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Diodes Incorporated D18V0X1B2LP4Q-7B
- Part No.:
- D18V0X1B2LP4Q-7B
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
D18V0X1B2LP4Q-7B.pdf
- Description:
- DATALINE PROTECTION PP X2-DFN100
- Quantity:
- Payment:
- Shipping:
Inventory:6,585
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Product details
Overview
D18V0X1B2LP4Q-7B from Diodes Incorporated is a bidirectional TVS diode designed for ESD protection of high-speed automotive data lines, featuring 18 V reverse standoff voltage, 19.7 V minimum breakdown voltage, 36 V clamping voltage at 3 A peak pulse current, 0.7 pF typical channel capacitance, and AEC-Q101 qualification for under-hood infotainment interfaces.
For engineers reviewing the D18V0X1B2LP4Q-7B datasheet, D18V0X1B2LP4Q-7B pinout, D18V0X1B2LP4Q-7B application, or D18V0X1B2LP4Q-7B equivalent, this part supports high-fidelity signal integrity in USB 2.0, HDMI, and LVDS ports where sub-1pF capacitance and ±20 kV IEC 61000-4-2 ESD immunity are mandatory design requirements.
Technical Context
This TVS diode operates as a low-capacitance, bidirectional transient suppressor optimized for protecting single-channel high-speed differential or single-ended data lines. Its silicon avalanche structure delivers precise clamping at 36 V under 3 A 8/20 μs surge, with leakage <1 μA at 18 V and thermal resistance of 345 °C/W.
The device uses a monolithic dual-diode configuration in anti-series to enable symmetrical clamping for AC-coupled signals. It is rated for continuous operation from –55 °C to +150 °C and meets automotive PPAP requirements with manufacturing traceability in IATF 16949-certified facilities.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage (VRWM) | 18 V - Maximum continuous operating voltage before conduction begins; sets upper limit for signal swing in protected line. |
| Breakdown Voltage (VBR min) | 19.7 V - Confirmed avalanche onset at 1 mA test current; ensures reliable triggering above normal signal peaks. |
| Clamping Voltage (VC @ IPP) | 36 V @ 3 A - Measured peak voltage during 8/20 μs surge; defines worst-case overvoltage seen by downstream IC. |
| Channel Capacitance (CT) | 0.7 pF - Measured at 1 MHz; enables >500 Mbps data rates without signal distortion on USB/LVDS lines. |
| ESD Rating | ±20 kV contact / ±20 kV air per IEC 61000-4-2 - Full compliance with automotive ESD immunity standards. |
| Package | X2-DFN1006-2 - 1.08 mm × 0.68 mm footprint with 0.53 mm max height; compatible with automated SMT placement and reflow. |
| AEC-Q101 Qualified | Yes - Validated for automotive temperature cycling, humidity, and mechanical stress per AEC-Q101 Rev G. |
Pinout & Package
Package: X2-DFN1006-2 - ultra-compact, leadless, two-terminal surface-mount package with NiPdAu-plated copper leadframe and UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode of first diode / Cathode of second diode | Common node for bidirectional clamping path; connects to protected signal line. |
| Pin 2 | Cathode of first diode / Anode of second diode | Ground reference terminal; must be connected to low-inductance chassis or signal ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low junction capacitance | 0.7 pF - preserves signal edge rate and eye diagram integrity on 480 Mbps USB 2.0 and 1.65 Gbps LVDS links. |
| Automotive-grade reliability | AEC-Q101 qualified, PPAP capable, manufactured in IATF 16949 facility - supports Tier-1 BOM inclusion without additional qualification. |
| Low-profile packaging | 0.53 mm max height - enables routing beneath connectors and stacking in space-constrained ADAS camera modules. |
| Green material compliance | Halogen-free, antimony-free, RoHS 3 compliant - satisfies EU ELV and OEM sustainability mandates. |
Applications
| USB 2.0 Interface Protection | HDMI Data Lane Protection |
|---|---|
Use Scenario: Protecting D+ and D– lines of automotive infotainment head units against ESD events during hot-plug insertion. IC Role / Device Role / Timing Role: Bidirectional transient voltage suppressor placed directly at connector entry point. Use Value: 0.7 pF capacitance avoids signal rise-time degradation while clamping transients to ≤36 V, preserving USB 2.0 eye margin. |
Use Scenario: Shielding TMDS clock and data channels in rear-seat entertainment systems from handling ESD. IC Role / Device Role / Timing Role: Single-channel TVS on each differential pair, mounted adjacent to HDMI receptacle. Use Value: ±20 kV contact discharge rating prevents latch-up in HDMI receiver ICs without adding jitter or skew. |
| LVDS Camera Link Protection | Automotive CAN FD Transceiver Interface |
Use Scenario: Guarding high-speed serial links from surround-view cameras exposed to ESD during service access. IC Role / Device Role / Timing Role: One D18V0X1B2LP4Q-7B per LVDS pair, placed within 3 mm of connector. Use Value: 36 V clamping voltage stays below LVDS receiver absolute maximum rating (typically 40 V), preventing damage. |
Use Scenario: Supplementing primary CAN FD transceiver ESD protection on diagnostic port lines in telematics control units. IC Role / Device Role / Timing Role: Secondary clamping device on CANH/CANL lines where layout constraints prevent optimal primary TVS placement. Use Value: Sub-1pF capacitance avoids CAN FD bit timing errors while extending system-level ESD robustness beyond ISO 10605. |
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 | DO-214AC package (4.5 mm × 3.9 mm), 1.5 pF capacitance, 400 W PPP, unidirectional | Larger footprint, higher capacitance, unsuitable for >100 Mbps data lines; requires external bias for bidirectional use | Select only when board space allows larger package and signal bandwidth <100 Mbps. |
| TPD2E001DRYR | 2-channel, 0.9 pF per channel, 5 V VRWM, ±8 kV IEC 61000-4-2, DFN1210-6 | Lower voltage rating, lower ESD level, multi-channel - not drop-in for 18 V automotive data lines | Use only for non-automotive, low-voltage USB/UART protection where 18 V standoff is unnecessary. |
Compared with SMAJ18A-Q and TPD2E001DRYR, D18V0X1B2LP4Q-7B uniquely combines AEC-Q101 qualification, 0.7 pF capacitance, ±20 kV ESD rating, and 18 V standoff in a 1.08 mm × 0.68 mm footprint-enabling direct integration into next-gen automotive high-speed serial interfaces without signal integrity compromise.
