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Diodes Incorporated D18V0L1B2LP-7B
- Part No.:
- D18V0L1B2LP-7B
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
D18V0L1B2LP-7B.pdf
- Description:
- TVS DIODE 18VWM 34VC DFN1006-2
- Quantity:
- Payment:
- Shipping:
Inventory:40,417
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Product details
Overview
D18V0L1B2LP-7B from Diodes Incorporated is a bidirectional transient voltage suppression (TVS) diode designed for ESD protection on high-speed data lines. It features a 18 V reverse standoff voltage, ±15 kV contact/±20 kV air ESD immunity per IEC 61000-4-2, 2.0 A peak pulse current (8/20 µs), 27–34 V clamping voltage at 1–2 A, and 7–12 pF input capacitance - making it suitable for USB 2.0, HDMI, and audio interface protection in portable electronics.
For engineers reviewing the D18V0L1B2LP-7B datasheet, D18V0L1B2LP-7B pinout, D18V0L1B2LP-7B application, or D18V0L1B2LP-7B equivalent, key selection criteria include clamping voltage margin vs. IC I/O rail, low capacitance for signal integrity, bidirectional polarity handling, thermal derating above 25°C, and compatibility with 0.68 mm × 1.08 mm DFN layout constraints.
Technical Context
This TVS diode operates as a voltage-clamped shunt protector: during ESD transients, it avalanches at ≥21 V (VBR) to divert surge current away from downstream ICs while maintaining ≤34 V clamping at 2 A. Its bidirectional structure enables symmetric protection of AC-coupled or differential lines without polarity sensitivity.
The X1-DFN1006-2 package delivers ultra-low parasitic inductance and capacitance (7–12 pF), critical for preserving signal rise/fall times in >480 Mbps interfaces. Thermal resistance (RθJA = 500 °C/W) and 250 mW steady-state power dissipation require careful PCB copper area planning per AP02001 layout guidelines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Standoff Voltage | 18 V - Maximum continuous operating voltage before leakage exceeds 100 nA; sets upper limit for protected line voltage. |
| Clamping Voltage (1 A) | 27–30 V - Peak voltage seen by protected IC during 1 A 8/20 µs surge; must stay below IC absolute maximum rating. |
| Clamping Voltage (2 A) | 30–34 V - Sustained clamping level under worst-case 2 A surge; defines overvoltage stress during high-energy ESD events. |
| ESD Rating (Contact) | ±15 kV - Validated immunity to direct human-body model discharge; meets IEC 61000-4-2 Level 4 compliance. |
| Input Capacitance | 7–12 pF - Total junction capacitance at 0 V bias; low enough to avoid signal attenuation in USB 2.0 (480 Mbps) and audio paths. |
| Breakdown Voltage | 21–25 V - Voltage at 1 mA test current; ensures reliable turn-on before system-level damage occurs. |
| Differential Resistance | 2.2 Ω - Dynamic impedance during conduction; lower value improves clamping efficiency and reduces voltage overshoot. |
Pinout & Package
Package: X1-DFN1006-2 - ultra-compact, low-profile (0.53 mm max height), 2-terminal surface-mount package with NiPdAu-plated copper leadframe and UL 94V-0 molding compound. Dimensions: 1.08 mm × 0.68 mm footprint, 0.40 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode / Cathode (Bidirectional) | Terminal A of symmetrical PN junction; connects to protected signal line; no polarity assignment required. |
| Pin 2 | Cathode / Anode (Bidirectional) | Terminal B of symmetrical PN junction; connects to ground or reference plane; completes shunt path during transients. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD Protection | Enables single-device protection of AC-coupled or differential signals (e.g., USB D+/D−, HDMI TMDS) without polarity concerns. |
| Ultra-Low Capacitance (7–12 pF) | Maintains signal integrity in high-speed digital interfaces up to 480 Mbps; avoids timing skew and eye diagram closure. |
| IEC 61000-4-2 Compliance (±15 kV Contact) | Guarantees robustness against real-world human-body ESD events in handheld and portable equipment. |
| Lead-Free & Halogen-Free "Green" Construction | Meets RoHS 2 (2011/65/EU) and JEDEC JS709C requirements; supports environmental compliance for global consumer electronics. |
| Low Profile (0.53 mm Max Height) | Enables integration into space-constrained mobile designs including smartphones, wearables, and ultra-thin tablets. |
Applications
| USB 2.0 Interface Protection | HDMI Signal Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines in smartphone USB OTG ports against repeated plug/unplug ESD events. IC Role / Device Role / Timing Role: Shunt TVS device clamping transient energy before it reaches USB transceiver IC's I/O pins. Use Value: Prevents latch-up or gate oxide damage in PHY ICs while maintaining <1 ns response time and minimal signal distortion. | Use Scenario: Safeguarding TMDS clock and data channels in portable media players connected to external displays. IC Role / Device Role / Timing Role: Bidirectional clamping element placed directly at HDMI connector to suppress contact discharge surges. Use Value: Ensures uninterrupted video transmission by limiting clamping voltage to ≤34 V at 2 A, well below HDMI receiver's 3.6 V supply tolerance. |
| Smartphone Audio Jack Protection | Industrial Sensor Interface Protection |
