D18V0X1B2LPQ-7B?
All D18V0X1B2LPQ-7B units undergo pre-shipment inspection (PSI). If there is an issue with D18V0X1B2LPQ-7B, 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 D18V0X1B2LPQ-7B part is unused and in its original packaging.
Return procedure for D18V0X1B2LPQ-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
D18V0X1B2LPQ-7B Tags
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