Availability
D18V0X1B2LP4Q-7B is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics control units requiring stable component supply across extended product lifecycles.
Supply support for D18V0X1B2LP4Q-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 components for automotive, industrial, and computing markets with over 50 years of power and signal integrity expertise.
This part belongs to the DxV0X1Bx2LP4Q series of ultra-low-capacitance TVS diodes engineered specifically for ESD protection of high-speed automotive data interfaces-including USB, HDMI, and LVDS-where minimal parasitic capacitance and AEC-Q101 compliance are non-negotiable.
FAQ
What is the maximum operating temperature for D18V0X1B2LP4Q-7B?
The device is rated for continuous operation from –55 °C to +150 °C ambient temperature, validated per AEC-Q101 thermal cycling and high-temperature operating life tests. Its 345 °C/W junction-to-ambient thermal resistance assumes standard FR-4 PCB layout with 2 oz copper pads as specified in Diodes' package outline DS43178.
Can D18V0X1B2LP4Q-7B protect both USB 2.0 D+ and D– lines simultaneously?
No - it is a single-channel device. Each D18V0X1B2LP4Q-7B protects one signal line (e.g., D+ or D–). For full USB 2.0 differential pair protection, two devices are required-one per line-with independent ground connections to minimize shared impedance coupling.
Is the marking code "NF" visible on the top surface of D18V0X1B2LP4Q-7B?
Yes - the top-side marking consists of "NF" followed by a bar indicating Pin 1 location, consistent with Diodes' X2-DFN1006-2 package marking convention. The marking is laser-etched and legible under 20× magnification per J-STD-020 moisture sensitivity Level 1 handling requirements.
Does D18V0X1B2LP4Q-7B require a heatsink for 3 A surge events?
No - its 60 W peak pulse power rating (8/20 μs) and low thermal mass allow safe dissipation of single-event surges without external heatsinking. However, repeated surges above 1 Hz require derating per Figure 2 in DS43178, and PCB copper area must follow Diodes' recommended pad layout (1.10 mm × 0.70 mm) for thermal performance.
D18V0X1B2LP4Q-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
- Voltage - Breakdown (Min):
- 19.7V
- Voltage - Clamping (Max) @ Ipp:
- 36V
- Current - Peak Pulse (10/1000µs):
- 3A
- Power - Peak Pulse:
- 120W
- Power Line Protection:
- No
- Applications:
- HDMI, USB
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-DFN1006-2
D18V0X1B2LP4Q-7B FAQ
1.How can I place an order for D18V0X1B2LP4Q-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for D18V0X1B2LP4Q-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 D18V0X1B2LP4Q-7B reliable?
The price and inventory of D18V0X1B2LP4Q-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D18V0X1B2LP4Q-7B is usually 5 days.
3.What payment methods are accepted for D18V0X1B2LP4Q-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D18V0X1B2LP4Q-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D18V0X1B2LP4Q-7B?
D18V0X1B2LP4Q-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D18V0X1B2LP4Q-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 D18V0X1B2LP4Q-7B?
For technical support, including D18V0X1B2LP4Q-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D18V0X1B2LP4Q-7B requirements.
6.How does Aetrix verify that D18V0X1B2LP4Q-7B is sourced from the original manufacturer or authorized distributors?
All D18V0X1B2LP4Q-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 D18V0X1B2LP4Q-7B meets industry standards.
7.What is the process for return or replacement of D18V0X1B2LP4Q-7B?
All D18V0X1B2LP4Q-7B units undergo pre-shipment inspection (PSI). If there is an issue with D18V0X1B2LP4Q-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 D18V0X1B2LP4Q-7B part is unused and in its original packaging.
Return procedure for D18V0X1B2LP4Q-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
D18V0X1B2LP4Q-7B Tags
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Diodes Incorporated
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Diodes Incorporated
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