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Diodes Incorporated D18V0H1U2LP-7B
- Part No.:
- D18V0H1U2LP-7B
- Manufacturer:
- Diodes Incorporated
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
D18V0H1U2LP-7B.pdf
- Description:
- GENERAL PROTECTION PP X1-DFN1006
- Quantity:
- Payment:
- Shipping:
Inventory:6,398
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Product details
Overview
D18V0H1U2LP-7B from Diodes Incorporated is a unidirectional transient voltage suppression (TVS) diode designed for ESD protection of high-speed data lines in portable electronics. It features a 18 V reverse working voltage, 20 V minimum breakdown voltage, 11 A peak pulse current (8/20 µs), 58 pF typical junction capacitance at 0 V, and ±30 kV IEC 61000-4-2 contact/air ESD rating - deployed in cellular handsets and USB interfaces.
For engineers reviewing the D18V0H1U2LP-7B datasheet, D18V0H1U2LP-7B pinout, D18V0H1U2LP-7B application, or D18V0H1U2LP-7B equivalent, key selection criteria include clamping voltage under 11 A surge (32 V), ultra-low profile (0.53 mm max height), DFN1006-2 footprint compatibility, and RoHS-compliant lead-free construction with NiPdAu terminations.
Technical Context
This TVS diode operates in unidirectional configuration, with cathode-anode conduction during positive transients and blocking up to 18 V in reverse bias. Its low 58 pF capacitance minimizes signal distortion on high-speed lines such as USB 2.0 and HDMI, while maintaining robust ±30 kV ESD immunity per IEC 61000-4-2.
The device uses silicon avalanche technology with precise 20–24 V breakdown tolerance (at 1 mA), delivering a clamping voltage of 24 V at 1 A and 32 V at 11 A (8/20 µs waveform). Thermal resistance is 500 °C/W (junction-to-ambient), requiring careful PCB copper area design per Diodes' recommended X1-DFN1006-2 pad layout.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRWM | 18.0 V - Maximum continuous reverse operating voltage before leakage exceeds 1 µA |
| VBR (min) | 20 V - Breakdown initiates at ≥20 V (1 mA test), ensuring reliable turn-on above normal signal swing |
| VCL @ 11 A | 32 V - Clamped voltage during worst-case 8/20 µs surge, limiting downstream IC stress |
| CT | 58 pF - Low junction capacitance preserves signal integrity on 480 Mbps USB 2.0 lines |
| IPP | 11 A - Peak pulse current handling per IEC 61000-4-5 (lightning), validated with 8/20 µs waveform |
| ESD Rating | ±30 kV - Full compliance with IEC 61000-4-2 contact and air discharge, no external shielding needed |
| Package | X1-DFN1006-2 - 1.08 × 0.68 mm footprint, 0.53 mm max height, optimized for space-constrained PCBs |
Pinout & Package
Package: X1-DFN1006-2 - ultra-compact, two-terminal surface-mount package with exposed thermal pad not present; molded green compound, UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode | Connected to protected line (e.g., USB D+); conducts during positive overvoltage events |
| Pin 2 | Anode | Connected to ground reference; completes current path during ESD clamp operation |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low profile | 0.53 mm max height enables use in slim smartphones and wearables without mechanical interference |
| Low input capacitance | 58 pF at 0 V ensures <0.5 dB insertion loss at 240 MHz, preserving USB 2.0 eye diagram integrity |
| IEC 61000-4-2 certified ESD protection | ±30 kV contact/air rating eliminates need for secondary ESD stages in front-end interface design |
| Lead-free & halogen-free construction | Meets RoHS 3 (2015/863/EU) and "Green" definition (<900 ppm Br/Cl, <1000 ppm Sb), supporting eco-compliance programs |
Applications
| USB 2.0 Data Lines | HDMI Interface Protection |
|---|---|
Use Scenario: ESD protection on D+ and D− lines of smartphone USB ports exposed to frequent plug/unplug cycles. IC Role / Device Role / Timing Role: Unidirectional TVS clamping element placed directly at connector, shunting surges to ground before reaching PHY IC. Use Value: 58 pF capacitance avoids signal rise-time degradation; 32 V clamping prevents damage to 3.3 V tolerant USB transceivers. | Use Scenario: Protecting TMDS clock and data channels in portable media players connected to HDMI displays. IC Role / Device Role / Timing Role: Line-side transient suppressor mounted adjacent to HDMI receptacle, referenced to chassis ground. Use Value: Sub-1 ns response time and 32 V clamping safeguard 3.3 V HDMI sink ICs against ±30 kV ESD events without degrading 165 MHz pixel clock integrity. |
| Cellular Antenna Feedlines | Audio Jack ESD Guard |
Use Scenario: Shielding RF front-end components (e.g., LNA, switch) from ESD entering via external antenna connectors. IC Role / Device Role / Timing Role: DC-blocking TVS placed in series with antenna feedline, leveraging unidirectional behavior to avoid RF path disruption. Use Value: 18 V VRWM allows safe operation across DC bias ranges used in LTE band-switching circuits; low capacitance avoids detuning. | Use Scenario: Preventing user-induced ESD damage on 3.5 mm audio jack contacts in MP3 players and tablets. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (anode grounded) guarding left/right channel and ground pins. Use Value: 0.001 g weight and 1.08 × 0.68 mm footprint enable placement within tight jack mounting zones; ±30 kV rating covers real-world pocket discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ18A-Q | DO-214AC package (4.5 × 2.7 mm), 3.5 W PPP, 500 pF CT, 38.9 V VCL @ 11 A | Not suitable for high-speed data lines due to high capacitance and large footprint | Select only for board-level power rail or low-frequency I/O where size and speed are non-critical |
| SP1003-01UTG | SOD-323 package (1.7 × 1.25 mm), 12 V VRWM, 30 pF CT, 20 V VCL @ 1 A | Limited to ≤12 V systems; lower clamping but insufficient for 18 V-rated interfaces | Prefer for 3.3 V/5 V logic lines; avoid when protecting 18 V tolerant circuits like certain USB-C CC lines |
Compared with SMAJ18A-Q and SP1003-01UTG, D18V0H1U2LP-7B uniquely balances 18 V operating margin, 58 pF signal loading, and 0.53 mm profile - making it the only viable choice for space-constrained, high-speed 18 V interface protection.