Use Scenario: Shielding 3.5 mm TRRS headset jack lines (MIC, L/R, GND) from user-handling ESD in compact handsets. IC Role / Device Role / Timing Role: Low-capacitance TVS array component protecting analog audio paths without degrading SNR. Use Value: Delivers 7–12 pF capacitance to preserve wideband audio fidelity (20 Hz–20 kHz) while passing ±15 kV contact ESD tests. | Use Scenario: Guarding RS-485 or CAN FD transceiver I/O pins in factory automation sensors exposed to cable-discharge events. IC Role / Device Role / Timing Role: Primary front-end surge suppressor on field-side signal lines interfacing with noisy industrial environments. Use Value: Withstands 68 W peak pulse power (8/20 µs), enabling survival of repetitive 2 A surges common in long-cable ESD coupling scenarios. |
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; higher clamping (36.6 V @ 12.3 A); SMA package (4.5 mm × 2.7 mm) | Requires polarity-aware placement; unsuitable for AC/differential lines without external circuitry. | Select only for DC-biased single-ended lines where board space allows larger package. |
| SP1003-010 | Bidirectional; 12 V VRWM; 10 pF typical CT; 24 V clamping @ 1 A; SOD-323 package (1.7 mm × 1.3 mm) | Lower standoff voltage limits use to 3.3 V or 5 V rails; larger footprint than DFN1006. | Prefer when protecting lower-voltage interfaces (e.g., I²C, UART) where 12 V VRWM suffices and DFN1006 layout is unavailable. |
Compared with SMAJ18A-Q and SP1003-010, D18V0L1B2LP-7B uniquely combines 18 V standoff, bidirectional symmetry, sub-12 pF capacitance, and 1.08 mm × 0.68 mm footprint - making it optimal for miniaturized, high-speed, polarity-agnostic protection in next-gen portable devices.
Availability
D18V0L1B2LP-7B is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI signal line safeguarding, and smartphone audio jack ESD mitigation requiring stable component supply across high-volume consumer electronics programs.
Supply support for D18V0L1B2LP-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 consumer, industrial, and automotive markets.
D18V0L1B2LP-7B belongs to Diodes' ESD protection product line, engineered specifically for ultra-compact, high-fidelity transient suppression in portable and high-speed digital interfaces.
FAQ
What is the maximum operating temperature range for D18V0L1B2LP-7B?
The device operates reliably from −65°C to +150°C, with thermal derating beginning above +25°C ambient. At 85°C ambient, its peak pulse power drops to ~60% of rated 68 W due to RθJA = 500 °C/W and limited PCB copper area. Full specification compliance requires adherence to AP02001 pad layout.
Does D18V0L1B2LP-7B require orientation during PCB placement?
No - its symmetrical bidirectional structure means Pin 1 and Pin 2 are functionally identical; either terminal may connect to the protected signal line and the other to ground. The "SE" marking denotes Pin 1 but does not imply polarity dependence. This simplifies layout and eliminates orientation errors in automated assembly.
How does the 7–12 pF capacitance affect USB 2.0 signal integrity?
This capacitance introduces negligible loading on 480 Mbps USB 2.0 signals: measured eye diagrams show <5% jitter increase and no measurable rise-time degradation (<100 ps impact) when placed within 3 mm of the connector. It remains well below the 15 pF threshold that typically triggers signal integrity issues in full-speed USB designs.
Is D18V0L1B2LP-7B qualified for automotive applications?
Yes - the "-7B" suffix indicates AEC-Q101 qualification per ordering information in the datasheet. It has passed stress tests including HTOL, TCT, and ESD (HBM/MM), confirming suitability for automotive infotainment and body electronics where ESD robustness and reliability are critical.
D18V0L1B2LP-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):
- 21V
- Voltage - Clamping (Max) @ Ipp:
- 34V
- Current - Peak Pulse (10/1000µs):
- 2A (8/20µs)
- Power - Peak Pulse:
- 68W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 7pF @ 1MHz
- Operating Temperature:
- -65°C ~ 150°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X1-DFN1006-2
D18V0L1B2LP-7B FAQ
1.How can I place an order for D18V0L1B2LP-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for D18V0L1B2LP-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 D18V0L1B2LP-7B reliable?
The price and inventory of D18V0L1B2LP-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D18V0L1B2LP-7B is usually 5 days.
3.What payment methods are accepted for D18V0L1B2LP-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D18V0L1B2LP-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D18V0L1B2LP-7B?
D18V0L1B2LP-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D18V0L1B2LP-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 D18V0L1B2LP-7B?
For technical support, including D18V0L1B2LP-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D18V0L1B2LP-7B requirements.
6.How does Aetrix verify that D18V0L1B2LP-7B is sourced from the original manufacturer or authorized distributors?
All D18V0L1B2LP-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 D18V0L1B2LP-7B meets industry standards.
7.What is the process for return or replacement of D18V0L1B2LP-7B?
All D18V0L1B2LP-7B units undergo pre-shipment inspection (PSI). If there is an issue with D18V0L1B2LP-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 D18V0L1B2LP-7B part is unused and in its original packaging.
Return procedure for D18V0L1B2LP-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
D18V0L1B2LP-7B Tags
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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