Availability
D18V0H1U2LP-7B is available at Aetrix Electronics and suitable for cellular handset design, portable media player development, and USB 2.0 peripheral manufacturing requiring stable component supply and full RoHS 3 compliance.
Supply support for D18V0H1U2LP-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, headquartered in Plano, Texas, serving automotive, industrial, computing, and consumer markets with high-reliability components.
This device belongs to Diodes' X1-series ultra-compact TVS portfolio, engineered specifically for ESD-hardened portable electronics interfaces where board space, signal fidelity, and regulatory compliance are co-constrained.
FAQ
What is the maximum allowable PCB temperature rise during 11 A transient events?
Under an 8/20 µs pulse, the device's thermal mass limits junction temperature rise to <15 °C above ambient for single-event conditions. Continuous operation requires adherence to the derating curve in Figure 1: at 70 °C ambient, maximum PD drops to 125 mW. PCB copper area must match Diodes' X1-DFN1006-2 recommended pad layout to sustain this performance.
Can D18V0H1U2LP-7B be used in bidirectional signal paths like RS-485?
No - it is strictly unidirectional and conducts only from cathode to anode. For bidirectional lines, two devices in series opposition or a dedicated bidirectional TVS (e.g., D12V0U2UP-7B) are required. Using this part on a bidirectional line would block one polarity entirely and fail to protect the reverse direction.
Does the 58 pF capacitance apply across the full 0–18 V reverse bias range?
No - capacitance varies with applied voltage. Per Figure 4, CT drops from ~58 pF at 0 V to ~15 pF at 15 V reverse bias. Designers must reference the CT vs. VR curve for accurate high-frequency modeling; 58 pF is the worst-case value used for signal integrity margining at zero bias.
Is the "18" marking on the top surface the full part number or a code?
It is a product type marking code per Diodes' standard: "18" denotes the 18 V VRWM grade. The full orderable part number (D18V0H1U2LP-7B) is not laser-marked; instead, "18" + bar (cathode indicator) + "e4" (lead-free plating code) appears on the top surface. Reel labeling carries the complete part number.
D18V0H1U2LP-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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 18V (Max)
- Voltage - Breakdown (Min):
- 20V
- Voltage - Clamping (Max) @ Ipp:
- 32V
- Current - Peak Pulse (10/1000µs):
- 11A (8/20µs)
- Power - Peak Pulse:
- 350W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 58pF @ 1MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X1-DFN1006-2
D18V0H1U2LP-7B FAQ
1.How can I place an order for D18V0H1U2LP-7B through Aetrix?
Please submit a Request for Quotation (RFQ) for D18V0H1U2LP-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 D18V0H1U2LP-7B reliable?
The price and inventory of D18V0H1U2LP-7B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for D18V0H1U2LP-7B is usually 5 days.
3.What payment methods are accepted for D18V0H1U2LP-7B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for D18V0H1U2LP-7B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for D18V0H1U2LP-7B?
D18V0H1U2LP-7B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your D18V0H1U2LP-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 D18V0H1U2LP-7B?
For technical support, including D18V0H1U2LP-7B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your D18V0H1U2LP-7B requirements.
6.How does Aetrix verify that D18V0H1U2LP-7B is sourced from the original manufacturer or authorized distributors?
All D18V0H1U2LP-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 D18V0H1U2LP-7B meets industry standards.
7.What is the process for return or replacement of D18V0H1U2LP-7B?
All D18V0H1U2LP-7B units undergo pre-shipment inspection (PSI). If there is an issue with D18V0H1U2LP-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 D18V0H1U2LP-7B part is unused and in its original packaging.
Return procedure for D18V0H1U2LP-7B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
D18V0H1U2LP-7B Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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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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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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